./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/test-easy7.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe243da-d686-4c75-87cb-672a2e8fa152/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe243da-d686-4c75-87cb-672a2e8fa152/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe243da-d686-4c75-87cb-672a2e8fa152/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe243da-d686-4c75-87cb-672a2e8fa152/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/test-easy7.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe243da-d686-4c75-87cb-672a2e8fa152/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe243da-d686-4c75-87cb-672a2e8fa152/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 89875838ba00841ab95f284d6aeb82a1a762d2b06c5f173202307480dc57b4e4 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:03:03,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:03:03,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:03:03,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:03:03,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:03:03,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:03:03,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:03:03,202 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:03:03,204 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:03:03,205 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:03:03,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:03:03,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:03:03,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:03:03,210 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:03:03,211 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:03:03,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:03:03,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:03:03,215 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:03:03,217 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:03:03,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:03:03,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:03:03,222 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:03:03,224 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:03:03,225 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:03:03,228 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:03:03,229 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:03:03,229 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:03:03,230 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:03:03,231 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:03:03,232 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:03:03,232 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:03:03,233 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:03:03,234 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:03:03,235 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:03:03,245 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:03:03,245 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:03:03,246 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:03:03,246 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:03:03,247 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:03:03,248 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:03:03,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:03:03,249 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe243da-d686-4c75-87cb-672a2e8fa152/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:03:03,287 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:03:03,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:03:03,294 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:03:03,295 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:03:03,296 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:03:03,296 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:03:03,297 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:03:03,297 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:03:03,297 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:03:03,297 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:03:03,298 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:03:03,299 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:03:03,299 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:03:03,299 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:03:03,299 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:03:03,299 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:03:03,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:03:03,300 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:03:03,300 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:03:03,300 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:03:03,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:03:03,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:03:03,301 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:03:03,301 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:03:03,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:03:03,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:03:03,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:03:03,303 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:03:03,304 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:03:03,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:03:03,304 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:03:03,304 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:03:03,305 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:03:03,305 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe243da-d686-4c75-87cb-672a2e8fa152/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe243da-d686-4c75-87cb-672a2e8fa152/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89875838ba00841ab95f284d6aeb82a1a762d2b06c5f173202307480dc57b4e4 [2022-11-16 11:03:03,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:03:03,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:03:03,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:03:03,605 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:03:03,606 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:03:03,607 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe243da-d686-4c75-87cb-672a2e8fa152/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/test-easy7.wvr.c [2022-11-16 11:03:03,690 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe243da-d686-4c75-87cb-672a2e8fa152/bin/uautomizer-tPACEb0tL8/data/2780d72b8/792d611a9fb04e2bbdc72e55a7bf4249/FLAG1cc67409e [2022-11-16 11:03:04,196 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:03:04,197 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe243da-d686-4c75-87cb-672a2e8fa152/sv-benchmarks/c/weaver/test-easy7.wvr.c [2022-11-16 11:03:04,207 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe243da-d686-4c75-87cb-672a2e8fa152/bin/uautomizer-tPACEb0tL8/data/2780d72b8/792d611a9fb04e2bbdc72e55a7bf4249/FLAG1cc67409e [2022-11-16 11:03:04,568 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe243da-d686-4c75-87cb-672a2e8fa152/bin/uautomizer-tPACEb0tL8/data/2780d72b8/792d611a9fb04e2bbdc72e55a7bf4249 [2022-11-16 11:03:04,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:03:04,571 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:03:04,572 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:03:04,572 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:03:04,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:03:04,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:03:04" (1/1) ... [2022-11-16 11:03:04,577 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@202d699b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:03:04, skipping insertion in model container [2022-11-16 11:03:04,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:03:04" (1/1) ... [2022-11-16 11:03:04,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:03:04,601 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:03:04,788 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe243da-d686-4c75-87cb-672a2e8fa152/sv-benchmarks/c/weaver/test-easy7.wvr.c[1872,1885] [2022-11-16 11:03:04,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:03:04,799 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:03:04,815 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe243da-d686-4c75-87cb-672a2e8fa152/sv-benchmarks/c/weaver/test-easy7.wvr.c[1872,1885] [2022-11-16 11:03:04,816 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:03:04,829 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:03:04,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:03:04 WrapperNode [2022-11-16 11:03:04,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:03:04,830 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:03:04,831 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:03:04,831 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:03:04,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:03:04" (1/1) ... [2022-11-16 11:03:04,847 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:03:04" (1/1) ... [2022-11-16 11:03:04,866 INFO L138 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2022-11-16 11:03:04,866 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:03:04,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:03:04,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:03:04,867 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:03:04,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:03:04" (1/1) ... [2022-11-16 11:03:04,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:03:04" (1/1) ... [2022-11-16 11:03:04,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:03:04" (1/1) ... [2022-11-16 11:03:04,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:03:04" (1/1) ... [2022-11-16 11:03:04,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:03:04" (1/1) ... [2022-11-16 11:03:04,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:03:04" (1/1) ... [2022-11-16 11:03:04,887 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:03:04" (1/1) ... [2022-11-16 11:03:04,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:03:04" (1/1) ... [2022-11-16 11:03:04,890 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:03:04,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:03:04,891 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:03:04,891 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:03:04,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:03:04" (1/1) ... [2022-11-16 11:03:04,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:03:04,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe243da-d686-4c75-87cb-672a2e8fa152/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:03:04,932 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe243da-d686-4c75-87cb-672a2e8fa152/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:03:04,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe243da-d686-4c75-87cb-672a2e8fa152/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:03:04,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:03:04,982 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:03:04,982 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:03:04,982 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:03:04,982 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:03:04,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:03:04,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:03:04,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:03:04,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:03:04,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:03:04,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:03:04,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:03:04,987 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:03:05,118 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:03:05,121 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:03:05,411 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:03:05,419 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:03:05,419 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 11:03:05,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:03:05 BoogieIcfgContainer [2022-11-16 11:03:05,421 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:03:05,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:03:05,424 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:03:05,427 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:03:05,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:03:04" (1/3) ... [2022-11-16 11:03:05,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49eb0bb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:03:05, skipping insertion in model container [2022-11-16 11:03:05,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:03:04" (2/3) ... [2022-11-16 11:03:05,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49eb0bb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:03:05, skipping insertion in model container [2022-11-16 11:03:05,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:03:05" (3/3) ... [2022-11-16 11:03:05,430 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy7.wvr.c [2022-11-16 11:03:05,438 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:03:05,448 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:03:05,450 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:03:05,451 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:03:05,558 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 11:03:05,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 94 transitions, 204 flow [2022-11-16 11:03:05,712 INFO L130 PetriNetUnfolder]: 2/92 cut-off events. [2022-11-16 11:03:05,716 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 11:03:05,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 92 events. 2/92 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2022-11-16 11:03:05,721 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 94 transitions, 204 flow [2022-11-16 11:03:05,728 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 83 transitions, 178 flow [2022-11-16 11:03:05,751 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:03:05,760 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4319e10, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:03:05,761 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-16 11:03:05,813 INFO L130 PetriNetUnfolder]: 2/82 cut-off events. [2022-11-16 11:03:05,814 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 11:03:05,815 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:05,816 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:05,816 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:03:05,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:05,821 INFO L85 PathProgramCache]: Analyzing trace with hash 126118782, now seen corresponding path program 1 times [2022-11-16 11:03:05,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:05,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772894532] [2022-11-16 11:03:05,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:05,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:06,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:07,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:03:07,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:07,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772894532] [2022-11-16 11:03:07,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772894532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:07,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:07,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:03:07,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008382661] [2022-11-16 11:03:07,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:07,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:03:07,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:08,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:03:08,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:03:08,029 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:03:08,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 83 transitions, 178 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:08,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:08,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:03:08,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:09,802 INFO L130 PetriNetUnfolder]: 179/515 cut-off events. [2022-11-16 11:03:09,803 INFO L131 PetriNetUnfolder]: For 65/65 co-relation queries the response was YES. [2022-11-16 11:03:09,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 984 conditions, 515 events. 179/515 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2118 event pairs, 133 based on Foata normal form. 3/511 useless extension candidates. Maximal degree in co-relation 824. Up to 332 conditions per place. [2022-11-16 11:03:09,810 INFO L137 encePairwiseOnDemand]: 60/94 looper letters, 47 selfloop transitions, 28 changer transitions 34/148 dead transitions. [2022-11-16 11:03:09,810 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 148 transitions, 535 flow [2022-11-16 11:03:09,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 11:03:09,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 11:03:09,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1583 transitions. [2022-11-16 11:03:09,833 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5613475177304964 [2022-11-16 11:03:09,834 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1583 transitions. [2022-11-16 11:03:09,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1583 transitions. [2022-11-16 11:03:09,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:09,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1583 transitions. [2022-11-16 11:03:09,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 52.766666666666666) internal successors, (1583), 30 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:09,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:09,865 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:09,868 INFO L175 Difference]: Start difference. First operand has 88 places, 83 transitions, 178 flow. Second operand 30 states and 1583 transitions. [2022-11-16 11:03:09,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 148 transitions, 535 flow [2022-11-16 11:03:09,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 148 transitions, 521 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:03:09,878 INFO L231 Difference]: Finished difference. Result has 136 places, 103 transitions, 360 flow [2022-11-16 11:03:09,880 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=360, PETRI_PLACES=136, PETRI_TRANSITIONS=103} [2022-11-16 11:03:09,884 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 48 predicate places. [2022-11-16 11:03:09,885 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 103 transitions, 360 flow [2022-11-16 11:03:09,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:09,886 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:09,886 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:09,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:03:09,887 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:03:09,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:09,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1479619674, now seen corresponding path program 2 times [2022-11-16 11:03:09,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:09,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374005728] [2022-11-16 11:03:09,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:09,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:09,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:10,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:03:10,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:10,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374005728] [2022-11-16 11:03:10,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374005728] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:10,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:10,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-16 11:03:10,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726142175] [2022-11-16 11:03:10,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:10,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:03:10,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:10,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:03:10,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:03:10,889 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:03:10,890 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 103 transitions, 360 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:10,890 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:10,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:03:10,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:12,420 INFO L130 PetriNetUnfolder]: 202/559 cut-off events. [2022-11-16 11:03:12,421 INFO L131 PetriNetUnfolder]: For 243/243 co-relation queries the response was YES. [2022-11-16 11:03:12,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1546 conditions, 559 events. 202/559 cut-off events. For 243/243 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2507 event pairs, 22 based on Foata normal form. 1/558 useless extension candidates. Maximal degree in co-relation 1515. Up to 329 conditions per place. [2022-11-16 11:03:12,428 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 82 selfloop transitions, 42 changer transitions 36/199 dead transitions. [2022-11-16 11:03:12,429 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 199 transitions, 1049 flow [2022-11-16 11:03:12,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-16 11:03:12,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-16 11:03:12,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1561 transitions. [2022-11-16 11:03:12,434 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5726338958180485 [2022-11-16 11:03:12,434 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1561 transitions. [2022-11-16 11:03:12,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1561 transitions. [2022-11-16 11:03:12,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:12,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1561 transitions. [2022-11-16 11:03:12,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 53.827586206896555) internal successors, (1561), 29 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:12,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:12,444 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:12,445 INFO L175 Difference]: Start difference. First operand has 136 places, 103 transitions, 360 flow. Second operand 29 states and 1561 transitions. [2022-11-16 11:03:12,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 199 transitions, 1049 flow [2022-11-16 11:03:12,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 199 transitions, 955 flow, removed 38 selfloop flow, removed 13 redundant places. [2022-11-16 11:03:12,454 INFO L231 Difference]: Finished difference. Result has 156 places, 139 transitions, 637 flow [2022-11-16 11:03:12,454 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=637, PETRI_PLACES=156, PETRI_TRANSITIONS=139} [2022-11-16 11:03:12,455 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 68 predicate places. [2022-11-16 11:03:12,455 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 139 transitions, 637 flow [2022-11-16 11:03:12,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:12,456 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:12,456 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:12,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:03:12,457 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:03:12,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:12,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1215992582, now seen corresponding path program 3 times [2022-11-16 11:03:12,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:12,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443483781] [2022-11-16 11:03:12,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:12,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:12,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:13,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:03:13,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:13,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443483781] [2022-11-16 11:03:13,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443483781] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:13,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:13,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-16 11:03:13,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778333669] [2022-11-16 11:03:13,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:13,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:03:13,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:13,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:03:13,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:03:13,469 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:03:13,470 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 139 transitions, 637 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:13,471 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:13,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:03:13,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:15,754 INFO L130 PetriNetUnfolder]: 240/645 cut-off events. [2022-11-16 11:03:15,754 INFO L131 PetriNetUnfolder]: For 820/820 co-relation queries the response was YES. [2022-11-16 11:03:15,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2261 conditions, 645 events. 240/645 cut-off events. For 820/820 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3036 event pairs, 40 based on Foata normal form. 1/643 useless extension candidates. Maximal degree in co-relation 2220. Up to 401 conditions per place. [2022-11-16 11:03:15,762 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 102 selfloop transitions, 56 changer transitions 43/240 dead transitions. [2022-11-16 11:03:15,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 240 transitions, 1595 flow [2022-11-16 11:03:15,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-16 11:03:15,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-16 11:03:15,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2062 transitions. [2022-11-16 11:03:15,769 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5624659028914348 [2022-11-16 11:03:15,769 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2062 transitions. [2022-11-16 11:03:15,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2062 transitions. [2022-11-16 11:03:15,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:15,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2062 transitions. [2022-11-16 11:03:15,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 52.87179487179487) internal successors, (2062), 39 states have internal predecessors, (2062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:15,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:15,783 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:15,783 INFO L175 Difference]: Start difference. First operand has 156 places, 139 transitions, 637 flow. Second operand 39 states and 2062 transitions. [2022-11-16 11:03:15,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 240 transitions, 1595 flow [2022-11-16 11:03:15,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 240 transitions, 1454 flow, removed 66 selfloop flow, removed 11 redundant places. [2022-11-16 11:03:15,798 INFO L231 Difference]: Finished difference. Result has 201 places, 182 transitions, 1065 flow [2022-11-16 11:03:15,799 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=1065, PETRI_PLACES=201, PETRI_TRANSITIONS=182} [2022-11-16 11:03:15,799 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 113 predicate places. [2022-11-16 11:03:15,800 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 182 transitions, 1065 flow [2022-11-16 11:03:15,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:15,800 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:15,801 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:15,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:03:15,801 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:03:15,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:15,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1665333946, now seen corresponding path program 4 times [2022-11-16 11:03:15,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:15,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206661352] [2022-11-16 11:03:15,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:15,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:16,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:03:16,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:16,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206661352] [2022-11-16 11:03:16,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206661352] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:16,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:16,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:03:16,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476406342] [2022-11-16 11:03:16,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:16,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:03:16,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:16,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:03:16,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:03:16,672 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:03:16,673 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 182 transitions, 1065 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:16,673 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:16,673 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:03:16,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:18,257 INFO L130 PetriNetUnfolder]: 238/637 cut-off events. [2022-11-16 11:03:18,258 INFO L131 PetriNetUnfolder]: For 1487/1487 co-relation queries the response was YES. [2022-11-16 11:03:18,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2624 conditions, 637 events. 238/637 cut-off events. For 1487/1487 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2984 event pairs, 3 based on Foata normal form. 1/637 useless extension candidates. Maximal degree in co-relation 2564. Up to 403 conditions per place. [2022-11-16 11:03:18,267 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 111 selfloop transitions, 53 changer transitions 44/247 dead transitions. [2022-11-16 11:03:18,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 247 transitions, 1855 flow [2022-11-16 11:03:18,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-16 11:03:18,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-16 11:03:18,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1502 transitions. [2022-11-16 11:03:18,275 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5706686930091185 [2022-11-16 11:03:18,275 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 1502 transitions. [2022-11-16 11:03:18,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 1502 transitions. [2022-11-16 11:03:18,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:18,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 1502 transitions. [2022-11-16 11:03:18,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 53.642857142857146) internal successors, (1502), 28 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:18,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 94.0) internal successors, (2726), 29 states have internal predecessors, (2726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:18,286 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 94.0) internal successors, (2726), 29 states have internal predecessors, (2726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:18,286 INFO L175 Difference]: Start difference. First operand has 201 places, 182 transitions, 1065 flow. Second operand 28 states and 1502 transitions. [2022-11-16 11:03:18,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 247 transitions, 1855 flow [2022-11-16 11:03:18,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 247 transitions, 1633 flow, removed 89 selfloop flow, removed 18 redundant places. [2022-11-16 11:03:18,309 INFO L231 Difference]: Finished difference. Result has 213 places, 187 transitions, 1114 flow [2022-11-16 11:03:18,309 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=907, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1114, PETRI_PLACES=213, PETRI_TRANSITIONS=187} [2022-11-16 11:03:18,310 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 125 predicate places. [2022-11-16 11:03:18,310 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 187 transitions, 1114 flow [2022-11-16 11:03:18,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:18,311 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:18,311 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:18,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:03:18,312 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:03:18,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:18,312 INFO L85 PathProgramCache]: Analyzing trace with hash 699227332, now seen corresponding path program 5 times [2022-11-16 11:03:18,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:18,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867928137] [2022-11-16 11:03:18,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:18,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:18,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:19,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:03:19,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:19,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867928137] [2022-11-16 11:03:19,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867928137] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:19,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:19,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:03:19,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476177695] [2022-11-16 11:03:19,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:19,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:03:19,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:19,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:03:19,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:03:19,102 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:03:19,103 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 187 transitions, 1114 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:19,103 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:19,103 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:03:19,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:20,966 INFO L130 PetriNetUnfolder]: 261/695 cut-off events. [2022-11-16 11:03:20,966 INFO L131 PetriNetUnfolder]: For 1967/1967 co-relation queries the response was YES. [2022-11-16 11:03:20,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2995 conditions, 695 events. 261/695 cut-off events. For 1967/1967 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3364 event pairs, 20 based on Foata normal form. 1/694 useless extension candidates. Maximal degree in co-relation 2932. Up to 446 conditions per place. [2022-11-16 11:03:20,975 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 131 selfloop transitions, 61 changer transitions 43/274 dead transitions. [2022-11-16 11:03:20,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 274 transitions, 2242 flow [2022-11-16 11:03:20,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 11:03:20,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 11:03:20,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1861 transitions. [2022-11-16 11:03:20,980 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5656534954407295 [2022-11-16 11:03:20,980 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1861 transitions. [2022-11-16 11:03:20,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1861 transitions. [2022-11-16 11:03:20,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:20,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1861 transitions. [2022-11-16 11:03:20,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.17142857142857) internal successors, (1861), 35 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:20,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:20,992 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:20,993 INFO L175 Difference]: Start difference. First operand has 213 places, 187 transitions, 1114 flow. Second operand 35 states and 1861 transitions. [2022-11-16 11:03:20,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 274 transitions, 2242 flow [2022-11-16 11:03:21,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 274 transitions, 1993 flow, removed 66 selfloop flow, removed 24 redundant places. [2022-11-16 11:03:21,012 INFO L231 Difference]: Finished difference. Result has 234 places, 215 transitions, 1438 flow [2022-11-16 11:03:21,013 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=972, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1438, PETRI_PLACES=234, PETRI_TRANSITIONS=215} [2022-11-16 11:03:21,014 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 146 predicate places. [2022-11-16 11:03:21,014 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 215 transitions, 1438 flow [2022-11-16 11:03:21,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:21,015 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:21,015 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:21,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:03:21,015 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:03:21,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:21,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1519473010, now seen corresponding path program 6 times [2022-11-16 11:03:21,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:21,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108181447] [2022-11-16 11:03:21,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:21,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:21,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:21,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:03:21,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:21,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108181447] [2022-11-16 11:03:21,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108181447] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:21,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:21,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:03:21,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591309453] [2022-11-16 11:03:21,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:21,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:03:21,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:21,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:03:21,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:03:21,785 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:03:21,786 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 215 transitions, 1438 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:21,787 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:21,787 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:03:21,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:23,368 INFO L130 PetriNetUnfolder]: 265/713 cut-off events. [2022-11-16 11:03:23,368 INFO L131 PetriNetUnfolder]: For 2399/2399 co-relation queries the response was YES. [2022-11-16 11:03:23,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3176 conditions, 713 events. 265/713 cut-off events. For 2399/2399 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3525 event pairs, 19 based on Foata normal form. 1/712 useless extension candidates. Maximal degree in co-relation 3104. Up to 459 conditions per place. [2022-11-16 11:03:23,376 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 126 selfloop transitions, 74 changer transitions 43/282 dead transitions. [2022-11-16 11:03:23,376 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 282 transitions, 2337 flow [2022-11-16 11:03:23,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 11:03:23,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-16 11:03:23,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1657 transitions. [2022-11-16 11:03:23,381 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5686341798215512 [2022-11-16 11:03:23,381 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1657 transitions. [2022-11-16 11:03:23,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1657 transitions. [2022-11-16 11:03:23,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:23,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1657 transitions. [2022-11-16 11:03:23,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.45161290322581) internal successors, (1657), 31 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:23,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:23,392 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:23,392 INFO L175 Difference]: Start difference. First operand has 234 places, 215 transitions, 1438 flow. Second operand 31 states and 1657 transitions. [2022-11-16 11:03:23,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 282 transitions, 2337 flow [2022-11-16 11:03:23,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 282 transitions, 2057 flow, removed 109 selfloop flow, removed 23 redundant places. [2022-11-16 11:03:23,418 INFO L231 Difference]: Finished difference. Result has 245 places, 224 transitions, 1536 flow [2022-11-16 11:03:23,418 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1238, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1536, PETRI_PLACES=245, PETRI_TRANSITIONS=224} [2022-11-16 11:03:23,419 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 157 predicate places. [2022-11-16 11:03:23,419 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 224 transitions, 1536 flow [2022-11-16 11:03:23,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:23,420 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:23,420 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:23,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:03:23,421 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:03:23,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:23,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1541157144, now seen corresponding path program 7 times [2022-11-16 11:03:23,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:23,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13363927] [2022-11-16 11:03:23,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:23,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:23,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:24,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:03:24,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:24,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13363927] [2022-11-16 11:03:24,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13363927] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:24,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:24,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:03:24,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15627126] [2022-11-16 11:03:24,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:24,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:03:24,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:24,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:03:24,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:03:24,125 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:03:24,126 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 224 transitions, 1536 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:24,126 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:24,126 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:03:24,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:25,777 INFO L130 PetriNetUnfolder]: 264/746 cut-off events. [2022-11-16 11:03:25,777 INFO L131 PetriNetUnfolder]: For 2496/2496 co-relation queries the response was YES. [2022-11-16 11:03:25,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3276 conditions, 746 events. 264/746 cut-off events. For 2496/2496 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3738 event pairs, 27 based on Foata normal form. 1/745 useless extension candidates. Maximal degree in co-relation 3202. Up to 448 conditions per place. [2022-11-16 11:03:25,785 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 124 selfloop transitions, 76 changer transitions 44/283 dead transitions. [2022-11-16 11:03:25,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 283 transitions, 2405 flow [2022-11-16 11:03:25,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 11:03:25,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-16 11:03:25,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1658 transitions. [2022-11-16 11:03:25,788 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5689773507206589 [2022-11-16 11:03:25,788 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1658 transitions. [2022-11-16 11:03:25,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1658 transitions. [2022-11-16 11:03:25,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:25,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1658 transitions. [2022-11-16 11:03:25,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.483870967741936) internal successors, (1658), 31 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:25,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:25,798 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:25,798 INFO L175 Difference]: Start difference. First operand has 245 places, 224 transitions, 1536 flow. Second operand 31 states and 1658 transitions. [2022-11-16 11:03:25,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 283 transitions, 2405 flow [2022-11-16 11:03:25,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 283 transitions, 2194 flow, removed 48 selfloop flow, removed 26 redundant places. [2022-11-16 11:03:25,825 INFO L231 Difference]: Finished difference. Result has 255 places, 224 transitions, 1617 flow [2022-11-16 11:03:25,825 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1378, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1617, PETRI_PLACES=255, PETRI_TRANSITIONS=224} [2022-11-16 11:03:25,826 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 167 predicate places. [2022-11-16 11:03:25,826 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 224 transitions, 1617 flow [2022-11-16 11:03:25,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:25,827 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:25,827 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:25,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:03:25,828 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:03:25,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:25,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1783083334, now seen corresponding path program 8 times [2022-11-16 11:03:25,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:25,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171241083] [2022-11-16 11:03:25,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:25,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:25,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:26,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:03:26,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:26,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171241083] [2022-11-16 11:03:26,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171241083] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:26,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:26,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:03:26,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65549395] [2022-11-16 11:03:26,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:26,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:03:26,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:26,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:03:26,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:03:26,591 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:03:26,592 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 224 transitions, 1617 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:26,592 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:26,592 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:03:26,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:28,095 INFO L130 PetriNetUnfolder]: 260/735 cut-off events. [2022-11-16 11:03:28,095 INFO L131 PetriNetUnfolder]: For 2603/2603 co-relation queries the response was YES. [2022-11-16 11:03:28,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3340 conditions, 735 events. 260/735 cut-off events. For 2603/2603 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3669 event pairs, 33 based on Foata normal form. 1/734 useless extension candidates. Maximal degree in co-relation 3261. Up to 456 conditions per place. [2022-11-16 11:03:28,104 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 126 selfloop transitions, 73 changer transitions 39/277 dead transitions. [2022-11-16 11:03:28,104 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 277 transitions, 2429 flow [2022-11-16 11:03:28,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 11:03:28,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 11:03:28,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1603 transitions. [2022-11-16 11:03:28,108 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5684397163120567 [2022-11-16 11:03:28,108 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1603 transitions. [2022-11-16 11:03:28,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1603 transitions. [2022-11-16 11:03:28,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:28,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1603 transitions. [2022-11-16 11:03:28,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.43333333333333) internal successors, (1603), 30 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:28,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:28,117 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:28,118 INFO L175 Difference]: Start difference. First operand has 255 places, 224 transitions, 1617 flow. Second operand 30 states and 1603 transitions. [2022-11-16 11:03:28,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 277 transitions, 2429 flow [2022-11-16 11:03:28,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 277 transitions, 2192 flow, removed 35 selfloop flow, removed 29 redundant places. [2022-11-16 11:03:28,144 INFO L231 Difference]: Finished difference. Result has 256 places, 223 transitions, 1629 flow [2022-11-16 11:03:28,145 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1412, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1629, PETRI_PLACES=256, PETRI_TRANSITIONS=223} [2022-11-16 11:03:28,145 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 168 predicate places. [2022-11-16 11:03:28,146 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 223 transitions, 1629 flow [2022-11-16 11:03:28,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:28,146 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:28,147 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:28,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:03:28,147 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:03:28,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:28,148 INFO L85 PathProgramCache]: Analyzing trace with hash -798716138, now seen corresponding path program 9 times [2022-11-16 11:03:28,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:28,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264961296] [2022-11-16 11:03:28,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:28,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:28,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:28,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:03:28,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:28,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264961296] [2022-11-16 11:03:28,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264961296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:28,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:28,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 11:03:28,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080981419] [2022-11-16 11:03:28,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:28,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 11:03:28,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:28,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 11:03:28,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:03:28,950 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:03:28,951 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 223 transitions, 1629 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:28,951 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:28,951 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:03:28,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:31,104 INFO L130 PetriNetUnfolder]: 261/743 cut-off events. [2022-11-16 11:03:31,105 INFO L131 PetriNetUnfolder]: For 2956/2956 co-relation queries the response was YES. [2022-11-16 11:03:31,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3420 conditions, 743 events. 261/743 cut-off events. For 2956/2956 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3705 event pairs, 25 based on Foata normal form. 1/743 useless extension candidates. Maximal degree in co-relation 3343. Up to 460 conditions per place. [2022-11-16 11:03:31,114 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 129 selfloop transitions, 94 changer transitions 29/291 dead transitions. [2022-11-16 11:03:31,114 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 291 transitions, 2637 flow [2022-11-16 11:03:31,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-16 11:03:31,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-11-16 11:03:31,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 2205 transitions. [2022-11-16 11:03:31,127 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5585106382978723 [2022-11-16 11:03:31,127 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 2205 transitions. [2022-11-16 11:03:31,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 2205 transitions. [2022-11-16 11:03:31,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:31,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 2205 transitions. [2022-11-16 11:03:31,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 52.5) internal successors, (2205), 42 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:31,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 94.0) internal successors, (4042), 43 states have internal predecessors, (4042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:31,163 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 94.0) internal successors, (4042), 43 states have internal predecessors, (4042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:31,164 INFO L175 Difference]: Start difference. First operand has 256 places, 223 transitions, 1629 flow. Second operand 42 states and 2205 transitions. [2022-11-16 11:03:31,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 291 transitions, 2637 flow [2022-11-16 11:03:31,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 291 transitions, 2381 flow, removed 68 selfloop flow, removed 28 redundant places. [2022-11-16 11:03:31,193 INFO L231 Difference]: Finished difference. Result has 273 places, 244 transitions, 1891 flow [2022-11-16 11:03:31,194 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1468, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=1891, PETRI_PLACES=273, PETRI_TRANSITIONS=244} [2022-11-16 11:03:31,196 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 185 predicate places. [2022-11-16 11:03:31,198 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 244 transitions, 1891 flow [2022-11-16 11:03:31,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:31,198 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:31,198 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:31,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:03:31,199 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:03:31,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:31,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1392706964, now seen corresponding path program 10 times [2022-11-16 11:03:31,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:31,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678248811] [2022-11-16 11:03:31,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:31,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:31,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:03:31,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:31,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678248811] [2022-11-16 11:03:31,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678248811] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:31,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:31,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:03:31,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66712224] [2022-11-16 11:03:31,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:31,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:03:31,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:31,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:03:31,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:03:31,944 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:03:31,945 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 244 transitions, 1891 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:31,945 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:31,945 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:03:31,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:33,587 INFO L130 PetriNetUnfolder]: 261/745 cut-off events. [2022-11-16 11:03:33,587 INFO L131 PetriNetUnfolder]: For 3283/3283 co-relation queries the response was YES. [2022-11-16 11:03:33,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3603 conditions, 745 events. 261/745 cut-off events. For 3283/3283 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3789 event pairs, 24 based on Foata normal form. 1/744 useless extension candidates. Maximal degree in co-relation 3521. Up to 477 conditions per place. [2022-11-16 11:03:33,597 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 138 selfloop transitions, 78 changer transitions 32/287 dead transitions. [2022-11-16 11:03:33,597 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 287 transitions, 2626 flow [2022-11-16 11:03:33,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 11:03:33,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-16 11:03:33,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1745 transitions. [2022-11-16 11:03:33,600 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5625402965828498 [2022-11-16 11:03:33,600 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1745 transitions. [2022-11-16 11:03:33,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1745 transitions. [2022-11-16 11:03:33,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:33,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1745 transitions. [2022-11-16 11:03:33,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 52.878787878787875) internal successors, (1745), 33 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:33,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:33,610 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:33,610 INFO L175 Difference]: Start difference. First operand has 273 places, 244 transitions, 1891 flow. Second operand 33 states and 1745 transitions. [2022-11-16 11:03:33,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 287 transitions, 2626 flow [2022-11-16 11:03:33,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 287 transitions, 2308 flow, removed 96 selfloop flow, removed 27 redundant places. [2022-11-16 11:03:33,643 INFO L231 Difference]: Finished difference. Result has 280 places, 241 transitions, 1804 flow [2022-11-16 11:03:33,644 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1623, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1804, PETRI_PLACES=280, PETRI_TRANSITIONS=241} [2022-11-16 11:03:33,644 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 192 predicate places. [2022-11-16 11:03:33,645 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 241 transitions, 1804 flow [2022-11-16 11:03:33,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:33,645 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:33,645 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:33,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:03:33,646 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:03:33,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:33,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1406267310, now seen corresponding path program 11 times [2022-11-16 11:03:33,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:33,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846202989] [2022-11-16 11:03:33,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:33,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:33,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:34,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:03:34,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:34,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846202989] [2022-11-16 11:03:34,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846202989] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:34,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:34,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:03:34,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844346949] [2022-11-16 11:03:34,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:34,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:03:34,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:34,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:03:34,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:03:34,369 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:03:34,370 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 241 transitions, 1804 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:34,370 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:34,370 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:03:34,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:35,906 INFO L130 PetriNetUnfolder]: 251/705 cut-off events. [2022-11-16 11:03:35,906 INFO L131 PetriNetUnfolder]: For 2893/2893 co-relation queries the response was YES. [2022-11-16 11:03:35,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3435 conditions, 705 events. 251/705 cut-off events. For 2893/2893 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3435 event pairs, 22 based on Foata normal form. 1/705 useless extension candidates. Maximal degree in co-relation 3351. Up to 465 conditions per place. [2022-11-16 11:03:35,918 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 134 selfloop transitions, 75 changer transitions 26/274 dead transitions. [2022-11-16 11:03:35,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 274 transitions, 2427 flow [2022-11-16 11:03:35,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 11:03:35,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-16 11:03:35,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1639 transitions. [2022-11-16 11:03:35,925 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5624571036376115 [2022-11-16 11:03:35,926 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1639 transitions. [2022-11-16 11:03:35,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1639 transitions. [2022-11-16 11:03:35,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:35,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1639 transitions. [2022-11-16 11:03:35,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 52.87096774193548) internal successors, (1639), 31 states have internal predecessors, (1639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:35,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:35,935 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:35,935 INFO L175 Difference]: Start difference. First operand has 280 places, 241 transitions, 1804 flow. Second operand 31 states and 1639 transitions. [2022-11-16 11:03:35,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 274 transitions, 2427 flow [2022-11-16 11:03:35,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 274 transitions, 2189 flow, removed 25 selfloop flow, removed 33 redundant places. [2022-11-16 11:03:35,967 INFO L231 Difference]: Finished difference. Result has 274 places, 234 transitions, 1729 flow [2022-11-16 11:03:35,968 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1582, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1729, PETRI_PLACES=274, PETRI_TRANSITIONS=234} [2022-11-16 11:03:35,969 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 186 predicate places. [2022-11-16 11:03:35,969 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 234 transitions, 1729 flow [2022-11-16 11:03:35,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:35,970 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:35,970 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:35,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:03:35,970 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:03:35,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:35,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1692710944, now seen corresponding path program 12 times [2022-11-16 11:03:35,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:35,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782077279] [2022-11-16 11:03:35,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:35,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:36,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:03:36,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:36,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782077279] [2022-11-16 11:03:36,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782077279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:36,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:36,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-16 11:03:36,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323423422] [2022-11-16 11:03:36,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:36,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:03:36,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:36,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:03:36,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:03:36,716 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:03:36,718 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 234 transitions, 1729 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:36,718 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:36,718 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:03:36,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:38,269 INFO L130 PetriNetUnfolder]: 244/700 cut-off events. [2022-11-16 11:03:38,270 INFO L131 PetriNetUnfolder]: For 2595/2595 co-relation queries the response was YES. [2022-11-16 11:03:38,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3293 conditions, 700 events. 244/700 cut-off events. For 2595/2595 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3348 event pairs, 32 based on Foata normal form. 1/700 useless extension candidates. Maximal degree in co-relation 3212. Up to 460 conditions per place. [2022-11-16 11:03:38,278 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 130 selfloop transitions, 75 changer transitions 19/263 dead transitions. [2022-11-16 11:03:38,278 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 263 transitions, 2301 flow [2022-11-16 11:03:38,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 11:03:38,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-16 11:03:38,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1633 transitions. [2022-11-16 11:03:38,281 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.560398078242965 [2022-11-16 11:03:38,281 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1633 transitions. [2022-11-16 11:03:38,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1633 transitions. [2022-11-16 11:03:38,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:38,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1633 transitions. [2022-11-16 11:03:38,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 52.67741935483871) internal successors, (1633), 31 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:38,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:38,291 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:38,291 INFO L175 Difference]: Start difference. First operand has 274 places, 234 transitions, 1729 flow. Second operand 31 states and 1633 transitions. [2022-11-16 11:03:38,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 263 transitions, 2301 flow [2022-11-16 11:03:38,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 263 transitions, 2097 flow, removed 17 selfloop flow, removed 33 redundant places. [2022-11-16 11:03:38,317 INFO L231 Difference]: Finished difference. Result has 267 places, 231 transitions, 1700 flow [2022-11-16 11:03:38,318 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1537, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1700, PETRI_PLACES=267, PETRI_TRANSITIONS=231} [2022-11-16 11:03:38,319 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 179 predicate places. [2022-11-16 11:03:38,319 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 231 transitions, 1700 flow [2022-11-16 11:03:38,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:38,319 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:38,320 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:38,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:03:38,320 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:03:38,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:38,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1360263200, now seen corresponding path program 13 times [2022-11-16 11:03:38,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:38,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746647865] [2022-11-16 11:03:38,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:38,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:38,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:39,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:03:39,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:39,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746647865] [2022-11-16 11:03:39,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746647865] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:39,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:39,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 11:03:39,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522754616] [2022-11-16 11:03:39,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:39,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 11:03:39,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:39,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 11:03:39,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:03:39,093 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:03:39,094 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 231 transitions, 1700 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:39,094 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:39,094 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:03:39,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:40,633 INFO L130 PetriNetUnfolder]: 238/686 cut-off events. [2022-11-16 11:03:40,633 INFO L131 PetriNetUnfolder]: For 2359/2359 co-relation queries the response was YES. [2022-11-16 11:03:40,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3181 conditions, 686 events. 238/686 cut-off events. For 2359/2359 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3219 event pairs, 35 based on Foata normal form. 1/685 useless extension candidates. Maximal degree in co-relation 3104. Up to 452 conditions per place. [2022-11-16 11:03:40,639 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 123 selfloop transitions, 65 changer transitions 26/253 dead transitions. [2022-11-16 11:03:40,639 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 253 transitions, 2225 flow [2022-11-16 11:03:40,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 11:03:40,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-16 11:03:40,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1677 transitions. [2022-11-16 11:03:40,643 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5575132978723404 [2022-11-16 11:03:40,644 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1677 transitions. [2022-11-16 11:03:40,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1677 transitions. [2022-11-16 11:03:40,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:40,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1677 transitions. [2022-11-16 11:03:40,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.40625) internal successors, (1677), 32 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:40,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:40,653 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:40,653 INFO L175 Difference]: Start difference. First operand has 267 places, 231 transitions, 1700 flow. Second operand 32 states and 1677 transitions. [2022-11-16 11:03:40,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 253 transitions, 2225 flow [2022-11-16 11:03:40,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 253 transitions, 2037 flow, removed 9 selfloop flow, removed 31 redundant places. [2022-11-16 11:03:40,678 INFO L231 Difference]: Finished difference. Result has 264 places, 215 transitions, 1558 flow [2022-11-16 11:03:40,678 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1558, PETRI_PLACES=264, PETRI_TRANSITIONS=215} [2022-11-16 11:03:40,679 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 176 predicate places. [2022-11-16 11:03:40,679 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 215 transitions, 1558 flow [2022-11-16 11:03:40,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:40,680 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:40,680 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:40,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:03:40,680 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:03:40,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:40,681 INFO L85 PathProgramCache]: Analyzing trace with hash 6627344, now seen corresponding path program 14 times [2022-11-16 11:03:40,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:40,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51378314] [2022-11-16 11:03:40,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:40,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:40,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:41,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:03:41,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:41,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51378314] [2022-11-16 11:03:41,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51378314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:41,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:41,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:03:41,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548305508] [2022-11-16 11:03:41,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:41,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:03:41,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:41,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:03:41,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:03:41,355 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:03:41,356 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 215 transitions, 1558 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:41,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:41,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:03:41,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:43,048 INFO L130 PetriNetUnfolder]: 260/745 cut-off events. [2022-11-16 11:03:43,049 INFO L131 PetriNetUnfolder]: For 2571/2571 co-relation queries the response was YES. [2022-11-16 11:03:43,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3362 conditions, 745 events. 260/745 cut-off events. For 2571/2571 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3750 event pairs, 38 based on Foata normal form. 1/743 useless extension candidates. Maximal degree in co-relation 3287. Up to 436 conditions per place. [2022-11-16 11:03:43,054 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 120 selfloop transitions, 83 changer transitions 42/284 dead transitions. [2022-11-16 11:03:43,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 284 transitions, 2512 flow [2022-11-16 11:03:43,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 11:03:43,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 11:03:43,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1861 transitions. [2022-11-16 11:03:43,057 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5656534954407295 [2022-11-16 11:03:43,057 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1861 transitions. [2022-11-16 11:03:43,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1861 transitions. [2022-11-16 11:03:43,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:43,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1861 transitions. [2022-11-16 11:03:43,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.17142857142857) internal successors, (1861), 35 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:43,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:43,068 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:43,068 INFO L175 Difference]: Start difference. First operand has 264 places, 215 transitions, 1558 flow. Second operand 35 states and 1861 transitions. [2022-11-16 11:03:43,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 284 transitions, 2512 flow [2022-11-16 11:03:43,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 284 transitions, 2221 flow, removed 45 selfloop flow, removed 29 redundant places. [2022-11-16 11:03:43,095 INFO L231 Difference]: Finished difference. Result has 256 places, 224 transitions, 1654 flow [2022-11-16 11:03:43,096 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1329, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1654, PETRI_PLACES=256, PETRI_TRANSITIONS=224} [2022-11-16 11:03:43,096 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 168 predicate places. [2022-11-16 11:03:43,096 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 224 transitions, 1654 flow [2022-11-16 11:03:43,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:43,097 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:43,097 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:43,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:03:43,098 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:03:43,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:43,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1409575526, now seen corresponding path program 15 times [2022-11-16 11:03:43,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:43,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701254607] [2022-11-16 11:03:43,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:43,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:43,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:43,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:03:43,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:43,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701254607] [2022-11-16 11:03:43,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701254607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:43,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:43,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:03:43,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398928989] [2022-11-16 11:03:43,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:43,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:03:43,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:43,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:03:43,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:03:43,783 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:03:43,784 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 224 transitions, 1654 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:43,784 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:43,784 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:03:43,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:45,320 INFO L130 PetriNetUnfolder]: 272/762 cut-off events. [2022-11-16 11:03:45,321 INFO L131 PetriNetUnfolder]: For 3720/3720 co-relation queries the response was YES. [2022-11-16 11:03:45,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3673 conditions, 762 events. 272/762 cut-off events. For 3720/3720 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3706 event pairs, 24 based on Foata normal form. 1/760 useless extension candidates. Maximal degree in co-relation 3596. Up to 458 conditions per place. [2022-11-16 11:03:45,330 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 138 selfloop transitions, 101 changer transitions 22/300 dead transitions. [2022-11-16 11:03:45,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 300 transitions, 2850 flow [2022-11-16 11:03:45,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 11:03:45,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-16 11:03:45,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1818 transitions. [2022-11-16 11:03:45,334 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5688360450563203 [2022-11-16 11:03:45,335 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1818 transitions. [2022-11-16 11:03:45,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1818 transitions. [2022-11-16 11:03:45,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:45,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1818 transitions. [2022-11-16 11:03:45,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.470588235294116) internal successors, (1818), 34 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:45,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:45,344 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:45,345 INFO L175 Difference]: Start difference. First operand has 256 places, 224 transitions, 1654 flow. Second operand 34 states and 1818 transitions. [2022-11-16 11:03:45,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 300 transitions, 2850 flow [2022-11-16 11:03:45,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 300 transitions, 2572 flow, removed 73 selfloop flow, removed 29 redundant places. [2022-11-16 11:03:45,378 INFO L231 Difference]: Finished difference. Result has 260 places, 251 transitions, 2016 flow [2022-11-16 11:03:45,379 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1455, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2016, PETRI_PLACES=260, PETRI_TRANSITIONS=251} [2022-11-16 11:03:45,379 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 172 predicate places. [2022-11-16 11:03:45,380 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 251 transitions, 2016 flow [2022-11-16 11:03:45,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:45,380 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:45,380 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:45,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:03:45,381 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:03:45,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:45,381 INFO L85 PathProgramCache]: Analyzing trace with hash 2084111022, now seen corresponding path program 16 times [2022-11-16 11:03:45,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:45,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287850813] [2022-11-16 11:03:45,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:45,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:46,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:03:46,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:46,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287850813] [2022-11-16 11:03:46,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287850813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:46,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:46,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-16 11:03:46,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296552900] [2022-11-16 11:03:46,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:46,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:03:46,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:46,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:03:46,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:03:46,082 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:03:46,086 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 251 transitions, 2016 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:46,087 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:46,087 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:03:46,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:47,483 INFO L130 PetriNetUnfolder]: 280/785 cut-off events. [2022-11-16 11:03:47,484 INFO L131 PetriNetUnfolder]: For 3938/3938 co-relation queries the response was YES. [2022-11-16 11:03:47,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3914 conditions, 785 events. 280/785 cut-off events. For 3938/3938 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3919 event pairs, 25 based on Foata normal form. 1/783 useless extension candidates. Maximal degree in co-relation 3839. Up to 487 conditions per place. [2022-11-16 11:03:47,491 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 151 selfloop transitions, 89 changer transitions 29/308 dead transitions. [2022-11-16 11:03:47,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 308 transitions, 3040 flow [2022-11-16 11:03:47,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-16 11:03:47,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-16 11:03:47,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1560 transitions. [2022-11-16 11:03:47,494 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5722670579603815 [2022-11-16 11:03:47,494 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1560 transitions. [2022-11-16 11:03:47,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1560 transitions. [2022-11-16 11:03:47,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:47,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1560 transitions. [2022-11-16 11:03:47,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 53.793103448275865) internal successors, (1560), 29 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:47,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:47,502 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:47,502 INFO L175 Difference]: Start difference. First operand has 260 places, 251 transitions, 2016 flow. Second operand 29 states and 1560 transitions. [2022-11-16 11:03:47,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 308 transitions, 3040 flow [2022-11-16 11:03:47,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 308 transitions, 2719 flow, removed 122 selfloop flow, removed 14 redundant places. [2022-11-16 11:03:47,544 INFO L231 Difference]: Finished difference. Result has 278 places, 259 transitions, 2077 flow [2022-11-16 11:03:47,544 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1743, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2077, PETRI_PLACES=278, PETRI_TRANSITIONS=259} [2022-11-16 11:03:47,545 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 190 predicate places. [2022-11-16 11:03:47,545 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 259 transitions, 2077 flow [2022-11-16 11:03:47,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:47,545 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:47,545 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:47,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 11:03:47,546 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:03:47,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:47,546 INFO L85 PathProgramCache]: Analyzing trace with hash -2051877010, now seen corresponding path program 17 times [2022-11-16 11:03:47,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:47,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428478553] [2022-11-16 11:03:47,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:47,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:48,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:03:48,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:48,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428478553] [2022-11-16 11:03:48,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428478553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:48,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:48,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:03:48,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821485482] [2022-11-16 11:03:48,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:48,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:03:48,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:48,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:03:48,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:03:48,172 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:03:48,173 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 259 transitions, 2077 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:48,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:48,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:03:48,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:49,648 INFO L130 PetriNetUnfolder]: 278/784 cut-off events. [2022-11-16 11:03:49,649 INFO L131 PetriNetUnfolder]: For 4212/4212 co-relation queries the response was YES. [2022-11-16 11:03:49,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3998 conditions, 784 events. 278/784 cut-off events. For 4212/4212 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3944 event pairs, 25 based on Foata normal form. 1/782 useless extension candidates. Maximal degree in co-relation 3914. Up to 483 conditions per place. [2022-11-16 11:03:49,657 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 149 selfloop transitions, 85 changer transitions 35/308 dead transitions. [2022-11-16 11:03:49,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 308 transitions, 3007 flow [2022-11-16 11:03:49,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 11:03:49,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-16 11:03:49,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1658 transitions. [2022-11-16 11:03:49,660 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5689773507206589 [2022-11-16 11:03:49,660 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1658 transitions. [2022-11-16 11:03:49,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1658 transitions. [2022-11-16 11:03:49,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:49,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1658 transitions. [2022-11-16 11:03:49,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.483870967741936) internal successors, (1658), 31 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:49,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:49,668 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:49,668 INFO L175 Difference]: Start difference. First operand has 278 places, 259 transitions, 2077 flow. Second operand 31 states and 1658 transitions. [2022-11-16 11:03:49,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 308 transitions, 3007 flow [2022-11-16 11:03:49,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 308 transitions, 2721 flow, removed 64 selfloop flow, removed 27 redundant places. [2022-11-16 11:03:49,705 INFO L231 Difference]: Finished difference. Result has 286 places, 256 transitions, 2053 flow [2022-11-16 11:03:49,706 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1831, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2053, PETRI_PLACES=286, PETRI_TRANSITIONS=256} [2022-11-16 11:03:49,706 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 198 predicate places. [2022-11-16 11:03:49,706 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 256 transitions, 2053 flow [2022-11-16 11:03:49,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:49,707 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:49,707 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:49,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 11:03:49,708 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:03:49,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:49,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1422442310, now seen corresponding path program 18 times [2022-11-16 11:03:49,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:49,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495740858] [2022-11-16 11:03:49,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:49,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:49,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:50,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:03:50,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:50,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495740858] [2022-11-16 11:03:50,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495740858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:50,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:50,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:03:50,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310306962] [2022-11-16 11:03:50,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:50,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:03:50,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:50,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:03:50,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:03:50,354 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:03:50,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 256 transitions, 2053 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:50,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:50,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:03:50,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:51,906 INFO L130 PetriNetUnfolder]: 274/768 cut-off events. [2022-11-16 11:03:51,906 INFO L131 PetriNetUnfolder]: For 3948/3948 co-relation queries the response was YES. [2022-11-16 11:03:51,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3953 conditions, 768 events. 274/768 cut-off events. For 3948/3948 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3810 event pairs, 24 based on Foata normal form. 1/766 useless extension candidates. Maximal degree in co-relation 3868. Up to 481 conditions per place. [2022-11-16 11:03:51,916 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 147 selfloop transitions, 92 changer transitions 26/304 dead transitions. [2022-11-16 11:03:51,916 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 304 transitions, 2973 flow [2022-11-16 11:03:51,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 11:03:51,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 11:03:51,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1606 transitions. [2022-11-16 11:03:51,919 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5695035460992908 [2022-11-16 11:03:51,919 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1606 transitions. [2022-11-16 11:03:51,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1606 transitions. [2022-11-16 11:03:51,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:51,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1606 transitions. [2022-11-16 11:03:51,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.53333333333333) internal successors, (1606), 30 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:51,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:51,950 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:51,950 INFO L175 Difference]: Start difference. First operand has 286 places, 256 transitions, 2053 flow. Second operand 30 states and 1606 transitions. [2022-11-16 11:03:51,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 304 transitions, 2973 flow [2022-11-16 11:03:51,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 304 transitions, 2719 flow, removed 24 selfloop flow, removed 28 redundant places. [2022-11-16 11:03:51,987 INFO L231 Difference]: Finished difference. Result has 286 places, 259 transitions, 2104 flow [2022-11-16 11:03:51,988 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1826, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2104, PETRI_PLACES=286, PETRI_TRANSITIONS=259} [2022-11-16 11:03:51,988 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 198 predicate places. [2022-11-16 11:03:51,989 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 259 transitions, 2104 flow [2022-11-16 11:03:51,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:51,989 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:51,989 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:51,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 11:03:51,990 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:03:51,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:51,990 INFO L85 PathProgramCache]: Analyzing trace with hash 2093389318, now seen corresponding path program 19 times [2022-11-16 11:03:51,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:51,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615141718] [2022-11-16 11:03:51,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:51,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:52,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:03:52,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:52,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615141718] [2022-11-16 11:03:52,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615141718] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:52,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:52,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:03:52,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127742805] [2022-11-16 11:03:52,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:52,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:03:52,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:52,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:03:52,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:03:52,665 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:03:52,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 259 transitions, 2104 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:52,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:52,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:03:52,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:54,083 INFO L130 PetriNetUnfolder]: 280/787 cut-off events. [2022-11-16 11:03:54,083 INFO L131 PetriNetUnfolder]: For 4356/4356 co-relation queries the response was YES. [2022-11-16 11:03:54,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4093 conditions, 787 events. 280/787 cut-off events. For 4356/4356 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3991 event pairs, 26 based on Foata normal form. 1/784 useless extension candidates. Maximal degree in co-relation 4008. Up to 511 conditions per place. [2022-11-16 11:03:54,090 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 165 selfloop transitions, 78 changer transitions 30/312 dead transitions. [2022-11-16 11:03:54,090 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 312 transitions, 3125 flow [2022-11-16 11:03:54,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 11:03:54,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-16 11:03:54,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1651 transitions. [2022-11-16 11:03:54,093 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5665751544269046 [2022-11-16 11:03:54,093 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1651 transitions. [2022-11-16 11:03:54,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1651 transitions. [2022-11-16 11:03:54,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:54,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1651 transitions. [2022-11-16 11:03:54,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.25806451612903) internal successors, (1651), 31 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:54,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:54,099 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:54,100 INFO L175 Difference]: Start difference. First operand has 286 places, 259 transitions, 2104 flow. Second operand 31 states and 1651 transitions. [2022-11-16 11:03:54,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 312 transitions, 3125 flow [2022-11-16 11:03:54,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 312 transitions, 2890 flow, removed 47 selfloop flow, removed 26 redundant places. [2022-11-16 11:03:54,138 INFO L231 Difference]: Finished difference. Result has 297 places, 266 transitions, 2244 flow [2022-11-16 11:03:54,139 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1925, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2244, PETRI_PLACES=297, PETRI_TRANSITIONS=266} [2022-11-16 11:03:54,139 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 209 predicate places. [2022-11-16 11:03:54,139 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 266 transitions, 2244 flow [2022-11-16 11:03:54,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:54,140 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:54,140 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:54,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 11:03:54,141 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:03:54,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:54,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1511959520, now seen corresponding path program 20 times [2022-11-16 11:03:54,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:54,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668107002] [2022-11-16 11:03:54,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:54,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:54,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:54,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:03:54,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:54,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668107002] [2022-11-16 11:03:54,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668107002] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:54,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:54,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:03:54,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933463586] [2022-11-16 11:03:54,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:54,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:03:54,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:54,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:03:54,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:03:54,840 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:03:54,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 266 transitions, 2244 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:54,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:54,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:03:54,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:56,443 INFO L130 PetriNetUnfolder]: 278/791 cut-off events. [2022-11-16 11:03:56,443 INFO L131 PetriNetUnfolder]: For 4502/4502 co-relation queries the response was YES. [2022-11-16 11:03:56,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4160 conditions, 791 events. 278/791 cut-off events. For 4502/4502 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 4037 event pairs, 23 based on Foata normal form. 1/789 useless extension candidates. Maximal degree in co-relation 4069. Up to 503 conditions per place. [2022-11-16 11:03:56,450 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 155 selfloop transitions, 86 changer transitions 30/310 dead transitions. [2022-11-16 11:03:56,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 310 transitions, 3174 flow [2022-11-16 11:03:56,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 11:03:56,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-16 11:03:56,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1701 transitions. [2022-11-16 11:03:56,453 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5654920212765957 [2022-11-16 11:03:56,453 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1701 transitions. [2022-11-16 11:03:56,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1701 transitions. [2022-11-16 11:03:56,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:56,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1701 transitions. [2022-11-16 11:03:56,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.15625) internal successors, (1701), 32 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:56,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:56,460 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:56,461 INFO L175 Difference]: Start difference. First operand has 297 places, 266 transitions, 2244 flow. Second operand 32 states and 1701 transitions. [2022-11-16 11:03:56,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 310 transitions, 3174 flow [2022-11-16 11:03:56,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 310 transitions, 2977 flow, removed 39 selfloop flow, removed 26 redundant places. [2022-11-16 11:03:56,504 INFO L231 Difference]: Finished difference. Result has 304 places, 264 transitions, 2304 flow [2022-11-16 11:03:56,504 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2077, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2304, PETRI_PLACES=304, PETRI_TRANSITIONS=264} [2022-11-16 11:03:56,505 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 216 predicate places. [2022-11-16 11:03:56,505 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 264 transitions, 2304 flow [2022-11-16 11:03:56,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:56,505 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:56,506 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:56,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 11:03:56,506 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:03:56,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:56,507 INFO L85 PathProgramCache]: Analyzing trace with hash -462340898, now seen corresponding path program 21 times [2022-11-16 11:03:56,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:56,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620992128] [2022-11-16 11:03:56,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:56,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:56,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:57,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:03:57,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:57,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620992128] [2022-11-16 11:03:57,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620992128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:57,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:57,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:03:57,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130418244] [2022-11-16 11:03:57,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:57,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:03:57,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:57,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:03:57,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:03:57,117 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:03:57,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 264 transitions, 2304 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:57,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:57,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:03:57,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:58,579 INFO L130 PetriNetUnfolder]: 274/774 cut-off events. [2022-11-16 11:03:58,579 INFO L131 PetriNetUnfolder]: For 4678/4678 co-relation queries the response was YES. [2022-11-16 11:03:58,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4169 conditions, 774 events. 274/774 cut-off events. For 4678/4678 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3874 event pairs, 21 based on Foata normal form. 1/772 useless extension candidates. Maximal degree in co-relation 4077. Up to 472 conditions per place. [2022-11-16 11:03:58,587 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 151 selfloop transitions, 98 changer transitions 26/314 dead transitions. [2022-11-16 11:03:58,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 314 transitions, 3258 flow [2022-11-16 11:03:58,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 11:03:58,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-16 11:03:58,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1659 transitions. [2022-11-16 11:03:58,590 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5693205216197667 [2022-11-16 11:03:58,591 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1659 transitions. [2022-11-16 11:03:58,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1659 transitions. [2022-11-16 11:03:58,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:58,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1659 transitions. [2022-11-16 11:03:58,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.516129032258064) internal successors, (1659), 31 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:58,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:58,598 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:58,598 INFO L175 Difference]: Start difference. First operand has 304 places, 264 transitions, 2304 flow. Second operand 31 states and 1659 transitions. [2022-11-16 11:03:58,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 314 transitions, 3258 flow [2022-11-16 11:03:58,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 314 transitions, 3017 flow, removed 49 selfloop flow, removed 30 redundant places. [2022-11-16 11:03:58,641 INFO L231 Difference]: Finished difference. Result has 305 places, 267 transitions, 2388 flow [2022-11-16 11:03:58,642 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2109, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2388, PETRI_PLACES=305, PETRI_TRANSITIONS=267} [2022-11-16 11:03:58,642 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 217 predicate places. [2022-11-16 11:03:58,642 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 267 transitions, 2388 flow [2022-11-16 11:03:58,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:58,643 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:58,643 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:58,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 11:03:58,643 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:03:58,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:58,644 INFO L85 PathProgramCache]: Analyzing trace with hash 51004620, now seen corresponding path program 22 times [2022-11-16 11:03:58,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:58,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85903446] [2022-11-16 11:03:58,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:58,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:59,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:03:59,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:59,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85903446] [2022-11-16 11:03:59,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85903446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:59,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:59,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-16 11:03:59,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169625345] [2022-11-16 11:03:59,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:59,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:03:59,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:59,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:03:59,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:03:59,340 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:03:59,341 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 267 transitions, 2388 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:59,341 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:59,341 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:03:59,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:01,029 INFO L130 PetriNetUnfolder]: 275/773 cut-off events. [2022-11-16 11:04:01,029 INFO L131 PetriNetUnfolder]: For 4201/4201 co-relation queries the response was YES. [2022-11-16 11:04:01,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4227 conditions, 773 events. 275/773 cut-off events. For 4201/4201 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3859 event pairs, 22 based on Foata normal form. 1/771 useless extension candidates. Maximal degree in co-relation 4133. Up to 503 conditions per place. [2022-11-16 11:04:01,035 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 158 selfloop transitions, 86 changer transitions 29/312 dead transitions. [2022-11-16 11:04:01,035 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 312 transitions, 3292 flow [2022-11-16 11:04:01,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 11:04:01,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 11:04:01,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1848 transitions. [2022-11-16 11:04:01,041 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5617021276595745 [2022-11-16 11:04:01,042 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1848 transitions. [2022-11-16 11:04:01,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1848 transitions. [2022-11-16 11:04:01,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:01,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1848 transitions. [2022-11-16 11:04:01,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.8) internal successors, (1848), 35 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:01,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:01,049 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:01,049 INFO L175 Difference]: Start difference. First operand has 305 places, 267 transitions, 2388 flow. Second operand 35 states and 1848 transitions. [2022-11-16 11:04:01,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 312 transitions, 3292 flow [2022-11-16 11:04:01,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 312 transitions, 3022 flow, removed 33 selfloop flow, removed 28 redundant places. [2022-11-16 11:04:01,091 INFO L231 Difference]: Finished difference. Result has 313 places, 267 transitions, 2371 flow [2022-11-16 11:04:01,091 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2169, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2371, PETRI_PLACES=313, PETRI_TRANSITIONS=267} [2022-11-16 11:04:01,092 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 225 predicate places. [2022-11-16 11:04:01,092 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 267 transitions, 2371 flow [2022-11-16 11:04:01,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:01,092 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:01,092 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:04:01,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 11:04:01,093 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:04:01,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:01,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1553455864, now seen corresponding path program 23 times [2022-11-16 11:04:01,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:01,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386668282] [2022-11-16 11:04:01,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:01,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:01,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:01,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:01,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:01,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386668282] [2022-11-16 11:04:01,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386668282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:04:01,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:04:01,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:04:01,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109542083] [2022-11-16 11:04:01,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:04:01,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:04:01,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:01,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:04:01,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:04:01,710 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:04:01,711 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 267 transitions, 2371 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:01,711 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:01,711 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:04:01,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:03,229 INFO L130 PetriNetUnfolder]: 274/770 cut-off events. [2022-11-16 11:04:03,230 INFO L131 PetriNetUnfolder]: For 4314/4314 co-relation queries the response was YES. [2022-11-16 11:04:03,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4202 conditions, 770 events. 274/770 cut-off events. For 4314/4314 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3821 event pairs, 18 based on Foata normal form. 1/769 useless extension candidates. Maximal degree in co-relation 4113. Up to 492 conditions per place. [2022-11-16 11:04:03,238 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 158 selfloop transitions, 96 changer transitions 21/314 dead transitions. [2022-11-16 11:04:03,238 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 314 transitions, 3306 flow [2022-11-16 11:04:03,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 11:04:03,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-16 11:04:03,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1706 transitions. [2022-11-16 11:04:03,241 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.567154255319149 [2022-11-16 11:04:03,241 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1706 transitions. [2022-11-16 11:04:03,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1706 transitions. [2022-11-16 11:04:03,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:03,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1706 transitions. [2022-11-16 11:04:03,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.3125) internal successors, (1706), 32 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:03,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:03,248 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:03,248 INFO L175 Difference]: Start difference. First operand has 313 places, 267 transitions, 2371 flow. Second operand 32 states and 1706 transitions. [2022-11-16 11:04:03,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 314 transitions, 3306 flow [2022-11-16 11:04:03,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 314 transitions, 2999 flow, removed 43 selfloop flow, removed 31 redundant places. [2022-11-16 11:04:03,289 INFO L231 Difference]: Finished difference. Result has 314 places, 273 transitions, 2425 flow [2022-11-16 11:04:03,290 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2104, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2425, PETRI_PLACES=314, PETRI_TRANSITIONS=273} [2022-11-16 11:04:03,290 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 226 predicate places. [2022-11-16 11:04:03,290 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 273 transitions, 2425 flow [2022-11-16 11:04:03,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:03,291 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:03,291 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:04:03,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-16 11:04:03,294 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:04:03,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:03,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1348201146, now seen corresponding path program 24 times [2022-11-16 11:04:03,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:03,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011502504] [2022-11-16 11:04:03,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:03,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:03,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:03,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:03,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011502504] [2022-11-16 11:04:03,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011502504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:04:03,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:04:03,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:04:03,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075912286] [2022-11-16 11:04:03,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:04:03,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:04:03,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:03,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:04:03,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:04:03,874 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:04:03,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 273 transitions, 2425 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:03,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:03,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:04:03,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:05,274 INFO L130 PetriNetUnfolder]: 267/758 cut-off events. [2022-11-16 11:04:05,274 INFO L131 PetriNetUnfolder]: For 4154/4154 co-relation queries the response was YES. [2022-11-16 11:04:05,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4128 conditions, 758 events. 267/758 cut-off events. For 4154/4154 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3769 event pairs, 19 based on Foata normal form. 1/756 useless extension candidates. Maximal degree in co-relation 4036. Up to 496 conditions per place. [2022-11-16 11:04:05,280 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 159 selfloop transitions, 90 changer transitions 18/306 dead transitions. [2022-11-16 11:04:05,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 306 transitions, 3149 flow [2022-11-16 11:04:05,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 11:04:05,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 11:04:05,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1597 transitions. [2022-11-16 11:04:05,282 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5663120567375887 [2022-11-16 11:04:05,283 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1597 transitions. [2022-11-16 11:04:05,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1597 transitions. [2022-11-16 11:04:05,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:05,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1597 transitions. [2022-11-16 11:04:05,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.233333333333334) internal successors, (1597), 30 states have internal predecessors, (1597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:05,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:05,286 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:05,286 INFO L175 Difference]: Start difference. First operand has 314 places, 273 transitions, 2425 flow. Second operand 30 states and 1597 transitions. [2022-11-16 11:04:05,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 306 transitions, 3149 flow [2022-11-16 11:04:05,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 306 transitions, 2963 flow, removed 30 selfloop flow, removed 25 redundant places. [2022-11-16 11:04:05,314 INFO L231 Difference]: Finished difference. Result has 319 places, 270 transitions, 2436 flow [2022-11-16 11:04:05,314 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2247, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2436, PETRI_PLACES=319, PETRI_TRANSITIONS=270} [2022-11-16 11:04:05,315 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 231 predicate places. [2022-11-16 11:04:05,315 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 270 transitions, 2436 flow [2022-11-16 11:04:05,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:05,315 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:05,315 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:04:05,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-16 11:04:05,315 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:04:05,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:05,316 INFO L85 PathProgramCache]: Analyzing trace with hash 859753864, now seen corresponding path program 25 times [2022-11-16 11:04:05,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:05,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030890135] [2022-11-16 11:04:05,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:05,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:06,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:06,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:06,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030890135] [2022-11-16 11:04:06,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030890135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:04:06,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:04:06,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 11:04:06,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652275554] [2022-11-16 11:04:06,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:04:06,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 11:04:06,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:06,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 11:04:06,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:04:06,004 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:04:06,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 270 transitions, 2436 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:06,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:06,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:04:06,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:07,811 INFO L130 PetriNetUnfolder]: 268/769 cut-off events. [2022-11-16 11:04:07,811 INFO L131 PetriNetUnfolder]: For 4419/4419 co-relation queries the response was YES. [2022-11-16 11:04:07,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4238 conditions, 769 events. 268/769 cut-off events. For 4419/4419 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3855 event pairs, 21 based on Foata normal form. 1/766 useless extension candidates. Maximal degree in co-relation 4144. Up to 505 conditions per place. [2022-11-16 11:04:07,819 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 162 selfloop transitions, 90 changer transitions 15/306 dead transitions. [2022-11-16 11:04:07,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 306 transitions, 3292 flow [2022-11-16 11:04:07,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-16 11:04:07,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-16 11:04:07,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1892 transitions. [2022-11-16 11:04:07,822 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5591016548463357 [2022-11-16 11:04:07,823 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1892 transitions. [2022-11-16 11:04:07,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1892 transitions. [2022-11-16 11:04:07,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:07,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1892 transitions. [2022-11-16 11:04:07,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.55555555555556) internal successors, (1892), 36 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:07,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:07,830 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:07,830 INFO L175 Difference]: Start difference. First operand has 319 places, 270 transitions, 2436 flow. Second operand 36 states and 1892 transitions. [2022-11-16 11:04:07,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 306 transitions, 3292 flow [2022-11-16 11:04:07,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 306 transitions, 3036 flow, removed 19 selfloop flow, removed 31 redundant places. [2022-11-16 11:04:07,874 INFO L231 Difference]: Finished difference. Result has 325 places, 275 transitions, 2513 flow [2022-11-16 11:04:07,875 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2200, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2513, PETRI_PLACES=325, PETRI_TRANSITIONS=275} [2022-11-16 11:04:07,875 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 237 predicate places. [2022-11-16 11:04:07,875 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 275 transitions, 2513 flow [2022-11-16 11:04:07,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:07,876 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:07,876 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:04:07,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-16 11:04:07,877 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:04:07,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:07,877 INFO L85 PathProgramCache]: Analyzing trace with hash 671989096, now seen corresponding path program 26 times [2022-11-16 11:04:07,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:07,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492252311] [2022-11-16 11:04:07,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:07,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:08,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:08,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:08,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492252311] [2022-11-16 11:04:08,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492252311] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:04:08,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:04:08,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-16 11:04:08,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30936996] [2022-11-16 11:04:08,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:04:08,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:04:08,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:08,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:04:08,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:04:08,561 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:04:08,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 275 transitions, 2513 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:08,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:08,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:04:08,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:10,168 INFO L130 PetriNetUnfolder]: 265/772 cut-off events. [2022-11-16 11:04:10,169 INFO L131 PetriNetUnfolder]: For 4743/4743 co-relation queries the response was YES. [2022-11-16 11:04:10,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4254 conditions, 772 events. 265/772 cut-off events. For 4743/4743 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3889 event pairs, 21 based on Foata normal form. 1/770 useless extension candidates. Maximal degree in co-relation 4158. Up to 505 conditions per place. [2022-11-16 11:04:10,175 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 161 selfloop transitions, 83 changer transitions 19/302 dead transitions. [2022-11-16 11:04:10,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 302 transitions, 3200 flow [2022-11-16 11:04:10,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 11:04:10,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-16 11:04:10,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1739 transitions. [2022-11-16 11:04:10,177 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5606060606060606 [2022-11-16 11:04:10,177 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1739 transitions. [2022-11-16 11:04:10,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1739 transitions. [2022-11-16 11:04:10,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:10,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1739 transitions. [2022-11-16 11:04:10,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 52.696969696969695) internal successors, (1739), 33 states have internal predecessors, (1739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:10,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:10,184 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:10,185 INFO L175 Difference]: Start difference. First operand has 325 places, 275 transitions, 2513 flow. Second operand 33 states and 1739 transitions. [2022-11-16 11:04:10,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 302 transitions, 3200 flow [2022-11-16 11:04:10,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 302 transitions, 2941 flow, removed 61 selfloop flow, removed 31 redundant places. [2022-11-16 11:04:10,221 INFO L231 Difference]: Finished difference. Result has 325 places, 268 transitions, 2421 flow [2022-11-16 11:04:10,221 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2282, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2421, PETRI_PLACES=325, PETRI_TRANSITIONS=268} [2022-11-16 11:04:10,222 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 237 predicate places. [2022-11-16 11:04:10,222 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 268 transitions, 2421 flow [2022-11-16 11:04:10,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:10,223 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:10,223 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:04:10,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-16 11:04:10,223 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:04:10,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:10,224 INFO L85 PathProgramCache]: Analyzing trace with hash 215089168, now seen corresponding path program 27 times [2022-11-16 11:04:10,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:10,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766689522] [2022-11-16 11:04:10,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:10,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:10,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:10,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:10,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:10,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766689522] [2022-11-16 11:04:10,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766689522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:04:10,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:04:10,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:04:10,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283292938] [2022-11-16 11:04:10,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:04:10,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:04:10,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:10,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:04:10,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:04:10,839 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:04:10,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 268 transitions, 2421 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:10,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:10,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:04:10,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:12,411 INFO L130 PetriNetUnfolder]: 269/771 cut-off events. [2022-11-16 11:04:12,411 INFO L131 PetriNetUnfolder]: For 4782/4782 co-relation queries the response was YES. [2022-11-16 11:04:12,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4328 conditions, 771 events. 269/771 cut-off events. For 4782/4782 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3881 event pairs, 21 based on Foata normal form. 1/769 useless extension candidates. Maximal degree in co-relation 4233. Up to 489 conditions per place. [2022-11-16 11:04:12,420 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 153 selfloop transitions, 98 changer transitions 25/315 dead transitions. [2022-11-16 11:04:12,420 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 315 transitions, 3372 flow [2022-11-16 11:04:12,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 11:04:12,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-16 11:04:12,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1805 transitions. [2022-11-16 11:04:12,423 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5647684605757196 [2022-11-16 11:04:12,424 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1805 transitions. [2022-11-16 11:04:12,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1805 transitions. [2022-11-16 11:04:12,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:12,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1805 transitions. [2022-11-16 11:04:12,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.088235294117645) internal successors, (1805), 34 states have internal predecessors, (1805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:12,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:12,431 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:12,432 INFO L175 Difference]: Start difference. First operand has 325 places, 268 transitions, 2421 flow. Second operand 34 states and 1805 transitions. [2022-11-16 11:04:12,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 315 transitions, 3372 flow [2022-11-16 11:04:12,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 315 transitions, 3126 flow, removed 18 selfloop flow, removed 33 redundant places. [2022-11-16 11:04:12,483 INFO L231 Difference]: Finished difference. Result has 326 places, 271 transitions, 2506 flow [2022-11-16 11:04:12,484 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2197, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2506, PETRI_PLACES=326, PETRI_TRANSITIONS=271} [2022-11-16 11:04:12,485 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 238 predicate places. [2022-11-16 11:04:12,485 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 271 transitions, 2506 flow [2022-11-16 11:04:12,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:12,485 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:12,485 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:04:12,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-16 11:04:12,486 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:04:12,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:12,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1302081822, now seen corresponding path program 28 times [2022-11-16 11:04:12,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:12,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780631930] [2022-11-16 11:04:12,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:12,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:13,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:13,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:13,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780631930] [2022-11-16 11:04:13,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780631930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:04:13,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:04:13,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:04:13,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075013185] [2022-11-16 11:04:13,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:04:13,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:04:13,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:13,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:04:13,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:04:13,085 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:04:13,086 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 271 transitions, 2506 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:13,086 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:13,086 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:04:13,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:14,487 INFO L130 PetriNetUnfolder]: 264/759 cut-off events. [2022-11-16 11:04:14,487 INFO L131 PetriNetUnfolder]: For 4909/4909 co-relation queries the response was YES. [2022-11-16 11:04:14,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4314 conditions, 759 events. 264/759 cut-off events. For 4909/4909 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3793 event pairs, 18 based on Foata normal form. 1/757 useless extension candidates. Maximal degree in co-relation 4216. Up to 465 conditions per place. [2022-11-16 11:04:14,492 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 147 selfloop transitions, 113 changer transitions 18/317 dead transitions. [2022-11-16 11:04:14,493 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 317 transitions, 3488 flow [2022-11-16 11:04:14,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-16 11:04:14,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-16 11:04:14,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1554 transitions. [2022-11-16 11:04:14,495 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.57006603081438 [2022-11-16 11:04:14,495 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1554 transitions. [2022-11-16 11:04:14,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1554 transitions. [2022-11-16 11:04:14,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:14,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1554 transitions. [2022-11-16 11:04:14,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 53.58620689655172) internal successors, (1554), 29 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:14,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:14,498 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:14,499 INFO L175 Difference]: Start difference. First operand has 326 places, 271 transitions, 2506 flow. Second operand 29 states and 1554 transitions. [2022-11-16 11:04:14,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 317 transitions, 3488 flow [2022-11-16 11:04:14,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 317 transitions, 3214 flow, removed 38 selfloop flow, removed 27 redundant places. [2022-11-16 11:04:14,530 INFO L231 Difference]: Finished difference. Result has 325 places, 277 transitions, 2617 flow [2022-11-16 11:04:14,531 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2250, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2617, PETRI_PLACES=325, PETRI_TRANSITIONS=277} [2022-11-16 11:04:14,531 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 237 predicate places. [2022-11-16 11:04:14,531 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 277 transitions, 2617 flow [2022-11-16 11:04:14,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:14,532 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:14,532 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:04:14,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-16 11:04:14,532 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:04:14,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:14,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1890809614, now seen corresponding path program 29 times [2022-11-16 11:04:14,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:14,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069338563] [2022-11-16 11:04:14,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:14,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:14,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:15,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:15,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:15,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069338563] [2022-11-16 11:04:15,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069338563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:04:15,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:04:15,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 11:04:15,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435789685] [2022-11-16 11:04:15,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:04:15,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 11:04:15,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:15,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 11:04:15,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:04:15,214 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:04:15,215 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 277 transitions, 2617 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:15,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:15,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:04:15,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:16,799 INFO L130 PetriNetUnfolder]: 260/739 cut-off events. [2022-11-16 11:04:16,799 INFO L131 PetriNetUnfolder]: For 4860/4860 co-relation queries the response was YES. [2022-11-16 11:04:16,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4240 conditions, 739 events. 260/739 cut-off events. For 4860/4860 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3606 event pairs, 20 based on Foata normal form. 1/737 useless extension candidates. Maximal degree in co-relation 4141. Up to 507 conditions per place. [2022-11-16 11:04:16,805 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 168 selfloop transitions, 64 changer transitions 29/300 dead transitions. [2022-11-16 11:04:16,806 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 300 transitions, 3242 flow [2022-11-16 11:04:16,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 11:04:16,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-16 11:04:16,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1681 transitions. [2022-11-16 11:04:16,808 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.558843085106383 [2022-11-16 11:04:16,808 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1681 transitions. [2022-11-16 11:04:16,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1681 transitions. [2022-11-16 11:04:16,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:16,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1681 transitions. [2022-11-16 11:04:16,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.53125) internal successors, (1681), 32 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:16,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:16,815 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:16,815 INFO L175 Difference]: Start difference. First operand has 325 places, 277 transitions, 2617 flow. Second operand 32 states and 1681 transitions. [2022-11-16 11:04:16,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 300 transitions, 3242 flow [2022-11-16 11:04:16,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 300 transitions, 2993 flow, removed 41 selfloop flow, removed 24 redundant places. [2022-11-16 11:04:16,871 INFO L231 Difference]: Finished difference. Result has 331 places, 257 transitions, 2275 flow [2022-11-16 11:04:16,871 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2374, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2275, PETRI_PLACES=331, PETRI_TRANSITIONS=257} [2022-11-16 11:04:16,872 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 243 predicate places. [2022-11-16 11:04:16,872 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 257 transitions, 2275 flow [2022-11-16 11:04:16,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:16,873 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:16,873 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:04:16,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-16 11:04:16,873 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:04:16,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:16,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1394251328, now seen corresponding path program 30 times [2022-11-16 11:04:16,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:16,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922626592] [2022-11-16 11:04:16,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:16,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:17,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:17,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:17,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922626592] [2022-11-16 11:04:17,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922626592] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:04:17,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:04:17,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:04:17,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708935940] [2022-11-16 11:04:17,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:04:17,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:04:17,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:17,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:04:17,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:04:17,489 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:04:17,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 257 transitions, 2275 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:17,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:17,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:04:17,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:18,868 INFO L130 PetriNetUnfolder]: 263/738 cut-off events. [2022-11-16 11:04:18,868 INFO L131 PetriNetUnfolder]: For 4417/4417 co-relation queries the response was YES. [2022-11-16 11:04:18,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4096 conditions, 738 events. 263/738 cut-off events. For 4417/4417 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3598 event pairs, 18 based on Foata normal form. 1/736 useless extension candidates. Maximal degree in co-relation 3998. Up to 465 conditions per place. [2022-11-16 11:04:18,873 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 143 selfloop transitions, 99 changer transitions 18/299 dead transitions. [2022-11-16 11:04:18,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 299 transitions, 3142 flow [2022-11-16 11:04:18,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 11:04:18,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 11:04:18,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1603 transitions. [2022-11-16 11:04:18,876 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5684397163120567 [2022-11-16 11:04:18,876 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1603 transitions. [2022-11-16 11:04:18,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1603 transitions. [2022-11-16 11:04:18,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:18,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1603 transitions. [2022-11-16 11:04:18,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.43333333333333) internal successors, (1603), 30 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:18,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:18,882 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:18,882 INFO L175 Difference]: Start difference. First operand has 331 places, 257 transitions, 2275 flow. Second operand 30 states and 1603 transitions. [2022-11-16 11:04:18,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 299 transitions, 3142 flow [2022-11-16 11:04:18,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 299 transitions, 2849 flow, removed 37 selfloop flow, removed 37 redundant places. [2022-11-16 11:04:18,918 INFO L231 Difference]: Finished difference. Result has 302 places, 259 transitions, 2286 flow [2022-11-16 11:04:18,918 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2016, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2286, PETRI_PLACES=302, PETRI_TRANSITIONS=259} [2022-11-16 11:04:18,919 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 214 predicate places. [2022-11-16 11:04:18,919 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 259 transitions, 2286 flow [2022-11-16 11:04:18,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:18,919 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:18,920 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:04:18,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-16 11:04:18,920 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:04:18,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:18,920 INFO L85 PathProgramCache]: Analyzing trace with hash -920258534, now seen corresponding path program 31 times [2022-11-16 11:04:18,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:18,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014920827] [2022-11-16 11:04:18,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:18,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:18,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:19,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:19,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:19,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014920827] [2022-11-16 11:04:19,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014920827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:04:19,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:04:19,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:04:19,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018091552] [2022-11-16 11:04:19,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:04:19,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:04:19,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:19,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:04:19,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:04:19,521 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:04:19,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 259 transitions, 2286 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:19,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:19,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:04:19,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:21,049 INFO L130 PetriNetUnfolder]: 262/725 cut-off events. [2022-11-16 11:04:21,049 INFO L131 PetriNetUnfolder]: For 4459/4459 co-relation queries the response was YES. [2022-11-16 11:04:21,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4034 conditions, 725 events. 262/725 cut-off events. For 4459/4459 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3496 event pairs, 18 based on Foata normal form. 1/723 useless extension candidates. Maximal degree in co-relation 3943. Up to 474 conditions per place. [2022-11-16 11:04:21,057 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 148 selfloop transitions, 89 changer transitions 21/297 dead transitions. [2022-11-16 11:04:21,057 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 297 transitions, 3113 flow [2022-11-16 11:04:21,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 11:04:21,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-16 11:04:21,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1698 transitions. [2022-11-16 11:04:21,060 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5644946808510638 [2022-11-16 11:04:21,060 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1698 transitions. [2022-11-16 11:04:21,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1698 transitions. [2022-11-16 11:04:21,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:21,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1698 transitions. [2022-11-16 11:04:21,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.0625) internal successors, (1698), 32 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:21,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:21,064 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:21,065 INFO L175 Difference]: Start difference. First operand has 302 places, 259 transitions, 2286 flow. Second operand 32 states and 1698 transitions. [2022-11-16 11:04:21,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 297 transitions, 3113 flow [2022-11-16 11:04:21,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 297 transitions, 2896 flow, removed 30 selfloop flow, removed 28 redundant places. [2022-11-16 11:04:21,093 INFO L231 Difference]: Finished difference. Result has 307 places, 257 transitions, 2300 flow [2022-11-16 11:04:21,093 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2087, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2300, PETRI_PLACES=307, PETRI_TRANSITIONS=257} [2022-11-16 11:04:21,094 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 219 predicate places. [2022-11-16 11:04:21,094 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 257 transitions, 2300 flow [2022-11-16 11:04:21,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:21,094 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:21,094 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:04:21,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-16 11:04:21,095 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:04:21,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:21,095 INFO L85 PathProgramCache]: Analyzing trace with hash -394051736, now seen corresponding path program 32 times [2022-11-16 11:04:21,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:21,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082532383] [2022-11-16 11:04:21,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:21,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:21,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:21,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:21,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:21,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082532383] [2022-11-16 11:04:21,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082532383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:04:21,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:04:21,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:04:21,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480021136] [2022-11-16 11:04:21,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:04:21,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:04:21,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:21,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:04:21,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:04:21,698 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:04:21,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 257 transitions, 2300 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:21,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:21,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:04:21,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:23,038 INFO L130 PetriNetUnfolder]: 256/721 cut-off events. [2022-11-16 11:04:23,038 INFO L131 PetriNetUnfolder]: For 4586/4586 co-relation queries the response was YES. [2022-11-16 11:04:23,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4019 conditions, 721 events. 256/721 cut-off events. For 4586/4586 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3459 event pairs, 17 based on Foata normal form. 1/719 useless extension candidates. Maximal degree in co-relation 3929. Up to 456 conditions per place. [2022-11-16 11:04:23,044 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 143 selfloop transitions, 100 changer transitions 14/296 dead transitions. [2022-11-16 11:04:23,044 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 296 transitions, 3138 flow [2022-11-16 11:04:23,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 11:04:23,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-16 11:04:23,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1701 transitions. [2022-11-16 11:04:23,047 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5654920212765957 [2022-11-16 11:04:23,047 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1701 transitions. [2022-11-16 11:04:23,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1701 transitions. [2022-11-16 11:04:23,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:23,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1701 transitions. [2022-11-16 11:04:23,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.15625) internal successors, (1701), 32 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:23,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:23,052 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:23,052 INFO L175 Difference]: Start difference. First operand has 307 places, 257 transitions, 2300 flow. Second operand 32 states and 1701 transitions. [2022-11-16 11:04:23,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 296 transitions, 3138 flow [2022-11-16 11:04:23,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 296 transitions, 2882 flow, removed 40 selfloop flow, removed 30 redundant places. [2022-11-16 11:04:23,094 INFO L231 Difference]: Finished difference. Result has 307 places, 260 transitions, 2367 flow [2022-11-16 11:04:23,095 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2078, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2367, PETRI_PLACES=307, PETRI_TRANSITIONS=260} [2022-11-16 11:04:23,095 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 219 predicate places. [2022-11-16 11:04:23,095 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 260 transitions, 2367 flow [2022-11-16 11:04:23,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:23,096 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:23,096 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:04:23,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-16 11:04:23,096 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:04:23,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:23,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1670592494, now seen corresponding path program 33 times [2022-11-16 11:04:23,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:23,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783718943] [2022-11-16 11:04:23,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:23,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:23,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:23,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:23,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:23,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783718943] [2022-11-16 11:04:23,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783718943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:04:23,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:04:23,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:04:23,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126105017] [2022-11-16 11:04:23,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:04:23,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:04:23,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:23,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:04:23,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:04:23,710 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:04:23,711 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 260 transitions, 2367 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:23,711 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:23,711 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:04:23,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:25,186 INFO L130 PetriNetUnfolder]: 255/716 cut-off events. [2022-11-16 11:04:25,186 INFO L131 PetriNetUnfolder]: For 4077/4077 co-relation queries the response was YES. [2022-11-16 11:04:25,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3978 conditions, 716 events. 255/716 cut-off events. For 4077/4077 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3440 event pairs, 19 based on Foata normal form. 1/713 useless extension candidates. Maximal degree in co-relation 3888. Up to 449 conditions per place. [2022-11-16 11:04:25,191 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 139 selfloop transitions, 92 changer transitions 25/295 dead transitions. [2022-11-16 11:04:25,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 295 transitions, 3134 flow [2022-11-16 11:04:25,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 11:04:25,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-16 11:04:25,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1749 transitions. [2022-11-16 11:04:25,197 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2022-11-16 11:04:25,197 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1749 transitions. [2022-11-16 11:04:25,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1749 transitions. [2022-11-16 11:04:25,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:25,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1749 transitions. [2022-11-16 11:04:25,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.0) internal successors, (1749), 33 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:25,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:25,230 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:25,230 INFO L175 Difference]: Start difference. First operand has 307 places, 260 transitions, 2367 flow. Second operand 33 states and 1749 transitions. [2022-11-16 11:04:25,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 295 transitions, 3134 flow [2022-11-16 11:04:25,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 295 transitions, 2900 flow, removed 32 selfloop flow, removed 27 redundant places. [2022-11-16 11:04:25,277 INFO L231 Difference]: Finished difference. Result has 315 places, 249 transitions, 2284 flow [2022-11-16 11:04:25,278 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2148, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2284, PETRI_PLACES=315, PETRI_TRANSITIONS=249} [2022-11-16 11:04:25,278 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 227 predicate places. [2022-11-16 11:04:25,278 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 249 transitions, 2284 flow [2022-11-16 11:04:25,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:25,279 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:25,279 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:04:25,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-16 11:04:25,279 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:04:25,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:25,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1177861492, now seen corresponding path program 34 times [2022-11-16 11:04:25,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:25,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905481744] [2022-11-16 11:04:25,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:25,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:25,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:25,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:25,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:25,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905481744] [2022-11-16 11:04:25,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905481744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:04:25,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:04:25,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:04:25,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779628568] [2022-11-16 11:04:25,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:04:25,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:04:25,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:25,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:04:25,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:04:25,889 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:04:25,890 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 249 transitions, 2284 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:25,890 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:25,890 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:04:25,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:27,338 INFO L130 PetriNetUnfolder]: 250/699 cut-off events. [2022-11-16 11:04:27,338 INFO L131 PetriNetUnfolder]: For 4452/4452 co-relation queries the response was YES. [2022-11-16 11:04:27,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3991 conditions, 699 events. 250/699 cut-off events. For 4452/4452 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3317 event pairs, 17 based on Foata normal form. 1/697 useless extension candidates. Maximal degree in co-relation 3897. Up to 468 conditions per place. [2022-11-16 11:04:27,347 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 147 selfloop transitions, 83 changer transitions 16/285 dead transitions. [2022-11-16 11:04:27,347 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 285 transitions, 3064 flow [2022-11-16 11:04:27,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 11:04:27,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-16 11:04:27,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1792 transitions. [2022-11-16 11:04:27,351 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5607008760951189 [2022-11-16 11:04:27,351 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1792 transitions. [2022-11-16 11:04:27,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1792 transitions. [2022-11-16 11:04:27,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:27,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1792 transitions. [2022-11-16 11:04:27,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.705882352941174) internal successors, (1792), 34 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:27,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:27,359 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:27,359 INFO L175 Difference]: Start difference. First operand has 315 places, 249 transitions, 2284 flow. Second operand 34 states and 1792 transitions. [2022-11-16 11:04:27,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 285 transitions, 3064 flow [2022-11-16 11:04:27,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 285 transitions, 2770 flow, removed 32 selfloop flow, removed 37 redundant places. [2022-11-16 11:04:27,399 INFO L231 Difference]: Finished difference. Result has 307 places, 251 transitions, 2245 flow [2022-11-16 11:04:27,400 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2025, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2245, PETRI_PLACES=307, PETRI_TRANSITIONS=251} [2022-11-16 11:04:27,400 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 219 predicate places. [2022-11-16 11:04:27,400 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 251 transitions, 2245 flow [2022-11-16 11:04:27,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:27,400 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:27,400 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:04:27,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-16 11:04:27,400 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:04:27,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:27,401 INFO L85 PathProgramCache]: Analyzing trace with hash 103252404, now seen corresponding path program 35 times [2022-11-16 11:04:27,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:27,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846720661] [2022-11-16 11:04:27,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:27,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:27,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:27,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:27,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846720661] [2022-11-16 11:04:27,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846720661] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:04:27,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:04:27,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:04:27,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606557211] [2022-11-16 11:04:27,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:04:27,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:04:27,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:27,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:04:27,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:04:27,976 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:04:27,977 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 251 transitions, 2245 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:27,977 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:27,977 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:04:27,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:29,287 INFO L130 PetriNetUnfolder]: 245/684 cut-off events. [2022-11-16 11:04:29,287 INFO L131 PetriNetUnfolder]: For 4086/4086 co-relation queries the response was YES. [2022-11-16 11:04:29,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3855 conditions, 684 events. 245/684 cut-off events. For 4086/4086 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3222 event pairs, 19 based on Foata normal form. 1/681 useless extension candidates. Maximal degree in co-relation 3763. Up to 464 conditions per place. [2022-11-16 11:04:29,293 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 146 selfloop transitions, 70 changer transitions 21/276 dead transitions. [2022-11-16 11:04:29,293 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 276 transitions, 2864 flow [2022-11-16 11:04:29,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 11:04:29,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-16 11:04:29,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1636 transitions. [2022-11-16 11:04:29,295 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5614275909402883 [2022-11-16 11:04:29,295 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1636 transitions. [2022-11-16 11:04:29,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1636 transitions. [2022-11-16 11:04:29,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:29,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1636 transitions. [2022-11-16 11:04:29,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 52.774193548387096) internal successors, (1636), 31 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:29,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:29,300 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:29,301 INFO L175 Difference]: Start difference. First operand has 307 places, 251 transitions, 2245 flow. Second operand 31 states and 1636 transitions. [2022-11-16 11:04:29,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 276 transitions, 2864 flow [2022-11-16 11:04:29,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 276 transitions, 2669 flow, removed 30 selfloop flow, removed 28 redundant places. [2022-11-16 11:04:29,327 INFO L231 Difference]: Finished difference. Result has 307 places, 238 transitions, 2077 flow [2022-11-16 11:04:29,328 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2056, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2077, PETRI_PLACES=307, PETRI_TRANSITIONS=238} [2022-11-16 11:04:29,328 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 219 predicate places. [2022-11-16 11:04:29,328 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 238 transitions, 2077 flow [2022-11-16 11:04:29,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:29,328 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:29,328 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:04:29,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-16 11:04:29,329 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:04:29,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:29,329 INFO L85 PathProgramCache]: Analyzing trace with hash -710610230, now seen corresponding path program 36 times [2022-11-16 11:04:29,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:29,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580252964] [2022-11-16 11:04:29,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:29,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:29,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:29,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:29,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:29,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580252964] [2022-11-16 11:04:29,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580252964] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:04:29,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:04:29,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:04:29,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495369516] [2022-11-16 11:04:29,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:04:29,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:04:29,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:29,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:04:29,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:04:29,911 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:04:29,911 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 238 transitions, 2077 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:29,911 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:29,911 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:04:29,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:31,227 INFO L130 PetriNetUnfolder]: 241/670 cut-off events. [2022-11-16 11:04:31,227 INFO L131 PetriNetUnfolder]: For 3996/3996 co-relation queries the response was YES. [2022-11-16 11:04:31,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3764 conditions, 670 events. 241/670 cut-off events. For 3996/3996 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3119 event pairs, 18 based on Foata normal form. 1/668 useless extension candidates. Maximal degree in co-relation 3671. Up to 438 conditions per place. [2022-11-16 11:04:31,233 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 128 selfloop transitions, 79 changer transitions 22/268 dead transitions. [2022-11-16 11:04:31,233 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 268 transitions, 2710 flow [2022-11-16 11:04:31,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 11:04:31,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 11:04:31,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1593 transitions. [2022-11-16 11:04:31,236 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5648936170212766 [2022-11-16 11:04:31,236 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1593 transitions. [2022-11-16 11:04:31,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1593 transitions. [2022-11-16 11:04:31,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:31,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1593 transitions. [2022-11-16 11:04:31,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.1) internal successors, (1593), 30 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:31,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:31,241 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:31,241 INFO L175 Difference]: Start difference. First operand has 307 places, 238 transitions, 2077 flow. Second operand 30 states and 1593 transitions. [2022-11-16 11:04:31,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 268 transitions, 2710 flow [2022-11-16 11:04:31,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 268 transitions, 2435 flow, removed 21 selfloop flow, removed 36 redundant places. [2022-11-16 11:04:31,280 INFO L231 Difference]: Finished difference. Result has 285 places, 228 transitions, 1909 flow [2022-11-16 11:04:31,281 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1808, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1909, PETRI_PLACES=285, PETRI_TRANSITIONS=228} [2022-11-16 11:04:31,281 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 197 predicate places. [2022-11-16 11:04:31,281 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 228 transitions, 1909 flow [2022-11-16 11:04:31,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:31,282 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:31,282 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:04:31,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-16 11:04:31,282 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:04:31,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:31,283 INFO L85 PathProgramCache]: Analyzing trace with hash -921725570, now seen corresponding path program 37 times [2022-11-16 11:04:31,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:31,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798908346] [2022-11-16 11:04:31,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:31,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:31,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:31,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:31,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:31,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798908346] [2022-11-16 11:04:31,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798908346] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:04:31,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:04:31,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:04:31,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631081537] [2022-11-16 11:04:31,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:04:31,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:04:31,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:31,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:04:31,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:04:31,863 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:04:31,864 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 228 transitions, 1909 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:31,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:31,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:04:31,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:33,234 INFO L130 PetriNetUnfolder]: 234/643 cut-off events. [2022-11-16 11:04:33,235 INFO L131 PetriNetUnfolder]: For 3490/3490 co-relation queries the response was YES. [2022-11-16 11:04:33,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3525 conditions, 643 events. 234/643 cut-off events. For 3490/3490 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2926 event pairs, 15 based on Foata normal form. 1/641 useless extension candidates. Maximal degree in co-relation 3442. Up to 434 conditions per place. [2022-11-16 11:04:33,241 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 125 selfloop transitions, 69 changer transitions 22/255 dead transitions. [2022-11-16 11:04:33,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 255 transitions, 2486 flow [2022-11-16 11:04:33,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 11:04:33,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 11:04:33,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1586 transitions. [2022-11-16 11:04:33,244 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5624113475177305 [2022-11-16 11:04:33,244 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1586 transitions. [2022-11-16 11:04:33,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1586 transitions. [2022-11-16 11:04:33,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:33,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1586 transitions. [2022-11-16 11:04:33,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 52.86666666666667) internal successors, (1586), 30 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:33,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:33,250 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:33,250 INFO L175 Difference]: Start difference. First operand has 285 places, 228 transitions, 1909 flow. Second operand 30 states and 1586 transitions. [2022-11-16 11:04:33,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 255 transitions, 2486 flow [2022-11-16 11:04:33,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 255 transitions, 2231 flow, removed 12 selfloop flow, removed 34 redundant places. [2022-11-16 11:04:33,278 INFO L231 Difference]: Finished difference. Result has 273 places, 218 transitions, 1739 flow [2022-11-16 11:04:33,278 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1662, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1739, PETRI_PLACES=273, PETRI_TRANSITIONS=218} [2022-11-16 11:04:33,279 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 185 predicate places. [2022-11-16 11:04:33,279 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 218 transitions, 1739 flow [2022-11-16 11:04:33,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:33,280 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:33,280 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:04:33,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-16 11:04:33,280 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:04:33,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:33,287 INFO L85 PathProgramCache]: Analyzing trace with hash 199721444, now seen corresponding path program 38 times [2022-11-16 11:04:33,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:33,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130978331] [2022-11-16 11:04:33,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:33,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:33,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:33,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:33,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:33,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130978331] [2022-11-16 11:04:33,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130978331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:04:33,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:04:33,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-16 11:04:33,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834086331] [2022-11-16 11:04:33,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:04:33,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:04:33,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:33,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:04:33,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:04:33,913 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:04:33,914 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 218 transitions, 1739 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:33,914 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:33,914 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:04:33,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:35,404 INFO L130 PetriNetUnfolder]: 230/626 cut-off events. [2022-11-16 11:04:35,405 INFO L131 PetriNetUnfolder]: For 3083/3083 co-relation queries the response was YES. [2022-11-16 11:04:35,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3331 conditions, 626 events. 230/626 cut-off events. For 3083/3083 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2802 event pairs, 15 based on Foata normal form. 1/624 useless extension candidates. Maximal degree in co-relation 3253. Up to 426 conditions per place. [2022-11-16 11:04:35,410 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 118 selfloop transitions, 72 changer transitions 15/244 dead transitions. [2022-11-16 11:04:35,410 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 244 transitions, 2311 flow [2022-11-16 11:04:35,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 11:04:35,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-16 11:04:35,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1682 transitions. [2022-11-16 11:04:35,413 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5591755319148937 [2022-11-16 11:04:35,414 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1682 transitions. [2022-11-16 11:04:35,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1682 transitions. [2022-11-16 11:04:35,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:35,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1682 transitions. [2022-11-16 11:04:35,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.5625) internal successors, (1682), 32 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:35,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:35,420 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:35,420 INFO L175 Difference]: Start difference. First operand has 273 places, 218 transitions, 1739 flow. Second operand 32 states and 1682 transitions. [2022-11-16 11:04:35,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 244 transitions, 2311 flow [2022-11-16 11:04:35,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 244 transitions, 2076 flow, removed 15 selfloop flow, removed 33 redundant places. [2022-11-16 11:04:35,440 INFO L231 Difference]: Finished difference. Result has 261 places, 213 transitions, 1649 flow [2022-11-16 11:04:35,441 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1649, PETRI_PLACES=261, PETRI_TRANSITIONS=213} [2022-11-16 11:04:35,441 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 173 predicate places. [2022-11-16 11:04:35,441 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 213 transitions, 1649 flow [2022-11-16 11:04:35,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:35,441 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:35,441 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:04:35,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-16 11:04:35,442 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:04:35,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:35,442 INFO L85 PathProgramCache]: Analyzing trace with hash -358046080, now seen corresponding path program 39 times [2022-11-16 11:04:35,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:35,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087241510] [2022-11-16 11:04:35,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:35,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:35,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:35,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:35,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:35,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087241510] [2022-11-16 11:04:35,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087241510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:04:35,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:04:35,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-16 11:04:35,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864097128] [2022-11-16 11:04:35,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:04:35,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:04:35,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:35,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:04:35,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:04:36,000 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:04:36,001 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 213 transitions, 1649 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:36,001 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:36,001 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:04:36,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:37,317 INFO L130 PetriNetUnfolder]: 226/611 cut-off events. [2022-11-16 11:04:37,317 INFO L131 PetriNetUnfolder]: For 2965/2965 co-relation queries the response was YES. [2022-11-16 11:04:37,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3208 conditions, 611 events. 226/611 cut-off events. For 2965/2965 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2722 event pairs, 18 based on Foata normal form. 1/610 useless extension candidates. Maximal degree in co-relation 3133. Up to 424 conditions per place. [2022-11-16 11:04:37,321 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 112 selfloop transitions, 55 changer transitions 31/237 dead transitions. [2022-11-16 11:04:37,321 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 237 transitions, 2158 flow [2022-11-16 11:04:37,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 11:04:37,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 11:04:37,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1577 transitions. [2022-11-16 11:04:37,323 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5592198581560284 [2022-11-16 11:04:37,323 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1577 transitions. [2022-11-16 11:04:37,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1577 transitions. [2022-11-16 11:04:37,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:37,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1577 transitions. [2022-11-16 11:04:37,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 52.56666666666667) internal successors, (1577), 30 states have internal predecessors, (1577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:37,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:37,327 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:37,327 INFO L175 Difference]: Start difference. First operand has 261 places, 213 transitions, 1649 flow. Second operand 30 states and 1577 transitions. [2022-11-16 11:04:37,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 237 transitions, 2158 flow [2022-11-16 11:04:37,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 237 transitions, 1957 flow, removed 10 selfloop flow, removed 31 redundant places. [2022-11-16 11:04:37,354 INFO L231 Difference]: Finished difference. Result has 255 places, 196 transitions, 1474 flow [2022-11-16 11:04:37,354 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1454, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1474, PETRI_PLACES=255, PETRI_TRANSITIONS=196} [2022-11-16 11:04:37,355 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 167 predicate places. [2022-11-16 11:04:37,355 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 196 transitions, 1474 flow [2022-11-16 11:04:37,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:37,355 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:37,356 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:04:37,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-16 11:04:37,356 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:04:37,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:37,356 INFO L85 PathProgramCache]: Analyzing trace with hash 2011754598, now seen corresponding path program 40 times [2022-11-16 11:04:37,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:37,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332895497] [2022-11-16 11:04:37,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:37,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:37,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:37,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:37,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:37,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332895497] [2022-11-16 11:04:37,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332895497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:04:37,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:04:37,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:04:37,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248589500] [2022-11-16 11:04:37,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:04:37,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:04:37,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:37,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:04:37,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:04:37,936 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:04:37,937 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 196 transitions, 1474 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:37,937 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:37,937 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:04:37,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:39,605 INFO L130 PetriNetUnfolder]: 260/728 cut-off events. [2022-11-16 11:04:39,605 INFO L131 PetriNetUnfolder]: For 3522/3522 co-relation queries the response was YES. [2022-11-16 11:04:39,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3673 conditions, 728 events. 260/728 cut-off events. For 3522/3522 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3596 event pairs, 53 based on Foata normal form. 1/727 useless extension candidates. Maximal degree in co-relation 3600. Up to 435 conditions per place. [2022-11-16 11:04:39,610 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 115 selfloop transitions, 81 changer transitions 45/280 dead transitions. [2022-11-16 11:04:39,610 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 280 transitions, 2767 flow [2022-11-16 11:04:39,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-16 11:04:39,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-16 11:04:39,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1965 transitions. [2022-11-16 11:04:39,613 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5649798734905118 [2022-11-16 11:04:39,613 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1965 transitions. [2022-11-16 11:04:39,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1965 transitions. [2022-11-16 11:04:39,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:39,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1965 transitions. [2022-11-16 11:04:39,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 53.108108108108105) internal successors, (1965), 37 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:39,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:39,619 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:39,620 INFO L175 Difference]: Start difference. First operand has 255 places, 196 transitions, 1474 flow. Second operand 37 states and 1965 transitions. [2022-11-16 11:04:39,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 280 transitions, 2767 flow [2022-11-16 11:04:39,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 280 transitions, 2503 flow, removed 25 selfloop flow, removed 28 redundant places. [2022-11-16 11:04:39,648 INFO L231 Difference]: Finished difference. Result has 257 places, 221 transitions, 1845 flow [2022-11-16 11:04:39,649 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1259, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=1845, PETRI_PLACES=257, PETRI_TRANSITIONS=221} [2022-11-16 11:04:39,649 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 169 predicate places. [2022-11-16 11:04:39,649 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 221 transitions, 1845 flow [2022-11-16 11:04:39,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:39,650 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:39,650 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:04:39,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-16 11:04:39,650 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:04:39,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:39,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1432156986, now seen corresponding path program 41 times [2022-11-16 11:04:39,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:39,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972778443] [2022-11-16 11:04:39,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:39,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:39,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:40,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:40,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:40,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972778443] [2022-11-16 11:04:40,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972778443] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:04:40,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:04:40,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:04:40,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955889510] [2022-11-16 11:04:40,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:04:40,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:04:40,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:40,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:04:40,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:04:40,165 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:04:40,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 221 transitions, 1845 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:40,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:40,166 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:04:40,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:41,754 INFO L130 PetriNetUnfolder]: 280/764 cut-off events. [2022-11-16 11:04:41,754 INFO L131 PetriNetUnfolder]: For 5492/5492 co-relation queries the response was YES. [2022-11-16 11:04:41,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4223 conditions, 764 events. 280/764 cut-off events. For 5492/5492 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3686 event pairs, 39 based on Foata normal form. 1/763 useless extension candidates. Maximal degree in co-relation 4140. Up to 482 conditions per place. [2022-11-16 11:04:41,765 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 146 selfloop transitions, 97 changer transitions 22/304 dead transitions. [2022-11-16 11:04:41,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 304 transitions, 3346 flow [2022-11-16 11:04:41,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-16 11:04:41,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-16 11:04:41,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2071 transitions. [2022-11-16 11:04:41,768 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5649208947081288 [2022-11-16 11:04:41,768 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2071 transitions. [2022-11-16 11:04:41,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2071 transitions. [2022-11-16 11:04:41,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:41,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2071 transitions. [2022-11-16 11:04:41,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 53.1025641025641) internal successors, (2071), 39 states have internal predecessors, (2071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:41,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:41,772 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:41,772 INFO L175 Difference]: Start difference. First operand has 257 places, 221 transitions, 1845 flow. Second operand 39 states and 2071 transitions. [2022-11-16 11:04:41,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 304 transitions, 3346 flow [2022-11-16 11:04:41,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 304 transitions, 2978 flow, removed 148 selfloop flow, removed 21 redundant places. [2022-11-16 11:04:41,811 INFO L231 Difference]: Finished difference. Result has 277 places, 258 transitions, 2347 flow [2022-11-16 11:04:41,812 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1557, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=2347, PETRI_PLACES=277, PETRI_TRANSITIONS=258} [2022-11-16 11:04:41,812 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 189 predicate places. [2022-11-16 11:04:41,812 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 258 transitions, 2347 flow [2022-11-16 11:04:41,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:41,813 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:41,813 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:04:41,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-16 11:04:41,813 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:04:41,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:41,814 INFO L85 PathProgramCache]: Analyzing trace with hash -170058180, now seen corresponding path program 42 times [2022-11-16 11:04:41,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:41,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562643977] [2022-11-16 11:04:41,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:41,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:42,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:42,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:42,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562643977] [2022-11-16 11:04:42,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562643977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:04:42,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:04:42,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:04:42,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932148297] [2022-11-16 11:04:42,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:04:42,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:04:42,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:42,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:04:42,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:04:42,329 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:04:42,329 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 258 transitions, 2347 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:42,329 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:42,329 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:04:42,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:43,786 INFO L130 PetriNetUnfolder]: 296/817 cut-off events. [2022-11-16 11:04:43,786 INFO L131 PetriNetUnfolder]: For 7313/7313 co-relation queries the response was YES. [2022-11-16 11:04:43,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4772 conditions, 817 events. 296/817 cut-off events. For 7313/7313 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 4149 event pairs, 56 based on Foata normal form. 1/816 useless extension candidates. Maximal degree in co-relation 4687. Up to 527 conditions per place. [2022-11-16 11:04:43,794 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 166 selfloop transitions, 79 changer transitions 36/320 dead transitions. [2022-11-16 11:04:43,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 320 transitions, 3625 flow [2022-11-16 11:04:43,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 11:04:43,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-16 11:04:43,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1813 transitions. [2022-11-16 11:04:43,796 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5672715894868585 [2022-11-16 11:04:43,797 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1813 transitions. [2022-11-16 11:04:43,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1813 transitions. [2022-11-16 11:04:43,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:43,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1813 transitions. [2022-11-16 11:04:43,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.3235294117647) internal successors, (1813), 34 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:43,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:43,802 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:43,802 INFO L175 Difference]: Start difference. First operand has 277 places, 258 transitions, 2347 flow. Second operand 34 states and 1813 transitions. [2022-11-16 11:04:43,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 320 transitions, 3625 flow [2022-11-16 11:04:43,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 320 transitions, 3143 flow, removed 204 selfloop flow, removed 17 redundant places. [2022-11-16 11:04:43,842 INFO L231 Difference]: Finished difference. Result has 301 places, 268 transitions, 2299 flow [2022-11-16 11:04:43,842 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1901, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2299, PETRI_PLACES=301, PETRI_TRANSITIONS=268} [2022-11-16 11:04:43,842 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 213 predicate places. [2022-11-16 11:04:43,842 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 268 transitions, 2299 flow [2022-11-16 11:04:43,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:43,843 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:43,843 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:04:43,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-16 11:04:43,843 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:04:43,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:43,844 INFO L85 PathProgramCache]: Analyzing trace with hash -273998376, now seen corresponding path program 43 times [2022-11-16 11:04:43,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:43,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609826024] [2022-11-16 11:04:43,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:43,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:43,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:44,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:44,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:44,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609826024] [2022-11-16 11:04:44,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609826024] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:04:44,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:04:44,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:04:44,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688297939] [2022-11-16 11:04:44,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:04:44,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:04:44,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:44,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:04:44,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:04:44,431 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:04:44,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 268 transitions, 2299 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:44,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:44,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:04:44,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:46,010 INFO L130 PetriNetUnfolder]: 300/837 cut-off events. [2022-11-16 11:04:46,010 INFO L131 PetriNetUnfolder]: For 8423/8423 co-relation queries the response was YES. [2022-11-16 11:04:46,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4992 conditions, 837 events. 300/837 cut-off events. For 8423/8423 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 4292 event pairs, 53 based on Foata normal form. 1/836 useless extension candidates. Maximal degree in co-relation 4895. Up to 536 conditions per place. [2022-11-16 11:04:46,017 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 161 selfloop transitions, 87 changer transitions 37/324 dead transitions. [2022-11-16 11:04:46,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 324 transitions, 3502 flow [2022-11-16 11:04:46,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 11:04:46,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-16 11:04:46,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1811 transitions. [2022-11-16 11:04:46,019 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5666458072590739 [2022-11-16 11:04:46,019 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1811 transitions. [2022-11-16 11:04:46,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1811 transitions. [2022-11-16 11:04:46,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:46,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1811 transitions. [2022-11-16 11:04:46,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.26470588235294) internal successors, (1811), 34 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:46,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:46,024 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:46,024 INFO L175 Difference]: Start difference. First operand has 301 places, 268 transitions, 2299 flow. Second operand 34 states and 1811 transitions. [2022-11-16 11:04:46,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 324 transitions, 3502 flow [2022-11-16 11:04:46,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 324 transitions, 3163 flow, removed 117 selfloop flow, removed 27 redundant places. [2022-11-16 11:04:46,058 INFO L231 Difference]: Finished difference. Result has 310 places, 275 transitions, 2407 flow [2022-11-16 11:04:46,058 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2057, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2407, PETRI_PLACES=310, PETRI_TRANSITIONS=275} [2022-11-16 11:04:46,059 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 222 predicate places. [2022-11-16 11:04:46,059 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 275 transitions, 2407 flow [2022-11-16 11:04:46,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:46,059 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:46,059 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:04:46,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-16 11:04:46,060 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:04:46,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:46,060 INFO L85 PathProgramCache]: Analyzing trace with hash -327641696, now seen corresponding path program 44 times [2022-11-16 11:04:46,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:46,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334277957] [2022-11-16 11:04:46,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:46,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:46,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:46,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:46,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:46,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334277957] [2022-11-16 11:04:46,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334277957] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:04:46,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:04:46,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:04:46,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83488549] [2022-11-16 11:04:46,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:04:46,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:04:46,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:46,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:04:46,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:04:46,607 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:04:46,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 275 transitions, 2407 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:46,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:46,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:04:46,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:48,081 INFO L130 PetriNetUnfolder]: 307/857 cut-off events. [2022-11-16 11:04:48,082 INFO L131 PetriNetUnfolder]: For 9064/9064 co-relation queries the response was YES. [2022-11-16 11:04:48,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5240 conditions, 857 events. 307/857 cut-off events. For 9064/9064 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4448 event pairs, 56 based on Foata normal form. 1/856 useless extension candidates. Maximal degree in co-relation 5139. Up to 536 conditions per place. [2022-11-16 11:04:48,089 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 170 selfloop transitions, 95 changer transitions 40/344 dead transitions. [2022-11-16 11:04:48,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 344 transitions, 3809 flow [2022-11-16 11:04:48,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 11:04:48,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-16 11:04:48,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1659 transitions. [2022-11-16 11:04:48,093 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5693205216197667 [2022-11-16 11:04:48,093 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1659 transitions. [2022-11-16 11:04:48,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1659 transitions. [2022-11-16 11:04:48,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:48,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1659 transitions. [2022-11-16 11:04:48,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.516129032258064) internal successors, (1659), 31 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:48,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:48,098 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:48,098 INFO L175 Difference]: Start difference. First operand has 310 places, 275 transitions, 2407 flow. Second operand 31 states and 1659 transitions. [2022-11-16 11:04:48,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 344 transitions, 3809 flow [2022-11-16 11:04:48,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 344 transitions, 3497 flow, removed 101 selfloop flow, removed 29 redundant places. [2022-11-16 11:04:48,140 INFO L231 Difference]: Finished difference. Result has 316 places, 287 transitions, 2695 flow [2022-11-16 11:04:48,140 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2219, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2695, PETRI_PLACES=316, PETRI_TRANSITIONS=287} [2022-11-16 11:04:48,141 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 228 predicate places. [2022-11-16 11:04:48,141 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 287 transitions, 2695 flow [2022-11-16 11:04:48,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:48,141 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:48,141 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:04:48,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-16 11:04:48,142 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:04:48,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:48,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1872896644, now seen corresponding path program 45 times [2022-11-16 11:04:48,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:48,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475621323] [2022-11-16 11:04:48,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:48,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:48,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:48,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:48,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:48,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475621323] [2022-11-16 11:04:48,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475621323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:04:48,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:04:48,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:04:48,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458103297] [2022-11-16 11:04:48,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:04:48,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:04:48,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:48,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:04:48,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:04:48,702 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:04:48,702 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 287 transitions, 2695 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:48,702 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:48,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:04:48,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:50,425 INFO L130 PetriNetUnfolder]: 305/862 cut-off events. [2022-11-16 11:04:50,426 INFO L131 PetriNetUnfolder]: For 9634/9634 co-relation queries the response was YES. [2022-11-16 11:04:50,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5398 conditions, 862 events. 305/862 cut-off events. For 9634/9634 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4545 event pairs, 52 based on Foata normal form. 1/861 useless extension candidates. Maximal degree in co-relation 5294. Up to 544 conditions per place. [2022-11-16 11:04:50,437 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 162 selfloop transitions, 101 changer transitions 37/339 dead transitions. [2022-11-16 11:04:50,438 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 339 transitions, 3866 flow [2022-11-16 11:04:50,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-16 11:04:50,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-16 11:04:50,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1909 transitions. [2022-11-16 11:04:50,440 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5641252955082743 [2022-11-16 11:04:50,441 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1909 transitions. [2022-11-16 11:04:50,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1909 transitions. [2022-11-16 11:04:50,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:50,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1909 transitions. [2022-11-16 11:04:50,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 53.02777777777778) internal successors, (1909), 36 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:50,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:50,496 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:50,496 INFO L175 Difference]: Start difference. First operand has 316 places, 287 transitions, 2695 flow. Second operand 36 states and 1909 transitions. [2022-11-16 11:04:50,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 339 transitions, 3866 flow [2022-11-16 11:04:50,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 339 transitions, 3627 flow, removed 72 selfloop flow, removed 27 redundant places. [2022-11-16 11:04:50,545 INFO L231 Difference]: Finished difference. Result has 326 places, 290 transitions, 2850 flow [2022-11-16 11:04:50,545 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2512, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2850, PETRI_PLACES=326, PETRI_TRANSITIONS=290} [2022-11-16 11:04:50,546 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 238 predicate places. [2022-11-16 11:04:50,546 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 290 transitions, 2850 flow [2022-11-16 11:04:50,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:50,546 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:50,547 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:04:50,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-11-16 11:04:50,547 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:04:50,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:50,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1738087850, now seen corresponding path program 46 times [2022-11-16 11:04:50,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:50,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996759157] [2022-11-16 11:04:50,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:50,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:51,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:51,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:51,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996759157] [2022-11-16 11:04:51,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996759157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:04:51,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:04:51,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:04:51,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776589555] [2022-11-16 11:04:51,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:04:51,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:04:51,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:51,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:04:51,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:04:51,096 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:04:51,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 290 transitions, 2850 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:51,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:51,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:04:51,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:52,588 INFO L130 PetriNetUnfolder]: 305/861 cut-off events. [2022-11-16 11:04:52,588 INFO L131 PetriNetUnfolder]: For 9789/9789 co-relation queries the response was YES. [2022-11-16 11:04:52,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5512 conditions, 861 events. 305/861 cut-off events. For 9789/9789 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4518 event pairs, 57 based on Foata normal form. 1/860 useless extension candidates. Maximal degree in co-relation 5405. Up to 557 conditions per place. [2022-11-16 11:04:52,594 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 174 selfloop transitions, 89 changer transitions 38/340 dead transitions. [2022-11-16 11:04:52,595 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 340 transitions, 3979 flow [2022-11-16 11:04:52,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 11:04:52,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 11:04:52,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1858 transitions. [2022-11-16 11:04:52,597 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.564741641337386 [2022-11-16 11:04:52,597 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1858 transitions. [2022-11-16 11:04:52,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1858 transitions. [2022-11-16 11:04:52,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:52,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1858 transitions. [2022-11-16 11:04:52,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.08571428571429) internal successors, (1858), 35 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:52,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:52,600 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:52,600 INFO L175 Difference]: Start difference. First operand has 326 places, 290 transitions, 2850 flow. Second operand 35 states and 1858 transitions. [2022-11-16 11:04:52,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 340 transitions, 3979 flow [2022-11-16 11:04:52,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 340 transitions, 3730 flow, removed 53 selfloop flow, removed 33 redundant places. [2022-11-16 11:04:52,674 INFO L231 Difference]: Finished difference. Result has 331 places, 290 transitions, 2905 flow [2022-11-16 11:04:52,675 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2647, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2905, PETRI_PLACES=331, PETRI_TRANSITIONS=290} [2022-11-16 11:04:52,675 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 243 predicate places. [2022-11-16 11:04:52,675 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 290 transitions, 2905 flow [2022-11-16 11:04:52,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:52,676 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:52,676 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:04:52,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-11-16 11:04:52,676 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:04:52,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:52,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1371800656, now seen corresponding path program 47 times [2022-11-16 11:04:52,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:52,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875581257] [2022-11-16 11:04:52,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:52,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:53,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:53,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:53,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875581257] [2022-11-16 11:04:53,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875581257] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:04:53,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:04:53,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:04:53,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677887395] [2022-11-16 11:04:53,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:04:53,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:04:53,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:53,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:04:53,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:04:53,278 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:04:53,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 290 transitions, 2905 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:53,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:53,279 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:04:53,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:54,992 INFO L130 PetriNetUnfolder]: 306/842 cut-off events. [2022-11-16 11:04:54,992 INFO L131 PetriNetUnfolder]: For 9877/9877 co-relation queries the response was YES. [2022-11-16 11:04:54,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5600 conditions, 842 events. 306/842 cut-off events. For 9877/9877 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4375 event pairs, 58 based on Foata normal form. 1/841 useless extension candidates. Maximal degree in co-relation 5491. Up to 555 conditions per place. [2022-11-16 11:04:54,999 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 170 selfloop transitions, 100 changer transitions 34/343 dead transitions. [2022-11-16 11:04:54,999 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 343 transitions, 4161 flow [2022-11-16 11:04:54,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-16 11:04:55,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-16 11:04:55,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2009 transitions. [2022-11-16 11:04:55,002 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5624300111982082 [2022-11-16 11:04:55,002 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2009 transitions. [2022-11-16 11:04:55,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2009 transitions. [2022-11-16 11:04:55,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:55,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2009 transitions. [2022-11-16 11:04:55,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.86842105263158) internal successors, (2009), 38 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:55,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:55,005 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:55,005 INFO L175 Difference]: Start difference. First operand has 331 places, 290 transitions, 2905 flow. Second operand 38 states and 2009 transitions. [2022-11-16 11:04:55,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 343 transitions, 4161 flow [2022-11-16 11:04:55,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 343 transitions, 3859 flow, removed 77 selfloop flow, removed 30 redundant places. [2022-11-16 11:04:55,054 INFO L231 Difference]: Finished difference. Result has 342 places, 296 transitions, 3111 flow [2022-11-16 11:04:55,055 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2675, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=3111, PETRI_PLACES=342, PETRI_TRANSITIONS=296} [2022-11-16 11:04:55,055 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 254 predicate places. [2022-11-16 11:04:55,055 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 296 transitions, 3111 flow [2022-11-16 11:04:55,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:55,056 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:55,056 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:04:55,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-11-16 11:04:55,056 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:04:55,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:55,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1767480892, now seen corresponding path program 48 times [2022-11-16 11:04:55,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:55,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514909531] [2022-11-16 11:04:55,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:55,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:55,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:55,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:55,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514909531] [2022-11-16 11:04:55,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514909531] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:04:55,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:04:55,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:04:55,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186790356] [2022-11-16 11:04:55,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:04:55,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:04:55,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:55,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:04:55,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:04:55,660 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:04:55,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 296 transitions, 3111 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:55,668 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:55,668 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:04:55,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:57,252 INFO L130 PetriNetUnfolder]: 298/851 cut-off events. [2022-11-16 11:04:57,252 INFO L131 PetriNetUnfolder]: For 9827/9827 co-relation queries the response was YES. [2022-11-16 11:04:57,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5600 conditions, 851 events. 298/851 cut-off events. For 9827/9827 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4464 event pairs, 59 based on Foata normal form. 1/850 useless extension candidates. Maximal degree in co-relation 5486. Up to 555 conditions per place. [2022-11-16 11:04:57,259 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 170 selfloop transitions, 90 changer transitions 36/335 dead transitions. [2022-11-16 11:04:57,259 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 335 transitions, 4067 flow [2022-11-16 11:04:57,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 11:04:57,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 11:04:57,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1855 transitions. [2022-11-16 11:04:57,261 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2022-11-16 11:04:57,262 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1855 transitions. [2022-11-16 11:04:57,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1855 transitions. [2022-11-16 11:04:57,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:57,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1855 transitions. [2022-11-16 11:04:57,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.0) internal successors, (1855), 35 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:57,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:57,265 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:57,265 INFO L175 Difference]: Start difference. First operand has 342 places, 296 transitions, 3111 flow. Second operand 35 states and 1855 transitions. [2022-11-16 11:04:57,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 335 transitions, 4067 flow [2022-11-16 11:04:57,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 335 transitions, 3702 flow, removed 101 selfloop flow, removed 31 redundant places. [2022-11-16 11:04:57,322 INFO L231 Difference]: Finished difference. Result has 345 places, 288 transitions, 2966 flow [2022-11-16 11:04:57,323 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2790, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2966, PETRI_PLACES=345, PETRI_TRANSITIONS=288} [2022-11-16 11:04:57,323 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 257 predicate places. [2022-11-16 11:04:57,323 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 288 transitions, 2966 flow [2022-11-16 11:04:57,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:57,324 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:57,324 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:04:57,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-11-16 11:04:57,324 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:04:57,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:57,325 INFO L85 PathProgramCache]: Analyzing trace with hash 960424702, now seen corresponding path program 49 times [2022-11-16 11:04:57,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:57,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849897624] [2022-11-16 11:04:57,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:57,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:57,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:57,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:57,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:57,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849897624] [2022-11-16 11:04:57,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849897624] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:04:57,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:04:57,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-16 11:04:57,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438966978] [2022-11-16 11:04:57,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:04:57,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:04:57,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:57,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:04:57,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:04:57,787 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:04:57,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 288 transitions, 2966 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:57,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:57,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:04:57,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:59,256 INFO L130 PetriNetUnfolder]: 300/863 cut-off events. [2022-11-16 11:04:59,256 INFO L131 PetriNetUnfolder]: For 9796/9796 co-relation queries the response was YES. [2022-11-16 11:04:59,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5613 conditions, 863 events. 300/863 cut-off events. For 9796/9796 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4553 event pairs, 50 based on Foata normal form. 1/862 useless extension candidates. Maximal degree in co-relation 5498. Up to 560 conditions per place. [2022-11-16 11:04:59,263 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 187 selfloop transitions, 86 changer transitions 30/342 dead transitions. [2022-11-16 11:04:59,264 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 342 transitions, 4187 flow [2022-11-16 11:04:59,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 11:04:59,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-16 11:04:59,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1814 transitions. [2022-11-16 11:04:59,266 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.567584480600751 [2022-11-16 11:04:59,266 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1814 transitions. [2022-11-16 11:04:59,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1814 transitions. [2022-11-16 11:04:59,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:59,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1814 transitions. [2022-11-16 11:04:59,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.35294117647059) internal successors, (1814), 34 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:59,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:59,272 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:59,272 INFO L175 Difference]: Start difference. First operand has 345 places, 288 transitions, 2966 flow. Second operand 34 states and 1814 transitions. [2022-11-16 11:04:59,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 342 transitions, 4187 flow [2022-11-16 11:04:59,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 342 transitions, 3843 flow, removed 38 selfloop flow, removed 38 redundant places. [2022-11-16 11:04:59,327 INFO L231 Difference]: Finished difference. Result has 337 places, 296 transitions, 3029 flow [2022-11-16 11:04:59,327 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2670, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=3029, PETRI_PLACES=337, PETRI_TRANSITIONS=296} [2022-11-16 11:04:59,327 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 249 predicate places. [2022-11-16 11:04:59,327 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 296 transitions, 3029 flow [2022-11-16 11:04:59,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:59,328 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:59,328 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:04:59,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-11-16 11:04:59,328 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:04:59,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:59,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1694596224, now seen corresponding path program 50 times [2022-11-16 11:04:59,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:59,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890589876] [2022-11-16 11:04:59,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:59,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:59,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:59,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:59,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:59,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890589876] [2022-11-16 11:04:59,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890589876] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:04:59,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:04:59,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:04:59,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682636064] [2022-11-16 11:04:59,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:04:59,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:04:59,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:59,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:04:59,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:04:59,834 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:04:59,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 296 transitions, 3029 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:59,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:59,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:04:59,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:01,315 INFO L130 PetriNetUnfolder]: 306/885 cut-off events. [2022-11-16 11:05:01,316 INFO L131 PetriNetUnfolder]: For 9888/9888 co-relation queries the response was YES. [2022-11-16 11:05:01,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5651 conditions, 885 events. 306/885 cut-off events. For 9888/9888 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4760 event pairs, 62 based on Foata normal form. 1/884 useless extension candidates. Maximal degree in co-relation 5539. Up to 583 conditions per place. [2022-11-16 11:05:01,323 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 195 selfloop transitions, 85 changer transitions 34/353 dead transitions. [2022-11-16 11:05:01,323 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 353 transitions, 4236 flow [2022-11-16 11:05:01,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-16 11:05:01,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-16 11:05:01,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1910 transitions. [2022-11-16 11:05:01,326 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5644208037825059 [2022-11-16 11:05:01,326 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1910 transitions. [2022-11-16 11:05:01,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1910 transitions. [2022-11-16 11:05:01,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:01,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1910 transitions. [2022-11-16 11:05:01,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 53.05555555555556) internal successors, (1910), 36 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:01,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:01,329 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:01,329 INFO L175 Difference]: Start difference. First operand has 337 places, 296 transitions, 3029 flow. Second operand 36 states and 1910 transitions. [2022-11-16 11:05:01,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 353 transitions, 4236 flow [2022-11-16 11:05:01,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 353 transitions, 3925 flow, removed 84 selfloop flow, removed 31 redundant places. [2022-11-16 11:05:01,414 INFO L231 Difference]: Finished difference. Result has 348 places, 306 transitions, 3145 flow [2022-11-16 11:05:01,415 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2786, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=3145, PETRI_PLACES=348, PETRI_TRANSITIONS=306} [2022-11-16 11:05:01,415 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 260 predicate places. [2022-11-16 11:05:01,415 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 306 transitions, 3145 flow [2022-11-16 11:05:01,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:01,415 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:01,415 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:01,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-11-16 11:05:01,415 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:05:01,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:01,416 INFO L85 PathProgramCache]: Analyzing trace with hash -2087787960, now seen corresponding path program 51 times [2022-11-16 11:05:01,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:01,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689010700] [2022-11-16 11:05:01,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:01,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:01,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:02,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:02,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:02,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689010700] [2022-11-16 11:05:02,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689010700] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:02,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:02,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-16 11:05:02,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107270831] [2022-11-16 11:05:02,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:02,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:05:02,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:02,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:05:02,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:05:02,020 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:05:02,021 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 306 transitions, 3145 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:02,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:02,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:05:02,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:04,172 INFO L130 PetriNetUnfolder]: 348/998 cut-off events. [2022-11-16 11:05:04,172 INFO L131 PetriNetUnfolder]: For 11542/11542 co-relation queries the response was YES. [2022-11-16 11:05:04,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6391 conditions, 998 events. 348/998 cut-off events. For 11542/11542 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 5516 event pairs, 36 based on Foata normal form. 1/997 useless extension candidates. Maximal degree in co-relation 6275. Up to 612 conditions per place. [2022-11-16 11:05:04,181 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 216 selfloop transitions, 155 changer transitions 22/432 dead transitions. [2022-11-16 11:05:04,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 432 transitions, 5466 flow [2022-11-16 11:05:04,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-16 11:05:04,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-11-16 11:05:04,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 2728 transitions. [2022-11-16 11:05:04,184 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.55810147299509 [2022-11-16 11:05:04,184 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 2728 transitions. [2022-11-16 11:05:04,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 2728 transitions. [2022-11-16 11:05:04,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:04,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 2728 transitions. [2022-11-16 11:05:04,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 52.46153846153846) internal successors, (2728), 52 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:04,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 94.0) internal successors, (4982), 53 states have internal predecessors, (4982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:04,189 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 94.0) internal successors, (4982), 53 states have internal predecessors, (4982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:04,189 INFO L175 Difference]: Start difference. First operand has 348 places, 306 transitions, 3145 flow. Second operand 52 states and 2728 transitions. [2022-11-16 11:05:04,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 432 transitions, 5466 flow [2022-11-16 11:05:04,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 432 transitions, 5210 flow, removed 73 selfloop flow, removed 28 redundant places. [2022-11-16 11:05:04,253 INFO L231 Difference]: Finished difference. Result has 381 places, 389 transitions, 4519 flow [2022-11-16 11:05:04,254 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2970, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=4519, PETRI_PLACES=381, PETRI_TRANSITIONS=389} [2022-11-16 11:05:04,254 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 293 predicate places. [2022-11-16 11:05:04,254 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 389 transitions, 4519 flow [2022-11-16 11:05:04,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:04,255 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:04,255 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:04,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-11-16 11:05:04,255 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:05:04,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:04,256 INFO L85 PathProgramCache]: Analyzing trace with hash -478736964, now seen corresponding path program 52 times [2022-11-16 11:05:04,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:04,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51563728] [2022-11-16 11:05:04,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:04,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:04,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:04,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:04,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51563728] [2022-11-16 11:05:04,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51563728] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:04,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:04,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:05:04,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556471291] [2022-11-16 11:05:04,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:04,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:05:04,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:04,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:05:04,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:05:04,785 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:05:04,786 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 389 transitions, 4519 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:04,786 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:04,786 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:05:04,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:06,439 INFO L130 PetriNetUnfolder]: 355/1033 cut-off events. [2022-11-16 11:05:06,439 INFO L131 PetriNetUnfolder]: For 13178/13178 co-relation queries the response was YES. [2022-11-16 11:05:06,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6995 conditions, 1033 events. 355/1033 cut-off events. For 13178/13178 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5925 event pairs, 49 based on Foata normal form. 1/1032 useless extension candidates. Maximal degree in co-relation 6869. Up to 673 conditions per place. [2022-11-16 11:05:06,449 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 265 selfloop transitions, 110 changer transitions 29/443 dead transitions. [2022-11-16 11:05:06,449 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 443 transitions, 5944 flow [2022-11-16 11:05:06,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-16 11:05:06,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-16 11:05:06,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2066 transitions. [2022-11-16 11:05:06,452 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.563557010365521 [2022-11-16 11:05:06,452 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2066 transitions. [2022-11-16 11:05:06,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2066 transitions. [2022-11-16 11:05:06,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:06,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2066 transitions. [2022-11-16 11:05:06,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 52.97435897435897) internal successors, (2066), 39 states have internal predecessors, (2066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:06,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:06,457 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:06,457 INFO L175 Difference]: Start difference. First operand has 381 places, 389 transitions, 4519 flow. Second operand 39 states and 2066 transitions. [2022-11-16 11:05:06,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 443 transitions, 5944 flow [2022-11-16 11:05:06,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 443 transitions, 5178 flow, removed 332 selfloop flow, removed 21 redundant places. [2022-11-16 11:05:06,555 INFO L231 Difference]: Finished difference. Result has 402 places, 398 transitions, 4195 flow [2022-11-16 11:05:06,556 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3777, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=4195, PETRI_PLACES=402, PETRI_TRANSITIONS=398} [2022-11-16 11:05:06,556 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 314 predicate places. [2022-11-16 11:05:06,556 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 398 transitions, 4195 flow [2022-11-16 11:05:06,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:06,556 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:06,557 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:06,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-11-16 11:05:06,557 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:05:06,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:06,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1724597186, now seen corresponding path program 53 times [2022-11-16 11:05:06,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:06,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264930346] [2022-11-16 11:05:06,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:06,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:06,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:07,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:07,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:07,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264930346] [2022-11-16 11:05:07,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264930346] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:07,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:07,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:05:07,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123734440] [2022-11-16 11:05:07,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:07,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:05:07,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:07,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:05:07,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:05:07,172 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:05:07,173 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 398 transitions, 4195 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:07,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:07,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:05:07,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:09,253 INFO L130 PetriNetUnfolder]: 390/1139 cut-off events. [2022-11-16 11:05:09,253 INFO L131 PetriNetUnfolder]: For 15081/15081 co-relation queries the response was YES. [2022-11-16 11:05:09,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7552 conditions, 1139 events. 390/1139 cut-off events. For 15081/15081 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 6729 event pairs, 43 based on Foata normal form. 1/1138 useless extension candidates. Maximal degree in co-relation 7420. Up to 658 conditions per place. [2022-11-16 11:05:09,263 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 236 selfloop transitions, 203 changer transitions 23/501 dead transitions. [2022-11-16 11:05:09,263 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 501 transitions, 6622 flow [2022-11-16 11:05:09,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-16 11:05:09,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-11-16 11:05:09,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 2426 transitions. [2022-11-16 11:05:09,266 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.561054579093432 [2022-11-16 11:05:09,266 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 2426 transitions. [2022-11-16 11:05:09,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 2426 transitions. [2022-11-16 11:05:09,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:09,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 2426 transitions. [2022-11-16 11:05:09,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 52.73913043478261) internal successors, (2426), 46 states have internal predecessors, (2426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:09,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 94.0) internal successors, (4418), 47 states have internal predecessors, (4418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:09,270 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 94.0) internal successors, (4418), 47 states have internal predecessors, (4418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:09,270 INFO L175 Difference]: Start difference. First operand has 402 places, 398 transitions, 4195 flow. Second operand 46 states and 2426 transitions. [2022-11-16 11:05:09,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 501 transitions, 6622 flow [2022-11-16 11:05:09,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 501 transitions, 6257 flow, removed 113 selfloop flow, removed 34 redundant places. [2022-11-16 11:05:09,361 INFO L231 Difference]: Finished difference. Result has 419 places, 452 transitions, 5421 flow [2022-11-16 11:05:09,361 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3982, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=5421, PETRI_PLACES=419, PETRI_TRANSITIONS=452} [2022-11-16 11:05:09,362 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 331 predicate places. [2022-11-16 11:05:09,362 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 452 transitions, 5421 flow [2022-11-16 11:05:09,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:09,362 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:09,362 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:09,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-11-16 11:05:09,362 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:05:09,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:09,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1113514368, now seen corresponding path program 54 times [2022-11-16 11:05:09,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:09,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265899499] [2022-11-16 11:05:09,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:09,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:09,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:09,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:09,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:09,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265899499] [2022-11-16 11:05:09,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265899499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:09,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:09,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:05:09,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835524518] [2022-11-16 11:05:09,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:09,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:05:09,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:09,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:05:09,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:05:09,834 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:05:09,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 452 transitions, 5421 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:09,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:09,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:05:09,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:11,600 INFO L130 PetriNetUnfolder]: 395/1152 cut-off events. [2022-11-16 11:05:11,600 INFO L131 PetriNetUnfolder]: For 17145/17145 co-relation queries the response was YES. [2022-11-16 11:05:11,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8158 conditions, 1152 events. 395/1152 cut-off events. For 17145/17145 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6870 event pairs, 41 based on Foata normal form. 1/1151 useless extension candidates. Maximal degree in co-relation 8020. Up to 780 conditions per place. [2022-11-16 11:05:11,621 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 327 selfloop transitions, 98 changer transitions 36/500 dead transitions. [2022-11-16 11:05:11,621 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 500 transitions, 6884 flow [2022-11-16 11:05:11,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-16 11:05:11,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-16 11:05:11,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1912 transitions. [2022-11-16 11:05:11,624 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5650118203309693 [2022-11-16 11:05:11,624 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1912 transitions. [2022-11-16 11:05:11,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1912 transitions. [2022-11-16 11:05:11,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:11,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1912 transitions. [2022-11-16 11:05:11,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 53.111111111111114) internal successors, (1912), 36 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:11,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:11,632 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:11,632 INFO L175 Difference]: Start difference. First operand has 419 places, 452 transitions, 5421 flow. Second operand 36 states and 1912 transitions. [2022-11-16 11:05:11,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 500 transitions, 6884 flow [2022-11-16 11:05:11,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 500 transitions, 6349 flow, removed 202 selfloop flow, removed 28 redundant places. [2022-11-16 11:05:11,851 INFO L231 Difference]: Finished difference. Result has 434 places, 452 transitions, 5213 flow [2022-11-16 11:05:11,852 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=4930, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=5213, PETRI_PLACES=434, PETRI_TRANSITIONS=452} [2022-11-16 11:05:11,852 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 346 predicate places. [2022-11-16 11:05:11,852 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 452 transitions, 5213 flow [2022-11-16 11:05:11,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:11,853 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:11,853 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:11,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-11-16 11:05:11,853 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:05:11,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:11,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1232454236, now seen corresponding path program 55 times [2022-11-16 11:05:11,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:11,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557378265] [2022-11-16 11:05:11,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:11,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:11,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:12,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:12,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:12,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557378265] [2022-11-16 11:05:12,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557378265] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:12,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:12,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:05:12,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097417976] [2022-11-16 11:05:12,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:12,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:05:12,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:12,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:05:12,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:05:12,399 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:05:12,400 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 452 transitions, 5213 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:12,400 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:12,400 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:05:12,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:14,190 INFO L130 PetriNetUnfolder]: 398/1162 cut-off events. [2022-11-16 11:05:14,191 INFO L131 PetriNetUnfolder]: For 16289/16289 co-relation queries the response was YES. [2022-11-16 11:05:14,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8113 conditions, 1162 events. 398/1162 cut-off events. For 16289/16289 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 7031 event pairs, 39 based on Foata normal form. 1/1161 useless extension candidates. Maximal degree in co-relation 7966. Up to 751 conditions per place. [2022-11-16 11:05:14,203 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 303 selfloop transitions, 141 changer transitions 30/513 dead transitions. [2022-11-16 11:05:14,203 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 513 transitions, 7000 flow [2022-11-16 11:05:14,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-16 11:05:14,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-16 11:05:14,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 2168 transitions. [2022-11-16 11:05:14,205 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5625324338349766 [2022-11-16 11:05:14,206 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 2168 transitions. [2022-11-16 11:05:14,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 2168 transitions. [2022-11-16 11:05:14,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:14,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 2168 transitions. [2022-11-16 11:05:14,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 52.8780487804878) internal successors, (2168), 41 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:14,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:14,209 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:14,209 INFO L175 Difference]: Start difference. First operand has 434 places, 452 transitions, 5213 flow. Second operand 41 states and 2168 transitions. [2022-11-16 11:05:14,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 513 transitions, 7000 flow [2022-11-16 11:05:14,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 513 transitions, 6624 flow, removed 63 selfloop flow, removed 37 redundant places. [2022-11-16 11:05:14,331 INFO L231 Difference]: Finished difference. Result has 438 places, 465 transitions, 5536 flow [2022-11-16 11:05:14,332 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=4899, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=5536, PETRI_PLACES=438, PETRI_TRANSITIONS=465} [2022-11-16 11:05:14,332 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 350 predicate places. [2022-11-16 11:05:14,332 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 465 transitions, 5536 flow [2022-11-16 11:05:14,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:14,333 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:14,333 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:14,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-11-16 11:05:14,333 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:05:14,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:14,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1955632098, now seen corresponding path program 56 times [2022-11-16 11:05:14,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:14,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464093295] [2022-11-16 11:05:14,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:14,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:14,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:14,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:14,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:14,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464093295] [2022-11-16 11:05:14,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464093295] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:14,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:14,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:05:14,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753859185] [2022-11-16 11:05:14,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:14,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:05:14,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:14,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:05:14,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:05:14,871 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:05:14,872 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 465 transitions, 5536 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:14,872 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:14,872 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:05:14,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:16,861 INFO L130 PetriNetUnfolder]: 396/1162 cut-off events. [2022-11-16 11:05:16,861 INFO L131 PetriNetUnfolder]: For 15161/15161 co-relation queries the response was YES. [2022-11-16 11:05:16,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8061 conditions, 1162 events. 396/1162 cut-off events. For 15161/15161 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7060 event pairs, 46 based on Foata normal form. 1/1161 useless extension candidates. Maximal degree in co-relation 7918. Up to 756 conditions per place. [2022-11-16 11:05:16,915 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 308 selfloop transitions, 128 changer transitions 36/511 dead transitions. [2022-11-16 11:05:16,915 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 511 transitions, 7017 flow [2022-11-16 11:05:16,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-16 11:05:16,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-16 11:05:16,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 2316 transitions. [2022-11-16 11:05:16,918 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5599613152804642 [2022-11-16 11:05:16,918 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 2316 transitions. [2022-11-16 11:05:16,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 2316 transitions. [2022-11-16 11:05:16,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:16,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 2316 transitions. [2022-11-16 11:05:16,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 52.63636363636363) internal successors, (2316), 44 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:16,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 94.0) internal successors, (4230), 45 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:16,925 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 94.0) internal successors, (4230), 45 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:16,925 INFO L175 Difference]: Start difference. First operand has 438 places, 465 transitions, 5536 flow. Second operand 44 states and 2316 transitions. [2022-11-16 11:05:16,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 511 transitions, 7017 flow [2022-11-16 11:05:17,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 511 transitions, 6694 flow, removed 90 selfloop flow, removed 34 redundant places. [2022-11-16 11:05:17,132 INFO L231 Difference]: Finished difference. Result has 453 places, 464 transitions, 5620 flow [2022-11-16 11:05:17,133 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5263, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=5620, PETRI_PLACES=453, PETRI_TRANSITIONS=464} [2022-11-16 11:05:17,133 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 365 predicate places. [2022-11-16 11:05:17,133 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 464 transitions, 5620 flow [2022-11-16 11:05:17,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:17,134 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:17,134 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:17,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-11-16 11:05:17,134 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:05:17,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:17,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1157197320, now seen corresponding path program 57 times [2022-11-16 11:05:17,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:17,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350995164] [2022-11-16 11:05:17,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:17,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:17,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:17,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:17,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:17,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350995164] [2022-11-16 11:05:17,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350995164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:17,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:17,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:05:17,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005608020] [2022-11-16 11:05:17,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:17,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:05:17,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:17,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:05:17,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:05:17,705 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:05:17,706 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 464 transitions, 5620 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:17,706 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:17,706 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:05:17,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:19,380 INFO L130 PetriNetUnfolder]: 392/1160 cut-off events. [2022-11-16 11:05:19,380 INFO L131 PetriNetUnfolder]: For 14657/14657 co-relation queries the response was YES. [2022-11-16 11:05:19,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8117 conditions, 1160 events. 392/1160 cut-off events. For 14657/14657 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 7002 event pairs, 43 based on Foata normal form. 1/1159 useless extension candidates. Maximal degree in co-relation 7967. Up to 782 conditions per place. [2022-11-16 11:05:19,391 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 335 selfloop transitions, 108 changer transitions 27/509 dead transitions. [2022-11-16 11:05:19,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 509 transitions, 7124 flow [2022-11-16 11:05:19,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 11:05:19,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 11:05:19,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1859 transitions. [2022-11-16 11:05:19,393 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5650455927051672 [2022-11-16 11:05:19,393 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1859 transitions. [2022-11-16 11:05:19,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1859 transitions. [2022-11-16 11:05:19,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:19,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1859 transitions. [2022-11-16 11:05:19,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.114285714285714) internal successors, (1859), 35 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:19,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:19,397 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:19,397 INFO L175 Difference]: Start difference. First operand has 453 places, 464 transitions, 5620 flow. Second operand 35 states and 1859 transitions. [2022-11-16 11:05:19,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 509 transitions, 7124 flow [2022-11-16 11:05:19,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 509 transitions, 6731 flow, removed 46 selfloop flow, removed 41 redundant places. [2022-11-16 11:05:19,512 INFO L231 Difference]: Finished difference. Result has 445 places, 467 transitions, 5625 flow [2022-11-16 11:05:19,512 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5269, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5625, PETRI_PLACES=445, PETRI_TRANSITIONS=467} [2022-11-16 11:05:19,513 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 357 predicate places. [2022-11-16 11:05:19,513 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 467 transitions, 5625 flow [2022-11-16 11:05:19,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:19,513 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:19,513 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:19,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-11-16 11:05:19,513 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:05:19,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:19,514 INFO L85 PathProgramCache]: Analyzing trace with hash -519573206, now seen corresponding path program 58 times [2022-11-16 11:05:19,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:19,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202302460] [2022-11-16 11:05:19,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:19,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:19,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:20,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:20,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:20,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202302460] [2022-11-16 11:05:20,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202302460] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:20,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:20,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:05:20,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752299186] [2022-11-16 11:05:20,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:20,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:05:20,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:20,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:05:20,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:05:20,031 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:05:20,031 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 467 transitions, 5625 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:20,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:20,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:05:20,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:21,681 INFO L130 PetriNetUnfolder]: 399/1173 cut-off events. [2022-11-16 11:05:21,681 INFO L131 PetriNetUnfolder]: For 15695/15695 co-relation queries the response was YES. [2022-11-16 11:05:21,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8261 conditions, 1173 events. 399/1173 cut-off events. For 15695/15695 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7095 event pairs, 54 based on Foata normal form. 1/1172 useless extension candidates. Maximal degree in co-relation 8112. Up to 784 conditions per place. [2022-11-16 11:05:21,696 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 349 selfloop transitions, 103 changer transitions 29/520 dead transitions. [2022-11-16 11:05:21,696 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 520 transitions, 7417 flow [2022-11-16 11:05:21,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 11:05:21,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-16 11:05:21,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1812 transitions. [2022-11-16 11:05:21,699 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5669586983729662 [2022-11-16 11:05:21,699 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1812 transitions. [2022-11-16 11:05:21,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1812 transitions. [2022-11-16 11:05:21,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:21,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1812 transitions. [2022-11-16 11:05:21,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.294117647058826) internal successors, (1812), 34 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:21,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:21,702 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:21,702 INFO L175 Difference]: Start difference. First operand has 445 places, 467 transitions, 5625 flow. Second operand 34 states and 1812 transitions. [2022-11-16 11:05:21,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 520 transitions, 7417 flow [2022-11-16 11:05:21,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 520 transitions, 7167 flow, removed 50 selfloop flow, removed 31 redundant places. [2022-11-16 11:05:21,840 INFO L231 Difference]: Finished difference. Result has 451 places, 478 transitions, 5939 flow [2022-11-16 11:05:21,840 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5411, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=5939, PETRI_PLACES=451, PETRI_TRANSITIONS=478} [2022-11-16 11:05:21,841 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 363 predicate places. [2022-11-16 11:05:21,841 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 478 transitions, 5939 flow [2022-11-16 11:05:21,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:21,841 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:21,842 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:21,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-11-16 11:05:21,842 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:05:21,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:21,842 INFO L85 PathProgramCache]: Analyzing trace with hash 32107294, now seen corresponding path program 59 times [2022-11-16 11:05:21,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:21,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21850974] [2022-11-16 11:05:21,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:21,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:21,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:22,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:22,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:22,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21850974] [2022-11-16 11:05:22,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21850974] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:22,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:22,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:05:22,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057069019] [2022-11-16 11:05:22,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:22,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:05:22,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:22,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:05:22,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:05:22,441 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:05:22,442 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 478 transitions, 5939 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:22,442 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:22,442 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:05:22,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:24,398 INFO L130 PetriNetUnfolder]: 400/1173 cut-off events. [2022-11-16 11:05:24,398 INFO L131 PetriNetUnfolder]: For 17591/17591 co-relation queries the response was YES. [2022-11-16 11:05:24,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8497 conditions, 1173 events. 400/1173 cut-off events. For 17591/17591 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7102 event pairs, 41 based on Foata normal form. 1/1172 useless extension candidates. Maximal degree in co-relation 8345. Up to 760 conditions per place. [2022-11-16 11:05:24,411 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 308 selfloop transitions, 150 changer transitions 27/524 dead transitions. [2022-11-16 11:05:24,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 524 transitions, 7540 flow [2022-11-16 11:05:24,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-16 11:05:24,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-11-16 11:05:24,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 2264 transitions. [2022-11-16 11:05:24,413 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5601187530925285 [2022-11-16 11:05:24,414 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 2264 transitions. [2022-11-16 11:05:24,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 2264 transitions. [2022-11-16 11:05:24,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:24,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 2264 transitions. [2022-11-16 11:05:24,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 52.651162790697676) internal successors, (2264), 43 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:24,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 94.0) internal successors, (4136), 44 states have internal predecessors, (4136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:24,417 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 94.0) internal successors, (4136), 44 states have internal predecessors, (4136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:24,418 INFO L175 Difference]: Start difference. First operand has 451 places, 478 transitions, 5939 flow. Second operand 43 states and 2264 transitions. [2022-11-16 11:05:24,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 524 transitions, 7540 flow [2022-11-16 11:05:24,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 524 transitions, 7101 flow, removed 136 selfloop flow, removed 28 redundant places. [2022-11-16 11:05:24,555 INFO L231 Difference]: Finished difference. Result has 467 places, 481 transitions, 6029 flow [2022-11-16 11:05:24,555 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5562, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=6029, PETRI_PLACES=467, PETRI_TRANSITIONS=481} [2022-11-16 11:05:24,555 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 379 predicate places. [2022-11-16 11:05:24,555 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 481 transitions, 6029 flow [2022-11-16 11:05:24,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:24,556 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:24,556 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:24,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-11-16 11:05:24,556 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:05:24,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:24,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1948725806, now seen corresponding path program 60 times [2022-11-16 11:05:24,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:24,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918994174] [2022-11-16 11:05:24,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:24,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:24,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:25,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:25,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:25,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918994174] [2022-11-16 11:05:25,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918994174] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:25,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:25,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-16 11:05:25,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647249182] [2022-11-16 11:05:25,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:25,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:05:25,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:25,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:05:25,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:05:25,034 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:05:25,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 481 transitions, 6029 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:25,034 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:25,035 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:05:25,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:26,609 INFO L130 PetriNetUnfolder]: 403/1183 cut-off events. [2022-11-16 11:05:26,609 INFO L131 PetriNetUnfolder]: For 17161/17161 co-relation queries the response was YES. [2022-11-16 11:05:26,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8608 conditions, 1183 events. 403/1183 cut-off events. For 17161/17161 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7199 event pairs, 49 based on Foata normal form. 1/1182 useless extension candidates. Maximal degree in co-relation 8454. Up to 807 conditions per place. [2022-11-16 11:05:26,622 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 358 selfloop transitions, 102 changer transitions 27/526 dead transitions. [2022-11-16 11:05:26,622 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 526 transitions, 7649 flow [2022-11-16 11:05:26,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 11:05:26,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-16 11:05:26,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1707 transitions. [2022-11-16 11:05:26,625 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5674867021276596 [2022-11-16 11:05:26,625 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1707 transitions. [2022-11-16 11:05:26,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1707 transitions. [2022-11-16 11:05:26,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:26,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1707 transitions. [2022-11-16 11:05:26,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.34375) internal successors, (1707), 32 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:26,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:26,631 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:26,631 INFO L175 Difference]: Start difference. First operand has 467 places, 481 transitions, 6029 flow. Second operand 32 states and 1707 transitions. [2022-11-16 11:05:26,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 526 transitions, 7649 flow [2022-11-16 11:05:26,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 526 transitions, 7323 flow, removed 61 selfloop flow, removed 39 redundant places. [2022-11-16 11:05:26,910 INFO L231 Difference]: Finished difference. Result has 462 places, 488 transitions, 6190 flow [2022-11-16 11:05:26,910 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5759, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=6190, PETRI_PLACES=462, PETRI_TRANSITIONS=488} [2022-11-16 11:05:26,911 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 374 predicate places. [2022-11-16 11:05:26,911 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 488 transitions, 6190 flow [2022-11-16 11:05:26,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:26,911 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:26,912 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:26,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-11-16 11:05:26,912 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:05:26,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:26,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1516929996, now seen corresponding path program 61 times [2022-11-16 11:05:26,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:26,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123268378] [2022-11-16 11:05:26,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:26,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:27,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:27,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:27,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123268378] [2022-11-16 11:05:27,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123268378] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:27,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:27,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:05:27,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893036913] [2022-11-16 11:05:27,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:27,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:05:27,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:27,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:05:27,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:05:27,525 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:05:27,526 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 488 transitions, 6190 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:27,526 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:27,526 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:05:27,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:29,271 INFO L130 PetriNetUnfolder]: 404/1196 cut-off events. [2022-11-16 11:05:29,271 INFO L131 PetriNetUnfolder]: For 17786/17786 co-relation queries the response was YES. [2022-11-16 11:05:29,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8704 conditions, 1196 events. 404/1196 cut-off events. For 17786/17786 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7325 event pairs, 50 based on Foata normal form. 1/1195 useless extension candidates. Maximal degree in co-relation 8548. Up to 808 conditions per place. [2022-11-16 11:05:29,285 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 356 selfloop transitions, 107 changer transitions 27/529 dead transitions. [2022-11-16 11:05:29,285 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 529 transitions, 7735 flow [2022-11-16 11:05:29,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 11:05:29,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-16 11:05:29,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1757 transitions. [2022-11-16 11:05:29,288 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5664087685364281 [2022-11-16 11:05:29,288 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1757 transitions. [2022-11-16 11:05:29,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1757 transitions. [2022-11-16 11:05:29,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:29,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1757 transitions. [2022-11-16 11:05:29,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.24242424242424) internal successors, (1757), 33 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:29,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:29,295 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:29,295 INFO L175 Difference]: Start difference. First operand has 462 places, 488 transitions, 6190 flow. Second operand 33 states and 1757 transitions. [2022-11-16 11:05:29,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 529 transitions, 7735 flow [2022-11-16 11:05:29,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 529 transitions, 7449 flow, removed 72 selfloop flow, removed 26 redundant places. [2022-11-16 11:05:29,448 INFO L231 Difference]: Finished difference. Result has 471 places, 491 transitions, 6300 flow [2022-11-16 11:05:29,449 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5941, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=6300, PETRI_PLACES=471, PETRI_TRANSITIONS=491} [2022-11-16 11:05:29,449 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 383 predicate places. [2022-11-16 11:05:29,449 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 491 transitions, 6300 flow [2022-11-16 11:05:29,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:29,449 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:29,449 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:29,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-11-16 11:05:29,450 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:05:29,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:29,450 INFO L85 PathProgramCache]: Analyzing trace with hash 920423182, now seen corresponding path program 62 times [2022-11-16 11:05:29,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:29,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929001472] [2022-11-16 11:05:29,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:29,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:29,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:29,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:29,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:29,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929001472] [2022-11-16 11:05:29,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929001472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:29,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:29,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:05:29,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7686389] [2022-11-16 11:05:29,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:29,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:05:29,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:29,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:05:29,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:05:29,932 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:05:29,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 491 transitions, 6300 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:29,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:29,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:05:29,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:31,790 INFO L130 PetriNetUnfolder]: 406/1197 cut-off events. [2022-11-16 11:05:31,791 INFO L131 PetriNetUnfolder]: For 18036/18036 co-relation queries the response was YES. [2022-11-16 11:05:31,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8777 conditions, 1197 events. 406/1197 cut-off events. For 18036/18036 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7315 event pairs, 40 based on Foata normal form. 1/1197 useless extension candidates. Maximal degree in co-relation 8619. Up to 840 conditions per place. [2022-11-16 11:05:31,806 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 379 selfloop transitions, 94 changer transitions 22/534 dead transitions. [2022-11-16 11:05:31,806 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 534 transitions, 7799 flow [2022-11-16 11:05:31,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-16 11:05:31,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-16 11:05:31,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1900 transitions. [2022-11-16 11:05:31,807 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5614657210401891 [2022-11-16 11:05:31,808 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1900 transitions. [2022-11-16 11:05:31,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1900 transitions. [2022-11-16 11:05:31,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:31,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1900 transitions. [2022-11-16 11:05:31,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.77777777777778) internal successors, (1900), 36 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:31,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:31,811 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:31,811 INFO L175 Difference]: Start difference. First operand has 471 places, 491 transitions, 6300 flow. Second operand 36 states and 1900 transitions. [2022-11-16 11:05:31,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 534 transitions, 7799 flow [2022-11-16 11:05:31,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 534 transitions, 7513 flow, removed 64 selfloop flow, removed 29 redundant places. [2022-11-16 11:05:32,005 INFO L231 Difference]: Finished difference. Result has 483 places, 500 transitions, 6463 flow [2022-11-16 11:05:32,006 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6058, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=6463, PETRI_PLACES=483, PETRI_TRANSITIONS=500} [2022-11-16 11:05:32,006 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 395 predicate places. [2022-11-16 11:05:32,006 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 500 transitions, 6463 flow [2022-11-16 11:05:32,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:32,007 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:32,007 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:32,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-11-16 11:05:32,007 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:05:32,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:32,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1139507504, now seen corresponding path program 63 times [2022-11-16 11:05:32,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:32,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769020864] [2022-11-16 11:05:32,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:32,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:32,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:32,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:32,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:32,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769020864] [2022-11-16 11:05:32,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769020864] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:32,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:32,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:05:32,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963426813] [2022-11-16 11:05:32,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:32,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:05:32,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:32,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:05:32,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:05:32,545 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:05:32,546 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 500 transitions, 6463 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:32,546 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:32,546 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:05:32,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:34,309 INFO L130 PetriNetUnfolder]: 399/1195 cut-off events. [2022-11-16 11:05:34,309 INFO L131 PetriNetUnfolder]: For 17685/17685 co-relation queries the response was YES. [2022-11-16 11:05:34,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8718 conditions, 1195 events. 399/1195 cut-off events. For 17685/17685 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7342 event pairs, 44 based on Foata normal form. 1/1194 useless extension candidates. Maximal degree in co-relation 8555. Up to 844 conditions per place. [2022-11-16 11:05:34,323 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 380 selfloop transitions, 88 changer transitions 19/526 dead transitions. [2022-11-16 11:05:34,323 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 526 transitions, 7610 flow [2022-11-16 11:05:34,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 11:05:34,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-16 11:05:34,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1791 transitions. [2022-11-16 11:05:34,325 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5603879849812266 [2022-11-16 11:05:34,325 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1791 transitions. [2022-11-16 11:05:34,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1791 transitions. [2022-11-16 11:05:34,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:34,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1791 transitions. [2022-11-16 11:05:34,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.6764705882353) internal successors, (1791), 34 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:34,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:34,329 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:34,329 INFO L175 Difference]: Start difference. First operand has 483 places, 500 transitions, 6463 flow. Second operand 34 states and 1791 transitions. [2022-11-16 11:05:34,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 526 transitions, 7610 flow [2022-11-16 11:05:34,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 526 transitions, 7384 flow, removed 56 selfloop flow, removed 28 redundant places. [2022-11-16 11:05:34,583 INFO L231 Difference]: Finished difference. Result has 489 places, 497 transitions, 6418 flow [2022-11-16 11:05:34,583 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6249, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=6418, PETRI_PLACES=489, PETRI_TRANSITIONS=497} [2022-11-16 11:05:34,584 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 401 predicate places. [2022-11-16 11:05:34,585 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 497 transitions, 6418 flow [2022-11-16 11:05:34,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:34,585 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:34,585 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:34,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-11-16 11:05:34,586 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:05:34,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:34,586 INFO L85 PathProgramCache]: Analyzing trace with hash -512865626, now seen corresponding path program 64 times [2022-11-16 11:05:34,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:34,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095524723] [2022-11-16 11:05:34,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:34,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:34,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:35,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:35,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:35,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095524723] [2022-11-16 11:05:35,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095524723] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:35,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:35,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:05:35,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744018579] [2022-11-16 11:05:35,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:35,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:05:35,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:35,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:05:35,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:05:35,131 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:05:35,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 497 transitions, 6418 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:35,132 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:35,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:05:35,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:36,823 INFO L130 PetriNetUnfolder]: 406/1214 cut-off events. [2022-11-16 11:05:36,823 INFO L131 PetriNetUnfolder]: For 18057/18057 co-relation queries the response was YES. [2022-11-16 11:05:36,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8906 conditions, 1214 events. 406/1214 cut-off events. For 18057/18057 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7506 event pairs, 52 based on Foata normal form. 1/1212 useless extension candidates. Maximal degree in co-relation 8742. Up to 824 conditions per place. [2022-11-16 11:05:36,838 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 369 selfloop transitions, 107 changer transitions 22/537 dead transitions. [2022-11-16 11:05:36,838 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 537 transitions, 7911 flow [2022-11-16 11:05:36,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 11:05:36,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 11:05:36,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1858 transitions. [2022-11-16 11:05:36,840 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.564741641337386 [2022-11-16 11:05:36,841 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1858 transitions. [2022-11-16 11:05:36,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1858 transitions. [2022-11-16 11:05:36,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:36,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1858 transitions. [2022-11-16 11:05:36,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.08571428571429) internal successors, (1858), 35 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:36,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:36,844 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:36,844 INFO L175 Difference]: Start difference. First operand has 489 places, 497 transitions, 6418 flow. Second operand 35 states and 1858 transitions. [2022-11-16 11:05:36,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 537 transitions, 7911 flow [2022-11-16 11:05:37,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 537 transitions, 7635 flow, removed 22 selfloop flow, removed 36 redundant places. [2022-11-16 11:05:37,026 INFO L231 Difference]: Finished difference. Result has 490 places, 503 transitions, 6576 flow [2022-11-16 11:05:37,027 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6166, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=6576, PETRI_PLACES=490, PETRI_TRANSITIONS=503} [2022-11-16 11:05:37,027 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 402 predicate places. [2022-11-16 11:05:37,027 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 503 transitions, 6576 flow [2022-11-16 11:05:37,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:37,028 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:37,028 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:37,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-11-16 11:05:37,028 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:05:37,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:37,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1877530548, now seen corresponding path program 65 times [2022-11-16 11:05:37,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:37,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298364378] [2022-11-16 11:05:37,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:37,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:37,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:37,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:37,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:37,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298364378] [2022-11-16 11:05:37,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298364378] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:37,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:37,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:05:37,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975417250] [2022-11-16 11:05:37,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:37,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:05:37,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:37,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:05:37,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:05:37,487 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:05:37,487 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 503 transitions, 6576 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:37,487 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:37,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:05:37,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:39,146 INFO L130 PetriNetUnfolder]: 409/1245 cut-off events. [2022-11-16 11:05:39,146 INFO L131 PetriNetUnfolder]: For 19497/19497 co-relation queries the response was YES. [2022-11-16 11:05:39,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9216 conditions, 1245 events. 409/1245 cut-off events. For 19497/19497 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 7900 event pairs, 59 based on Foata normal form. 1/1244 useless extension candidates. Maximal degree in co-relation 9050. Up to 863 conditions per place. [2022-11-16 11:05:39,161 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 389 selfloop transitions, 84 changer transitions 31/543 dead transitions. [2022-11-16 11:05:39,161 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 543 transitions, 8153 flow [2022-11-16 11:05:39,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 11:05:39,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-16 11:05:39,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1804 transitions. [2022-11-16 11:05:39,164 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5644555694618273 [2022-11-16 11:05:39,164 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1804 transitions. [2022-11-16 11:05:39,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1804 transitions. [2022-11-16 11:05:39,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:39,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1804 transitions. [2022-11-16 11:05:39,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.05882352941177) internal successors, (1804), 34 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:39,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:39,169 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:39,169 INFO L175 Difference]: Start difference. First operand has 490 places, 503 transitions, 6576 flow. Second operand 34 states and 1804 transitions. [2022-11-16 11:05:39,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 543 transitions, 8153 flow [2022-11-16 11:05:39,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 543 transitions, 7873 flow, removed 71 selfloop flow, removed 28 redundant places. [2022-11-16 11:05:39,337 INFO L231 Difference]: Finished difference. Result has 499 places, 501 transitions, 6575 flow [2022-11-16 11:05:39,338 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6332, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=6575, PETRI_PLACES=499, PETRI_TRANSITIONS=501} [2022-11-16 11:05:39,339 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 411 predicate places. [2022-11-16 11:05:39,339 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 501 transitions, 6575 flow [2022-11-16 11:05:39,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:39,339 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:39,339 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:39,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-11-16 11:05:39,340 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:05:39,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:39,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1524726466, now seen corresponding path program 66 times [2022-11-16 11:05:39,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:39,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368069992] [2022-11-16 11:05:39,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:39,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:39,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:39,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:39,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:39,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368069992] [2022-11-16 11:05:39,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368069992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:39,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:39,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-16 11:05:39,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121918267] [2022-11-16 11:05:39,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:39,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:05:39,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:39,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:05:39,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:05:39,893 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:05:39,893 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 501 transitions, 6575 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:39,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:39,893 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:05:39,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:42,145 INFO L130 PetriNetUnfolder]: 442/1380 cut-off events. [2022-11-16 11:05:42,145 INFO L131 PetriNetUnfolder]: For 22184/22184 co-relation queries the response was YES. [2022-11-16 11:05:42,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10069 conditions, 1380 events. 442/1380 cut-off events. For 22184/22184 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 9128 event pairs, 54 based on Foata normal form. 1/1379 useless extension candidates. Maximal degree in co-relation 9898. Up to 830 conditions per place. [2022-11-16 11:05:42,163 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 365 selfloop transitions, 189 changer transitions 22/615 dead transitions. [2022-11-16 11:05:42,163 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 615 transitions, 9319 flow [2022-11-16 11:05:42,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-16 11:05:42,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-16 11:05:42,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 2575 transitions. [2022-11-16 11:05:42,166 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5590534085974815 [2022-11-16 11:05:42,166 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 2575 transitions. [2022-11-16 11:05:42,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 2575 transitions. [2022-11-16 11:05:42,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:42,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 2575 transitions. [2022-11-16 11:05:42,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 52.55102040816327) internal successors, (2575), 49 states have internal predecessors, (2575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:42,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 94.0) internal successors, (4700), 50 states have internal predecessors, (4700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:42,171 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 94.0) internal successors, (4700), 50 states have internal predecessors, (4700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:42,171 INFO L175 Difference]: Start difference. First operand has 499 places, 501 transitions, 6575 flow. Second operand 49 states and 2575 transitions. [2022-11-16 11:05:42,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 615 transitions, 9319 flow [2022-11-16 11:05:42,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 615 transitions, 9031 flow, removed 74 selfloop flow, removed 32 redundant places. [2022-11-16 11:05:42,420 INFO L231 Difference]: Finished difference. Result has 516 places, 568 transitions, 7928 flow [2022-11-16 11:05:42,421 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6355, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=7928, PETRI_PLACES=516, PETRI_TRANSITIONS=568} [2022-11-16 11:05:42,421 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 428 predicate places. [2022-11-16 11:05:42,421 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 568 transitions, 7928 flow [2022-11-16 11:05:42,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:42,421 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:42,422 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:42,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-11-16 11:05:42,422 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:05:42,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:42,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1989330444, now seen corresponding path program 67 times [2022-11-16 11:05:42,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:42,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508455325] [2022-11-16 11:05:42,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:42,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:43,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:43,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:43,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508455325] [2022-11-16 11:05:43,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508455325] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:43,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:43,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 11:05:43,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747631153] [2022-11-16 11:05:43,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:43,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 11:05:43,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:43,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 11:05:43,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:05:43,103 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:05:43,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 568 transitions, 7928 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:43,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:43,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:05:43,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:45,651 INFO L130 PetriNetUnfolder]: 438/1378 cut-off events. [2022-11-16 11:05:45,652 INFO L131 PetriNetUnfolder]: For 24112/24112 co-relation queries the response was YES. [2022-11-16 11:05:45,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10435 conditions, 1378 events. 438/1378 cut-off events. For 24112/24112 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 9157 event pairs, 44 based on Foata normal form. 1/1377 useless extension candidates. Maximal degree in co-relation 10262. Up to 866 conditions per place. [2022-11-16 11:05:45,669 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 403 selfloop transitions, 151 changer transitions 24/617 dead transitions. [2022-11-16 11:05:45,669 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 617 transitions, 9755 flow [2022-11-16 11:05:45,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-16 11:05:45,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-11-16 11:05:45,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 2666 transitions. [2022-11-16 11:05:45,672 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5561118064246975 [2022-11-16 11:05:45,673 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 2666 transitions. [2022-11-16 11:05:45,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 2666 transitions. [2022-11-16 11:05:45,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:45,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 2666 transitions. [2022-11-16 11:05:45,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 52.27450980392157) internal successors, (2666), 51 states have internal predecessors, (2666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:45,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 94.0) internal successors, (4888), 52 states have internal predecessors, (4888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:45,678 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 94.0) internal successors, (4888), 52 states have internal predecessors, (4888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:45,678 INFO L175 Difference]: Start difference. First operand has 516 places, 568 transitions, 7928 flow. Second operand 51 states and 2666 transitions. [2022-11-16 11:05:45,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 617 transitions, 9755 flow [2022-11-16 11:05:45,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 617 transitions, 9290 flow, removed 151 selfloop flow, removed 33 redundant places. [2022-11-16 11:05:45,967 INFO L231 Difference]: Finished difference. Result has 536 places, 574 transitions, 8010 flow [2022-11-16 11:05:45,967 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7491, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=8010, PETRI_PLACES=536, PETRI_TRANSITIONS=574} [2022-11-16 11:05:45,968 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 448 predicate places. [2022-11-16 11:05:45,968 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 574 transitions, 8010 flow [2022-11-16 11:05:45,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:45,968 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:45,968 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:45,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-11-16 11:05:45,968 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:05:45,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:45,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1556785272, now seen corresponding path program 68 times [2022-11-16 11:05:45,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:45,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548130691] [2022-11-16 11:05:45,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:45,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:45,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:46,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:46,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:46,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548130691] [2022-11-16 11:05:46,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548130691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:46,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:46,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:05:46,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385723657] [2022-11-16 11:05:46,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:46,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:05:46,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:46,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:05:46,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:05:46,523 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:05:46,524 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 574 transitions, 8010 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:46,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:46,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:05:46,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:48,456 INFO L130 PetriNetUnfolder]: 447/1401 cut-off events. [2022-11-16 11:05:48,456 INFO L131 PetriNetUnfolder]: For 25002/25002 co-relation queries the response was YES. [2022-11-16 11:05:48,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10802 conditions, 1401 events. 447/1401 cut-off events. For 25002/25002 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 9346 event pairs, 57 based on Foata normal form. 1/1399 useless extension candidates. Maximal degree in co-relation 10621. Up to 947 conditions per place. [2022-11-16 11:05:48,472 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 448 selfloop transitions, 119 changer transitions 24/630 dead transitions. [2022-11-16 11:05:48,472 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 566 places, 630 transitions, 10026 flow [2022-11-16 11:05:48,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-16 11:05:48,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-16 11:05:48,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2011 transitions. [2022-11-16 11:05:48,474 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.562989921612542 [2022-11-16 11:05:48,474 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2011 transitions. [2022-11-16 11:05:48,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2011 transitions. [2022-11-16 11:05:48,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:48,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2011 transitions. [2022-11-16 11:05:48,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.921052631578945) internal successors, (2011), 38 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:48,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:48,478 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:48,478 INFO L175 Difference]: Start difference. First operand has 536 places, 574 transitions, 8010 flow. Second operand 38 states and 2011 transitions. [2022-11-16 11:05:48,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 566 places, 630 transitions, 10026 flow [2022-11-16 11:05:48,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 630 transitions, 9592 flow, removed 100 selfloop flow, removed 42 redundant places. [2022-11-16 11:05:48,701 INFO L231 Difference]: Finished difference. Result has 535 places, 591 transitions, 8255 flow [2022-11-16 11:05:48,702 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7600, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8255, PETRI_PLACES=535, PETRI_TRANSITIONS=591} [2022-11-16 11:05:48,702 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 447 predicate places. [2022-11-16 11:05:48,702 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 591 transitions, 8255 flow [2022-11-16 11:05:48,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:48,702 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:48,702 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:48,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-11-16 11:05:48,703 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:05:48,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:48,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1042239066, now seen corresponding path program 69 times [2022-11-16 11:05:48,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:48,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207611122] [2022-11-16 11:05:48,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:48,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:48,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:49,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:49,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:49,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207611122] [2022-11-16 11:05:49,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207611122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:49,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:49,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:05:49,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77366816] [2022-11-16 11:05:49,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:49,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:05:49,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:49,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:05:49,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:05:49,174 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:05:49,175 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 591 transitions, 8255 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:49,175 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:49,175 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:05:49,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:51,127 INFO L130 PetriNetUnfolder]: 447/1426 cut-off events. [2022-11-16 11:05:51,127 INFO L131 PetriNetUnfolder]: For 25535/25535 co-relation queries the response was YES. [2022-11-16 11:05:51,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10940 conditions, 1426 events. 447/1426 cut-off events. For 25535/25535 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 9649 event pairs, 54 based on Foata normal form. 1/1425 useless extension candidates. Maximal degree in co-relation 10755. Up to 950 conditions per place. [2022-11-16 11:05:51,144 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 452 selfloop transitions, 118 changer transitions 22/631 dead transitions. [2022-11-16 11:05:51,144 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 631 transitions, 10060 flow [2022-11-16 11:05:51,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-16 11:05:51,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-16 11:05:51,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1908 transitions. [2022-11-16 11:05:51,147 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2022-11-16 11:05:51,147 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1908 transitions. [2022-11-16 11:05:51,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1908 transitions. [2022-11-16 11:05:51,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:51,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1908 transitions. [2022-11-16 11:05:51,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 53.0) internal successors, (1908), 36 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:51,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:51,150 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:51,150 INFO L175 Difference]: Start difference. First operand has 535 places, 591 transitions, 8255 flow. Second operand 36 states and 1908 transitions. [2022-11-16 11:05:51,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 631 transitions, 10060 flow [2022-11-16 11:05:51,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 631 transitions, 9781 flow, removed 64 selfloop flow, removed 30 redundant places. [2022-11-16 11:05:51,413 INFO L231 Difference]: Finished difference. Result has 545 places, 597 transitions, 8476 flow [2022-11-16 11:05:51,414 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8006, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=8476, PETRI_PLACES=545, PETRI_TRANSITIONS=597} [2022-11-16 11:05:51,414 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 457 predicate places. [2022-11-16 11:05:51,414 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 597 transitions, 8476 flow [2022-11-16 11:05:51,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:51,414 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:51,415 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:51,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-11-16 11:05:51,415 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:05:51,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:51,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1046651676, now seen corresponding path program 70 times [2022-11-16 11:05:51,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:51,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797751084] [2022-11-16 11:05:51,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:51,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:51,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:51,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:51,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:51,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797751084] [2022-11-16 11:05:51,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797751084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:51,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:51,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:05:51,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175383285] [2022-11-16 11:05:51,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:51,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:05:51,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:51,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:05:51,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:05:51,947 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:05:51,947 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 597 transitions, 8476 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:51,947 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:51,947 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:05:51,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:53,862 INFO L130 PetriNetUnfolder]: 447/1438 cut-off events. [2022-11-16 11:05:53,863 INFO L131 PetriNetUnfolder]: For 27719/27719 co-relation queries the response was YES. [2022-11-16 11:05:53,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11175 conditions, 1438 events. 447/1438 cut-off events. For 27719/27719 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 9850 event pairs, 41 based on Foata normal form. 1/1437 useless extension candidates. Maximal degree in co-relation 10984. Up to 932 conditions per place. [2022-11-16 11:05:53,881 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 441 selfloop transitions, 132 changer transitions 32/644 dead transitions. [2022-11-16 11:05:53,881 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 644 transitions, 10329 flow [2022-11-16 11:05:53,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-16 11:05:53,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-16 11:05:53,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1912 transitions. [2022-11-16 11:05:53,883 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5650118203309693 [2022-11-16 11:05:53,883 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1912 transitions. [2022-11-16 11:05:53,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1912 transitions. [2022-11-16 11:05:53,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:53,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1912 transitions. [2022-11-16 11:05:53,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 53.111111111111114) internal successors, (1912), 36 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:53,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:53,886 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:53,886 INFO L175 Difference]: Start difference. First operand has 545 places, 597 transitions, 8476 flow. Second operand 36 states and 1912 transitions. [2022-11-16 11:05:53,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 644 transitions, 10329 flow [2022-11-16 11:05:54,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 644 transitions, 10006 flow, removed 87 selfloop flow, removed 29 redundant places. [2022-11-16 11:05:54,147 INFO L231 Difference]: Finished difference. Result has 555 places, 594 transitions, 8486 flow [2022-11-16 11:05:54,148 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8197, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=8486, PETRI_PLACES=555, PETRI_TRANSITIONS=594} [2022-11-16 11:05:54,148 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 467 predicate places. [2022-11-16 11:05:54,148 INFO L495 AbstractCegarLoop]: Abstraction has has 555 places, 594 transitions, 8486 flow [2022-11-16 11:05:54,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:54,148 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:54,148 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:54,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-11-16 11:05:54,149 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:05:54,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:54,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1300957692, now seen corresponding path program 71 times [2022-11-16 11:05:54,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:54,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126703682] [2022-11-16 11:05:54,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:54,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:54,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:54,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:54,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:54,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126703682] [2022-11-16 11:05:54,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126703682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:54,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:54,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-16 11:05:54,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549796474] [2022-11-16 11:05:54,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:54,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:05:54,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:54,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:05:54,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:05:54,645 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:05:54,645 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 594 transitions, 8486 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:54,646 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:54,646 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:05:54,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:56,711 INFO L130 PetriNetUnfolder]: 443/1413 cut-off events. [2022-11-16 11:05:56,711 INFO L131 PetriNetUnfolder]: For 27436/27436 co-relation queries the response was YES. [2022-11-16 11:05:56,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11203 conditions, 1413 events. 443/1413 cut-off events. For 27436/27436 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 9610 event pairs, 47 based on Foata normal form. 1/1411 useless extension candidates. Maximal degree in co-relation 11007. Up to 975 conditions per place. [2022-11-16 11:05:56,730 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 466 selfloop transitions, 106 changer transitions 22/633 dead transitions. [2022-11-16 11:05:56,730 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 633 transitions, 10306 flow [2022-11-16 11:05:56,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-16 11:05:56,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-16 11:05:56,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1951 transitions. [2022-11-16 11:05:56,732 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5609545715928694 [2022-11-16 11:05:56,732 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1951 transitions. [2022-11-16 11:05:56,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1951 transitions. [2022-11-16 11:05:56,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:56,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1951 transitions. [2022-11-16 11:05:56,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.729729729729726) internal successors, (1951), 37 states have internal predecessors, (1951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:56,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:56,737 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:56,737 INFO L175 Difference]: Start difference. First operand has 555 places, 594 transitions, 8486 flow. Second operand 37 states and 1951 transitions. [2022-11-16 11:05:56,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 633 transitions, 10306 flow [2022-11-16 11:05:57,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 550 places, 633 transitions, 9965 flow, removed 38 selfloop flow, removed 32 redundant places. [2022-11-16 11:05:57,062 INFO L231 Difference]: Finished difference. Result has 561 places, 599 transitions, 8609 flow [2022-11-16 11:05:57,062 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8183, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=8609, PETRI_PLACES=561, PETRI_TRANSITIONS=599} [2022-11-16 11:05:57,062 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 473 predicate places. [2022-11-16 11:05:57,062 INFO L495 AbstractCegarLoop]: Abstraction has has 561 places, 599 transitions, 8609 flow [2022-11-16 11:05:57,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:57,063 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:57,063 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:57,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-11-16 11:05:57,063 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:05:57,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:57,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1965681016, now seen corresponding path program 72 times [2022-11-16 11:05:57,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:57,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899061030] [2022-11-16 11:05:57,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:57,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:57,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:57,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:57,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899061030] [2022-11-16 11:05:57,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899061030] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:57,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:57,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:05:57,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132212717] [2022-11-16 11:05:57,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:57,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:05:57,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:57,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:05:57,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:05:57,567 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:05:57,567 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 599 transitions, 8609 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:57,567 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:57,567 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:05:57,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:59,570 INFO L130 PetriNetUnfolder]: 436/1421 cut-off events. [2022-11-16 11:05:59,570 INFO L131 PetriNetUnfolder]: For 27553/27553 co-relation queries the response was YES. [2022-11-16 11:05:59,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11085 conditions, 1421 events. 436/1421 cut-off events. For 27553/27553 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 9747 event pairs, 55 based on Foata normal form. 1/1420 useless extension candidates. Maximal degree in co-relation 10887. Up to 961 conditions per place. [2022-11-16 11:05:59,587 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 458 selfloop transitions, 106 changer transitions 22/625 dead transitions. [2022-11-16 11:05:59,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 588 places, 625 transitions, 10008 flow [2022-11-16 11:05:59,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 11:05:59,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-16 11:05:59,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1799 transitions. [2022-11-16 11:05:59,589 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5628911138923655 [2022-11-16 11:05:59,590 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1799 transitions. [2022-11-16 11:05:59,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1799 transitions. [2022-11-16 11:05:59,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:59,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1799 transitions. [2022-11-16 11:05:59,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.911764705882355) internal successors, (1799), 34 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:59,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:59,593 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:59,593 INFO L175 Difference]: Start difference. First operand has 561 places, 599 transitions, 8609 flow. Second operand 34 states and 1799 transitions. [2022-11-16 11:05:59,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 588 places, 625 transitions, 10008 flow [2022-11-16 11:05:59,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 625 transitions, 9710 flow, removed 74 selfloop flow, removed 31 redundant places. [2022-11-16 11:05:59,856 INFO L231 Difference]: Finished difference. Result has 564 places, 593 transitions, 8494 flow [2022-11-16 11:05:59,857 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8327, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=8494, PETRI_PLACES=564, PETRI_TRANSITIONS=593} [2022-11-16 11:05:59,857 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 476 predicate places. [2022-11-16 11:05:59,857 INFO L495 AbstractCegarLoop]: Abstraction has has 564 places, 593 transitions, 8494 flow [2022-11-16 11:05:59,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:59,858 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:59,858 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:59,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-11-16 11:05:59,858 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:05:59,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:59,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1548872244, now seen corresponding path program 73 times [2022-11-16 11:05:59,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:59,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299355254] [2022-11-16 11:05:59,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:59,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:59,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:00,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:06:00,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:00,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299355254] [2022-11-16 11:06:00,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299355254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:00,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:00,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:06:00,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502922094] [2022-11-16 11:06:00,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:00,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:06:00,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:00,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:06:00,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:06:00,453 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:06:00,454 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 564 places, 593 transitions, 8494 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:00,454 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:06:00,454 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:06:00,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:06:02,812 INFO L130 PetriNetUnfolder]: 448/1444 cut-off events. [2022-11-16 11:06:02,812 INFO L131 PetriNetUnfolder]: For 27750/27750 co-relation queries the response was YES. [2022-11-16 11:06:02,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11373 conditions, 1444 events. 448/1444 cut-off events. For 27750/27750 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 9893 event pairs, 54 based on Foata normal form. 1/1442 useless extension candidates. Maximal degree in co-relation 11174. Up to 923 conditions per place. [2022-11-16 11:06:02,831 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 416 selfloop transitions, 169 changer transitions 24/648 dead transitions. [2022-11-16 11:06:02,832 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 599 places, 648 transitions, 10550 flow [2022-11-16 11:06:02,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-16 11:06:02,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-16 11:06:02,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 2366 transitions. [2022-11-16 11:06:02,834 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5593380614657211 [2022-11-16 11:06:02,834 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 2366 transitions. [2022-11-16 11:06:02,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 2366 transitions. [2022-11-16 11:06:02,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:06:02,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 2366 transitions. [2022-11-16 11:06:02,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 52.577777777777776) internal successors, (2366), 45 states have internal predecessors, (2366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:02,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 94.0) internal successors, (4324), 46 states have internal predecessors, (4324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:02,838 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 94.0) internal successors, (4324), 46 states have internal predecessors, (4324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:02,838 INFO L175 Difference]: Start difference. First operand has 564 places, 593 transitions, 8494 flow. Second operand 45 states and 2366 transitions. [2022-11-16 11:06:02,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 599 places, 648 transitions, 10550 flow [2022-11-16 11:06:03,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 648 transitions, 10183 flow, removed 26 selfloop flow, removed 37 redundant places. [2022-11-16 11:06:03,107 INFO L231 Difference]: Finished difference. Result has 573 places, 610 transitions, 8943 flow [2022-11-16 11:06:03,107 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8161, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=8943, PETRI_PLACES=573, PETRI_TRANSITIONS=610} [2022-11-16 11:06:03,107 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 485 predicate places. [2022-11-16 11:06:03,107 INFO L495 AbstractCegarLoop]: Abstraction has has 573 places, 610 transitions, 8943 flow [2022-11-16 11:06:03,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:03,108 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:06:03,108 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:03,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-11-16 11:06:03,108 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:06:03,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:03,108 INFO L85 PathProgramCache]: Analyzing trace with hash -2030521222, now seen corresponding path program 74 times [2022-11-16 11:06:03,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:03,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573435918] [2022-11-16 11:06:03,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:03,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:03,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:03,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:06:03,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:03,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573435918] [2022-11-16 11:06:03,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573435918] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:03,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:03,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-16 11:06:03,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096300962] [2022-11-16 11:06:03,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:03,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:06:03,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:03,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:06:03,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:06:03,613 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:06:03,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 610 transitions, 8943 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:03,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:06:03,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:06:03,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:06:06,083 INFO L130 PetriNetUnfolder]: 448/1473 cut-off events. [2022-11-16 11:06:06,084 INFO L131 PetriNetUnfolder]: For 29479/29479 co-relation queries the response was YES. [2022-11-16 11:06:06,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11603 conditions, 1473 events. 448/1473 cut-off events. For 29479/29479 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 10315 event pairs, 44 based on Foata normal form. 1/1472 useless extension candidates. Maximal degree in co-relation 11402. Up to 891 conditions per place. [2022-11-16 11:06:06,103 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 407 selfloop transitions, 183 changer transitions 32/661 dead transitions. [2022-11-16 11:06:06,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 616 places, 661 transitions, 10919 flow [2022-11-16 11:06:06,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-16 11:06:06,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-11-16 11:06:06,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 2620 transitions. [2022-11-16 11:06:06,106 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5574468085106383 [2022-11-16 11:06:06,106 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 2620 transitions. [2022-11-16 11:06:06,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 2620 transitions. [2022-11-16 11:06:06,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:06:06,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 2620 transitions. [2022-11-16 11:06:06,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 52.4) internal successors, (2620), 50 states have internal predecessors, (2620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:06,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 94.0) internal successors, (4794), 51 states have internal predecessors, (4794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:06,111 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 94.0) internal successors, (4794), 51 states have internal predecessors, (4794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:06,111 INFO L175 Difference]: Start difference. First operand has 573 places, 610 transitions, 8943 flow. Second operand 50 states and 2620 transitions. [2022-11-16 11:06:06,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 616 places, 661 transitions, 10919 flow [2022-11-16 11:06:06,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 578 places, 661 transitions, 10506 flow, removed 87 selfloop flow, removed 38 redundant places. [2022-11-16 11:06:06,416 INFO L231 Difference]: Finished difference. Result has 590 places, 613 transitions, 9119 flow [2022-11-16 11:06:06,416 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8587, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=9119, PETRI_PLACES=590, PETRI_TRANSITIONS=613} [2022-11-16 11:06:06,416 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 502 predicate places. [2022-11-16 11:06:06,416 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 613 transitions, 9119 flow [2022-11-16 11:06:06,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:06,417 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:06:06,417 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:06,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-11-16 11:06:06,417 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:06:06,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:06,417 INFO L85 PathProgramCache]: Analyzing trace with hash 648024164, now seen corresponding path program 75 times [2022-11-16 11:06:06,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:06,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808940109] [2022-11-16 11:06:06,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:06,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:06,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:06,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:06:06,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:06,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808940109] [2022-11-16 11:06:06,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808940109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:06,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:06,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:06:06,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061146331] [2022-11-16 11:06:06,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:06,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:06:06,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:06,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:06:06,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:06:06,998 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:06:06,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 613 transitions, 9119 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:06,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:06:06,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:06:06,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:06:09,138 INFO L130 PetriNetUnfolder]: 444/1452 cut-off events. [2022-11-16 11:06:09,139 INFO L131 PetriNetUnfolder]: For 29256/29256 co-relation queries the response was YES. [2022-11-16 11:06:09,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11665 conditions, 1452 events. 444/1452 cut-off events. For 29256/29256 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 10107 event pairs, 41 based on Foata normal form. 1/1451 useless extension candidates. Maximal degree in co-relation 11458. Up to 957 conditions per place. [2022-11-16 11:06:09,159 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 456 selfloop transitions, 130 changer transitions 32/657 dead transitions. [2022-11-16 11:06:09,159 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 657 transitions, 10996 flow [2022-11-16 11:06:09,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-16 11:06:09,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-11-16 11:06:09,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 2264 transitions. [2022-11-16 11:06:09,161 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5601187530925285 [2022-11-16 11:06:09,161 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 2264 transitions. [2022-11-16 11:06:09,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 2264 transitions. [2022-11-16 11:06:09,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:06:09,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 2264 transitions. [2022-11-16 11:06:09,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 52.651162790697676) internal successors, (2264), 43 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:09,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 94.0) internal successors, (4136), 44 states have internal predecessors, (4136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:09,165 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 94.0) internal successors, (4136), 44 states have internal predecessors, (4136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:09,165 INFO L175 Difference]: Start difference. First operand has 590 places, 613 transitions, 9119 flow. Second operand 43 states and 2264 transitions. [2022-11-16 11:06:09,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 657 transitions, 10996 flow [2022-11-16 11:06:09,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 578 places, 657 transitions, 10500 flow, removed 57 selfloop flow, removed 46 redundant places. [2022-11-16 11:06:09,459 INFO L231 Difference]: Finished difference. Result has 588 places, 610 transitions, 8958 flow [2022-11-16 11:06:09,459 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8673, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=8958, PETRI_PLACES=588, PETRI_TRANSITIONS=610} [2022-11-16 11:06:09,460 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 500 predicate places. [2022-11-16 11:06:09,460 INFO L495 AbstractCegarLoop]: Abstraction has has 588 places, 610 transitions, 8958 flow [2022-11-16 11:06:09,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:09,460 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:06:09,461 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:09,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-11-16 11:06:09,461 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:06:09,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:09,461 INFO L85 PathProgramCache]: Analyzing trace with hash -539184084, now seen corresponding path program 76 times [2022-11-16 11:06:09,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:09,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507064297] [2022-11-16 11:06:09,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:09,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:09,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:09,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:06:09,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:09,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507064297] [2022-11-16 11:06:09,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507064297] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:09,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:09,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:06:09,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204942153] [2022-11-16 11:06:09,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:09,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:06:09,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:09,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:06:09,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:06:09,974 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:06:09,974 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 588 places, 610 transitions, 8958 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:09,974 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:06:09,974 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:06:09,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:06:11,910 INFO L130 PetriNetUnfolder]: 442/1455 cut-off events. [2022-11-16 11:06:11,910 INFO L131 PetriNetUnfolder]: For 29115/29115 co-relation queries the response was YES. [2022-11-16 11:06:11,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11570 conditions, 1455 events. 442/1455 cut-off events. For 29115/29115 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 10044 event pairs, 44 based on Foata normal form. 1/1453 useless extension candidates. Maximal degree in co-relation 11363. Up to 1012 conditions per place. [2022-11-16 11:06:11,930 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 499 selfloop transitions, 90 changer transitions 22/650 dead transitions. [2022-11-16 11:06:11,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 650 transitions, 10827 flow [2022-11-16 11:06:11,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-16 11:06:11,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-16 11:06:11,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1901 transitions. [2022-11-16 11:06:11,933 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5617612293144209 [2022-11-16 11:06:11,933 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1901 transitions. [2022-11-16 11:06:11,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1901 transitions. [2022-11-16 11:06:11,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:06:11,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1901 transitions. [2022-11-16 11:06:11,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.80555555555556) internal successors, (1901), 36 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:11,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:11,936 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:11,936 INFO L175 Difference]: Start difference. First operand has 588 places, 610 transitions, 8958 flow. Second operand 36 states and 1901 transitions. [2022-11-16 11:06:11,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 650 transitions, 10827 flow [2022-11-16 11:06:12,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 577 places, 650 transitions, 10451 flow, removed 74 selfloop flow, removed 37 redundant places. [2022-11-16 11:06:12,212 INFO L231 Difference]: Finished difference. Result has 588 places, 616 transitions, 9016 flow [2022-11-16 11:06:12,213 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8632, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=9016, PETRI_PLACES=588, PETRI_TRANSITIONS=616} [2022-11-16 11:06:12,213 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 500 predicate places. [2022-11-16 11:06:12,213 INFO L495 AbstractCegarLoop]: Abstraction has has 588 places, 616 transitions, 9016 flow [2022-11-16 11:06:12,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:12,214 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:06:12,214 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:12,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-11-16 11:06:12,214 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:06:12,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:12,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1628501694, now seen corresponding path program 77 times [2022-11-16 11:06:12,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:12,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595302412] [2022-11-16 11:06:12,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:12,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:12,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:06:12,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:12,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595302412] [2022-11-16 11:06:12,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595302412] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:12,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:12,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:06:12,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436967043] [2022-11-16 11:06:12,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:12,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:06:12,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:12,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:06:12,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:06:12,683 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:06:12,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 588 places, 616 transitions, 9016 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:12,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:06:12,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:06:12,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:06:14,560 INFO L130 PetriNetUnfolder]: 442/1449 cut-off events. [2022-11-16 11:06:14,560 INFO L131 PetriNetUnfolder]: For 30247/30247 co-relation queries the response was YES. [2022-11-16 11:06:14,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11685 conditions, 1449 events. 442/1449 cut-off events. For 30247/30247 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 10051 event pairs, 49 based on Foata normal form. 1/1448 useless extension candidates. Maximal degree in co-relation 11475. Up to 969 conditions per place. [2022-11-16 11:06:14,581 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 471 selfloop transitions, 129 changer transitions 16/655 dead transitions. [2022-11-16 11:06:14,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 616 places, 655 transitions, 11012 flow [2022-11-16 11:06:14,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 11:06:14,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 11:06:14,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1858 transitions. [2022-11-16 11:06:14,583 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.564741641337386 [2022-11-16 11:06:14,583 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1858 transitions. [2022-11-16 11:06:14,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1858 transitions. [2022-11-16 11:06:14,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:06:14,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1858 transitions. [2022-11-16 11:06:14,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.08571428571429) internal successors, (1858), 35 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:14,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:14,586 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:14,586 INFO L175 Difference]: Start difference. First operand has 588 places, 616 transitions, 9016 flow. Second operand 35 states and 1858 transitions. [2022-11-16 11:06:14,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 616 places, 655 transitions, 11012 flow [2022-11-16 11:06:14,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 655 transitions, 10689 flow, removed 74 selfloop flow, removed 30 redundant places. [2022-11-16 11:06:15,007 INFO L231 Difference]: Finished difference. Result has 594 places, 627 transitions, 9382 flow [2022-11-16 11:06:15,007 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8719, PETRI_DIFFERENCE_MINUEND_PLACES=552, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=9382, PETRI_PLACES=594, PETRI_TRANSITIONS=627} [2022-11-16 11:06:15,008 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 506 predicate places. [2022-11-16 11:06:15,008 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 627 transitions, 9382 flow [2022-11-16 11:06:15,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:15,008 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:06:15,008 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:15,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-11-16 11:06:15,008 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:06:15,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:15,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1039571604, now seen corresponding path program 78 times [2022-11-16 11:06:15,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:15,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921325292] [2022-11-16 11:06:15,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:15,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:15,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:15,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:06:15,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:15,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921325292] [2022-11-16 11:06:15,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921325292] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:15,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:15,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-16 11:06:15,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377872794] [2022-11-16 11:06:15,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:15,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:06:15,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:15,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:06:15,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:06:15,515 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:06:15,516 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 627 transitions, 9382 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:15,516 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:06:15,516 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:06:15,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:06:17,620 INFO L130 PetriNetUnfolder]: 441/1459 cut-off events. [2022-11-16 11:06:17,620 INFO L131 PetriNetUnfolder]: For 32797/32797 co-relation queries the response was YES. [2022-11-16 11:06:17,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11775 conditions, 1459 events. 441/1459 cut-off events. For 32797/32797 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 10191 event pairs, 50 based on Foata normal form. 1/1457 useless extension candidates. Maximal degree in co-relation 11563. Up to 1017 conditions per place. [2022-11-16 11:06:17,646 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 498 selfloop transitions, 97 changer transitions 19/653 dead transitions. [2022-11-16 11:06:17,647 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 653 transitions, 10853 flow [2022-11-16 11:06:17,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 11:06:17,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 11:06:17,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1842 transitions. [2022-11-16 11:06:17,649 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5598784194528875 [2022-11-16 11:06:17,649 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1842 transitions. [2022-11-16 11:06:17,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1842 transitions. [2022-11-16 11:06:17,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:06:17,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1842 transitions. [2022-11-16 11:06:17,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.628571428571426) internal successors, (1842), 35 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:17,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:17,654 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:17,654 INFO L175 Difference]: Start difference. First operand has 594 places, 627 transitions, 9382 flow. Second operand 35 states and 1842 transitions. [2022-11-16 11:06:17,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 653 transitions, 10853 flow [2022-11-16 11:06:18,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 653 transitions, 10396 flow, removed 149 selfloop flow, removed 25 redundant places. [2022-11-16 11:06:18,173 INFO L231 Difference]: Finished difference. Result has 604 places, 624 transitions, 9125 flow [2022-11-16 11:06:18,173 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8933, PETRI_DIFFERENCE_MINUEND_PLACES=563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=9125, PETRI_PLACES=604, PETRI_TRANSITIONS=624} [2022-11-16 11:06:18,174 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 516 predicate places. [2022-11-16 11:06:18,174 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 624 transitions, 9125 flow [2022-11-16 11:06:18,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:18,174 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:06:18,174 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:18,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-11-16 11:06:18,174 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:06:18,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:18,175 INFO L85 PathProgramCache]: Analyzing trace with hash -879968222, now seen corresponding path program 79 times [2022-11-16 11:06:18,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:18,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809179284] [2022-11-16 11:06:18,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:18,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:18,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:06:18,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:18,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809179284] [2022-11-16 11:06:18,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809179284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:18,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:18,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 11:06:18,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588556154] [2022-11-16 11:06:18,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:18,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 11:06:18,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:18,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 11:06:18,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:06:18,798 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:06:18,799 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 624 transitions, 9125 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:18,799 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:06:18,799 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:06:18,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:06:21,028 INFO L130 PetriNetUnfolder]: 438/1444 cut-off events. [2022-11-16 11:06:21,028 INFO L131 PetriNetUnfolder]: For 31873/31873 co-relation queries the response was YES. [2022-11-16 11:06:21,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11626 conditions, 1444 events. 438/1444 cut-off events. For 31873/31873 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 10025 event pairs, 40 based on Foata normal form. 1/1441 useless extension candidates. Maximal degree in co-relation 11411. Up to 1001 conditions per place. [2022-11-16 11:06:21,045 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 492 selfloop transitions, 100 changer transitions 22/653 dead transitions. [2022-11-16 11:06:21,045 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 633 places, 653 transitions, 10715 flow [2022-11-16 11:06:21,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-16 11:06:21,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-16 11:06:21,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1990 transitions. [2022-11-16 11:06:21,047 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5571108622620381 [2022-11-16 11:06:21,047 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 1990 transitions. [2022-11-16 11:06:21,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 1990 transitions. [2022-11-16 11:06:21,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:06:21,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 1990 transitions. [2022-11-16 11:06:21,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.36842105263158) internal successors, (1990), 38 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:21,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:21,053 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:21,053 INFO L175 Difference]: Start difference. First operand has 604 places, 624 transitions, 9125 flow. Second operand 38 states and 1990 transitions. [2022-11-16 11:06:21,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 633 places, 653 transitions, 10715 flow [2022-11-16 11:06:21,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 598 places, 653 transitions, 10452 flow, removed 13 selfloop flow, removed 35 redundant places. [2022-11-16 11:06:21,576 INFO L231 Difference]: Finished difference. Result has 606 places, 621 transitions, 9118 flow [2022-11-16 11:06:21,577 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8880, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=9118, PETRI_PLACES=606, PETRI_TRANSITIONS=621} [2022-11-16 11:06:21,577 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 518 predicate places. [2022-11-16 11:06:21,577 INFO L495 AbstractCegarLoop]: Abstraction has has 606 places, 621 transitions, 9118 flow [2022-11-16 11:06:21,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:21,577 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:06:21,578 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:21,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-11-16 11:06:21,578 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:06:21,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:21,578 INFO L85 PathProgramCache]: Analyzing trace with hash -2128455458, now seen corresponding path program 80 times [2022-11-16 11:06:21,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:21,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670932745] [2022-11-16 11:06:21,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:21,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:22,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:06:22,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:22,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670932745] [2022-11-16 11:06:22,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670932745] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:22,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:22,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:06:22,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663630587] [2022-11-16 11:06:22,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:22,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:06:22,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:22,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:06:22,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:06:22,063 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:06:22,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 606 places, 621 transitions, 9118 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:22,064 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:06:22,064 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:06:22,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:06:23,881 INFO L130 PetriNetUnfolder]: 436/1422 cut-off events. [2022-11-16 11:06:23,881 INFO L131 PetriNetUnfolder]: For 33285/33285 co-relation queries the response was YES. [2022-11-16 11:06:23,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11686 conditions, 1422 events. 436/1422 cut-off events. For 33285/33285 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 9750 event pairs, 37 based on Foata normal form. 1/1420 useless extension candidates. Maximal degree in co-relation 11470. Up to 958 conditions per place. [2022-11-16 11:06:23,899 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 468 selfloop transitions, 126 changer transitions 21/654 dead transitions. [2022-11-16 11:06:23,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 630 places, 654 transitions, 10921 flow [2022-11-16 11:06:23,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 11:06:23,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-16 11:06:23,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1705 transitions. [2022-11-16 11:06:23,901 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5668218085106383 [2022-11-16 11:06:23,901 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1705 transitions. [2022-11-16 11:06:23,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1705 transitions. [2022-11-16 11:06:23,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:06:23,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1705 transitions. [2022-11-16 11:06:23,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.28125) internal successors, (1705), 32 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:23,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:23,904 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:23,904 INFO L175 Difference]: Start difference. First operand has 606 places, 621 transitions, 9118 flow. Second operand 32 states and 1705 transitions. [2022-11-16 11:06:23,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 630 places, 654 transitions, 10921 flow [2022-11-16 11:06:24,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 654 transitions, 10594 flow, removed 56 selfloop flow, removed 37 redundant places. [2022-11-16 11:06:24,236 INFO L231 Difference]: Finished difference. Result has 600 places, 623 transitions, 9277 flow [2022-11-16 11:06:24,236 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8833, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=9277, PETRI_PLACES=600, PETRI_TRANSITIONS=623} [2022-11-16 11:06:24,237 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 512 predicate places. [2022-11-16 11:06:24,237 INFO L495 AbstractCegarLoop]: Abstraction has has 600 places, 623 transitions, 9277 flow [2022-11-16 11:06:24,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:24,237 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:06:24,237 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:24,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-11-16 11:06:24,237 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:06:24,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:24,238 INFO L85 PathProgramCache]: Analyzing trace with hash -962888412, now seen corresponding path program 81 times [2022-11-16 11:06:24,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:24,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098008233] [2022-11-16 11:06:24,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:24,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:24,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:24,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:06:24,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:24,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098008233] [2022-11-16 11:06:24,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098008233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:24,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:24,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:06:24,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862833302] [2022-11-16 11:06:24,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:24,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:06:24,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:24,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:06:24,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:06:24,698 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:06:24,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 623 transitions, 9277 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:24,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:06:24,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:06:24,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:06:26,734 INFO L130 PetriNetUnfolder]: 433/1410 cut-off events. [2022-11-16 11:06:26,734 INFO L131 PetriNetUnfolder]: For 31965/31965 co-relation queries the response was YES. [2022-11-16 11:06:26,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11563 conditions, 1410 events. 433/1410 cut-off events. For 31965/31965 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 9671 event pairs, 40 based on Foata normal form. 1/1408 useless extension candidates. Maximal degree in co-relation 11348. Up to 1012 conditions per place. [2022-11-16 11:06:26,757 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 507 selfloop transitions, 84 changer transitions 19/649 dead transitions. [2022-11-16 11:06:26,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 649 transitions, 10744 flow [2022-11-16 11:06:26,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 11:06:26,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-16 11:06:26,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1792 transitions. [2022-11-16 11:06:26,760 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5607008760951189 [2022-11-16 11:06:26,760 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1792 transitions. [2022-11-16 11:06:26,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1792 transitions. [2022-11-16 11:06:26,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:06:26,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1792 transitions. [2022-11-16 11:06:26,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.705882352941174) internal successors, (1792), 34 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:26,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:26,763 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:26,763 INFO L175 Difference]: Start difference. First operand has 600 places, 623 transitions, 9277 flow. Second operand 34 states and 1792 transitions. [2022-11-16 11:06:26,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 649 transitions, 10744 flow [2022-11-16 11:06:27,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 649 transitions, 10336 flow, removed 95 selfloop flow, removed 29 redundant places. [2022-11-16 11:06:27,085 INFO L231 Difference]: Finished difference. Result has 604 places, 620 transitions, 9032 flow [2022-11-16 11:06:27,086 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8891, PETRI_DIFFERENCE_MINUEND_PLACES=564, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=9032, PETRI_PLACES=604, PETRI_TRANSITIONS=620} [2022-11-16 11:06:27,086 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 516 predicate places. [2022-11-16 11:06:27,086 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 620 transitions, 9032 flow [2022-11-16 11:06:27,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:27,086 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:06:27,086 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:27,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-11-16 11:06:27,087 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:06:27,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:27,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1810588844, now seen corresponding path program 82 times [2022-11-16 11:06:27,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:27,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611405507] [2022-11-16 11:06:27,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:27,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:27,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:06:27,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:27,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611405507] [2022-11-16 11:06:27,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611405507] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:27,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:27,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 11:06:27,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470305882] [2022-11-16 11:06:27,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:27,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 11:06:27,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:27,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 11:06:27,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:06:27,648 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:06:27,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 620 transitions, 9032 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:27,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:06:27,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:06:27,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:06:29,785 INFO L130 PetriNetUnfolder]: 428/1386 cut-off events. [2022-11-16 11:06:29,785 INFO L131 PetriNetUnfolder]: For 28223/28223 co-relation queries the response was YES. [2022-11-16 11:06:29,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11138 conditions, 1386 events. 428/1386 cut-off events. For 28223/28223 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 9409 event pairs, 50 based on Foata normal form. 1/1384 useless extension candidates. Maximal degree in co-relation 10923. Up to 986 conditions per place. [2022-11-16 11:06:29,802 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 490 selfloop transitions, 72 changer transitions 38/639 dead transitions. [2022-11-16 11:06:29,802 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 630 places, 639 transitions, 10310 flow [2022-11-16 11:06:29,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 11:06:29,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 11:06:29,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1834 transitions. [2022-11-16 11:06:29,804 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5574468085106383 [2022-11-16 11:06:29,804 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1834 transitions. [2022-11-16 11:06:29,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1834 transitions. [2022-11-16 11:06:29,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:06:29,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1834 transitions. [2022-11-16 11:06:29,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.4) internal successors, (1834), 35 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:29,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:29,808 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:29,809 INFO L175 Difference]: Start difference. First operand has 604 places, 620 transitions, 9032 flow. Second operand 35 states and 1834 transitions. [2022-11-16 11:06:29,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 630 places, 639 transitions, 10310 flow [2022-11-16 11:06:30,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 639 transitions, 10066 flow, removed 13 selfloop flow, removed 35 redundant places. [2022-11-16 11:06:30,103 INFO L231 Difference]: Finished difference. Result has 599 places, 592 transitions, 8529 flow [2022-11-16 11:06:30,103 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8794, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=548, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=8529, PETRI_PLACES=599, PETRI_TRANSITIONS=592} [2022-11-16 11:06:30,104 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 511 predicate places. [2022-11-16 11:06:30,104 INFO L495 AbstractCegarLoop]: Abstraction has has 599 places, 592 transitions, 8529 flow [2022-11-16 11:06:30,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:30,104 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:06:30,104 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:30,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-11-16 11:06:30,104 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:06:30,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:30,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1384972958, now seen corresponding path program 83 times [2022-11-16 11:06:30,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:30,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128684134] [2022-11-16 11:06:30,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:30,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:30,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:30,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:06:30,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:30,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128684134] [2022-11-16 11:06:30,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128684134] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:30,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:30,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:06:30,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962463508] [2022-11-16 11:06:30,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:30,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:06:30,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:30,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:06:30,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:06:30,569 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:06:30,570 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 599 places, 592 transitions, 8529 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:30,570 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:06:30,570 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:06:30,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:06:32,459 INFO L130 PetriNetUnfolder]: 424/1365 cut-off events. [2022-11-16 11:06:32,459 INFO L131 PetriNetUnfolder]: For 27183/27183 co-relation queries the response was YES. [2022-11-16 11:06:32,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10802 conditions, 1365 events. 424/1365 cut-off events. For 27183/27183 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 9183 event pairs, 43 based on Foata normal form. 1/1363 useless extension candidates. Maximal degree in co-relation 10592. Up to 945 conditions per place. [2022-11-16 11:06:32,480 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 458 selfloop transitions, 105 changer transitions 19/621 dead transitions. [2022-11-16 11:06:32,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 602 places, 621 transitions, 9960 flow [2022-11-16 11:06:32,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 11:06:32,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 11:06:32,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1850 transitions. [2022-11-16 11:06:32,482 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5623100303951368 [2022-11-16 11:06:32,482 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1850 transitions. [2022-11-16 11:06:32,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1850 transitions. [2022-11-16 11:06:32,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:06:32,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1850 transitions. [2022-11-16 11:06:32,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.857142857142854) internal successors, (1850), 35 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:32,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:32,485 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:32,486 INFO L175 Difference]: Start difference. First operand has 599 places, 592 transitions, 8529 flow. Second operand 35 states and 1850 transitions. [2022-11-16 11:06:32,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 602 places, 621 transitions, 9960 flow [2022-11-16 11:06:32,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 621 transitions, 9575 flow, removed 39 selfloop flow, removed 45 redundant places. [2022-11-16 11:06:32,762 INFO L231 Difference]: Finished difference. Result has 564 places, 589 transitions, 8357 flow [2022-11-16 11:06:32,762 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8158, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=8357, PETRI_PLACES=564, PETRI_TRANSITIONS=589} [2022-11-16 11:06:32,762 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 476 predicate places. [2022-11-16 11:06:32,762 INFO L495 AbstractCegarLoop]: Abstraction has has 564 places, 589 transitions, 8357 flow [2022-11-16 11:06:32,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:32,763 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:06:32,763 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:32,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-11-16 11:06:32,763 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:06:32,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:32,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1947784342, now seen corresponding path program 84 times [2022-11-16 11:06:32,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:32,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326917723] [2022-11-16 11:06:32,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:32,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:32,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:33,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:06:33,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:33,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326917723] [2022-11-16 11:06:33,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326917723] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:33,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:33,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:06:33,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656296892] [2022-11-16 11:06:33,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:33,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:06:33,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:33,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:06:33,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:06:33,227 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:06:33,227 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 564 places, 589 transitions, 8357 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:33,227 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:06:33,227 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:06:33,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:06:35,273 INFO L130 PetriNetUnfolder]: 430/1371 cut-off events. [2022-11-16 11:06:35,274 INFO L131 PetriNetUnfolder]: For 27027/27027 co-relation queries the response was YES. [2022-11-16 11:06:35,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10885 conditions, 1371 events. 430/1371 cut-off events. For 27027/27027 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 9167 event pairs, 52 based on Foata normal form. 1/1369 useless extension candidates. Maximal degree in co-relation 10685. Up to 934 conditions per place. [2022-11-16 11:06:35,294 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 452 selfloop transitions, 118 changer transitions 22/631 dead transitions. [2022-11-16 11:06:35,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 631 transitions, 10197 flow [2022-11-16 11:06:35,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-16 11:06:35,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-16 11:06:35,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2008 transitions. [2022-11-16 11:06:35,297 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5621500559910414 [2022-11-16 11:06:35,363 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2008 transitions. [2022-11-16 11:06:35,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2008 transitions. [2022-11-16 11:06:35,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:06:35,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2008 transitions. [2022-11-16 11:06:35,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.8421052631579) internal successors, (2008), 38 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:35,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:35,369 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:35,369 INFO L175 Difference]: Start difference. First operand has 564 places, 589 transitions, 8357 flow. Second operand 38 states and 2008 transitions. [2022-11-16 11:06:35,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 631 transitions, 10197 flow [2022-11-16 11:06:35,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 558 places, 631 transitions, 9903 flow, removed 24 selfloop flow, removed 35 redundant places. [2022-11-16 11:06:35,659 INFO L231 Difference]: Finished difference. Result has 569 places, 594 transitions, 8551 flow [2022-11-16 11:06:35,659 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8087, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8551, PETRI_PLACES=569, PETRI_TRANSITIONS=594} [2022-11-16 11:06:35,659 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 481 predicate places. [2022-11-16 11:06:35,659 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 594 transitions, 8551 flow [2022-11-16 11:06:35,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:35,660 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:06:35,660 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:35,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-11-16 11:06:35,660 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:06:35,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:35,661 INFO L85 PathProgramCache]: Analyzing trace with hash -657749404, now seen corresponding path program 85 times [2022-11-16 11:06:35,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:35,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424791688] [2022-11-16 11:06:35,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:35,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:35,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:36,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:06:36,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:36,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424791688] [2022-11-16 11:06:36,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424791688] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:36,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:36,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:06:36,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666892526] [2022-11-16 11:06:36,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:36,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:06:36,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:36,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:06:36,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:06:36,152 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:06:36,153 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 594 transitions, 8551 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:36,153 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:06:36,153 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:06:36,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:06:38,219 INFO L130 PetriNetUnfolder]: 423/1376 cut-off events. [2022-11-16 11:06:38,219 INFO L131 PetriNetUnfolder]: For 27670/27670 co-relation queries the response was YES. [2022-11-16 11:06:38,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10859 conditions, 1376 events. 423/1376 cut-off events. For 27670/27670 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 9309 event pairs, 51 based on Foata normal form. 1/1374 useless extension candidates. Maximal degree in co-relation 10656. Up to 946 conditions per place. [2022-11-16 11:06:38,238 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 456 selfloop transitions, 109 changer transitions 19/623 dead transitions. [2022-11-16 11:06:38,238 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 598 places, 623 transitions, 9990 flow [2022-11-16 11:06:38,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-16 11:06:38,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-16 11:06:38,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1899 transitions. [2022-11-16 11:06:38,241 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5611702127659575 [2022-11-16 11:06:38,241 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1899 transitions. [2022-11-16 11:06:38,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1899 transitions. [2022-11-16 11:06:38,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:06:38,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1899 transitions. [2022-11-16 11:06:38,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.75) internal successors, (1899), 36 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:38,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:38,245 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:38,245 INFO L175 Difference]: Start difference. First operand has 569 places, 594 transitions, 8551 flow. Second operand 36 states and 1899 transitions. [2022-11-16 11:06:38,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 598 places, 623 transitions, 9990 flow [2022-11-16 11:06:38,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 567 places, 623 transitions, 9750 flow, removed 49 selfloop flow, removed 31 redundant places. [2022-11-16 11:06:38,512 INFO L231 Difference]: Finished difference. Result has 574 places, 591 transitions, 8529 flow [2022-11-16 11:06:38,513 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8319, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=8529, PETRI_PLACES=574, PETRI_TRANSITIONS=591} [2022-11-16 11:06:38,513 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 486 predicate places. [2022-11-16 11:06:38,513 INFO L495 AbstractCegarLoop]: Abstraction has has 574 places, 591 transitions, 8529 flow [2022-11-16 11:06:38,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:38,514 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:06:38,514 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:38,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-11-16 11:06:38,514 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:06:38,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:38,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1869742924, now seen corresponding path program 86 times [2022-11-16 11:06:38,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:38,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667958240] [2022-11-16 11:06:38,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:38,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:38,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:39,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:06:39,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:39,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667958240] [2022-11-16 11:06:39,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667958240] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:39,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:39,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:06:39,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212931106] [2022-11-16 11:06:39,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:39,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:06:39,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:39,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:06:39,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:06:39,070 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:06:39,071 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 591 transitions, 8529 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:39,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:06:39,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:06:39,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:06:40,936 INFO L130 PetriNetUnfolder]: 422/1381 cut-off events. [2022-11-16 11:06:40,936 INFO L131 PetriNetUnfolder]: For 28764/28764 co-relation queries the response was YES. [2022-11-16 11:06:40,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10967 conditions, 1381 events. 422/1381 cut-off events. For 28764/28764 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 9357 event pairs, 42 based on Foata normal form. 1/1379 useless extension candidates. Maximal degree in co-relation 10762. Up to 892 conditions per place. [2022-11-16 11:06:40,957 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 431 selfloop transitions, 146 changer transitions 23/639 dead transitions. [2022-11-16 11:06:40,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 599 places, 639 transitions, 10493 flow [2022-11-16 11:06:40,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 11:06:40,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-16 11:06:40,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1804 transitions. [2022-11-16 11:06:40,959 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5644555694618273 [2022-11-16 11:06:40,959 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1804 transitions. [2022-11-16 11:06:40,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1804 transitions. [2022-11-16 11:06:40,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:06:40,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1804 transitions. [2022-11-16 11:06:40,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.05882352941177) internal successors, (1804), 34 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:40,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:40,964 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:40,964 INFO L175 Difference]: Start difference. First operand has 574 places, 591 transitions, 8529 flow. Second operand 34 states and 1804 transitions. [2022-11-16 11:06:40,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 599 places, 639 transitions, 10493 flow [2022-11-16 11:06:41,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 639 transitions, 10144 flow, removed 17 selfloop flow, removed 38 redundant places. [2022-11-16 11:06:41,273 INFO L231 Difference]: Finished difference. Result has 568 places, 598 transitions, 8751 flow [2022-11-16 11:06:41,274 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8203, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=8751, PETRI_PLACES=568, PETRI_TRANSITIONS=598} [2022-11-16 11:06:41,274 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 480 predicate places. [2022-11-16 11:06:41,274 INFO L495 AbstractCegarLoop]: Abstraction has has 568 places, 598 transitions, 8751 flow [2022-11-16 11:06:41,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:41,274 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:06:41,274 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:41,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-11-16 11:06:41,275 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:06:41,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:41,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1734526900, now seen corresponding path program 87 times [2022-11-16 11:06:41,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:41,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349272334] [2022-11-16 11:06:41,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:41,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:41,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:41,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:06:41,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:41,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349272334] [2022-11-16 11:06:41,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349272334] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:41,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:41,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:06:41,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55208788] [2022-11-16 11:06:41,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:41,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:06:41,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:41,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:06:41,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:06:41,798 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:06:41,799 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 598 transitions, 8751 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:41,799 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:06:41,799 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:06:41,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:06:43,687 INFO L130 PetriNetUnfolder]: 423/1353 cut-off events. [2022-11-16 11:06:43,688 INFO L131 PetriNetUnfolder]: For 29665/29665 co-relation queries the response was YES. [2022-11-16 11:06:43,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10983 conditions, 1353 events. 423/1353 cut-off events. For 29665/29665 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 9025 event pairs, 51 based on Foata normal form. 1/1351 useless extension candidates. Maximal degree in co-relation 10780. Up to 882 conditions per place. [2022-11-16 11:06:43,707 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 428 selfloop transitions, 149 changer transitions 21/637 dead transitions. [2022-11-16 11:06:43,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 597 places, 637 transitions, 10553 flow [2022-11-16 11:06:43,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 11:06:43,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 11:06:43,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1858 transitions. [2022-11-16 11:06:43,709 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.564741641337386 [2022-11-16 11:06:43,709 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1858 transitions. [2022-11-16 11:06:43,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1858 transitions. [2022-11-16 11:06:43,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:06:43,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1858 transitions. [2022-11-16 11:06:43,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.08571428571429) internal successors, (1858), 35 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:43,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:43,715 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:43,715 INFO L175 Difference]: Start difference. First operand has 568 places, 598 transitions, 8751 flow. Second operand 35 states and 1858 transitions. [2022-11-16 11:06:43,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 597 places, 637 transitions, 10553 flow [2022-11-16 11:06:44,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 637 transitions, 10166 flow, removed 104 selfloop flow, removed 28 redundant places. [2022-11-16 11:06:44,021 INFO L231 Difference]: Finished difference. Result has 576 places, 599 transitions, 8843 flow [2022-11-16 11:06:44,022 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8428, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=8843, PETRI_PLACES=576, PETRI_TRANSITIONS=599} [2022-11-16 11:06:44,022 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 488 predicate places. [2022-11-16 11:06:44,022 INFO L495 AbstractCegarLoop]: Abstraction has has 576 places, 599 transitions, 8843 flow [2022-11-16 11:06:44,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:44,022 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:06:44,023 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:44,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-11-16 11:06:44,023 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:06:44,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:44,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1299867540, now seen corresponding path program 88 times [2022-11-16 11:06:44,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:44,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914392160] [2022-11-16 11:06:44,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:44,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:44,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:44,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:06:44,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:44,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914392160] [2022-11-16 11:06:44,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914392160] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:44,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:44,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:06:44,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512760698] [2022-11-16 11:06:44,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:44,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:06:44,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:44,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:06:44,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:06:44,506 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:06:44,506 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 576 places, 599 transitions, 8843 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:44,507 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:06:44,507 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:06:44,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:06:46,596 INFO L130 PetriNetUnfolder]: 417/1336 cut-off events. [2022-11-16 11:06:46,597 INFO L131 PetriNetUnfolder]: For 27140/27140 co-relation queries the response was YES. [2022-11-16 11:06:46,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10715 conditions, 1336 events. 417/1336 cut-off events. For 27140/27140 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 8819 event pairs, 40 based on Foata normal form. 1/1333 useless extension candidates. Maximal degree in co-relation 10510. Up to 852 conditions per place. [2022-11-16 11:06:46,684 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 409 selfloop transitions, 139 changer transitions 43/630 dead transitions. [2022-11-16 11:06:46,684 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 608 places, 630 transitions, 10308 flow [2022-11-16 11:06:46,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-16 11:06:46,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-16 11:06:46,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2006 transitions. [2022-11-16 11:06:46,687 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5615901455767077 [2022-11-16 11:06:46,687 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2006 transitions. [2022-11-16 11:06:46,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2006 transitions. [2022-11-16 11:06:46,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:06:46,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2006 transitions. [2022-11-16 11:06:46,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.78947368421053) internal successors, (2006), 38 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:46,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:46,691 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:46,691 INFO L175 Difference]: Start difference. First operand has 576 places, 599 transitions, 8843 flow. Second operand 38 states and 2006 transitions. [2022-11-16 11:06:46,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 608 places, 630 transitions, 10308 flow [2022-11-16 11:06:46,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 574 places, 630 transitions, 9983 flow, removed 45 selfloop flow, removed 34 redundant places. [2022-11-16 11:06:46,987 INFO L231 Difference]: Finished difference. Result has 582 places, 571 transitions, 8437 flow [2022-11-16 11:06:46,987 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8532, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8437, PETRI_PLACES=582, PETRI_TRANSITIONS=571} [2022-11-16 11:06:46,987 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 494 predicate places. [2022-11-16 11:06:46,988 INFO L495 AbstractCegarLoop]: Abstraction has has 582 places, 571 transitions, 8437 flow [2022-11-16 11:06:46,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:46,988 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:06:46,988 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:46,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-11-16 11:06:46,988 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:06:46,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:46,988 INFO L85 PathProgramCache]: Analyzing trace with hash 310374354, now seen corresponding path program 89 times [2022-11-16 11:06:46,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:46,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310725269] [2022-11-16 11:06:46,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:46,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:47,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:47,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:06:47,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:47,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310725269] [2022-11-16 11:06:47,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310725269] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:47,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:47,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:06:47,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723185716] [2022-11-16 11:06:47,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:47,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:06:47,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:47,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:06:47,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:06:47,438 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:06:47,439 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 571 transitions, 8437 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:47,439 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:06:47,439 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:06:47,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:06:49,312 INFO L130 PetriNetUnfolder]: 405/1314 cut-off events. [2022-11-16 11:06:49,312 INFO L131 PetriNetUnfolder]: For 27360/27360 co-relation queries the response was YES. [2022-11-16 11:06:49,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10685 conditions, 1314 events. 405/1314 cut-off events. For 27360/27360 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 8723 event pairs, 43 based on Foata normal form. 1/1313 useless extension candidates. Maximal degree in co-relation 10480. Up to 881 conditions per place. [2022-11-16 11:06:49,331 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 434 selfloop transitions, 109 changer transitions 23/605 dead transitions. [2022-11-16 11:06:49,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 603 places, 605 transitions, 10095 flow [2022-11-16 11:06:49,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 11:06:49,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-16 11:06:49,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1755 transitions. [2022-11-16 11:06:49,334 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5657640232108317 [2022-11-16 11:06:49,334 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1755 transitions. [2022-11-16 11:06:49,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1755 transitions. [2022-11-16 11:06:49,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:06:49,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1755 transitions. [2022-11-16 11:06:49,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.18181818181818) internal successors, (1755), 33 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:49,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:49,337 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:49,337 INFO L175 Difference]: Start difference. First operand has 582 places, 571 transitions, 8437 flow. Second operand 33 states and 1755 transitions. [2022-11-16 11:06:49,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 603 places, 605 transitions, 10095 flow [2022-11-16 11:06:49,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 605 transitions, 9570 flow, removed 72 selfloop flow, removed 43 redundant places. [2022-11-16 11:06:49,643 INFO L231 Difference]: Finished difference. Result has 567 places, 571 transitions, 8267 flow [2022-11-16 11:06:49,644 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7934, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=8267, PETRI_PLACES=567, PETRI_TRANSITIONS=571} [2022-11-16 11:06:49,644 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 479 predicate places. [2022-11-16 11:06:49,644 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 571 transitions, 8267 flow [2022-11-16 11:06:49,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:49,645 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:06:49,645 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:49,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-11-16 11:06:49,645 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:06:49,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:49,645 INFO L85 PathProgramCache]: Analyzing trace with hash -596217238, now seen corresponding path program 90 times [2022-11-16 11:06:49,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:49,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109730265] [2022-11-16 11:06:49,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:49,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:49,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:50,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:06:50,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:50,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109730265] [2022-11-16 11:06:50,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109730265] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:50,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:50,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-16 11:06:50,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995334177] [2022-11-16 11:06:50,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:50,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:06:50,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:50,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:06:50,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:06:50,250 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:06:50,251 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 571 transitions, 8267 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:50,251 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:06:50,251 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:06:50,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:06:52,656 INFO L130 PetriNetUnfolder]: 407/1309 cut-off events. [2022-11-16 11:06:52,656 INFO L131 PetriNetUnfolder]: For 29227/29227 co-relation queries the response was YES. [2022-11-16 11:06:52,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10672 conditions, 1309 events. 407/1309 cut-off events. For 29227/29227 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 8664 event pairs, 36 based on Foata normal form. 1/1309 useless extension candidates. Maximal degree in co-relation 10472. Up to 832 conditions per place. [2022-11-16 11:06:52,678 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 378 selfloop transitions, 175 changer transitions 22/614 dead transitions. [2022-11-16 11:06:52,678 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 608 places, 614 transitions, 10149 flow [2022-11-16 11:06:52,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-16 11:06:52,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-11-16 11:06:52,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 2465 transitions. [2022-11-16 11:06:52,681 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5579447713897692 [2022-11-16 11:06:52,681 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 2465 transitions. [2022-11-16 11:06:52,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 2465 transitions. [2022-11-16 11:06:52,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:06:52,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 2465 transitions. [2022-11-16 11:06:52,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 52.4468085106383) internal successors, (2465), 47 states have internal predecessors, (2465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:52,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 94.0) internal successors, (4512), 48 states have internal predecessors, (4512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:52,687 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 94.0) internal successors, (4512), 48 states have internal predecessors, (4512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:52,687 INFO L175 Difference]: Start difference. First operand has 567 places, 571 transitions, 8267 flow. Second operand 47 states and 2465 transitions. [2022-11-16 11:06:52,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 608 places, 614 transitions, 10149 flow [2022-11-16 11:06:52,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 614 transitions, 9849 flow, removed 57 selfloop flow, removed 32 redundant places. [2022-11-16 11:06:52,995 INFO L231 Difference]: Finished difference. Result has 587 places, 577 transitions, 8648 flow [2022-11-16 11:06:52,995 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7995, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=8648, PETRI_PLACES=587, PETRI_TRANSITIONS=577} [2022-11-16 11:06:52,996 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 499 predicate places. [2022-11-16 11:06:52,996 INFO L495 AbstractCegarLoop]: Abstraction has has 587 places, 577 transitions, 8648 flow [2022-11-16 11:06:52,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:52,996 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:06:52,996 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:52,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-11-16 11:06:52,996 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:06:52,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:52,997 INFO L85 PathProgramCache]: Analyzing trace with hash 618312006, now seen corresponding path program 91 times [2022-11-16 11:06:52,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:52,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252089098] [2022-11-16 11:06:52,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:52,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:53,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:53,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:06:53,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:53,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252089098] [2022-11-16 11:06:53,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252089098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:53,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:53,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-16 11:06:53,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970774729] [2022-11-16 11:06:53,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:53,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:06:53,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:53,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:06:53,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:06:53,572 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:06:53,573 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 577 transitions, 8648 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:53,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:06:53,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:06:53,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:06:56,008 INFO L130 PetriNetUnfolder]: 401/1301 cut-off events. [2022-11-16 11:06:56,009 INFO L131 PetriNetUnfolder]: For 28464/28464 co-relation queries the response was YES. [2022-11-16 11:06:56,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10723 conditions, 1301 events. 401/1301 cut-off events. For 28464/28464 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 8645 event pairs, 43 based on Foata normal form. 1/1300 useless extension candidates. Maximal degree in co-relation 10520. Up to 851 conditions per place. [2022-11-16 11:06:56,025 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 389 selfloop transitions, 158 changer transitions 22/608 dead transitions. [2022-11-16 11:06:56,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 625 places, 608 transitions, 10098 flow [2022-11-16 11:06:56,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-16 11:06:56,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-16 11:06:56,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 2358 transitions. [2022-11-16 11:06:56,028 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5574468085106383 [2022-11-16 11:06:56,028 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 2358 transitions. [2022-11-16 11:06:56,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 2358 transitions. [2022-11-16 11:06:56,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:06:56,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 2358 transitions. [2022-11-16 11:06:56,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 52.4) internal successors, (2358), 45 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:56,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 94.0) internal successors, (4324), 46 states have internal predecessors, (4324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:56,032 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 94.0) internal successors, (4324), 46 states have internal predecessors, (4324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:56,032 INFO L175 Difference]: Start difference. First operand has 587 places, 577 transitions, 8648 flow. Second operand 45 states and 2358 transitions. [2022-11-16 11:06:56,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 625 places, 608 transitions, 10098 flow [2022-11-16 11:06:56,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 585 places, 608 transitions, 9771 flow, removed 60 selfloop flow, removed 40 redundant places. [2022-11-16 11:06:56,329 INFO L231 Difference]: Finished difference. Result has 592 places, 572 transitions, 8653 flow [2022-11-16 11:06:56,329 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8338, PETRI_DIFFERENCE_MINUEND_PLACES=541, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=8653, PETRI_PLACES=592, PETRI_TRANSITIONS=572} [2022-11-16 11:06:56,329 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 504 predicate places. [2022-11-16 11:06:56,329 INFO L495 AbstractCegarLoop]: Abstraction has has 592 places, 572 transitions, 8653 flow [2022-11-16 11:06:56,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:56,330 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:06:56,330 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:56,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-11-16 11:06:56,330 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:06:56,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:56,330 INFO L85 PathProgramCache]: Analyzing trace with hash 944180584, now seen corresponding path program 92 times [2022-11-16 11:06:56,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:56,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052647244] [2022-11-16 11:06:56,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:56,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:56,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:56,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:06:56,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:56,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052647244] [2022-11-16 11:06:56,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052647244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:56,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:56,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:06:56,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963614336] [2022-11-16 11:06:56,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:56,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:06:56,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:56,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:06:56,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:06:56,841 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:06:56,842 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 592 places, 572 transitions, 8653 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:56,842 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:06:56,842 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:06:56,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:06:59,118 INFO L130 PetriNetUnfolder]: 406/1315 cut-off events. [2022-11-16 11:06:59,118 INFO L131 PetriNetUnfolder]: For 29971/29971 co-relation queries the response was YES. [2022-11-16 11:06:59,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11020 conditions, 1315 events. 406/1315 cut-off events. For 29971/29971 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 8742 event pairs, 42 based on Foata normal form. 1/1314 useless extension candidates. Maximal degree in co-relation 10815. Up to 757 conditions per place. [2022-11-16 11:06:59,137 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 334 selfloop transitions, 230 changer transitions 21/624 dead transitions. [2022-11-16 11:06:59,138 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 628 places, 624 transitions, 10807 flow [2022-11-16 11:06:59,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-16 11:06:59,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-11-16 11:06:59,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 2423 transitions. [2022-11-16 11:06:59,140 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5603607770582794 [2022-11-16 11:06:59,141 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 2423 transitions. [2022-11-16 11:06:59,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 2423 transitions. [2022-11-16 11:06:59,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:06:59,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 2423 transitions. [2022-11-16 11:06:59,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 52.67391304347826) internal successors, (2423), 46 states have internal predecessors, (2423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:59,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 94.0) internal successors, (4418), 47 states have internal predecessors, (4418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:59,145 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 94.0) internal successors, (4418), 47 states have internal predecessors, (4418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:59,145 INFO L175 Difference]: Start difference. First operand has 592 places, 572 transitions, 8653 flow. Second operand 46 states and 2423 transitions. [2022-11-16 11:06:59,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 628 places, 624 transitions, 10807 flow [2022-11-16 11:06:59,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 582 places, 624 transitions, 10327 flow, removed 24 selfloop flow, removed 46 redundant places. [2022-11-16 11:06:59,458 INFO L231 Difference]: Finished difference. Result has 591 places, 582 transitions, 9124 flow [2022-11-16 11:06:59,459 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8208, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=9124, PETRI_PLACES=591, PETRI_TRANSITIONS=582} [2022-11-16 11:06:59,459 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 503 predicate places. [2022-11-16 11:06:59,459 INFO L495 AbstractCegarLoop]: Abstraction has has 591 places, 582 transitions, 9124 flow [2022-11-16 11:06:59,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:59,460 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:06:59,460 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:59,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-11-16 11:06:59,460 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:06:59,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:59,461 INFO L85 PathProgramCache]: Analyzing trace with hash 196111776, now seen corresponding path program 93 times [2022-11-16 11:06:59,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:59,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515770173] [2022-11-16 11:06:59,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:59,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:59,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:59,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:06:59,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:59,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515770173] [2022-11-16 11:06:59,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515770173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:59,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:59,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:06:59,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13707756] [2022-11-16 11:06:59,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:59,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:06:59,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:59,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:06:59,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:06:59,978 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:06:59,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 582 transitions, 9124 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:59,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:06:59,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:06:59,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:07:02,248 INFO L130 PetriNetUnfolder]: 401/1315 cut-off events. [2022-11-16 11:07:02,248 INFO L131 PetriNetUnfolder]: For 30550/30550 co-relation queries the response was YES. [2022-11-16 11:07:02,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11064 conditions, 1315 events. 401/1315 cut-off events. For 30550/30550 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 8832 event pairs, 40 based on Foata normal form. 1/1314 useless extension candidates. Maximal degree in co-relation 10859. Up to 790 conditions per place. [2022-11-16 11:07:02,267 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 359 selfloop transitions, 193 changer transitions 27/618 dead transitions. [2022-11-16 11:07:02,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 627 places, 618 transitions, 10720 flow [2022-11-16 11:07:02,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-16 11:07:02,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-11-16 11:07:02,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 2264 transitions. [2022-11-16 11:07:02,270 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5601187530925285 [2022-11-16 11:07:02,270 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 2264 transitions. [2022-11-16 11:07:02,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 2264 transitions. [2022-11-16 11:07:02,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:07:02,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 2264 transitions. [2022-11-16 11:07:02,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 52.651162790697676) internal successors, (2264), 43 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:02,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 94.0) internal successors, (4136), 44 states have internal predecessors, (4136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:02,275 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 94.0) internal successors, (4136), 44 states have internal predecessors, (4136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:02,275 INFO L175 Difference]: Start difference. First operand has 591 places, 582 transitions, 9124 flow. Second operand 43 states and 2264 transitions. [2022-11-16 11:07:02,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 627 places, 618 transitions, 10720 flow [2022-11-16 11:07:02,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 618 transitions, 10248 flow, removed 127 selfloop flow, removed 34 redundant places. [2022-11-16 11:07:02,630 INFO L231 Difference]: Finished difference. Result has 600 places, 574 transitions, 9102 flow [2022-11-16 11:07:02,631 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8684, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=9102, PETRI_PLACES=600, PETRI_TRANSITIONS=574} [2022-11-16 11:07:02,631 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 512 predicate places. [2022-11-16 11:07:02,631 INFO L495 AbstractCegarLoop]: Abstraction has has 600 places, 574 transitions, 9102 flow [2022-11-16 11:07:02,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:02,631 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:07:02,632 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:02,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-11-16 11:07:02,632 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:07:02,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:02,632 INFO L85 PathProgramCache]: Analyzing trace with hash 984579434, now seen corresponding path program 94 times [2022-11-16 11:07:02,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:02,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516317430] [2022-11-16 11:07:02,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:02,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:02,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:03,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:07:03,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:03,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516317430] [2022-11-16 11:07:03,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516317430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:03,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:03,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:07:03,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611120456] [2022-11-16 11:07:03,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:03,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:07:03,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:03,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:07:03,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:07:03,138 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:07:03,138 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 574 transitions, 9102 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:03,139 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:07:03,139 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:07:03,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:07:05,224 INFO L130 PetriNetUnfolder]: 414/1351 cut-off events. [2022-11-16 11:07:05,224 INFO L131 PetriNetUnfolder]: For 31190/31190 co-relation queries the response was YES. [2022-11-16 11:07:05,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11452 conditions, 1351 events. 414/1351 cut-off events. For 31190/31190 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 9089 event pairs, 42 based on Foata normal form. 1/1350 useless extension candidates. Maximal degree in co-relation 11244. Up to 830 conditions per place. [2022-11-16 11:07:05,245 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 406 selfloop transitions, 187 changer transitions 26/658 dead transitions. [2022-11-16 11:07:05,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 629 places, 658 transitions, 11643 flow [2022-11-16 11:07:05,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-16 11:07:05,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-16 11:07:05,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 2161 transitions. [2022-11-16 11:07:05,248 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5607161390762844 [2022-11-16 11:07:05,248 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 2161 transitions. [2022-11-16 11:07:05,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 2161 transitions. [2022-11-16 11:07:05,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:07:05,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 2161 transitions. [2022-11-16 11:07:05,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 52.707317073170735) internal successors, (2161), 41 states have internal predecessors, (2161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:05,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:05,252 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:05,252 INFO L175 Difference]: Start difference. First operand has 600 places, 574 transitions, 9102 flow. Second operand 41 states and 2161 transitions. [2022-11-16 11:07:05,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 629 places, 658 transitions, 11643 flow [2022-11-16 11:07:05,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 658 transitions, 11124 flow, removed 18 selfloop flow, removed 43 redundant places. [2022-11-16 11:07:05,585 INFO L231 Difference]: Finished difference. Result has 595 places, 607 transitions, 9690 flow [2022-11-16 11:07:05,585 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8619, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=9690, PETRI_PLACES=595, PETRI_TRANSITIONS=607} [2022-11-16 11:07:05,585 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 507 predicate places. [2022-11-16 11:07:05,586 INFO L495 AbstractCegarLoop]: Abstraction has has 595 places, 607 transitions, 9690 flow [2022-11-16 11:07:05,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:05,586 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:07:05,586 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:05,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-11-16 11:07:05,586 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:07:05,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:05,586 INFO L85 PathProgramCache]: Analyzing trace with hash -2093638478, now seen corresponding path program 95 times [2022-11-16 11:07:05,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:05,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25294165] [2022-11-16 11:07:05,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:05,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:05,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:06,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:07:06,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:06,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25294165] [2022-11-16 11:07:06,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25294165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:06,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:06,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:07:06,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799018719] [2022-11-16 11:07:06,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:06,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:07:06,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:06,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:07:06,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:07:06,135 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:07:06,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 607 transitions, 9690 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:06,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:07:06,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:07:06,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:07:08,273 INFO L130 PetriNetUnfolder]: 406/1333 cut-off events. [2022-11-16 11:07:08,273 INFO L131 PetriNetUnfolder]: For 31788/31788 co-relation queries the response was YES. [2022-11-16 11:07:08,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11324 conditions, 1333 events. 406/1333 cut-off events. For 31788/31788 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 8956 event pairs, 51 based on Foata normal form. 1/1332 useless extension candidates. Maximal degree in co-relation 11116. Up to 927 conditions per place. [2022-11-16 11:07:08,289 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 474 selfloop transitions, 106 changer transitions 20/639 dead transitions. [2022-11-16 11:07:08,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 639 transitions, 11196 flow [2022-11-16 11:07:08,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-16 11:07:08,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-16 11:07:08,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1946 transitions. [2022-11-16 11:07:08,292 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5595169637722829 [2022-11-16 11:07:08,292 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1946 transitions. [2022-11-16 11:07:08,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1946 transitions. [2022-11-16 11:07:08,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:07:08,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1946 transitions. [2022-11-16 11:07:08,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.5945945945946) internal successors, (1946), 37 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:08,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:08,296 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:08,296 INFO L175 Difference]: Start difference. First operand has 595 places, 607 transitions, 9690 flow. Second operand 37 states and 1946 transitions. [2022-11-16 11:07:08,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 639 transitions, 11196 flow [2022-11-16 11:07:08,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 639 transitions, 10878 flow, removed 86 selfloop flow, removed 30 redundant places. [2022-11-16 11:07:08,628 INFO L231 Difference]: Finished difference. Result has 604 places, 606 transitions, 9596 flow [2022-11-16 11:07:08,629 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9385, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=9596, PETRI_PLACES=604, PETRI_TRANSITIONS=606} [2022-11-16 11:07:08,629 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 516 predicate places. [2022-11-16 11:07:08,629 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 606 transitions, 9596 flow [2022-11-16 11:07:08,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:08,630 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:07:08,631 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:08,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-11-16 11:07:08,631 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:07:08,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:08,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1715818286, now seen corresponding path program 96 times [2022-11-16 11:07:08,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:08,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556826895] [2022-11-16 11:07:08,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:08,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:08,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:09,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:07:09,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:09,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556826895] [2022-11-16 11:07:09,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556826895] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:09,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:09,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-16 11:07:09,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051204773] [2022-11-16 11:07:09,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:09,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:07:09,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:09,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:07:09,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:07:09,152 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:07:09,153 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 606 transitions, 9596 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:09,153 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:07:09,153 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:07:09,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:07:11,257 INFO L130 PetriNetUnfolder]: 402/1327 cut-off events. [2022-11-16 11:07:11,258 INFO L131 PetriNetUnfolder]: For 29276/29276 co-relation queries the response was YES. [2022-11-16 11:07:11,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11164 conditions, 1327 events. 402/1327 cut-off events. For 29276/29276 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 8926 event pairs, 50 based on Foata normal form. 1/1326 useless extension candidates. Maximal degree in co-relation 10951. Up to 932 conditions per place. [2022-11-16 11:07:11,277 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 478 selfloop transitions, 96 changer transitions 18/631 dead transitions. [2022-11-16 11:07:11,277 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 633 places, 631 transitions, 10990 flow [2022-11-16 11:07:11,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-16 11:07:11,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-16 11:07:11,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1893 transitions. [2022-11-16 11:07:11,279 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5593971631205674 [2022-11-16 11:07:11,280 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1893 transitions. [2022-11-16 11:07:11,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1893 transitions. [2022-11-16 11:07:11,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:07:11,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1893 transitions. [2022-11-16 11:07:11,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.583333333333336) internal successors, (1893), 36 states have internal predecessors, (1893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:11,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:11,283 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:11,283 INFO L175 Difference]: Start difference. First operand has 604 places, 606 transitions, 9596 flow. Second operand 36 states and 1893 transitions. [2022-11-16 11:07:11,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 633 places, 631 transitions, 10990 flow [2022-11-16 11:07:11,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 631 transitions, 10715 flow, removed 32 selfloop flow, removed 36 redundant places. [2022-11-16 11:07:11,619 INFO L231 Difference]: Finished difference. Result has 605 places, 603 transitions, 9520 flow [2022-11-16 11:07:11,619 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9337, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=9520, PETRI_PLACES=605, PETRI_TRANSITIONS=603} [2022-11-16 11:07:11,619 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 517 predicate places. [2022-11-16 11:07:11,619 INFO L495 AbstractCegarLoop]: Abstraction has has 605 places, 603 transitions, 9520 flow [2022-11-16 11:07:11,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:11,620 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:07:11,620 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:11,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-11-16 11:07:11,620 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:07:11,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:11,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1752975368, now seen corresponding path program 97 times [2022-11-16 11:07:11,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:11,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941025162] [2022-11-16 11:07:11,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:11,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:11,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:12,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:07:12,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:12,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941025162] [2022-11-16 11:07:12,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941025162] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:12,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:12,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-16 11:07:12,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135556061] [2022-11-16 11:07:12,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:12,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:07:12,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:12,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:07:12,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:07:12,159 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:07:12,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 605 places, 603 transitions, 9520 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:12,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:07:12,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:07:12,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:07:14,159 INFO L130 PetriNetUnfolder]: 400/1329 cut-off events. [2022-11-16 11:07:14,160 INFO L131 PetriNetUnfolder]: For 29544/29544 co-relation queries the response was YES. [2022-11-16 11:07:14,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11179 conditions, 1329 events. 400/1329 cut-off events. For 29544/29544 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 8946 event pairs, 40 based on Foata normal form. 1/1328 useless extension candidates. Maximal degree in co-relation 10965. Up to 951 conditions per place. [2022-11-16 11:07:14,181 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 487 selfloop transitions, 89 changer transitions 17/632 dead transitions. [2022-11-16 11:07:14,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 636 places, 632 transitions, 11018 flow [2022-11-16 11:07:14,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-16 11:07:14,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-16 11:07:14,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1991 transitions. [2022-11-16 11:07:14,183 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5573908174692049 [2022-11-16 11:07:14,183 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 1991 transitions. [2022-11-16 11:07:14,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 1991 transitions. [2022-11-16 11:07:14,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:07:14,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 1991 transitions. [2022-11-16 11:07:14,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.39473684210526) internal successors, (1991), 38 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:14,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:14,187 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:14,187 INFO L175 Difference]: Start difference. First operand has 605 places, 603 transitions, 9520 flow. Second operand 38 states and 1991 transitions. [2022-11-16 11:07:14,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 636 places, 632 transitions, 11018 flow [2022-11-16 11:07:14,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 601 places, 632 transitions, 10775 flow, removed 25 selfloop flow, removed 35 redundant places. [2022-11-16 11:07:14,537 INFO L231 Difference]: Finished difference. Result has 608 places, 605 transitions, 9575 flow [2022-11-16 11:07:14,538 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9301, PETRI_DIFFERENCE_MINUEND_PLACES=564, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=9575, PETRI_PLACES=608, PETRI_TRANSITIONS=605} [2022-11-16 11:07:14,538 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 520 predicate places. [2022-11-16 11:07:14,538 INFO L495 AbstractCegarLoop]: Abstraction has has 608 places, 605 transitions, 9575 flow [2022-11-16 11:07:14,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:14,538 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:07:14,538 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:14,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-11-16 11:07:14,539 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:07:14,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:14,539 INFO L85 PathProgramCache]: Analyzing trace with hash -481131398, now seen corresponding path program 98 times [2022-11-16 11:07:14,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:14,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785916925] [2022-11-16 11:07:14,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:14,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:14,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:15,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:07:15,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:15,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785916925] [2022-11-16 11:07:15,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785916925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:15,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:15,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-16 11:07:15,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085483231] [2022-11-16 11:07:15,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:15,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:07:15,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:15,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:07:15,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:07:15,041 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:07:15,041 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 608 places, 605 transitions, 9575 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:15,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:07:15,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:07:15,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:07:17,424 INFO L130 PetriNetUnfolder]: 400/1336 cut-off events. [2022-11-16 11:07:17,424 INFO L131 PetriNetUnfolder]: For 31105/31105 co-relation queries the response was YES. [2022-11-16 11:07:17,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11298 conditions, 1336 events. 400/1336 cut-off events. For 31105/31105 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 9058 event pairs, 38 based on Foata normal form. 1/1335 useless extension candidates. Maximal degree in co-relation 11084. Up to 777 conditions per place. [2022-11-16 11:07:17,443 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 364 selfloop transitions, 225 changer transitions 20/648 dead transitions. [2022-11-16 11:07:17,443 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 648 places, 648 transitions, 11594 flow [2022-11-16 11:07:17,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-16 11:07:17,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-11-16 11:07:17,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 2515 transitions. [2022-11-16 11:07:17,446 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5574024822695035 [2022-11-16 11:07:17,446 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 2515 transitions. [2022-11-16 11:07:17,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 2515 transitions. [2022-11-16 11:07:17,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:07:17,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 2515 transitions. [2022-11-16 11:07:17,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 52.395833333333336) internal successors, (2515), 48 states have internal predecessors, (2515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:17,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 94.0) internal successors, (4606), 49 states have internal predecessors, (4606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:17,451 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 94.0) internal successors, (4606), 49 states have internal predecessors, (4606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:17,451 INFO L175 Difference]: Start difference. First operand has 608 places, 605 transitions, 9575 flow. Second operand 48 states and 2515 transitions. [2022-11-16 11:07:17,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 648 places, 648 transitions, 11594 flow [2022-11-16 11:07:17,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 615 places, 648 transitions, 11289 flow, removed 65 selfloop flow, removed 33 redundant places. [2022-11-16 11:07:17,800 INFO L231 Difference]: Finished difference. Result has 622 places, 611 transitions, 10034 flow [2022-11-16 11:07:17,801 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9280, PETRI_DIFFERENCE_MINUEND_PLACES=568, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=10034, PETRI_PLACES=622, PETRI_TRANSITIONS=611} [2022-11-16 11:07:17,801 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 534 predicate places. [2022-11-16 11:07:17,801 INFO L495 AbstractCegarLoop]: Abstraction has has 622 places, 611 transitions, 10034 flow [2022-11-16 11:07:17,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:17,801 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:07:17,801 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:17,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-11-16 11:07:17,801 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:07:17,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:17,802 INFO L85 PathProgramCache]: Analyzing trace with hash 521647042, now seen corresponding path program 99 times [2022-11-16 11:07:17,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:17,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458972843] [2022-11-16 11:07:17,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:17,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:18,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:07:18,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:18,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458972843] [2022-11-16 11:07:18,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458972843] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:18,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:18,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-16 11:07:18,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994722895] [2022-11-16 11:07:18,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:18,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:07:18,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:18,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:07:18,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:07:18,291 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:07:18,292 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 622 places, 611 transitions, 10034 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:18,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:07:18,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:07:18,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:07:20,292 INFO L130 PetriNetUnfolder]: 395/1308 cut-off events. [2022-11-16 11:07:20,292 INFO L131 PetriNetUnfolder]: For 30493/30493 co-relation queries the response was YES. [2022-11-16 11:07:20,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11268 conditions, 1308 events. 395/1308 cut-off events. For 30493/30493 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 8746 event pairs, 38 based on Foata normal form. 1/1307 useless extension candidates. Maximal degree in co-relation 11052. Up to 926 conditions per place. [2022-11-16 11:07:20,307 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 485 selfloop transitions, 75 changer transitions 31/630 dead transitions. [2022-11-16 11:07:20,308 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 650 places, 630 transitions, 11302 flow [2022-11-16 11:07:20,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 11:07:20,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-16 11:07:20,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1788 transitions. [2022-11-16 11:07:20,310 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5594493116395495 [2022-11-16 11:07:20,310 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1788 transitions. [2022-11-16 11:07:20,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1788 transitions. [2022-11-16 11:07:20,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:07:20,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1788 transitions. [2022-11-16 11:07:20,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.588235294117645) internal successors, (1788), 34 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:20,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:20,314 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:20,314 INFO L175 Difference]: Start difference. First operand has 622 places, 611 transitions, 10034 flow. Second operand 34 states and 1788 transitions. [2022-11-16 11:07:20,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 650 places, 630 transitions, 11302 flow [2022-11-16 11:07:20,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 609 places, 630 transitions, 10921 flow, removed 75 selfloop flow, removed 41 redundant places. [2022-11-16 11:07:20,699 INFO L231 Difference]: Finished difference. Result has 613 places, 590 transitions, 9541 flow [2022-11-16 11:07:20,699 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9659, PETRI_DIFFERENCE_MINUEND_PLACES=576, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=9541, PETRI_PLACES=613, PETRI_TRANSITIONS=590} [2022-11-16 11:07:20,699 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 525 predicate places. [2022-11-16 11:07:20,699 INFO L495 AbstractCegarLoop]: Abstraction has has 613 places, 590 transitions, 9541 flow [2022-11-16 11:07:20,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:20,700 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:07:20,700 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:20,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-11-16 11:07:20,700 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:07:20,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:20,700 INFO L85 PathProgramCache]: Analyzing trace with hash -773918718, now seen corresponding path program 100 times [2022-11-16 11:07:20,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:20,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397138915] [2022-11-16 11:07:20,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:20,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:20,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:21,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:07:21,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:21,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397138915] [2022-11-16 11:07:21,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397138915] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:21,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:21,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:07:21,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730285672] [2022-11-16 11:07:21,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:21,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:07:21,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:21,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:07:21,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:07:21,192 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:07:21,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 590 transitions, 9541 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:21,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:07:21,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:07:21,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:07:23,257 INFO L130 PetriNetUnfolder]: 394/1295 cut-off events. [2022-11-16 11:07:23,257 INFO L131 PetriNetUnfolder]: For 28442/28442 co-relation queries the response was YES. [2022-11-16 11:07:23,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11071 conditions, 1295 events. 394/1295 cut-off events. For 28442/28442 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 8579 event pairs, 52 based on Foata normal form. 1/1294 useless extension candidates. Maximal degree in co-relation 10854. Up to 901 conditions per place. [2022-11-16 11:07:23,276 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 466 selfloop transitions, 93 changer transitions 23/621 dead transitions. [2022-11-16 11:07:23,276 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 627 places, 621 transitions, 11038 flow [2022-11-16 11:07:23,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-16 11:07:23,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-16 11:07:23,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2002 transitions. [2022-11-16 11:07:23,280 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5604703247480403 [2022-11-16 11:07:23,280 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2002 transitions. [2022-11-16 11:07:23,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2002 transitions. [2022-11-16 11:07:23,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:07:23,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2002 transitions. [2022-11-16 11:07:23,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.68421052631579) internal successors, (2002), 38 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:23,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:23,284 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:23,284 INFO L175 Difference]: Start difference. First operand has 613 places, 590 transitions, 9541 flow. Second operand 38 states and 2002 transitions. [2022-11-16 11:07:23,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 627 places, 621 transitions, 11038 flow [2022-11-16 11:07:23,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 621 transitions, 10617 flow, removed 54 selfloop flow, removed 43 redundant places. [2022-11-16 11:07:23,654 INFO L231 Difference]: Finished difference. Result has 591 places, 587 transitions, 9385 flow [2022-11-16 11:07:23,654 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9146, PETRI_DIFFERENCE_MINUEND_PLACES=547, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=9385, PETRI_PLACES=591, PETRI_TRANSITIONS=587} [2022-11-16 11:07:23,654 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 503 predicate places. [2022-11-16 11:07:23,654 INFO L495 AbstractCegarLoop]: Abstraction has has 591 places, 587 transitions, 9385 flow [2022-11-16 11:07:23,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:23,655 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:07:23,655 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:23,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-11-16 11:07:23,655 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:07:23,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:23,655 INFO L85 PathProgramCache]: Analyzing trace with hash 948382796, now seen corresponding path program 101 times [2022-11-16 11:07:23,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:23,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439199733] [2022-11-16 11:07:23,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:23,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:23,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:24,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:07:24,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:24,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439199733] [2022-11-16 11:07:24,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439199733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:24,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:24,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:07:24,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911797271] [2022-11-16 11:07:24,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:24,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:07:24,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:24,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:07:24,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:07:24,184 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:07:24,185 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 587 transitions, 9385 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:24,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:07:24,185 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:07:24,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:07:26,404 INFO L130 PetriNetUnfolder]: 392/1290 cut-off events. [2022-11-16 11:07:26,404 INFO L131 PetriNetUnfolder]: For 26969/26969 co-relation queries the response was YES. [2022-11-16 11:07:26,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10978 conditions, 1290 events. 392/1290 cut-off events. For 26969/26969 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 8544 event pairs, 51 based on Foata normal form. 1/1289 useless extension candidates. Maximal degree in co-relation 10767. Up to 769 conditions per place. [2022-11-16 11:07:26,427 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 358 selfloop transitions, 216 changer transitions 23/636 dead transitions. [2022-11-16 11:07:26,427 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 636 transitions, 11428 flow [2022-11-16 11:07:26,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-16 11:07:26,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-16 11:07:26,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 2159 transitions. [2022-11-16 11:07:26,430 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.560197197716658 [2022-11-16 11:07:26,430 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 2159 transitions. [2022-11-16 11:07:26,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 2159 transitions. [2022-11-16 11:07:26,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:07:26,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 2159 transitions. [2022-11-16 11:07:26,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 52.65853658536585) internal successors, (2159), 41 states have internal predecessors, (2159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:26,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:26,438 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:26,439 INFO L175 Difference]: Start difference. First operand has 591 places, 587 transitions, 9385 flow. Second operand 41 states and 2159 transitions. [2022-11-16 11:07:26,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 636 transitions, 11428 flow [2022-11-16 11:07:26,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 636 transitions, 11109 flow, removed 53 selfloop flow, removed 35 redundant places. [2022-11-16 11:07:26,813 INFO L231 Difference]: Finished difference. Result has 594 places, 596 transitions, 9858 flow [2022-11-16 11:07:26,814 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9072, PETRI_DIFFERENCE_MINUEND_PLACES=547, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=9858, PETRI_PLACES=594, PETRI_TRANSITIONS=596} [2022-11-16 11:07:26,815 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 506 predicate places. [2022-11-16 11:07:26,815 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 596 transitions, 9858 flow [2022-11-16 11:07:26,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:26,815 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:07:26,816 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:26,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-11-16 11:07:26,816 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:07:26,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:26,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1741176090, now seen corresponding path program 102 times [2022-11-16 11:07:26,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:26,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278284155] [2022-11-16 11:07:26,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:26,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:26,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:27,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:07:27,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:27,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278284155] [2022-11-16 11:07:27,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278284155] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:27,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:27,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:07:27,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73146237] [2022-11-16 11:07:27,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:27,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:07:27,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:27,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:07:27,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:07:27,329 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:07:27,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 596 transitions, 9858 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:27,330 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:07:27,330 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:07:27,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:07:29,260 INFO L130 PetriNetUnfolder]: 391/1259 cut-off events. [2022-11-16 11:07:29,260 INFO L131 PetriNetUnfolder]: For 27760/27760 co-relation queries the response was YES. [2022-11-16 11:07:29,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11014 conditions, 1259 events. 391/1259 cut-off events. For 27760/27760 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 8193 event pairs, 52 based on Foata normal form. 1/1258 useless extension candidates. Maximal degree in co-relation 10800. Up to 895 conditions per place. [2022-11-16 11:07:29,277 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 474 selfloop transitions, 92 changer transitions 18/623 dead transitions. [2022-11-16 11:07:29,277 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 623 transitions, 11353 flow [2022-11-16 11:07:29,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-16 11:07:29,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-16 11:07:29,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1899 transitions. [2022-11-16 11:07:29,280 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5611702127659575 [2022-11-16 11:07:29,280 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1899 transitions. [2022-11-16 11:07:29,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1899 transitions. [2022-11-16 11:07:29,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:07:29,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1899 transitions. [2022-11-16 11:07:29,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.75) internal successors, (1899), 36 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:29,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:29,283 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:29,283 INFO L175 Difference]: Start difference. First operand has 594 places, 596 transitions, 9858 flow. Second operand 36 states and 1899 transitions. [2022-11-16 11:07:29,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 623 transitions, 11353 flow [2022-11-16 11:07:29,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 623 transitions, 10853 flow, removed 71 selfloop flow, removed 38 redundant places. [2022-11-16 11:07:29,619 INFO L231 Difference]: Finished difference. Result has 591 places, 595 transitions, 9640 flow [2022-11-16 11:07:29,620 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9376, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=596, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=9640, PETRI_PLACES=591, PETRI_TRANSITIONS=595} [2022-11-16 11:07:29,620 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 503 predicate places. [2022-11-16 11:07:29,620 INFO L495 AbstractCegarLoop]: Abstraction has has 591 places, 595 transitions, 9640 flow [2022-11-16 11:07:29,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:29,620 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:07:29,621 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:29,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-11-16 11:07:29,621 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:07:29,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:29,621 INFO L85 PathProgramCache]: Analyzing trace with hash -470436548, now seen corresponding path program 103 times [2022-11-16 11:07:29,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:29,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486925103] [2022-11-16 11:07:29,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:29,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:29,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:30,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:07:30,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:30,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486925103] [2022-11-16 11:07:30,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486925103] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:30,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:30,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-16 11:07:30,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934596325] [2022-11-16 11:07:30,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:30,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:07:30,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:30,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:07:30,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:07:30,142 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:07:30,143 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 595 transitions, 9640 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:30,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:07:30,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:07:30,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:07:32,710 INFO L130 PetriNetUnfolder]: 397/1292 cut-off events. [2022-11-16 11:07:32,710 INFO L131 PetriNetUnfolder]: For 26010/26010 co-relation queries the response was YES. [2022-11-16 11:07:32,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11068 conditions, 1292 events. 397/1292 cut-off events. For 26010/26010 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 8505 event pairs, 49 based on Foata normal form. 1/1292 useless extension candidates. Maximal degree in co-relation 10857. Up to 799 conditions per place. [2022-11-16 11:07:32,728 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 409 selfloop transitions, 188 changer transitions 17/653 dead transitions. [2022-11-16 11:07:32,728 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 631 places, 653 transitions, 11916 flow [2022-11-16 11:07:32,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-16 11:07:32,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-11-16 11:07:32,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 2512 transitions. [2022-11-16 11:07:32,731 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5567375886524822 [2022-11-16 11:07:32,731 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 2512 transitions. [2022-11-16 11:07:32,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 2512 transitions. [2022-11-16 11:07:32,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:07:32,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 2512 transitions. [2022-11-16 11:07:32,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 52.333333333333336) internal successors, (2512), 48 states have internal predecessors, (2512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:32,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 94.0) internal successors, (4606), 49 states have internal predecessors, (4606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:32,735 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 94.0) internal successors, (4606), 49 states have internal predecessors, (4606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:32,736 INFO L175 Difference]: Start difference. First operand has 591 places, 595 transitions, 9640 flow. Second operand 48 states and 2512 transitions. [2022-11-16 11:07:32,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 631 places, 653 transitions, 11916 flow [2022-11-16 11:07:33,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 653 transitions, 11589 flow, removed 70 selfloop flow, removed 35 redundant places. [2022-11-16 11:07:33,106 INFO L231 Difference]: Finished difference. Result has 603 places, 613 transitions, 10139 flow [2022-11-16 11:07:33,107 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9323, PETRI_DIFFERENCE_MINUEND_PLACES=549, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=10139, PETRI_PLACES=603, PETRI_TRANSITIONS=613} [2022-11-16 11:07:33,107 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 515 predicate places. [2022-11-16 11:07:33,107 INFO L495 AbstractCegarLoop]: Abstraction has has 603 places, 613 transitions, 10139 flow [2022-11-16 11:07:33,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:33,107 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:07:33,109 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:33,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-11-16 11:07:33,109 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:07:33,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:33,109 INFO L85 PathProgramCache]: Analyzing trace with hash 123234612, now seen corresponding path program 104 times [2022-11-16 11:07:33,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:33,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954474737] [2022-11-16 11:07:33,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:33,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:33,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:33,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:07:33,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:33,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954474737] [2022-11-16 11:07:33,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954474737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:33,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:33,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-16 11:07:33,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808579352] [2022-11-16 11:07:33,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:33,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:07:33,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:33,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:07:33,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:07:33,621 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:07:33,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 613 transitions, 10139 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:33,622 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:07:33,622 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:07:33,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:07:35,487 INFO L130 PetriNetUnfolder]: 392/1274 cut-off events. [2022-11-16 11:07:35,487 INFO L131 PetriNetUnfolder]: For 25310/25310 co-relation queries the response was YES. [2022-11-16 11:07:35,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10983 conditions, 1274 events. 392/1274 cut-off events. For 25310/25310 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 8361 event pairs, 48 based on Foata normal form. 1/1274 useless extension candidates. Maximal degree in co-relation 10771. Up to 924 conditions per place. [2022-11-16 11:07:35,507 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 493 selfloop transitions, 74 changer transitions 25/631 dead transitions. [2022-11-16 11:07:35,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 632 places, 631 transitions, 11422 flow [2022-11-16 11:07:35,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 11:07:35,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 11:07:35,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1835 transitions. [2022-11-16 11:07:35,510 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5577507598784195 [2022-11-16 11:07:35,510 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1835 transitions. [2022-11-16 11:07:35,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1835 transitions. [2022-11-16 11:07:35,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:07:35,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1835 transitions. [2022-11-16 11:07:35,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.42857142857143) internal successors, (1835), 35 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:35,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:35,516 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:35,516 INFO L175 Difference]: Start difference. First operand has 603 places, 613 transitions, 10139 flow. Second operand 35 states and 1835 transitions. [2022-11-16 11:07:35,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 632 places, 631 transitions, 11422 flow [2022-11-16 11:07:35,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 591 places, 631 transitions, 11076 flow, removed 52 selfloop flow, removed 41 redundant places. [2022-11-16 11:07:35,847 INFO L231 Difference]: Finished difference. Result has 596 places, 597 transitions, 9708 flow [2022-11-16 11:07:35,847 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9799, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=9708, PETRI_PLACES=596, PETRI_TRANSITIONS=597} [2022-11-16 11:07:35,847 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 508 predicate places. [2022-11-16 11:07:35,847 INFO L495 AbstractCegarLoop]: Abstraction has has 596 places, 597 transitions, 9708 flow [2022-11-16 11:07:35,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:35,848 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:07:35,848 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:35,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-11-16 11:07:35,848 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:07:35,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:35,848 INFO L85 PathProgramCache]: Analyzing trace with hash 839897168, now seen corresponding path program 105 times [2022-11-16 11:07:35,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:35,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221688005] [2022-11-16 11:07:35,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:35,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:36,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:07:36,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:36,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221688005] [2022-11-16 11:07:36,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221688005] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:36,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:36,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:07:36,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213400640] [2022-11-16 11:07:36,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:36,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:07:36,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:36,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:07:36,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:07:36,328 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:07:36,329 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 596 places, 597 transitions, 9708 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:36,329 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:07:36,329 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:07:36,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:07:38,093 INFO L130 PetriNetUnfolder]: 387/1250 cut-off events. [2022-11-16 11:07:38,093 INFO L131 PetriNetUnfolder]: For 24157/24157 co-relation queries the response was YES. [2022-11-16 11:07:38,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10716 conditions, 1250 events. 387/1250 cut-off events. For 24157/24157 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8119 event pairs, 48 based on Foata normal form. 1/1250 useless extension candidates. Maximal degree in co-relation 10503. Up to 894 conditions per place. [2022-11-16 11:07:38,110 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 479 selfloop transitions, 78 changer transitions 19/615 dead transitions. [2022-11-16 11:07:38,111 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 605 places, 615 transitions, 10954 flow [2022-11-16 11:07:38,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 11:07:38,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-16 11:07:38,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1790 transitions. [2022-11-16 11:07:38,113 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5600750938673341 [2022-11-16 11:07:38,113 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1790 transitions. [2022-11-16 11:07:38,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1790 transitions. [2022-11-16 11:07:38,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:07:38,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1790 transitions. [2022-11-16 11:07:38,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.64705882352941) internal successors, (1790), 34 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:38,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:38,119 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:38,119 INFO L175 Difference]: Start difference. First operand has 596 places, 597 transitions, 9708 flow. Second operand 34 states and 1790 transitions. [2022-11-16 11:07:38,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 605 places, 615 transitions, 10954 flow [2022-11-16 11:07:38,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 615 transitions, 10626 flow, removed 23 selfloop flow, removed 41 redundant places. [2022-11-16 11:07:38,436 INFO L231 Difference]: Finished difference. Result has 569 places, 587 transitions, 9493 flow [2022-11-16 11:07:38,436 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9388, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=9493, PETRI_PLACES=569, PETRI_TRANSITIONS=587} [2022-11-16 11:07:38,436 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 481 predicate places. [2022-11-16 11:07:38,437 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 587 transitions, 9493 flow [2022-11-16 11:07:38,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:38,437 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:07:38,437 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:38,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-11-16 11:07:38,438 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:07:38,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:38,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1224198230, now seen corresponding path program 106 times [2022-11-16 11:07:38,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:38,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094821247] [2022-11-16 11:07:38,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:38,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:38,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:38,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:07:38,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:38,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094821247] [2022-11-16 11:07:38,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094821247] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:38,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:38,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:07:38,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425625616] [2022-11-16 11:07:38,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:38,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:07:38,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:38,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:07:38,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:07:38,979 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:07:38,980 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 587 transitions, 9493 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:38,980 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:07:38,980 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:07:38,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:07:40,680 INFO L130 PetriNetUnfolder]: 383/1236 cut-off events. [2022-11-16 11:07:40,680 INFO L131 PetriNetUnfolder]: For 23826/23826 co-relation queries the response was YES. [2022-11-16 11:07:40,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10505 conditions, 1236 events. 383/1236 cut-off events. For 23826/23826 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 7989 event pairs, 51 based on Foata normal form. 1/1235 useless extension candidates. Maximal degree in co-relation 10304. Up to 885 conditions per place. [2022-11-16 11:07:40,694 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 463 selfloop transitions, 56 changer transitions 46/604 dead transitions. [2022-11-16 11:07:40,694 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 585 places, 604 transitions, 10711 flow [2022-11-16 11:07:40,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 11:07:40,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-16 11:07:40,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1688 transitions. [2022-11-16 11:07:40,696 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5611702127659575 [2022-11-16 11:07:40,696 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1688 transitions. [2022-11-16 11:07:40,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1688 transitions. [2022-11-16 11:07:40,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:07:40,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1688 transitions. [2022-11-16 11:07:40,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.75) internal successors, (1688), 32 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:40,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:40,699 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:40,699 INFO L175 Difference]: Start difference. First operand has 569 places, 587 transitions, 9493 flow. Second operand 32 states and 1688 transitions. [2022-11-16 11:07:40,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 585 places, 604 transitions, 10711 flow [2022-11-16 11:07:40,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 551 places, 604 transitions, 10484 flow, removed 12 selfloop flow, removed 34 redundant places. [2022-11-16 11:07:40,994 INFO L231 Difference]: Finished difference. Result has 555 places, 549 transitions, 8980 flow [2022-11-16 11:07:40,994 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9274, PETRI_DIFFERENCE_MINUEND_PLACES=520, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=8980, PETRI_PLACES=555, PETRI_TRANSITIONS=549} [2022-11-16 11:07:40,995 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 467 predicate places. [2022-11-16 11:07:40,995 INFO L495 AbstractCegarLoop]: Abstraction has has 555 places, 549 transitions, 8980 flow [2022-11-16 11:07:40,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:40,995 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:07:40,995 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:40,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-11-16 11:07:40,996 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:07:40,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:40,996 INFO L85 PathProgramCache]: Analyzing trace with hash -922201066, now seen corresponding path program 107 times [2022-11-16 11:07:40,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:40,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186630684] [2022-11-16 11:07:40,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:40,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:41,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:07:41,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:41,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186630684] [2022-11-16 11:07:41,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186630684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:41,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:41,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:07:41,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716132251] [2022-11-16 11:07:41,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:41,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:07:41,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:41,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:07:41,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:07:41,448 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:07:41,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 549 transitions, 8980 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:41,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:07:41,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:07:41,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:07:43,217 INFO L130 PetriNetUnfolder]: 374/1205 cut-off events. [2022-11-16 11:07:43,217 INFO L131 PetriNetUnfolder]: For 23855/23855 co-relation queries the response was YES. [2022-11-16 11:07:43,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10212 conditions, 1205 events. 374/1205 cut-off events. For 23855/23855 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 7741 event pairs, 51 based on Foata normal form. 1/1204 useless extension candidates. Maximal degree in co-relation 10015. Up to 795 conditions per place. [2022-11-16 11:07:43,233 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 394 selfloop transitions, 126 changer transitions 26/585 dead transitions. [2022-11-16 11:07:43,233 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 585 transitions, 10515 flow [2022-11-16 11:07:43,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 11:07:43,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-16 11:07:43,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1801 transitions. [2022-11-16 11:07:43,235 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5635168961201502 [2022-11-16 11:07:43,235 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1801 transitions. [2022-11-16 11:07:43,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1801 transitions. [2022-11-16 11:07:43,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:07:43,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1801 transitions. [2022-11-16 11:07:43,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.970588235294116) internal successors, (1801), 34 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:43,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:43,239 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:43,239 INFO L175 Difference]: Start difference. First operand has 555 places, 549 transitions, 8980 flow. Second operand 34 states and 1801 transitions. [2022-11-16 11:07:43,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 585 transitions, 10515 flow [2022-11-16 11:07:43,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 585 transitions, 9960 flow, removed 70 selfloop flow, removed 45 redundant places. [2022-11-16 11:07:43,507 INFO L231 Difference]: Finished difference. Result has 512 places, 543 transitions, 8651 flow [2022-11-16 11:07:43,507 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8473, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=8651, PETRI_PLACES=512, PETRI_TRANSITIONS=543} [2022-11-16 11:07:43,507 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 424 predicate places. [2022-11-16 11:07:43,507 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 543 transitions, 8651 flow [2022-11-16 11:07:43,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:43,508 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:07:43,508 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:43,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-11-16 11:07:43,508 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:07:43,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:43,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1691880736, now seen corresponding path program 108 times [2022-11-16 11:07:43,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL WARNING: YOUR LOGFILE WAS TOO LONG, SOME LINES IN THE MIDDLE WERE REMOVED. [2022-11-16 11:08:12,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:12,233 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:12,233 INFO L175 Difference]: Start difference. First operand has 467 places, 447 transitions, 6210 flow. Second operand 40 states and 2098 transitions. [2022-11-16 11:08:12,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 481 transitions, 7467 flow [2022-11-16 11:08:12,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 481 transitions, 7022 flow, removed 92 selfloop flow, removed 45 redundant places. [2022-11-16 11:08:12,379 INFO L231 Difference]: Finished difference. Result has 454 places, 444 transitions, 6142 flow [2022-11-16 11:08:12,380 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5785, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=6142, PETRI_PLACES=454, PETRI_TRANSITIONS=444} [2022-11-16 11:08:12,380 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 366 predicate places. [2022-11-16 11:08:12,380 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 444 transitions, 6142 flow [2022-11-16 11:08:12,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:12,380 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:08:12,380 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:12,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-11-16 11:08:12,380 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:08:12,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:12,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1211001856, now seen corresponding path program 119 times [2022-11-16 11:08:12,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:12,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110678836] [2022-11-16 11:08:12,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:12,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:12,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:12,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:08:12,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:12,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110678836] [2022-11-16 11:08:12,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110678836] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:12,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:12,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-16 11:08:12,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954228852] [2022-11-16 11:08:12,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:12,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:08:12,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:12,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:08:12,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:08:12,869 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:08:12,870 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 444 transitions, 6142 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:12,870 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:08:12,870 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:08:12,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:08:14,707 INFO L130 PetriNetUnfolder]: 323/1013 cut-off events. [2022-11-16 11:08:14,707 INFO L131 PetriNetUnfolder]: For 12220/12220 co-relation queries the response was YES. [2022-11-16 11:08:14,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7446 conditions, 1013 events. 323/1013 cut-off events. For 12220/12220 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5929 event pairs, 57 based on Foata normal form. 1/1011 useless extension candidates. Maximal degree in co-relation 7292. Up to 632 conditions per place. [2022-11-16 11:08:14,764 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 275 selfloop transitions, 97 changer transitions 57/468 dead transitions. [2022-11-16 11:08:14,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 468 transitions, 7150 flow [2022-11-16 11:08:14,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-16 11:08:14,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-16 11:08:14,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1942 transitions. [2022-11-16 11:08:14,767 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5583668775158137 [2022-11-16 11:08:14,767 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1942 transitions. [2022-11-16 11:08:14,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1942 transitions. [2022-11-16 11:08:14,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:08:14,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1942 transitions. [2022-11-16 11:08:14,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.486486486486484) internal successors, (1942), 37 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:14,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:14,771 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:14,771 INFO L175 Difference]: Start difference. First operand has 454 places, 444 transitions, 6142 flow. Second operand 37 states and 1942 transitions. [2022-11-16 11:08:14,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 468 transitions, 7150 flow [2022-11-16 11:08:14,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 468 transitions, 6736 flow, removed 47 selfloop flow, removed 38 redundant places. [2022-11-16 11:08:14,918 INFO L231 Difference]: Finished difference. Result has 451 places, 396 transitions, 5108 flow [2022-11-16 11:08:14,918 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5737, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=5108, PETRI_PLACES=451, PETRI_TRANSITIONS=396} [2022-11-16 11:08:14,919 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 363 predicate places. [2022-11-16 11:08:14,919 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 396 transitions, 5108 flow [2022-11-16 11:08:14,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:14,919 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:08:14,920 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:14,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-11-16 11:08:14,920 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:08:14,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:14,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1942169300, now seen corresponding path program 120 times [2022-11-16 11:08:14,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:14,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806427185] [2022-11-16 11:08:14,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:14,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:14,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:15,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:08:15,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:15,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806427185] [2022-11-16 11:08:15,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806427185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:15,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:15,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:08:15,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651851393] [2022-11-16 11:08:15,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:15,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:08:15,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:15,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:08:15,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:08:15,431 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:08:15,431 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 396 transitions, 5108 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:15,431 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:08:15,431 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:08:15,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:08:17,036 INFO L130 PetriNetUnfolder]: 310/964 cut-off events. [2022-11-16 11:08:17,037 INFO L131 PetriNetUnfolder]: For 11933/11933 co-relation queries the response was YES. [2022-11-16 11:08:17,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6956 conditions, 964 events. 310/964 cut-off events. For 11933/11933 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5493 event pairs, 57 based on Foata normal form. 1/963 useless extension candidates. Maximal degree in co-relation 6803. Up to 645 conditions per place. [2022-11-16 11:08:17,048 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 280 selfloop transitions, 87 changer transitions 22/428 dead transitions. [2022-11-16 11:08:17,048 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 428 transitions, 6240 flow [2022-11-16 11:08:17,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 11:08:17,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-16 11:08:17,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1746 transitions. [2022-11-16 11:08:17,050 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.562862669245648 [2022-11-16 11:08:17,050 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1746 transitions. [2022-11-16 11:08:17,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1746 transitions. [2022-11-16 11:08:17,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:08:17,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1746 transitions. [2022-11-16 11:08:17,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 52.90909090909091) internal successors, (1746), 33 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:17,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:17,053 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:17,053 INFO L175 Difference]: Start difference. First operand has 451 places, 396 transitions, 5108 flow. Second operand 33 states and 1746 transitions. [2022-11-16 11:08:17,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 428 transitions, 6240 flow [2022-11-16 11:08:17,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 428 transitions, 5724 flow, removed 103 selfloop flow, removed 46 redundant places. [2022-11-16 11:08:17,170 INFO L231 Difference]: Finished difference. Result has 423 places, 394 transitions, 4837 flow [2022-11-16 11:08:17,171 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=4622, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=4837, PETRI_PLACES=423, PETRI_TRANSITIONS=394} [2022-11-16 11:08:17,171 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 335 predicate places. [2022-11-16 11:08:17,171 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 394 transitions, 4837 flow [2022-11-16 11:08:17,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:17,172 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:08:17,172 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:17,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-11-16 11:08:17,172 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:08:17,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:17,172 INFO L85 PathProgramCache]: Analyzing trace with hash -487756908, now seen corresponding path program 121 times [2022-11-16 11:08:17,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:17,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714706883] [2022-11-16 11:08:17,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:17,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:17,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:08:17,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:17,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714706883] [2022-11-16 11:08:17,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714706883] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:17,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:17,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:08:17,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368678039] [2022-11-16 11:08:17,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:17,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:08:17,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:17,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:08:17,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:08:17,656 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:08:17,657 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 394 transitions, 4837 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:17,657 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:08:17,657 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:08:17,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:08:19,224 INFO L130 PetriNetUnfolder]: 301/935 cut-off events. [2022-11-16 11:08:19,224 INFO L131 PetriNetUnfolder]: For 11658/11658 co-relation queries the response was YES. [2022-11-16 11:08:19,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6605 conditions, 935 events. 301/935 cut-off events. For 11658/11658 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 5223 event pairs, 41 based on Foata normal form. 1/935 useless extension candidates. Maximal degree in co-relation 6460. Up to 617 conditions per place. [2022-11-16 11:08:19,232 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 257 selfloop transitions, 71 changer transitions 51/418 dead transitions. [2022-11-16 11:08:19,233 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 418 transitions, 5744 flow [2022-11-16 11:08:19,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 11:08:19,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 11:08:19,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1839 transitions. [2022-11-16 11:08:19,235 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.558966565349544 [2022-11-16 11:08:19,235 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1839 transitions. [2022-11-16 11:08:19,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1839 transitions. [2022-11-16 11:08:19,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:08:19,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1839 transitions. [2022-11-16 11:08:19,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.542857142857144) internal successors, (1839), 35 states have internal predecessors, (1839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:19,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:19,238 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:19,238 INFO L175 Difference]: Start difference. First operand has 423 places, 394 transitions, 4837 flow. Second operand 35 states and 1839 transitions. [2022-11-16 11:08:19,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 418 transitions, 5744 flow [2022-11-16 11:08:19,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 418 transitions, 5457 flow, removed 36 selfloop flow, removed 33 redundant places. [2022-11-16 11:08:19,336 INFO L231 Difference]: Finished difference. Result has 420 places, 358 transitions, 4222 flow [2022-11-16 11:08:19,336 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=4560, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4222, PETRI_PLACES=420, PETRI_TRANSITIONS=358} [2022-11-16 11:08:19,336 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 332 predicate places. [2022-11-16 11:08:19,336 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 358 transitions, 4222 flow [2022-11-16 11:08:19,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:19,337 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:08:19,337 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:19,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-11-16 11:08:19,337 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:08:19,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:19,337 INFO L85 PathProgramCache]: Analyzing trace with hash -794517584, now seen corresponding path program 122 times [2022-11-16 11:08:19,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:19,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414430175] [2022-11-16 11:08:19,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:19,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:19,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:08:19,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:19,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414430175] [2022-11-16 11:08:19,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414430175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:19,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:19,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 11:08:19,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116099334] [2022-11-16 11:08:19,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:19,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 11:08:19,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:19,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 11:08:19,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:08:19,877 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:08:19,877 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 358 transitions, 4222 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:19,877 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:08:19,877 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:08:19,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:08:21,561 INFO L130 PetriNetUnfolder]: 286/869 cut-off events. [2022-11-16 11:08:21,561 INFO L131 PetriNetUnfolder]: For 9992/9992 co-relation queries the response was YES. [2022-11-16 11:08:21,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6023 conditions, 869 events. 286/869 cut-off events. For 9992/9992 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 4625 event pairs, 49 based on Foata normal form. 1/868 useless extension candidates. Maximal degree in co-relation 5882. Up to 609 conditions per place. [2022-11-16 11:08:21,570 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 251 selfloop transitions, 61 changer transitions 24/375 dead transitions. [2022-11-16 11:08:21,571 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 375 transitions, 4972 flow [2022-11-16 11:08:21,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-16 11:08:21,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-16 11:08:21,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1875 transitions. [2022-11-16 11:08:21,573 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5540780141843972 [2022-11-16 11:08:21,573 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1875 transitions. [2022-11-16 11:08:21,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1875 transitions. [2022-11-16 11:08:21,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:08:21,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1875 transitions. [2022-11-16 11:08:21,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.083333333333336) internal successors, (1875), 36 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:21,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:21,576 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:21,576 INFO L175 Difference]: Start difference. First operand has 420 places, 358 transitions, 4222 flow. Second operand 36 states and 1875 transitions. [2022-11-16 11:08:21,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 375 transitions, 4972 flow [2022-11-16 11:08:21,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 375 transitions, 4624 flow, removed 48 selfloop flow, removed 48 redundant places. [2022-11-16 11:08:21,671 INFO L231 Difference]: Finished difference. Result has 396 places, 342 transitions, 3914 flow [2022-11-16 11:08:21,671 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3880, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=3914, PETRI_PLACES=396, PETRI_TRANSITIONS=342} [2022-11-16 11:08:21,671 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 308 predicate places. [2022-11-16 11:08:21,672 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 342 transitions, 3914 flow [2022-11-16 11:08:21,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:21,672 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:08:21,672 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:21,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2022-11-16 11:08:21,672 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:08:21,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:21,672 INFO L85 PathProgramCache]: Analyzing trace with hash 8290352, now seen corresponding path program 123 times [2022-11-16 11:08:21,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:21,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902699471] [2022-11-16 11:08:21,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:21,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:22,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:08:22,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:22,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902699471] [2022-11-16 11:08:22,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902699471] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:22,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:22,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-16 11:08:22,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771557542] [2022-11-16 11:08:22,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:22,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:08:22,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:22,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:08:22,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:08:22,171 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:08:22,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 342 transitions, 3914 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:22,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:08:22,171 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:08:22,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:08:23,914 INFO L130 PetriNetUnfolder]: 288/861 cut-off events. [2022-11-16 11:08:23,914 INFO L131 PetriNetUnfolder]: For 9400/9400 co-relation queries the response was YES. [2022-11-16 11:08:23,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5896 conditions, 861 events. 288/861 cut-off events. For 9400/9400 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 4549 event pairs, 58 based on Foata normal form. 1/860 useless extension candidates. Maximal degree in co-relation 5765. Up to 518 conditions per place. [2022-11-16 11:08:23,923 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 175 selfloop transitions, 137 changer transitions 23/374 dead transitions. [2022-11-16 11:08:23,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 374 transitions, 4911 flow [2022-11-16 11:08:23,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-16 11:08:23,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-16 11:08:23,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 2146 transitions. [2022-11-16 11:08:23,926 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5568240788790867 [2022-11-16 11:08:23,927 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 2146 transitions. [2022-11-16 11:08:23,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 2146 transitions. [2022-11-16 11:08:23,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:08:23,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 2146 transitions. [2022-11-16 11:08:23,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 52.34146341463415) internal successors, (2146), 41 states have internal predecessors, (2146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:23,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:23,931 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:23,931 INFO L175 Difference]: Start difference. First operand has 396 places, 342 transitions, 3914 flow. Second operand 41 states and 2146 transitions. [2022-11-16 11:08:23,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 374 transitions, 4911 flow [2022-11-16 11:08:24,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 374 transitions, 4609 flow, removed 37 selfloop flow, removed 34 redundant places. [2022-11-16 11:08:24,025 INFO L231 Difference]: Finished difference. Result has 380 places, 341 transitions, 3998 flow [2022-11-16 11:08:24,025 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3644, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=3998, PETRI_PLACES=380, PETRI_TRANSITIONS=341} [2022-11-16 11:08:24,026 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 292 predicate places. [2022-11-16 11:08:24,026 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 341 transitions, 3998 flow [2022-11-16 11:08:24,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:24,026 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:08:24,026 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:24,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2022-11-16 11:08:24,026 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:08:24,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:24,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1069779538, now seen corresponding path program 124 times [2022-11-16 11:08:24,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:24,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519003230] [2022-11-16 11:08:24,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:24,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:24,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:08:24,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:24,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519003230] [2022-11-16 11:08:24,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519003230] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:24,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:24,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-16 11:08:24,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276081767] [2022-11-16 11:08:24,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:24,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:08:24,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:24,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:08:24,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:08:24,541 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:08:24,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 341 transitions, 3998 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:24,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:08:24,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:08:24,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:08:26,189 INFO L130 PetriNetUnfolder]: 281/844 cut-off events. [2022-11-16 11:08:26,189 INFO L131 PetriNetUnfolder]: For 7982/7982 co-relation queries the response was YES. [2022-11-16 11:08:26,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5693 conditions, 844 events. 281/844 cut-off events. For 7982/7982 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4452 event pairs, 49 based on Foata normal form. 1/843 useless extension candidates. Maximal degree in co-relation 5569. Up to 582 conditions per place. [2022-11-16 11:08:26,197 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 234 selfloop transitions, 77 changer transitions 16/366 dead transitions. [2022-11-16 11:08:26,197 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 366 transitions, 4866 flow [2022-11-16 11:08:26,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 11:08:26,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-16 11:08:26,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1734 transitions. [2022-11-16 11:08:26,199 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5589941972920697 [2022-11-16 11:08:26,199 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1734 transitions. [2022-11-16 11:08:26,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1734 transitions. [2022-11-16 11:08:26,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:08:26,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1734 transitions. [2022-11-16 11:08:26,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 52.54545454545455) internal successors, (1734), 33 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:26,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:26,202 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:26,202 INFO L175 Difference]: Start difference. First operand has 380 places, 341 transitions, 3998 flow. Second operand 33 states and 1734 transitions. [2022-11-16 11:08:26,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 366 transitions, 4866 flow [2022-11-16 11:08:26,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 366 transitions, 4468 flow, removed 64 selfloop flow, removed 36 redundant places. [2022-11-16 11:08:26,275 INFO L231 Difference]: Finished difference. Result has 377 places, 340 transitions, 3786 flow [2022-11-16 11:08:26,275 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3613, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=3786, PETRI_PLACES=377, PETRI_TRANSITIONS=340} [2022-11-16 11:08:26,275 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 289 predicate places. [2022-11-16 11:08:26,275 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 340 transitions, 3786 flow [2022-11-16 11:08:26,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:26,276 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:08:26,276 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:26,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2022-11-16 11:08:26,276 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:08:26,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:26,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1835452708, now seen corresponding path program 125 times [2022-11-16 11:08:26,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:26,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034699868] [2022-11-16 11:08:26,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:26,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:26,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:26,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:08:26,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:26,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034699868] [2022-11-16 11:08:26,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034699868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:26,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:26,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-16 11:08:26,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868443994] [2022-11-16 11:08:26,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:26,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:08:26,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:26,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:08:26,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:08:26,783 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:08:26,783 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 340 transitions, 3786 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:26,783 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:08:26,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:08:26,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:08:28,436 INFO L130 PetriNetUnfolder]: 286/870 cut-off events. [2022-11-16 11:08:28,436 INFO L131 PetriNetUnfolder]: For 8039/8039 co-relation queries the response was YES. [2022-11-16 11:08:28,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5715 conditions, 870 events. 286/870 cut-off events. For 8039/8039 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4690 event pairs, 58 based on Foata normal form. 1/869 useless extension candidates. Maximal degree in co-relation 5588. Up to 563 conditions per place. [2022-11-16 11:08:28,444 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 223 selfloop transitions, 107 changer transitions 17/386 dead transitions. [2022-11-16 11:08:28,444 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 386 transitions, 4935 flow [2022-11-16 11:08:28,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-16 11:08:28,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-16 11:08:28,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1943 transitions. [2022-11-16 11:08:28,446 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.558654399079931 [2022-11-16 11:08:28,447 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1943 transitions. [2022-11-16 11:08:28,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1943 transitions. [2022-11-16 11:08:28,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:08:28,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1943 transitions. [2022-11-16 11:08:28,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.513513513513516) internal successors, (1943), 37 states have internal predecessors, (1943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:28,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:28,451 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:28,451 INFO L175 Difference]: Start difference. First operand has 377 places, 340 transitions, 3786 flow. Second operand 37 states and 1943 transitions. [2022-11-16 11:08:28,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 386 transitions, 4935 flow [2022-11-16 11:08:28,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 386 transitions, 4730 flow, removed 24 selfloop flow, removed 32 redundant places. [2022-11-16 11:08:28,520 INFO L231 Difference]: Finished difference. Result has 386 places, 356 transitions, 4125 flow [2022-11-16 11:08:28,521 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3607, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=4125, PETRI_PLACES=386, PETRI_TRANSITIONS=356} [2022-11-16 11:08:28,521 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 298 predicate places. [2022-11-16 11:08:28,521 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 356 transitions, 4125 flow [2022-11-16 11:08:28,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:28,522 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:08:28,522 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:28,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2022-11-16 11:08:28,522 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:08:28,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:28,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1567221218, now seen corresponding path program 126 times [2022-11-16 11:08:28,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:28,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695095894] [2022-11-16 11:08:28,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:28,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:28,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:29,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:08:29,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:29,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695095894] [2022-11-16 11:08:29,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695095894] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:29,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:29,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 11:08:29,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678986383] [2022-11-16 11:08:29,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:29,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 11:08:29,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:29,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 11:08:29,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:08:29,182 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:08:29,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 356 transitions, 4125 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:29,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:08:29,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:08:29,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:08:31,025 INFO L130 PetriNetUnfolder]: 283/877 cut-off events. [2022-11-16 11:08:31,025 INFO L131 PetriNetUnfolder]: For 8094/8094 co-relation queries the response was YES. [2022-11-16 11:08:31,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5791 conditions, 877 events. 283/877 cut-off events. For 8094/8094 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 4769 event pairs, 59 based on Foata normal form. 1/875 useless extension candidates. Maximal degree in co-relation 5660. Up to 500 conditions per place. [2022-11-16 11:08:31,034 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 177 selfloop transitions, 99 changer transitions 67/382 dead transitions. [2022-11-16 11:08:31,035 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 382 transitions, 5028 flow [2022-11-16 11:08:31,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-16 11:08:31,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-16 11:08:31,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 2142 transitions. [2022-11-16 11:08:31,037 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5557861961598339 [2022-11-16 11:08:31,037 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 2142 transitions. [2022-11-16 11:08:31,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 2142 transitions. [2022-11-16 11:08:31,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:08:31,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 2142 transitions. [2022-11-16 11:08:31,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 52.24390243902439) internal successors, (2142), 41 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:31,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:31,041 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:31,041 INFO L175 Difference]: Start difference. First operand has 386 places, 356 transitions, 4125 flow. Second operand 41 states and 2142 transitions. [2022-11-16 11:08:31,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 382 transitions, 5028 flow [2022-11-16 11:08:31,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 382 transitions, 4835 flow, removed 39 selfloop flow, removed 26 redundant places. [2022-11-16 11:08:31,112 INFO L231 Difference]: Finished difference. Result has 401 places, 305 transitions, 3436 flow [2022-11-16 11:08:31,112 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3940, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=3436, PETRI_PLACES=401, PETRI_TRANSITIONS=305} [2022-11-16 11:08:31,113 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 313 predicate places. [2022-11-16 11:08:31,113 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 305 transitions, 3436 flow [2022-11-16 11:08:31,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:31,113 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:08:31,113 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:31,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2022-11-16 11:08:31,113 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:08:31,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:31,114 INFO L85 PathProgramCache]: Analyzing trace with hash 555859176, now seen corresponding path program 127 times [2022-11-16 11:08:31,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:31,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526103825] [2022-11-16 11:08:31,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:31,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:31,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:31,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:08:31,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:31,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526103825] [2022-11-16 11:08:31,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526103825] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:31,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:31,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-16 11:08:31,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029930887] [2022-11-16 11:08:31,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:31,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:08:31,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:31,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:08:31,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:08:31,716 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:08:31,717 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 305 transitions, 3436 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:31,717 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:08:31,717 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:08:31,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:08:33,402 INFO L130 PetriNetUnfolder]: 261/813 cut-off events. [2022-11-16 11:08:33,402 INFO L131 PetriNetUnfolder]: For 8703/8703 co-relation queries the response was YES. [2022-11-16 11:08:33,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5402 conditions, 813 events. 261/813 cut-off events. For 8703/8703 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 4297 event pairs, 44 based on Foata normal form. 1/811 useless extension candidates. Maximal degree in co-relation 5268. Up to 492 conditions per place. [2022-11-16 11:08:33,410 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 167 selfloop transitions, 92 changer transitions 41/339 dead transitions. [2022-11-16 11:08:33,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 339 transitions, 4397 flow [2022-11-16 11:08:33,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-16 11:08:33,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-16 11:08:33,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2045 transitions. [2022-11-16 11:08:33,413 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5578286961265685 [2022-11-16 11:08:33,413 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2045 transitions. [2022-11-16 11:08:33,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2045 transitions. [2022-11-16 11:08:33,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:08:33,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2045 transitions. [2022-11-16 11:08:33,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 52.43589743589744) internal successors, (2045), 39 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:33,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:33,417 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:33,417 INFO L175 Difference]: Start difference. First operand has 401 places, 305 transitions, 3436 flow. Second operand 39 states and 2045 transitions. [2022-11-16 11:08:33,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 339 transitions, 4397 flow [2022-11-16 11:08:33,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 339 transitions, 3963 flow, removed 59 selfloop flow, removed 52 redundant places. [2022-11-16 11:08:33,479 INFO L231 Difference]: Finished difference. Result has 378 places, 288 transitions, 3098 flow [2022-11-16 11:08:33,479 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3051, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=3098, PETRI_PLACES=378, PETRI_TRANSITIONS=288} [2022-11-16 11:08:33,480 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 290 predicate places. [2022-11-16 11:08:33,480 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 288 transitions, 3098 flow [2022-11-16 11:08:33,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:33,480 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:08:33,480 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:33,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2022-11-16 11:08:33,480 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:08:33,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:33,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1560481334, now seen corresponding path program 128 times [2022-11-16 11:08:33,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:33,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069628919] [2022-11-16 11:08:33,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:33,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:34,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:08:34,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:34,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069628919] [2022-11-16 11:08:34,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069628919] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:34,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:34,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 11:08:34,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292025682] [2022-11-16 11:08:34,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:34,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 11:08:34,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:34,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 11:08:34,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:08:34,025 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:08:34,026 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 288 transitions, 3098 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:34,026 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:08:34,026 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:08:34,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:08:35,807 INFO L130 PetriNetUnfolder]: 250/761 cut-off events. [2022-11-16 11:08:35,807 INFO L131 PetriNetUnfolder]: For 7767/7767 co-relation queries the response was YES. [2022-11-16 11:08:35,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5036 conditions, 761 events. 250/761 cut-off events. For 7767/7767 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3868 event pairs, 49 based on Foata normal form. 1/760 useless extension candidates. Maximal degree in co-relation 4909. Up to 486 conditions per place. [2022-11-16 11:08:35,816 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 160 selfloop transitions, 99 changer transitions 15/313 dead transitions. [2022-11-16 11:08:35,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 313 transitions, 3913 flow [2022-11-16 11:08:35,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-16 11:08:35,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-16 11:08:35,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2092 transitions. [2022-11-16 11:08:35,819 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5563829787234043 [2022-11-16 11:08:35,819 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2092 transitions. [2022-11-16 11:08:35,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2092 transitions. [2022-11-16 11:08:35,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:08:35,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2092 transitions. [2022-11-16 11:08:35,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 52.3) internal successors, (2092), 40 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:35,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:35,824 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:35,824 INFO L175 Difference]: Start difference. First operand has 378 places, 288 transitions, 3098 flow. Second operand 40 states and 2092 transitions. [2022-11-16 11:08:35,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 313 transitions, 3913 flow [2022-11-16 11:08:35,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 313 transitions, 3609 flow, removed 77 selfloop flow, removed 35 redundant places. [2022-11-16 11:08:35,881 INFO L231 Difference]: Finished difference. Result has 382 places, 288 transitions, 3102 flow [2022-11-16 11:08:35,881 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2806, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=3102, PETRI_PLACES=382, PETRI_TRANSITIONS=288} [2022-11-16 11:08:35,882 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 294 predicate places. [2022-11-16 11:08:35,882 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 288 transitions, 3102 flow [2022-11-16 11:08:35,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:35,882 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:08:35,883 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:35,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2022-11-16 11:08:35,883 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:08:35,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:35,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1865751286, now seen corresponding path program 129 times [2022-11-16 11:08:35,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:35,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694932306] [2022-11-16 11:08:35,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:35,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:35,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:36,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:08:36,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:36,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694932306] [2022-11-16 11:08:36,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694932306] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:36,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:36,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:08:36,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923593934] [2022-11-16 11:08:36,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:36,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:08:36,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:36,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:08:36,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:08:36,413 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:08:36,414 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 288 transitions, 3102 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:36,414 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:08:36,414 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:08:36,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:08:37,882 INFO L130 PetriNetUnfolder]: 248/757 cut-off events. [2022-11-16 11:08:37,882 INFO L131 PetriNetUnfolder]: For 7445/7445 co-relation queries the response was YES. [2022-11-16 11:08:37,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4980 conditions, 757 events. 248/757 cut-off events. For 7445/7445 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3859 event pairs, 51 based on Foata normal form. 1/755 useless extension candidates. Maximal degree in co-relation 4852. Up to 506 conditions per place. [2022-11-16 11:08:37,889 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 180 selfloop transitions, 67 changer transitions 22/308 dead transitions. [2022-11-16 11:08:37,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 308 transitions, 3734 flow [2022-11-16 11:08:37,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 11:08:37,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-16 11:08:37,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1679 transitions. [2022-11-16 11:08:37,891 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5581781914893617 [2022-11-16 11:08:37,891 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1679 transitions. [2022-11-16 11:08:37,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1679 transitions. [2022-11-16 11:08:37,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:08:37,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1679 transitions. [2022-11-16 11:08:37,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.46875) internal successors, (1679), 32 states have internal predecessors, (1679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:37,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:37,894 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:37,895 INFO L175 Difference]: Start difference. First operand has 382 places, 288 transitions, 3102 flow. Second operand 32 states and 1679 transitions. [2022-11-16 11:08:37,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 308 transitions, 3734 flow [2022-11-16 11:08:37,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 308 transitions, 3433 flow, removed 53 selfloop flow, removed 38 redundant places. [2022-11-16 11:08:37,959 INFO L231 Difference]: Finished difference. Result has 375 places, 277 transitions, 2826 flow [2022-11-16 11:08:37,959 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2807, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2826, PETRI_PLACES=375, PETRI_TRANSITIONS=277} [2022-11-16 11:08:37,960 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 287 predicate places. [2022-11-16 11:08:37,960 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 277 transitions, 2826 flow [2022-11-16 11:08:37,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:37,960 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:08:37,960 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:37,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2022-11-16 11:08:37,960 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:08:37,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:37,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1223279382, now seen corresponding path program 130 times [2022-11-16 11:08:37,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:37,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225464772] [2022-11-16 11:08:37,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:37,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:37,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:38,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:08:38,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:38,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225464772] [2022-11-16 11:08:38,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225464772] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:38,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:38,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-16 11:08:38,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060384867] [2022-11-16 11:08:38,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:38,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:08:38,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:38,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:08:38,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:08:38,596 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:08:38,596 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 277 transitions, 2826 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:38,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:08:38,597 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:08:38,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:08:40,127 INFO L130 PetriNetUnfolder]: 244/742 cut-off events. [2022-11-16 11:08:40,127 INFO L131 PetriNetUnfolder]: For 6788/6788 co-relation queries the response was YES. [2022-11-16 11:08:40,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4766 conditions, 742 events. 244/742 cut-off events. For 6788/6788 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3709 event pairs, 57 based on Foata normal form. 1/742 useless extension candidates. Maximal degree in co-relation 4638. Up to 501 conditions per place. [2022-11-16 11:08:40,134 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 173 selfloop transitions, 58 changer transitions 26/296 dead transitions. [2022-11-16 11:08:40,134 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 296 transitions, 3422 flow [2022-11-16 11:08:40,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 11:08:40,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-16 11:08:40,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1626 transitions. [2022-11-16 11:08:40,136 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5579958819492107 [2022-11-16 11:08:40,136 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1626 transitions. [2022-11-16 11:08:40,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1626 transitions. [2022-11-16 11:08:40,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:08:40,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1626 transitions. [2022-11-16 11:08:40,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 52.45161290322581) internal successors, (1626), 31 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:40,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:40,139 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:40,139 INFO L175 Difference]: Start difference. First operand has 375 places, 277 transitions, 2826 flow. Second operand 31 states and 1626 transitions. [2022-11-16 11:08:40,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 296 transitions, 3422 flow [2022-11-16 11:08:40,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 296 transitions, 3175 flow, removed 15 selfloop flow, removed 42 redundant places. [2022-11-16 11:08:40,193 INFO L231 Difference]: Finished difference. Result has 355 places, 261 transitions, 2558 flow [2022-11-16 11:08:40,193 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2583, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2558, PETRI_PLACES=355, PETRI_TRANSITIONS=261} [2022-11-16 11:08:40,193 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 267 predicate places. [2022-11-16 11:08:40,193 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 261 transitions, 2558 flow [2022-11-16 11:08:40,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:40,194 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:08:40,194 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:40,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2022-11-16 11:08:40,194 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:08:40,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:40,195 INFO L85 PathProgramCache]: Analyzing trace with hash 197787322, now seen corresponding path program 131 times [2022-11-16 11:08:40,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:40,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488152327] [2022-11-16 11:08:40,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:40,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:40,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:40,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:08:40,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:40,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488152327] [2022-11-16 11:08:40,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488152327] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:40,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:40,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-16 11:08:40,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898048639] [2022-11-16 11:08:40,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:40,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:08:40,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:40,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:08:40,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:08:40,753 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:08:40,754 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 261 transitions, 2558 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:40,754 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:08:40,754 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:08:40,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:08:42,261 INFO L130 PetriNetUnfolder]: 238/710 cut-off events. [2022-11-16 11:08:42,261 INFO L131 PetriNetUnfolder]: For 6439/6439 co-relation queries the response was YES. [2022-11-16 11:08:42,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4543 conditions, 710 events. 238/710 cut-off events. For 6439/6439 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3475 event pairs, 57 based on Foata normal form. 1/710 useless extension candidates. Maximal degree in co-relation 4424. Up to 466 conditions per place. [2022-11-16 11:08:42,266 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 144 selfloop transitions, 77 changer transitions 19/279 dead transitions. [2022-11-16 11:08:42,266 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 279 transitions, 3119 flow [2022-11-16 11:08:42,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 11:08:42,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-16 11:08:42,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1783 transitions. [2022-11-16 11:08:42,268 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5578848560700876 [2022-11-16 11:08:42,268 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1783 transitions. [2022-11-16 11:08:42,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1783 transitions. [2022-11-16 11:08:42,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:08:42,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1783 transitions. [2022-11-16 11:08:42,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.44117647058823) internal successors, (1783), 34 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:42,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:42,271 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:42,271 INFO L175 Difference]: Start difference. First operand has 355 places, 261 transitions, 2558 flow. Second operand 34 states and 1783 transitions. [2022-11-16 11:08:42,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 279 transitions, 3119 flow [2022-11-16 11:08:42,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 279 transitions, 2884 flow, removed 15 selfloop flow, removed 34 redundant places. [2022-11-16 11:08:42,322 INFO L231 Difference]: Finished difference. Result has 339 places, 250 transitions, 2411 flow [2022-11-16 11:08:42,322 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2329, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2411, PETRI_PLACES=339, PETRI_TRANSITIONS=250} [2022-11-16 11:08:42,322 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 251 predicate places. [2022-11-16 11:08:42,322 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 250 transitions, 2411 flow [2022-11-16 11:08:42,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:42,323 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:08:42,323 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:42,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2022-11-16 11:08:42,323 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:08:42,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:42,323 INFO L85 PathProgramCache]: Analyzing trace with hash -989232080, now seen corresponding path program 132 times [2022-11-16 11:08:42,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:42,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380356209] [2022-11-16 11:08:42,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:42,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:42,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:42,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:08:42,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:42,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380356209] [2022-11-16 11:08:42,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380356209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:42,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:42,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-16 11:08:42,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817917036] [2022-11-16 11:08:42,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:42,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:08:42,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:42,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:08:42,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:08:42,819 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:08:42,820 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 250 transitions, 2411 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:42,820 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:08:42,820 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:08:42,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:08:44,203 INFO L130 PetriNetUnfolder]: 233/692 cut-off events. [2022-11-16 11:08:44,204 INFO L131 PetriNetUnfolder]: For 5696/5696 co-relation queries the response was YES. [2022-11-16 11:08:44,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4346 conditions, 692 events. 233/692 cut-off events. For 5696/5696 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3319 event pairs, 60 based on Foata normal form. 1/691 useless extension candidates. Maximal degree in co-relation 4233. Up to 469 conditions per place. [2022-11-16 11:08:44,209 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 144 selfloop transitions, 65 changer transitions 19/267 dead transitions. [2022-11-16 11:08:44,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 267 transitions, 2945 flow [2022-11-16 11:08:44,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 11:08:44,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-16 11:08:44,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1774 transitions. [2022-11-16 11:08:44,211 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5550688360450563 [2022-11-16 11:08:44,212 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1774 transitions. [2022-11-16 11:08:44,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1774 transitions. [2022-11-16 11:08:44,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:08:44,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1774 transitions. [2022-11-16 11:08:44,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.1764705882353) internal successors, (1774), 34 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:44,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:44,215 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:44,215 INFO L175 Difference]: Start difference. First operand has 339 places, 250 transitions, 2411 flow. Second operand 34 states and 1774 transitions. [2022-11-16 11:08:44,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 267 transitions, 2945 flow [2022-11-16 11:08:44,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 267 transitions, 2703 flow, removed 13 selfloop flow, removed 37 redundant places. [2022-11-16 11:08:44,260 INFO L231 Difference]: Finished difference. Result has 326 places, 239 transitions, 2238 flow [2022-11-16 11:08:44,260 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2175, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2238, PETRI_PLACES=326, PETRI_TRANSITIONS=239} [2022-11-16 11:08:44,261 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 238 predicate places. [2022-11-16 11:08:44,261 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 239 transitions, 2238 flow [2022-11-16 11:08:44,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:44,261 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:08:44,261 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:44,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2022-11-16 11:08:44,261 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:08:44,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:44,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1383495034, now seen corresponding path program 133 times [2022-11-16 11:08:44,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:44,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047865321] [2022-11-16 11:08:44,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:44,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:44,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:44,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:08:44,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:44,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047865321] [2022-11-16 11:08:44,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047865321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:44,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:44,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-16 11:08:44,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135789571] [2022-11-16 11:08:44,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:44,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:08:44,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:44,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:08:44,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:08:44,804 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:08:44,804 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 239 transitions, 2238 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:44,804 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:08:44,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:08:44,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:08:46,331 INFO L130 PetriNetUnfolder]: 230/676 cut-off events. [2022-11-16 11:08:46,331 INFO L131 PetriNetUnfolder]: For 5231/5231 co-relation queries the response was YES. [2022-11-16 11:08:46,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4189 conditions, 676 events. 230/676 cut-off events. For 5231/5231 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3210 event pairs, 60 based on Foata normal form. 1/675 useless extension candidates. Maximal degree in co-relation 4081. Up to 450 conditions per place. [2022-11-16 11:08:46,336 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 131 selfloop transitions, 61 changer transitions 27/258 dead transitions. [2022-11-16 11:08:46,337 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 258 transitions, 2756 flow [2022-11-16 11:08:46,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 11:08:46,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-16 11:08:46,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1781 transitions. [2022-11-16 11:08:46,339 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5572590738423029 [2022-11-16 11:08:46,339 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1781 transitions. [2022-11-16 11:08:46,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1781 transitions. [2022-11-16 11:08:46,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:08:46,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1781 transitions. [2022-11-16 11:08:46,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.38235294117647) internal successors, (1781), 34 states have internal predecessors, (1781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:46,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:46,342 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:46,342 INFO L175 Difference]: Start difference. First operand has 326 places, 239 transitions, 2238 flow. Second operand 34 states and 1781 transitions. [2022-11-16 11:08:46,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 258 transitions, 2756 flow [2022-11-16 11:08:46,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 258 transitions, 2548 flow, removed 11 selfloop flow, removed 39 redundant places. [2022-11-16 11:08:46,377 INFO L231 Difference]: Finished difference. Result has 312 places, 222 transitions, 2037 flow [2022-11-16 11:08:46,377 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2036, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2037, PETRI_PLACES=312, PETRI_TRANSITIONS=222} [2022-11-16 11:08:46,377 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 224 predicate places. [2022-11-16 11:08:46,377 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 222 transitions, 2037 flow [2022-11-16 11:08:46,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:46,377 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:08:46,378 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:46,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2022-11-16 11:08:46,378 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:08:46,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:46,378 INFO L85 PathProgramCache]: Analyzing trace with hash -581400274, now seen corresponding path program 134 times [2022-11-16 11:08:46,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:46,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214891246] [2022-11-16 11:08:46,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:46,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:46,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:08:46,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:46,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214891246] [2022-11-16 11:08:46,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214891246] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:46,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:46,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 11:08:46,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10737442] [2022-11-16 11:08:46,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:46,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 11:08:46,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:46,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 11:08:46,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:08:46,989 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:08:46,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 222 transitions, 2037 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:46,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:08:46,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:08:46,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:08:48,454 INFO L130 PetriNetUnfolder]: 223/655 cut-off events. [2022-11-16 11:08:48,454 INFO L131 PetriNetUnfolder]: For 4651/4651 co-relation queries the response was YES. [2022-11-16 11:08:48,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3981 conditions, 655 events. 223/655 cut-off events. For 4651/4651 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3050 event pairs, 58 based on Foata normal form. 1/654 useless extension candidates. Maximal degree in co-relation 3878. Up to 447 conditions per place. [2022-11-16 11:08:48,459 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 128 selfloop transitions, 55 changer transitions 19/241 dead transitions. [2022-11-16 11:08:48,459 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 241 transitions, 2521 flow [2022-11-16 11:08:48,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 11:08:48,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-16 11:08:48,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1668 transitions. [2022-11-16 11:08:48,462 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5545212765957447 [2022-11-16 11:08:48,462 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1668 transitions. [2022-11-16 11:08:48,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1668 transitions. [2022-11-16 11:08:48,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:08:48,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1668 transitions. [2022-11-16 11:08:48,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.125) internal successors, (1668), 32 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:48,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:48,467 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:48,467 INFO L175 Difference]: Start difference. First operand has 312 places, 222 transitions, 2037 flow. Second operand 32 states and 1668 transitions. [2022-11-16 11:08:48,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 241 transitions, 2521 flow [2022-11-16 11:08:48,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 241 transitions, 2313 flow, removed 14 selfloop flow, removed 36 redundant places. [2022-11-16 11:08:48,498 INFO L231 Difference]: Finished difference. Result has 292 places, 213 transitions, 1895 flow [2022-11-16 11:08:48,498 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1835, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1895, PETRI_PLACES=292, PETRI_TRANSITIONS=213} [2022-11-16 11:08:48,498 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 204 predicate places. [2022-11-16 11:08:48,498 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 213 transitions, 1895 flow [2022-11-16 11:08:48,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:48,498 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:08:48,499 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:48,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2022-11-16 11:08:48,499 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:08:48,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:48,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1296539176, now seen corresponding path program 135 times [2022-11-16 11:08:48,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:48,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148092927] [2022-11-16 11:08:48,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:48,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:48,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:49,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:08:49,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:49,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148092927] [2022-11-16 11:08:49,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148092927] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:49,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:49,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 11:08:49,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305031834] [2022-11-16 11:08:49,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:49,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 11:08:49,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:49,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 11:08:49,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:08:49,019 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:08:49,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 213 transitions, 1895 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:49,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:08:49,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:08:49,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:08:50,385 INFO L130 PetriNetUnfolder]: 221/639 cut-off events. [2022-11-16 11:08:50,385 INFO L131 PetriNetUnfolder]: For 4757/4757 co-relation queries the response was YES. [2022-11-16 11:08:50,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3859 conditions, 639 events. 221/639 cut-off events. For 4757/4757 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2912 event pairs, 43 based on Foata normal form. 1/638 useless extension candidates. Maximal degree in co-relation 3761. Up to 433 conditions per place. [2022-11-16 11:08:50,394 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 116 selfloop transitions, 46 changer transitions 31/232 dead transitions. [2022-11-16 11:08:50,394 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 232 transitions, 2361 flow [2022-11-16 11:08:50,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 11:08:50,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-16 11:08:50,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1670 transitions. [2022-11-16 11:08:50,397 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.555186170212766 [2022-11-16 11:08:50,397 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1670 transitions. [2022-11-16 11:08:50,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1670 transitions. [2022-11-16 11:08:50,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:08:50,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1670 transitions. [2022-11-16 11:08:50,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.1875) internal successors, (1670), 32 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:50,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:50,402 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:50,402 INFO L175 Difference]: Start difference. First operand has 292 places, 213 transitions, 1895 flow. Second operand 32 states and 1670 transitions. [2022-11-16 11:08:50,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 232 transitions, 2361 flow [2022-11-16 11:08:50,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 232 transitions, 2157 flow, removed 12 selfloop flow, removed 29 redundant places. [2022-11-16 11:08:50,451 INFO L231 Difference]: Finished difference. Result has 280 places, 193 transitions, 1667 flow [2022-11-16 11:08:50,451 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1697, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1667, PETRI_PLACES=280, PETRI_TRANSITIONS=193} [2022-11-16 11:08:50,452 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 192 predicate places. [2022-11-16 11:08:50,452 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 193 transitions, 1667 flow [2022-11-16 11:08:50,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:50,452 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:08:50,453 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:50,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2022-11-16 11:08:50,453 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:08:50,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:50,453 INFO L85 PathProgramCache]: Analyzing trace with hash 506806154, now seen corresponding path program 136 times [2022-11-16 11:08:50,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:50,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855204628] [2022-11-16 11:08:50,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:50,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:50,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:08:50,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:50,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855204628] [2022-11-16 11:08:50,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855204628] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:50,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:50,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:08:50,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532340693] [2022-11-16 11:08:50,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:50,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:08:50,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:50,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:08:50,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:08:50,966 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:08:50,966 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 193 transitions, 1667 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:50,966 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:08:50,966 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:08:50,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:08:52,534 INFO L130 PetriNetUnfolder]: 243/678 cut-off events. [2022-11-16 11:08:52,534 INFO L131 PetriNetUnfolder]: For 4913/4913 co-relation queries the response was YES. [2022-11-16 11:08:52,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4086 conditions, 678 events. 243/678 cut-off events. For 4913/4913 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3179 event pairs, 56 based on Foata normal form. 1/677 useless extension candidates. Maximal degree in co-relation 3992. Up to 408 conditions per place. [2022-11-16 11:08:52,539 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 117 selfloop transitions, 66 changer transitions 35/257 dead transitions. [2022-11-16 11:08:52,539 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 257 transitions, 2836 flow [2022-11-16 11:08:52,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 11:08:52,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-16 11:08:52,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1812 transitions. [2022-11-16 11:08:52,541 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5669586983729662 [2022-11-16 11:08:52,541 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1812 transitions. [2022-11-16 11:08:52,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1812 transitions. [2022-11-16 11:08:52,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:08:52,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1812 transitions. [2022-11-16 11:08:52,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.294117647058826) internal successors, (1812), 34 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:52,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:52,545 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:52,545 INFO L175 Difference]: Start difference. First operand has 280 places, 193 transitions, 1667 flow. Second operand 34 states and 1812 transitions. [2022-11-16 11:08:52,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 257 transitions, 2836 flow [2022-11-16 11:08:52,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 257 transitions, 2453 flow, removed 70 selfloop flow, removed 28 redundant places. [2022-11-16 11:08:52,571 INFO L231 Difference]: Finished difference. Result has 264 places, 203 transitions, 1725 flow [2022-11-16 11:08:52,571 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1380, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1725, PETRI_PLACES=264, PETRI_TRANSITIONS=203} [2022-11-16 11:08:52,571 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 176 predicate places. [2022-11-16 11:08:52,571 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 203 transitions, 1725 flow [2022-11-16 11:08:52,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:52,572 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:08:52,572 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:52,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2022-11-16 11:08:52,572 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:08:52,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:52,573 INFO L85 PathProgramCache]: Analyzing trace with hash -591456042, now seen corresponding path program 137 times [2022-11-16 11:08:52,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:52,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032655385] [2022-11-16 11:08:52,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:52,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:52,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:53,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:08:53,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:53,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032655385] [2022-11-16 11:08:53,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032655385] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:53,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:53,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-16 11:08:53,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205519065] [2022-11-16 11:08:53,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:53,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:08:53,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:53,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:08:53,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:08:53,017 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:08:53,017 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 203 transitions, 1725 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:53,017 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:08:53,017 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:08:53,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:08:54,538 INFO L130 PetriNetUnfolder]: 289/796 cut-off events. [2022-11-16 11:08:54,539 INFO L131 PetriNetUnfolder]: For 7118/7118 co-relation queries the response was YES. [2022-11-16 11:08:54,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4889 conditions, 796 events. 289/796 cut-off events. For 7118/7118 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3866 event pairs, 57 based on Foata normal form. 1/795 useless extension candidates. Maximal degree in co-relation 4796. Up to 473 conditions per place. [2022-11-16 11:08:54,545 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 150 selfloop transitions, 99 changer transitions 21/309 dead transitions. [2022-11-16 11:08:54,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 309 transitions, 3748 flow [2022-11-16 11:08:54,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 11:08:54,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 11:08:54,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1873 transitions. [2022-11-16 11:08:54,547 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5693009118541034 [2022-11-16 11:08:54,547 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1873 transitions. [2022-11-16 11:08:54,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1873 transitions. [2022-11-16 11:08:54,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:08:54,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1873 transitions. [2022-11-16 11:08:54,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.51428571428571) internal successors, (1873), 35 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:54,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:54,551 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:54,551 INFO L175 Difference]: Start difference. First operand has 264 places, 203 transitions, 1725 flow. Second operand 35 states and 1873 transitions. [2022-11-16 11:08:54,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 309 transitions, 3748 flow [2022-11-16 11:08:54,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 309 transitions, 3334 flow, removed 154 selfloop flow, removed 28 redundant places. [2022-11-16 11:08:54,586 INFO L231 Difference]: Finished difference. Result has 273 places, 257 transitions, 2635 flow [2022-11-16 11:08:54,586 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1527, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2635, PETRI_PLACES=273, PETRI_TRANSITIONS=257} [2022-11-16 11:08:54,586 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 185 predicate places. [2022-11-16 11:08:54,586 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 257 transitions, 2635 flow [2022-11-16 11:08:54,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:54,587 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:08:54,587 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:54,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2022-11-16 11:08:54,587 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:08:54,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:54,587 INFO L85 PathProgramCache]: Analyzing trace with hash 38226082, now seen corresponding path program 138 times [2022-11-16 11:08:54,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:54,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755050201] [2022-11-16 11:08:54,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:54,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:54,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:55,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:08:55,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:55,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755050201] [2022-11-16 11:08:55,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755050201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:55,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:55,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:08:55,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443304844] [2022-11-16 11:08:55,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:55,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:08:55,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:55,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:08:55,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:08:55,059 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:08:55,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 257 transitions, 2635 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:55,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:08:55,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:08:55,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:08:57,002 INFO L130 PetriNetUnfolder]: 339/912 cut-off events. [2022-11-16 11:08:57,002 INFO L131 PetriNetUnfolder]: For 10717/10717 co-relation queries the response was YES. [2022-11-16 11:08:57,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6149 conditions, 912 events. 339/912 cut-off events. For 10717/10717 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 4646 event pairs, 54 based on Foata normal form. 1/911 useless extension candidates. Maximal degree in co-relation 6053. Up to 494 conditions per place. [2022-11-16 11:08:57,009 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 145 selfloop transitions, 157 changer transitions 21/362 dead transitions. [2022-11-16 11:08:57,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 362 transitions, 4767 flow [2022-11-16 11:08:57,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-16 11:08:57,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-16 11:08:57,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2125 transitions. [2022-11-16 11:08:57,012 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5651595744680851 [2022-11-16 11:08:57,012 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2125 transitions. [2022-11-16 11:08:57,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2125 transitions. [2022-11-16 11:08:57,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:08:57,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2125 transitions. [2022-11-16 11:08:57,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 53.125) internal successors, (2125), 40 states have internal predecessors, (2125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:57,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:57,015 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:57,016 INFO L175 Difference]: Start difference. First operand has 273 places, 257 transitions, 2635 flow. Second operand 40 states and 2125 transitions. [2022-11-16 11:08:57,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 362 transitions, 4767 flow [2022-11-16 11:08:57,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 362 transitions, 4299 flow, removed 215 selfloop flow, removed 10 redundant places. [2022-11-16 11:08:57,056 INFO L231 Difference]: Finished difference. Result has 310 places, 310 transitions, 3580 flow [2022-11-16 11:08:57,056 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2171, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=3580, PETRI_PLACES=310, PETRI_TRANSITIONS=310} [2022-11-16 11:08:57,056 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 222 predicate places. [2022-11-16 11:08:57,057 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 310 transitions, 3580 flow [2022-11-16 11:08:57,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:57,057 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:08:57,057 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:57,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2022-11-16 11:08:57,058 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:08:57,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:57,058 INFO L85 PathProgramCache]: Analyzing trace with hash -41106020, now seen corresponding path program 139 times [2022-11-16 11:08:57,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:57,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111406345] [2022-11-16 11:08:57,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:57,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:57,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:57,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:08:57,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:57,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111406345] [2022-11-16 11:08:57,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111406345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:57,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:57,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-16 11:08:57,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127887032] [2022-11-16 11:08:57,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:57,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:08:57,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:57,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:08:57,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:08:57,472 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:08:57,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 310 transitions, 3580 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:57,472 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:08:57,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:08:57,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:08:58,828 INFO L130 PetriNetUnfolder]: 348/946 cut-off events. [2022-11-16 11:08:58,828 INFO L131 PetriNetUnfolder]: For 14251/14251 co-relation queries the response was YES. [2022-11-16 11:08:58,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6906 conditions, 946 events. 348/946 cut-off events. For 14251/14251 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 5036 event pairs, 75 based on Foata normal form. 1/945 useless extension candidates. Maximal degree in co-relation 6797. Up to 644 conditions per place. [2022-11-16 11:08:58,836 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 224 selfloop transitions, 73 changer transitions 35/371 dead transitions. [2022-11-16 11:08:58,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 371 transitions, 4956 flow [2022-11-16 11:08:58,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-16 11:08:58,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-16 11:08:58,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1558 transitions. [2022-11-16 11:08:58,838 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5715333822450477 [2022-11-16 11:08:58,839 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1558 transitions. [2022-11-16 11:08:58,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1558 transitions. [2022-11-16 11:08:58,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:08:58,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1558 transitions. [2022-11-16 11:08:58,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 53.724137931034484) internal successors, (1558), 29 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:58,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:58,841 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:58,841 INFO L175 Difference]: Start difference. First operand has 310 places, 310 transitions, 3580 flow. Second operand 29 states and 1558 transitions. [2022-11-16 11:08:58,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 371 transitions, 4956 flow [2022-11-16 11:08:58,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 371 transitions, 4412 flow, removed 241 selfloop flow, removed 15 redundant places. [2022-11-16 11:08:58,911 INFO L231 Difference]: Finished difference. Result has 330 places, 318 transitions, 3392 flow [2022-11-16 11:08:58,911 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3047, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=3392, PETRI_PLACES=330, PETRI_TRANSITIONS=318} [2022-11-16 11:08:58,911 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 242 predicate places. [2022-11-16 11:08:58,911 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 318 transitions, 3392 flow [2022-11-16 11:08:58,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:58,912 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:08:58,912 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:58,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2022-11-16 11:08:58,912 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:08:58,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:58,912 INFO L85 PathProgramCache]: Analyzing trace with hash 704169166, now seen corresponding path program 140 times [2022-11-16 11:08:58,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:58,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238008282] [2022-11-16 11:08:58,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:58,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:59,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:08:59,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:59,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238008282] [2022-11-16 11:08:59,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238008282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:59,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:59,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:08:59,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379720205] [2022-11-16 11:08:59,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:59,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:08:59,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:59,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:08:59,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:08:59,349 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:08:59,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 318 transitions, 3392 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:59,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:08:59,350 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:08:59,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:00,908 INFO L130 PetriNetUnfolder]: 348/956 cut-off events. [2022-11-16 11:09:00,908 INFO L131 PetriNetUnfolder]: For 14783/14783 co-relation queries the response was YES. [2022-11-16 11:09:00,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6944 conditions, 956 events. 348/956 cut-off events. For 14783/14783 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5179 event pairs, 74 based on Foata normal form. 1/955 useless extension candidates. Maximal degree in co-relation 6823. Up to 612 conditions per place. [2022-11-16 11:09:00,916 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 202 selfloop transitions, 105 changer transitions 35/381 dead transitions. [2022-11-16 11:09:00,916 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 381 transitions, 4899 flow [2022-11-16 11:09:00,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 11:09:00,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-16 11:09:00,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1812 transitions. [2022-11-16 11:09:00,918 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5669586983729662 [2022-11-16 11:09:00,918 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1812 transitions. [2022-11-16 11:09:00,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1812 transitions. [2022-11-16 11:09:00,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:00,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1812 transitions. [2022-11-16 11:09:00,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.294117647058826) internal successors, (1812), 34 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:00,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:00,922 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:00,922 INFO L175 Difference]: Start difference. First operand has 330 places, 318 transitions, 3392 flow. Second operand 34 states and 1812 transitions. [2022-11-16 11:09:00,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 381 transitions, 4899 flow [2022-11-16 11:09:00,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 381 transitions, 4604 flow, removed 100 selfloop flow, removed 26 redundant places. [2022-11-16 11:09:00,986 INFO L231 Difference]: Finished difference. Result has 341 places, 326 transitions, 3602 flow [2022-11-16 11:09:00,986 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3175, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=3602, PETRI_PLACES=341, PETRI_TRANSITIONS=326} [2022-11-16 11:09:00,986 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 253 predicate places. [2022-11-16 11:09:00,986 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 326 transitions, 3602 flow [2022-11-16 11:09:00,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:00,986 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:00,987 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:00,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2022-11-16 11:09:00,987 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:09:00,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:00,987 INFO L85 PathProgramCache]: Analyzing trace with hash -513212898, now seen corresponding path program 141 times [2022-11-16 11:09:00,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:00,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346173456] [2022-11-16 11:09:00,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:00,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:00,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:01,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:01,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:01,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346173456] [2022-11-16 11:09:01,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346173456] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:01,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:01,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:09:01,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358593825] [2022-11-16 11:09:01,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:01,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:09:01,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:01,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:09:01,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:09:01,422 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:09:01,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 326 transitions, 3602 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:01,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:01,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:09:01,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:02,953 INFO L130 PetriNetUnfolder]: 354/996 cut-off events. [2022-11-16 11:09:02,953 INFO L131 PetriNetUnfolder]: For 14120/14120 co-relation queries the response was YES. [2022-11-16 11:09:02,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7120 conditions, 996 events. 354/996 cut-off events. For 14120/14120 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5600 event pairs, 65 based on Foata normal form. 1/995 useless extension candidates. Maximal degree in co-relation 6997. Up to 646 conditions per place. [2022-11-16 11:09:02,963 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 223 selfloop transitions, 98 changer transitions 35/395 dead transitions. [2022-11-16 11:09:02,963 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 395 transitions, 5258 flow [2022-11-16 11:09:02,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 11:09:02,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-16 11:09:02,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1756 transitions. [2022-11-16 11:09:02,965 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.56608639587363 [2022-11-16 11:09:02,965 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1756 transitions. [2022-11-16 11:09:02,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1756 transitions. [2022-11-16 11:09:02,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:02,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1756 transitions. [2022-11-16 11:09:02,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.21212121212121) internal successors, (1756), 33 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:02,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:02,969 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:02,969 INFO L175 Difference]: Start difference. First operand has 341 places, 326 transitions, 3602 flow. Second operand 33 states and 1756 transitions. [2022-11-16 11:09:02,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 395 transitions, 5258 flow [2022-11-16 11:09:03,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 395 transitions, 4907 flow, removed 122 selfloop flow, removed 29 redundant places. [2022-11-16 11:09:03,046 INFO L231 Difference]: Finished difference. Result has 348 places, 341 transitions, 3896 flow [2022-11-16 11:09:03,046 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3391, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=3896, PETRI_PLACES=348, PETRI_TRANSITIONS=341} [2022-11-16 11:09:03,047 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 260 predicate places. [2022-11-16 11:09:03,047 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 341 transitions, 3896 flow [2022-11-16 11:09:03,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:03,047 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:03,047 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:03,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2022-11-16 11:09:03,048 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:09:03,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:03,048 INFO L85 PathProgramCache]: Analyzing trace with hash -654896460, now seen corresponding path program 142 times [2022-11-16 11:09:03,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:03,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001342446] [2022-11-16 11:09:03,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:03,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:03,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:03,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:03,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:03,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001342446] [2022-11-16 11:09:03,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001342446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:03,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:03,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:09:03,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458806394] [2022-11-16 11:09:03,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:03,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:09:03,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:03,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:09:03,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:09:03,641 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:09:03,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 341 transitions, 3896 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:03,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:03,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:09:03,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:05,500 INFO L130 PetriNetUnfolder]: 355/999 cut-off events. [2022-11-16 11:09:05,501 INFO L131 PetriNetUnfolder]: For 14015/14015 co-relation queries the response was YES. [2022-11-16 11:09:05,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7188 conditions, 999 events. 355/999 cut-off events. For 14015/14015 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5670 event pairs, 68 based on Foata normal form. 1/997 useless extension candidates. Maximal degree in co-relation 7062. Up to 647 conditions per place. [2022-11-16 11:09:05,509 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 222 selfloop transitions, 102 changer transitions 35/398 dead transitions. [2022-11-16 11:09:05,509 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 398 transitions, 5356 flow [2022-11-16 11:09:05,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 11:09:05,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-16 11:09:05,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1805 transitions. [2022-11-16 11:09:05,511 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5647684605757196 [2022-11-16 11:09:05,511 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1805 transitions. [2022-11-16 11:09:05,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1805 transitions. [2022-11-16 11:09:05,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:05,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1805 transitions. [2022-11-16 11:09:05,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.088235294117645) internal successors, (1805), 34 states have internal predecessors, (1805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:05,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:05,514 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:05,515 INFO L175 Difference]: Start difference. First operand has 348 places, 341 transitions, 3896 flow. Second operand 34 states and 1805 transitions. [2022-11-16 11:09:05,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 398 transitions, 5356 flow [2022-11-16 11:09:05,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 398 transitions, 5126 flow, removed 66 selfloop flow, removed 26 redundant places. [2022-11-16 11:09:05,586 INFO L231 Difference]: Finished difference. Result has 359 places, 344 transitions, 4068 flow [2022-11-16 11:09:05,586 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3708, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=4068, PETRI_PLACES=359, PETRI_TRANSITIONS=344} [2022-11-16 11:09:05,586 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 271 predicate places. [2022-11-16 11:09:05,587 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 344 transitions, 4068 flow [2022-11-16 11:09:05,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:05,587 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:05,587 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:05,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2022-11-16 11:09:05,587 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:09:05,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:05,587 INFO L85 PathProgramCache]: Analyzing trace with hash -489428494, now seen corresponding path program 143 times [2022-11-16 11:09:05,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:05,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419506055] [2022-11-16 11:09:05,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:05,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:05,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:06,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:06,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:06,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419506055] [2022-11-16 11:09:06,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419506055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:06,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:06,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:09:06,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910851014] [2022-11-16 11:09:06,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:06,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:09:06,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:06,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:09:06,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:09:06,029 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:09:06,030 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 344 transitions, 4068 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:06,030 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:06,030 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:09:06,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:07,819 INFO L130 PetriNetUnfolder]: 362/986 cut-off events. [2022-11-16 11:09:07,819 INFO L131 PetriNetUnfolder]: For 14888/14888 co-relation queries the response was YES. [2022-11-16 11:09:07,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7466 conditions, 986 events. 362/986 cut-off events. For 14888/14888 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 5491 event pairs, 57 based on Foata normal form. 1/983 useless extension candidates. Maximal degree in co-relation 7336. Up to 656 conditions per place. [2022-11-16 11:09:07,829 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 228 selfloop transitions, 114 changer transitions 33/414 dead transitions. [2022-11-16 11:09:07,830 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 414 transitions, 5805 flow [2022-11-16 11:09:07,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-16 11:09:07,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-16 11:09:07,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1959 transitions. [2022-11-16 11:09:07,832 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5632547441058079 [2022-11-16 11:09:07,832 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1959 transitions. [2022-11-16 11:09:07,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1959 transitions. [2022-11-16 11:09:07,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:07,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1959 transitions. [2022-11-16 11:09:07,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.945945945945944) internal successors, (1959), 37 states have internal predecessors, (1959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:07,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:07,835 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:07,836 INFO L175 Difference]: Start difference. First operand has 359 places, 344 transitions, 4068 flow. Second operand 37 states and 1959 transitions. [2022-11-16 11:09:07,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 414 transitions, 5805 flow [2022-11-16 11:09:07,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 414 transitions, 5529 flow, removed 65 selfloop flow, removed 31 redundant places. [2022-11-16 11:09:07,913 INFO L231 Difference]: Finished difference. Result has 369 places, 361 transitions, 4508 flow [2022-11-16 11:09:07,913 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3850, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=4508, PETRI_PLACES=369, PETRI_TRANSITIONS=361} [2022-11-16 11:09:07,914 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 281 predicate places. [2022-11-16 11:09:07,914 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 361 transitions, 4508 flow [2022-11-16 11:09:07,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:07,914 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:07,914 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:07,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2022-11-16 11:09:07,915 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:09:07,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:07,915 INFO L85 PathProgramCache]: Analyzing trace with hash -691042608, now seen corresponding path program 144 times [2022-11-16 11:09:07,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:07,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314827106] [2022-11-16 11:09:07,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:07,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:08,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:08,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:08,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314827106] [2022-11-16 11:09:08,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314827106] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:08,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:08,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:09:08,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310320514] [2022-11-16 11:09:08,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:08,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:09:08,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:08,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:09:08,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:09:08,356 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:09:08,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 361 transitions, 4508 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:08,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:08,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:09:08,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:10,126 INFO L130 PetriNetUnfolder]: 353/1010 cut-off events. [2022-11-16 11:09:10,126 INFO L131 PetriNetUnfolder]: For 14351/14351 co-relation queries the response was YES. [2022-11-16 11:09:10,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7486 conditions, 1010 events. 353/1010 cut-off events. For 14351/14351 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 5753 event pairs, 67 based on Foata normal form. 1/1008 useless extension candidates. Maximal degree in co-relation 7353. Up to 648 conditions per place. [2022-11-16 11:09:10,136 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 226 selfloop transitions, 98 changer transitions 43/406 dead transitions. [2022-11-16 11:09:10,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 406 transitions, 5750 flow [2022-11-16 11:09:10,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 11:09:10,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-16 11:09:10,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1805 transitions. [2022-11-16 11:09:10,138 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5647684605757196 [2022-11-16 11:09:10,138 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1805 transitions. [2022-11-16 11:09:10,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1805 transitions. [2022-11-16 11:09:10,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:10,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1805 transitions. [2022-11-16 11:09:10,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.088235294117645) internal successors, (1805), 34 states have internal predecessors, (1805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:10,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:10,142 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:10,142 INFO L175 Difference]: Start difference. First operand has 369 places, 361 transitions, 4508 flow. Second operand 34 states and 1805 transitions. [2022-11-16 11:09:10,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 406 transitions, 5750 flow [2022-11-16 11:09:10,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 406 transitions, 5417 flow, removed 98 selfloop flow, removed 28 redundant places. [2022-11-16 11:09:10,223 INFO L231 Difference]: Finished difference. Result has 376 places, 345 transitions, 4276 flow [2022-11-16 11:09:10,223 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=4211, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=4276, PETRI_PLACES=376, PETRI_TRANSITIONS=345} [2022-11-16 11:09:10,223 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 288 predicate places. [2022-11-16 11:09:10,223 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 345 transitions, 4276 flow [2022-11-16 11:09:10,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:10,224 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:10,224 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:10,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2022-11-16 11:09:10,224 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:09:10,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:10,225 INFO L85 PathProgramCache]: Analyzing trace with hash -2062737244, now seen corresponding path program 145 times [2022-11-16 11:09:10,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:10,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902879899] [2022-11-16 11:09:10,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:10,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:10,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:10,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:10,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:10,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902879899] [2022-11-16 11:09:10,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902879899] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:10,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:10,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-16 11:09:10,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814203187] [2022-11-16 11:09:10,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:10,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:09:10,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:10,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:09:10,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:09:10,736 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:09:10,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 345 transitions, 4276 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:10,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:10,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:09:10,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:13,138 INFO L130 PetriNetUnfolder]: 421/1179 cut-off events. [2022-11-16 11:09:13,138 INFO L131 PetriNetUnfolder]: For 18745/18745 co-relation queries the response was YES. [2022-11-16 11:09:13,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9027 conditions, 1179 events. 421/1179 cut-off events. For 18745/18745 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 6975 event pairs, 66 based on Foata normal form. 1/1177 useless extension candidates. Maximal degree in co-relation 8891. Up to 667 conditions per place. [2022-11-16 11:09:13,152 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 241 selfloop transitions, 218 changer transitions 21/519 dead transitions. [2022-11-16 11:09:13,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 519 transitions, 7845 flow [2022-11-16 11:09:13,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-16 11:09:13,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-11-16 11:09:13,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 2784 transitions. [2022-11-16 11:09:13,155 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5588117221999197 [2022-11-16 11:09:13,155 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 2784 transitions. [2022-11-16 11:09:13,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 2784 transitions. [2022-11-16 11:09:13,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:13,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 2784 transitions. [2022-11-16 11:09:13,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 52.528301886792455) internal successors, (2784), 53 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:13,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 94.0) internal successors, (5076), 54 states have internal predecessors, (5076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:13,161 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 94.0) internal successors, (5076), 54 states have internal predecessors, (5076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:13,161 INFO L175 Difference]: Start difference. First operand has 376 places, 345 transitions, 4276 flow. Second operand 53 states and 2784 transitions. [2022-11-16 11:09:13,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 519 transitions, 7845 flow [2022-11-16 11:09:13,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 519 transitions, 7400 flow, removed 71 selfloop flow, removed 37 redundant places. [2022-11-16 11:09:13,263 INFO L231 Difference]: Finished difference. Result has 396 places, 471 transitions, 6615 flow [2022-11-16 11:09:13,263 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3940, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=6615, PETRI_PLACES=396, PETRI_TRANSITIONS=471} [2022-11-16 11:09:13,264 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 308 predicate places. [2022-11-16 11:09:13,264 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 471 transitions, 6615 flow [2022-11-16 11:09:13,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:13,264 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:13,265 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:13,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2022-11-16 11:09:13,265 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:09:13,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:13,265 INFO L85 PathProgramCache]: Analyzing trace with hash -58120972, now seen corresponding path program 146 times [2022-11-16 11:09:13,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:13,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321171097] [2022-11-16 11:09:13,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:13,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:13,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:13,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:13,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:13,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321171097] [2022-11-16 11:09:13,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321171097] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:13,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:13,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:09:13,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872266426] [2022-11-16 11:09:13,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:13,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:09:13,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:13,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:09:13,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:09:13,739 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:09:13,739 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 471 transitions, 6615 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:13,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:13,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:09:13,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:15,688 INFO L130 PetriNetUnfolder]: 465/1301 cut-off events. [2022-11-16 11:09:15,688 INFO L131 PetriNetUnfolder]: For 25037/25037 co-relation queries the response was YES. [2022-11-16 11:09:15,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10601 conditions, 1301 events. 465/1301 cut-off events. For 25037/25037 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 7944 event pairs, 49 based on Foata normal form. 1/1299 useless extension candidates. Maximal degree in co-relation 10460. Up to 915 conditions per place. [2022-11-16 11:09:15,703 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 398 selfloop transitions, 110 changer transitions 21/568 dead transitions. [2022-11-16 11:09:15,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 568 transitions, 9368 flow [2022-11-16 11:09:15,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-16 11:09:15,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-16 11:09:15,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2128 transitions. [2022-11-16 11:09:15,706 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5659574468085107 [2022-11-16 11:09:15,706 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2128 transitions. [2022-11-16 11:09:15,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2128 transitions. [2022-11-16 11:09:15,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:15,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2128 transitions. [2022-11-16 11:09:15,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 53.2) internal successors, (2128), 40 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:15,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:15,713 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:15,713 INFO L175 Difference]: Start difference. First operand has 396 places, 471 transitions, 6615 flow. Second operand 40 states and 2128 transitions. [2022-11-16 11:09:15,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 568 transitions, 9368 flow [2022-11-16 11:09:15,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 568 transitions, 8366 flow, removed 434 selfloop flow, removed 22 redundant places. [2022-11-16 11:09:15,868 INFO L231 Difference]: Finished difference. Result has 416 places, 525 transitions, 7065 flow [2022-11-16 11:09:15,868 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5649, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=7065, PETRI_PLACES=416, PETRI_TRANSITIONS=525} [2022-11-16 11:09:15,869 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 328 predicate places. [2022-11-16 11:09:15,869 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 525 transitions, 7065 flow [2022-11-16 11:09:15,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:15,869 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:15,869 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:15,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2022-11-16 11:09:15,869 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:09:15,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:15,870 INFO L85 PathProgramCache]: Analyzing trace with hash -865237668, now seen corresponding path program 147 times [2022-11-16 11:09:15,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:15,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118047994] [2022-11-16 11:09:15,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:15,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:16,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:16,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:16,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118047994] [2022-11-16 11:09:16,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118047994] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:16,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:16,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:09:16,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546018981] [2022-11-16 11:09:16,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:16,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:09:16,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:16,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:09:16,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:09:16,341 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:09:16,341 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 525 transitions, 7065 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:16,341 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:16,341 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:09:16,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:18,329 INFO L130 PetriNetUnfolder]: 470/1318 cut-off events. [2022-11-16 11:09:18,329 INFO L131 PetriNetUnfolder]: For 26049/26049 co-relation queries the response was YES. [2022-11-16 11:09:18,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10593 conditions, 1318 events. 470/1318 cut-off events. For 26049/26049 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 8221 event pairs, 60 based on Foata normal form. 1/1316 useless extension candidates. Maximal degree in co-relation 10447. Up to 845 conditions per place. [2022-11-16 11:09:18,343 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 369 selfloop transitions, 146 changer transitions 34/588 dead transitions. [2022-11-16 11:09:18,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 588 transitions, 9071 flow [2022-11-16 11:09:18,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-16 11:09:18,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-16 11:09:18,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2122 transitions. [2022-11-16 11:09:18,346 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5643617021276596 [2022-11-16 11:09:18,346 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2122 transitions. [2022-11-16 11:09:18,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2122 transitions. [2022-11-16 11:09:18,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:18,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2122 transitions. [2022-11-16 11:09:18,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 53.05) internal successors, (2122), 40 states have internal predecessors, (2122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:18,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:18,349 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:18,349 INFO L175 Difference]: Start difference. First operand has 416 places, 525 transitions, 7065 flow. Second operand 40 states and 2122 transitions. [2022-11-16 11:09:18,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 588 transitions, 9071 flow [2022-11-16 11:09:18,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 588 transitions, 8141 flow, removed 440 selfloop flow, removed 13 redundant places. [2022-11-16 11:09:18,522 INFO L231 Difference]: Finished difference. Result has 446 places, 528 transitions, 6562 flow [2022-11-16 11:09:18,522 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6139, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=6562, PETRI_PLACES=446, PETRI_TRANSITIONS=528} [2022-11-16 11:09:18,523 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 358 predicate places. [2022-11-16 11:09:18,523 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 528 transitions, 6562 flow [2022-11-16 11:09:18,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:18,523 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:18,523 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:18,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2022-11-16 11:09:18,523 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:09:18,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:18,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1849103222, now seen corresponding path program 148 times [2022-11-16 11:09:18,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:18,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415576737] [2022-11-16 11:09:18,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:18,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:18,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:19,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:19,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:19,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415576737] [2022-11-16 11:09:19,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415576737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:19,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:19,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:09:19,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980282560] [2022-11-16 11:09:19,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:19,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:09:19,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:19,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:09:19,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:09:19,071 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:09:19,071 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 528 transitions, 6562 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:19,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:19,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:09:19,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:21,078 INFO L130 PetriNetUnfolder]: 506/1429 cut-off events. [2022-11-16 11:09:21,078 INFO L131 PetriNetUnfolder]: For 30041/30041 co-relation queries the response was YES. [2022-11-16 11:09:21,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11328 conditions, 1429 events. 506/1429 cut-off events. For 30041/30041 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 9130 event pairs, 54 based on Foata normal form. 1/1427 useless extension candidates. Maximal degree in co-relation 11175. Up to 985 conditions per place. [2022-11-16 11:09:21,097 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 445 selfloop transitions, 133 changer transitions 21/638 dead transitions. [2022-11-16 11:09:21,097 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 638 transitions, 9595 flow [2022-11-16 11:09:21,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-16 11:09:21,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-16 11:09:21,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1974 transitions. [2022-11-16 11:09:21,100 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5675675675675675 [2022-11-16 11:09:21,100 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1974 transitions. [2022-11-16 11:09:21,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1974 transitions. [2022-11-16 11:09:21,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:21,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1974 transitions. [2022-11-16 11:09:21,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 53.351351351351354) internal successors, (1974), 37 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:21,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:21,104 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:21,104 INFO L175 Difference]: Start difference. First operand has 446 places, 528 transitions, 6562 flow. Second operand 37 states and 1974 transitions. [2022-11-16 11:09:21,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 638 transitions, 9595 flow [2022-11-16 11:09:21,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 638 transitions, 9245 flow, removed 76 selfloop flow, removed 35 redundant places. [2022-11-16 11:09:21,291 INFO L231 Difference]: Finished difference. Result has 457 places, 589 transitions, 7835 flow [2022-11-16 11:09:21,291 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6270, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=7835, PETRI_PLACES=457, PETRI_TRANSITIONS=589} [2022-11-16 11:09:21,292 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 369 predicate places. [2022-11-16 11:09:21,292 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 589 transitions, 7835 flow [2022-11-16 11:09:21,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:21,292 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:21,293 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:21,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2022-11-16 11:09:21,293 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:09:21,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:21,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1241357250, now seen corresponding path program 149 times [2022-11-16 11:09:21,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:21,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435626172] [2022-11-16 11:09:21,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:21,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:21,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:21,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:21,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:21,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435626172] [2022-11-16 11:09:21,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435626172] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:21,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:21,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-16 11:09:21,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136513164] [2022-11-16 11:09:21,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:21,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 11:09:21,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:21,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 11:09:21,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:09:21,730 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:09:21,731 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 589 transitions, 7835 flow. Second operand has 17 states, 17 states have (on average 51.35294117647059) internal successors, (873), 17 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:21,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:21,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:09:21,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:23,397 INFO L130 PetriNetUnfolder]: 511/1456 cut-off events. [2022-11-16 11:09:23,397 INFO L131 PetriNetUnfolder]: For 32978/32978 co-relation queries the response was YES. [2022-11-16 11:09:23,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11850 conditions, 1456 events. 511/1456 cut-off events. For 32978/32978 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 9441 event pairs, 60 based on Foata normal form. 1/1454 useless extension candidates. Maximal degree in co-relation 11687. Up to 1043 conditions per place. [2022-11-16 11:09:23,414 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 482 selfloop transitions, 92 changer transitions 29/642 dead transitions. [2022-11-16 11:09:23,414 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 642 transitions, 9872 flow [2022-11-16 11:09:23,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-16 11:09:23,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-16 11:09:23,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1514 transitions. [2022-11-16 11:09:23,416 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5752279635258358 [2022-11-16 11:09:23,416 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 1514 transitions. [2022-11-16 11:09:23,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 1514 transitions. [2022-11-16 11:09:23,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:23,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 1514 transitions. [2022-11-16 11:09:23,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 54.07142857142857) internal successors, (1514), 28 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:23,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 94.0) internal successors, (2726), 29 states have internal predecessors, (2726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:23,418 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 94.0) internal successors, (2726), 29 states have internal predecessors, (2726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:23,419 INFO L175 Difference]: Start difference. First operand has 457 places, 589 transitions, 7835 flow. Second operand 28 states and 1514 transitions. [2022-11-16 11:09:23,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 642 transitions, 9872 flow [2022-11-16 11:09:23,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 642 transitions, 9183 flow, removed 306 selfloop flow, removed 15 redundant places. [2022-11-16 11:09:23,655 INFO L231 Difference]: Finished difference. Result has 473 places, 594 transitions, 7590 flow [2022-11-16 11:09:23,655 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7206, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=7590, PETRI_PLACES=473, PETRI_TRANSITIONS=594} [2022-11-16 11:09:23,656 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 385 predicate places. [2022-11-16 11:09:23,656 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 594 transitions, 7590 flow [2022-11-16 11:09:23,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 51.35294117647059) internal successors, (873), 17 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:23,656 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:23,656 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:23,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2022-11-16 11:09:23,657 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:09:23,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:23,657 INFO L85 PathProgramCache]: Analyzing trace with hash -963427796, now seen corresponding path program 150 times [2022-11-16 11:09:23,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:23,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386603543] [2022-11-16 11:09:23,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:23,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:23,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:24,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:24,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:24,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386603543] [2022-11-16 11:09:24,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386603543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:24,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:24,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-16 11:09:24,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499681737] [2022-11-16 11:09:24,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:24,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:09:24,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:24,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:09:24,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:09:24,191 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:09:24,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 594 transitions, 7590 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:24,192 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:24,192 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:09:24,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:26,013 INFO L130 PetriNetUnfolder]: 515/1484 cut-off events. [2022-11-16 11:09:26,013 INFO L131 PetriNetUnfolder]: For 33604/33604 co-relation queries the response was YES. [2022-11-16 11:09:26,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11954 conditions, 1484 events. 515/1484 cut-off events. For 33604/33604 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 9682 event pairs, 60 based on Foata normal form. 1/1482 useless extension candidates. Maximal degree in co-relation 11784. Up to 1050 conditions per place. [2022-11-16 11:09:26,034 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 485 selfloop transitions, 103 changer transitions 29/656 dead transitions. [2022-11-16 11:09:26,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 656 transitions, 9955 flow [2022-11-16 11:09:26,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 11:09:26,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-16 11:09:26,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1717 transitions. [2022-11-16 11:09:26,037 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.570811170212766 [2022-11-16 11:09:26,037 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1717 transitions. [2022-11-16 11:09:26,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1717 transitions. [2022-11-16 11:09:26,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:26,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1717 transitions. [2022-11-16 11:09:26,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.65625) internal successors, (1717), 32 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:26,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:26,043 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:26,043 INFO L175 Difference]: Start difference. First operand has 473 places, 594 transitions, 7590 flow. Second operand 32 states and 1717 transitions. [2022-11-16 11:09:26,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 656 transitions, 9955 flow [2022-11-16 11:09:26,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 656 transitions, 9572 flow, removed 143 selfloop flow, removed 21 redundant places. [2022-11-16 11:09:26,336 INFO L231 Difference]: Finished difference. Result has 486 places, 607 transitions, 7926 flow [2022-11-16 11:09:26,336 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7355, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=7926, PETRI_PLACES=486, PETRI_TRANSITIONS=607} [2022-11-16 11:09:26,337 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 398 predicate places. [2022-11-16 11:09:26,337 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 607 transitions, 7926 flow [2022-11-16 11:09:26,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:26,337 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:26,338 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:26,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2022-11-16 11:09:26,338 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:09:26,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:26,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1575504402, now seen corresponding path program 151 times [2022-11-16 11:09:26,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:26,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943350167] [2022-11-16 11:09:26,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:26,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:26,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:26,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:26,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943350167] [2022-11-16 11:09:26,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943350167] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:26,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:26,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:09:26,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972973937] [2022-11-16 11:09:26,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:26,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:09:26,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:26,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:09:26,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:09:26,966 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:09:26,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 607 transitions, 7926 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:26,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:26,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:09:26,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:29,297 INFO L130 PetriNetUnfolder]: 550/1579 cut-off events. [2022-11-16 11:09:29,297 INFO L131 PetriNetUnfolder]: For 39355/39355 co-relation queries the response was YES. [2022-11-16 11:09:29,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12991 conditions, 1579 events. 550/1579 cut-off events. For 39355/39355 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 10501 event pairs, 48 based on Foata normal form. 1/1577 useless extension candidates. Maximal degree in co-relation 12817. Up to 871 conditions per place. [2022-11-16 11:09:29,318 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 344 selfloop transitions, 307 changer transitions 23/713 dead transitions. [2022-11-16 11:09:29,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 713 transitions, 11307 flow [2022-11-16 11:09:29,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-16 11:09:29,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-11-16 11:09:29,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 2483 transitions. [2022-11-16 11:09:29,321 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5620190131281123 [2022-11-16 11:09:29,321 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 2483 transitions. [2022-11-16 11:09:29,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 2483 transitions. [2022-11-16 11:09:29,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:29,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 2483 transitions. [2022-11-16 11:09:29,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 52.829787234042556) internal successors, (2483), 47 states have internal predecessors, (2483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:29,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 94.0) internal successors, (4512), 48 states have internal predecessors, (4512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:29,326 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 94.0) internal successors, (4512), 48 states have internal predecessors, (4512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:29,326 INFO L175 Difference]: Start difference. First operand has 486 places, 607 transitions, 7926 flow. Second operand 47 states and 2483 transitions. [2022-11-16 11:09:29,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 713 transitions, 11307 flow [2022-11-16 11:09:29,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 713 transitions, 10921 flow, removed 121 selfloop flow, removed 26 redundant places. [2022-11-16 11:09:29,632 INFO L231 Difference]: Finished difference. Result has 512 places, 661 transitions, 9695 flow [2022-11-16 11:09:29,632 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7612, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=9695, PETRI_PLACES=512, PETRI_TRANSITIONS=661} [2022-11-16 11:09:29,633 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 424 predicate places. [2022-11-16 11:09:29,633 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 661 transitions, 9695 flow [2022-11-16 11:09:29,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:29,633 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:29,633 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:29,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2022-11-16 11:09:29,633 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:09:29,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:29,634 INFO L85 PathProgramCache]: Analyzing trace with hash 324654396, now seen corresponding path program 152 times [2022-11-16 11:09:29,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:29,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118106372] [2022-11-16 11:09:29,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:29,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:29,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:30,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:30,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:30,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118106372] [2022-11-16 11:09:30,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118106372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:30,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:30,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:09:30,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833248250] [2022-11-16 11:09:30,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:30,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:09:30,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:30,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:09:30,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:09:30,089 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:09:30,089 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 661 transitions, 9695 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:30,089 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:30,089 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:09:30,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:32,179 INFO L130 PetriNetUnfolder]: 555/1593 cut-off events. [2022-11-16 11:09:32,179 INFO L131 PetriNetUnfolder]: For 44086/44086 co-relation queries the response was YES. [2022-11-16 11:09:32,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13839 conditions, 1593 events. 555/1593 cut-off events. For 44086/44086 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 10646 event pairs, 65 based on Foata normal form. 1/1591 useless extension candidates. Maximal degree in co-relation 13659. Up to 1146 conditions per place. [2022-11-16 11:09:32,205 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 543 selfloop transitions, 95 changer transitions 35/712 dead transitions. [2022-11-16 11:09:32,205 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 712 transitions, 11776 flow [2022-11-16 11:09:32,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 11:09:32,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-16 11:09:32,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1814 transitions. [2022-11-16 11:09:32,207 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.567584480600751 [2022-11-16 11:09:32,207 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1814 transitions. [2022-11-16 11:09:32,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1814 transitions. [2022-11-16 11:09:32,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:32,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1814 transitions. [2022-11-16 11:09:32,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.35294117647059) internal successors, (1814), 34 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:32,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:32,211 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:32,212 INFO L175 Difference]: Start difference. First operand has 512 places, 661 transitions, 9695 flow. Second operand 34 states and 1814 transitions. [2022-11-16 11:09:32,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 712 transitions, 11776 flow [2022-11-16 11:09:32,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 712 transitions, 11077 flow, removed 270 selfloop flow, removed 28 redundant places. [2022-11-16 11:09:32,542 INFO L231 Difference]: Finished difference. Result has 525 places, 661 transitions, 9283 flow [2022-11-16 11:09:32,542 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9008, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=661, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=9283, PETRI_PLACES=525, PETRI_TRANSITIONS=661} [2022-11-16 11:09:32,542 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 437 predicate places. [2022-11-16 11:09:32,542 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 661 transitions, 9283 flow [2022-11-16 11:09:32,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:32,543 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:32,543 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:32,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2022-11-16 11:09:32,543 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:09:32,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:32,543 INFO L85 PathProgramCache]: Analyzing trace with hash 832460752, now seen corresponding path program 153 times [2022-11-16 11:09:32,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:32,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538730459] [2022-11-16 11:09:32,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:32,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:32,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:32,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:32,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:32,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538730459] [2022-11-16 11:09:32,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538730459] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:32,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:32,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-16 11:09:32,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230792231] [2022-11-16 11:09:32,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:32,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:09:32,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:32,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:09:32,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:09:32,972 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:09:32,973 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 661 transitions, 9283 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:32,973 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:32,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:09:32,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:35,143 INFO L130 PetriNetUnfolder]: 581/1656 cut-off events. [2022-11-16 11:09:35,143 INFO L131 PetriNetUnfolder]: For 44913/44913 co-relation queries the response was YES. [2022-11-16 11:09:35,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14314 conditions, 1656 events. 581/1656 cut-off events. For 44913/44913 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 11201 event pairs, 49 based on Foata normal form. 1/1654 useless extension candidates. Maximal degree in co-relation 14124. Up to 1144 conditions per place. [2022-11-16 11:09:35,163 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 544 selfloop transitions, 145 changer transitions 32/760 dead transitions. [2022-11-16 11:09:35,163 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 760 transitions, 12455 flow [2022-11-16 11:09:35,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 11:09:35,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 11:09:35,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1872 transitions. [2022-11-16 11:09:35,165 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5689969604863222 [2022-11-16 11:09:35,165 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1872 transitions. [2022-11-16 11:09:35,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1872 transitions. [2022-11-16 11:09:35,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:35,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1872 transitions. [2022-11-16 11:09:35,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.48571428571429) internal successors, (1872), 35 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:35,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:35,168 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:35,168 INFO L175 Difference]: Start difference. First operand has 525 places, 661 transitions, 9283 flow. Second operand 35 states and 1872 transitions. [2022-11-16 11:09:35,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 760 transitions, 12455 flow [2022-11-16 11:09:35,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 760 transitions, 12096 flow, removed 51 selfloop flow, removed 34 redundant places. [2022-11-16 11:09:35,509 INFO L231 Difference]: Finished difference. Result has 533 places, 702 transitions, 10208 flow [2022-11-16 11:09:35,509 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8993, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=661, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=10208, PETRI_PLACES=533, PETRI_TRANSITIONS=702} [2022-11-16 11:09:35,509 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 445 predicate places. [2022-11-16 11:09:35,510 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 702 transitions, 10208 flow [2022-11-16 11:09:35,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:35,510 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:35,510 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:35,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2022-11-16 11:09:35,510 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:09:35,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:35,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1717560350, now seen corresponding path program 154 times [2022-11-16 11:09:35,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:35,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438448176] [2022-11-16 11:09:35,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:35,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:35,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:35,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:35,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:35,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438448176] [2022-11-16 11:09:35,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438448176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:35,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:35,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:09:35,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261049522] [2022-11-16 11:09:35,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:35,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:09:35,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:35,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:09:35,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:09:35,979 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:09:35,980 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 702 transitions, 10208 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:35,980 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:35,980 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:09:35,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:38,199 INFO L130 PetriNetUnfolder]: 580/1668 cut-off events. [2022-11-16 11:09:38,200 INFO L131 PetriNetUnfolder]: For 45915/45915 co-relation queries the response was YES. [2022-11-16 11:09:38,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14509 conditions, 1668 events. 580/1668 cut-off events. For 45915/45915 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 11355 event pairs, 61 based on Foata normal form. 1/1666 useless extension candidates. Maximal degree in co-relation 14315. Up to 1204 conditions per place. [2022-11-16 11:09:38,223 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 574 selfloop transitions, 110 changer transitions 33/756 dead transitions. [2022-11-16 11:09:38,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 561 places, 756 transitions, 12613 flow [2022-11-16 11:09:38,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-16 11:09:38,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-16 11:09:38,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1907 transitions. [2022-11-16 11:09:38,225 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5635342789598109 [2022-11-16 11:09:38,225 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1907 transitions. [2022-11-16 11:09:38,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1907 transitions. [2022-11-16 11:09:38,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:38,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1907 transitions. [2022-11-16 11:09:38,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.97222222222222) internal successors, (1907), 36 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:38,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:38,228 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:38,229 INFO L175 Difference]: Start difference. First operand has 533 places, 702 transitions, 10208 flow. Second operand 36 states and 1907 transitions. [2022-11-16 11:09:38,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 561 places, 756 transitions, 12613 flow [2022-11-16 11:09:38,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 756 transitions, 12331 flow, removed 113 selfloop flow, removed 17 redundant places. [2022-11-16 11:09:38,658 INFO L231 Difference]: Finished difference. Result has 557 places, 705 transitions, 10417 flow [2022-11-16 11:09:38,658 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9960, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=593, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=10417, PETRI_PLACES=557, PETRI_TRANSITIONS=705} [2022-11-16 11:09:38,658 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 469 predicate places. [2022-11-16 11:09:38,659 INFO L495 AbstractCegarLoop]: Abstraction has has 557 places, 705 transitions, 10417 flow [2022-11-16 11:09:38,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:38,659 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:38,659 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:38,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2022-11-16 11:09:38,659 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:09:38,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:38,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1883005044, now seen corresponding path program 155 times [2022-11-16 11:09:38,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:38,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238944242] [2022-11-16 11:09:38,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:38,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:38,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:39,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:39,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:39,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238944242] [2022-11-16 11:09:39,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238944242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:39,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:39,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:09:39,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574035933] [2022-11-16 11:09:39,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:39,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:09:39,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:39,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:09:39,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:09:39,138 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:09:39,139 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 557 places, 705 transitions, 10417 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:39,139 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:39,139 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:09:39,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:41,417 INFO L130 PetriNetUnfolder]: 581/1665 cut-off events. [2022-11-16 11:09:41,417 INFO L131 PetriNetUnfolder]: For 44635/44635 co-relation queries the response was YES. [2022-11-16 11:09:41,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14575 conditions, 1665 events. 581/1665 cut-off events. For 44635/44635 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 11322 event pairs, 57 based on Foata normal form. 1/1663 useless extension candidates. Maximal degree in co-relation 14373. Up to 1155 conditions per place. [2022-11-16 11:09:41,444 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 547 selfloop transitions, 142 changer transitions 37/765 dead transitions. [2022-11-16 11:09:41,444 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 765 transitions, 12855 flow [2022-11-16 11:09:41,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-16 11:09:41,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-16 11:09:41,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2021 transitions. [2022-11-16 11:09:41,447 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5657894736842105 [2022-11-16 11:09:41,447 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2021 transitions. [2022-11-16 11:09:41,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2021 transitions. [2022-11-16 11:09:41,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:41,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2021 transitions. [2022-11-16 11:09:41,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 53.18421052631579) internal successors, (2021), 38 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:41,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:41,451 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:41,451 INFO L175 Difference]: Start difference. First operand has 557 places, 705 transitions, 10417 flow. Second operand 38 states and 2021 transitions. [2022-11-16 11:09:41,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 583 places, 765 transitions, 12855 flow [2022-11-16 11:09:41,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 765 transitions, 12504 flow, removed 77 selfloop flow, removed 31 redundant places. [2022-11-16 11:09:41,807 INFO L231 Difference]: Finished difference. Result has 567 places, 709 transitions, 10604 flow [2022-11-16 11:09:41,808 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=10122, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=705, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=10604, PETRI_PLACES=567, PETRI_TRANSITIONS=709} [2022-11-16 11:09:41,808 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 479 predicate places. [2022-11-16 11:09:41,808 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 709 transitions, 10604 flow [2022-11-16 11:09:41,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:41,808 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:41,809 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:41,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2022-11-16 11:09:41,809 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:09:41,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:41,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1794060984, now seen corresponding path program 156 times [2022-11-16 11:09:41,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:41,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016606750] [2022-11-16 11:09:41,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:41,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:41,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:42,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:42,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:42,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016606750] [2022-11-16 11:09:42,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016606750] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:42,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:42,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:09:42,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973558289] [2022-11-16 11:09:42,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:42,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:09:42,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:42,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:09:42,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:09:42,366 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:09:42,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 709 transitions, 10604 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:42,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:42,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:09:42,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:44,757 INFO L130 PetriNetUnfolder]: 587/1695 cut-off events. [2022-11-16 11:09:44,757 INFO L131 PetriNetUnfolder]: For 45367/45367 co-relation queries the response was YES. [2022-11-16 11:09:44,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14892 conditions, 1695 events. 587/1695 cut-off events. For 45367/45367 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 11632 event pairs, 38 based on Foata normal form. 1/1693 useless extension candidates. Maximal degree in co-relation 14685. Up to 1047 conditions per place. [2022-11-16 11:09:44,783 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 469 selfloop transitions, 244 changer transitions 32/784 dead transitions. [2022-11-16 11:09:44,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 598 places, 784 transitions, 13541 flow [2022-11-16 11:09:44,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-16 11:09:44,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-11-16 11:09:44,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 2225 transitions. [2022-11-16 11:09:44,786 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5635764944275583 [2022-11-16 11:09:44,786 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 2225 transitions. [2022-11-16 11:09:44,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 2225 transitions. [2022-11-16 11:09:44,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:44,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 2225 transitions. [2022-11-16 11:09:44,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 52.976190476190474) internal successors, (2225), 42 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:44,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 94.0) internal successors, (4042), 43 states have internal predecessors, (4042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:44,791 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 94.0) internal successors, (4042), 43 states have internal predecessors, (4042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:44,791 INFO L175 Difference]: Start difference. First operand has 567 places, 709 transitions, 10604 flow. Second operand 42 states and 2225 transitions. [2022-11-16 11:09:44,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 598 places, 784 transitions, 13541 flow [2022-11-16 11:09:45,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 784 transitions, 13124 flow, removed 52 selfloop flow, removed 35 redundant places. [2022-11-16 11:09:45,169 INFO L231 Difference]: Finished difference. Result has 574 places, 729 transitions, 11368 flow [2022-11-16 11:09:45,169 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=10233, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=709, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=11368, PETRI_PLACES=574, PETRI_TRANSITIONS=729} [2022-11-16 11:09:45,169 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 486 predicate places. [2022-11-16 11:09:45,169 INFO L495 AbstractCegarLoop]: Abstraction has has 574 places, 729 transitions, 11368 flow [2022-11-16 11:09:45,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:45,170 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:45,170 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:45,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2022-11-16 11:09:45,170 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:09:45,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:45,171 INFO L85 PathProgramCache]: Analyzing trace with hash -51062402, now seen corresponding path program 157 times [2022-11-16 11:09:45,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:45,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606836518] [2022-11-16 11:09:45,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:45,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:45,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:45,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:45,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:45,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606836518] [2022-11-16 11:09:45,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606836518] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:45,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:45,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:09:45,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865036500] [2022-11-16 11:09:45,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:45,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:09:45,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:45,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:09:45,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:09:45,694 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:09:45,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 729 transitions, 11368 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:45,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:45,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:09:45,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:48,190 INFO L130 PetriNetUnfolder]: 586/1703 cut-off events. [2022-11-16 11:09:48,190 INFO L131 PetriNetUnfolder]: For 46486/46486 co-relation queries the response was YES. [2022-11-16 11:09:48,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15160 conditions, 1703 events. 586/1703 cut-off events. For 46486/46486 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 11780 event pairs, 39 based on Foata normal form. 1/1701 useless extension candidates. Maximal degree in co-relation 14955. Up to 1065 conditions per place. [2022-11-16 11:09:48,216 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 472 selfloop transitions, 236 changer transitions 37/784 dead transitions. [2022-11-16 11:09:48,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 611 places, 784 transitions, 13759 flow [2022-11-16 11:09:48,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-16 11:09:48,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-16 11:09:48,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 2374 transitions. [2022-11-16 11:09:48,218 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5612293144208038 [2022-11-16 11:09:48,218 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 2374 transitions. [2022-11-16 11:09:48,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 2374 transitions. [2022-11-16 11:09:48,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:48,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 2374 transitions. [2022-11-16 11:09:48,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 52.75555555555555) internal successors, (2374), 45 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:48,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 94.0) internal successors, (4324), 46 states have internal predecessors, (4324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:48,223 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 94.0) internal successors, (4324), 46 states have internal predecessors, (4324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:48,223 INFO L175 Difference]: Start difference. First operand has 574 places, 729 transitions, 11368 flow. Second operand 45 states and 2374 transitions. [2022-11-16 11:09:48,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 611 places, 784 transitions, 13759 flow [2022-11-16 11:09:48,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 784 transitions, 13244 flow, removed 134 selfloop flow, removed 36 redundant places. [2022-11-16 11:09:48,645 INFO L231 Difference]: Finished difference. Result has 590 places, 733 transitions, 11642 flow [2022-11-16 11:09:48,645 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=10910, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=729, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=230, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=11642, PETRI_PLACES=590, PETRI_TRANSITIONS=733} [2022-11-16 11:09:48,645 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 502 predicate places. [2022-11-16 11:09:48,646 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 733 transitions, 11642 flow [2022-11-16 11:09:48,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:48,646 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:48,646 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:48,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2022-11-16 11:09:48,647 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:09:48,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:48,647 INFO L85 PathProgramCache]: Analyzing trace with hash 48180748, now seen corresponding path program 158 times [2022-11-16 11:09:48,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:48,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182898658] [2022-11-16 11:09:48,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:48,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:48,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:49,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:49,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:49,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182898658] [2022-11-16 11:09:49,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182898658] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:49,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:49,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:09:49,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928769831] [2022-11-16 11:09:49,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:49,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:09:49,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:49,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:09:49,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:09:49,109 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:09:49,110 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 733 transitions, 11642 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:49,110 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:49,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:09:49,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:51,447 INFO L130 PetriNetUnfolder]: 591/1684 cut-off events. [2022-11-16 11:09:51,447 INFO L131 PetriNetUnfolder]: For 44808/44808 co-relation queries the response was YES. [2022-11-16 11:09:51,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15468 conditions, 1684 events. 591/1684 cut-off events. For 44808/44808 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 11576 event pairs, 58 based on Foata normal form. 1/1681 useless extension candidates. Maximal degree in co-relation 15255. Up to 1226 conditions per place. [2022-11-16 11:09:51,473 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 584 selfloop transitions, 142 changer transitions 32/797 dead transitions. [2022-11-16 11:09:51,473 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 617 places, 797 transitions, 14519 flow [2022-11-16 11:09:51,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-16 11:09:51,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-16 11:09:51,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2013 transitions. [2022-11-16 11:09:51,475 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5635498320268757 [2022-11-16 11:09:51,476 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2013 transitions. [2022-11-16 11:09:51,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2013 transitions. [2022-11-16 11:09:51,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:51,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2013 transitions. [2022-11-16 11:09:51,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.973684210526315) internal successors, (2013), 38 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:51,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:51,481 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:51,481 INFO L175 Difference]: Start difference. First operand has 590 places, 733 transitions, 11642 flow. Second operand 38 states and 2013 transitions. [2022-11-16 11:09:51,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 617 places, 797 transitions, 14519 flow [2022-11-16 11:09:51,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 574 places, 797 transitions, 13834 flow, removed 63 selfloop flow, removed 43 redundant places. [2022-11-16 11:09:51,914 INFO L231 Difference]: Finished difference. Result has 588 places, 749 transitions, 11884 flow [2022-11-16 11:09:51,915 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=11045, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=733, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=595, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=11884, PETRI_PLACES=588, PETRI_TRANSITIONS=749} [2022-11-16 11:09:51,915 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 500 predicate places. [2022-11-16 11:09:51,915 INFO L495 AbstractCegarLoop]: Abstraction has has 588 places, 749 transitions, 11884 flow [2022-11-16 11:09:51,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:51,915 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:51,915 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:51,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2022-11-16 11:09:51,916 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:09:51,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:51,916 INFO L85 PathProgramCache]: Analyzing trace with hash -47759764, now seen corresponding path program 159 times [2022-11-16 11:09:51,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:51,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987892854] [2022-11-16 11:09:51,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:51,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:51,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:52,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:52,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:52,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987892854] [2022-11-16 11:09:52,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987892854] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:52,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:52,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-16 11:09:52,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544404432] [2022-11-16 11:09:52,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:52,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:09:52,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:52,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:09:52,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:09:52,343 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:09:52,343 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 588 places, 749 transitions, 11884 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:52,343 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:52,343 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:09:52,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:54,434 INFO L130 PetriNetUnfolder]: 587/1707 cut-off events. [2022-11-16 11:09:54,434 INFO L131 PetriNetUnfolder]: For 44607/44607 co-relation queries the response was YES. [2022-11-16 11:09:54,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15317 conditions, 1707 events. 587/1707 cut-off events. For 44607/44607 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 11854 event pairs, 56 based on Foata normal form. 1/1705 useless extension candidates. Maximal degree in co-relation 15103. Up to 1268 conditions per place. [2022-11-16 11:09:54,458 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 631 selfloop transitions, 89 changer transitions 35/794 dead transitions. [2022-11-16 11:09:54,458 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 794 transitions, 14174 flow [2022-11-16 11:09:54,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 11:09:54,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 11:09:54,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1607 transitions. [2022-11-16 11:09:54,460 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5698581560283688 [2022-11-16 11:09:54,460 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1607 transitions. [2022-11-16 11:09:54,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1607 transitions. [2022-11-16 11:09:54,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:54,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1607 transitions. [2022-11-16 11:09:54,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.56666666666667) internal successors, (1607), 30 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:54,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:54,464 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:54,464 INFO L175 Difference]: Start difference. First operand has 588 places, 749 transitions, 11884 flow. Second operand 30 states and 1607 transitions. [2022-11-16 11:09:54,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 609 places, 794 transitions, 14174 flow [2022-11-16 11:09:54,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 794 transitions, 13655 flow, removed 182 selfloop flow, removed 29 redundant places. [2022-11-16 11:09:54,885 INFO L231 Difference]: Finished difference. Result has 591 places, 745 transitions, 11713 flow [2022-11-16 11:09:54,885 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=11515, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=749, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=660, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=11713, PETRI_PLACES=591, PETRI_TRANSITIONS=745} [2022-11-16 11:09:54,886 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 503 predicate places. [2022-11-16 11:09:54,886 INFO L495 AbstractCegarLoop]: Abstraction has has 591 places, 745 transitions, 11713 flow [2022-11-16 11:09:54,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:54,886 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:54,887 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:54,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2022-11-16 11:09:54,887 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:09:54,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:54,888 INFO L85 PathProgramCache]: Analyzing trace with hash -764338064, now seen corresponding path program 160 times [2022-11-16 11:09:54,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:54,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384598563] [2022-11-16 11:09:54,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:54,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:54,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:55,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:55,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:55,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384598563] [2022-11-16 11:09:55,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384598563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:55,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:55,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:09:55,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716120455] [2022-11-16 11:09:55,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:55,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:09:55,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:55,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:09:55,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:09:55,444 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:09:55,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 745 transitions, 11713 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:55,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:55,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:09:55,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:57,749 INFO L130 PetriNetUnfolder]: 605/1736 cut-off events. [2022-11-16 11:09:57,750 INFO L131 PetriNetUnfolder]: For 47801/47801 co-relation queries the response was YES. [2022-11-16 11:09:57,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15838 conditions, 1736 events. 605/1736 cut-off events. For 47801/47801 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 11996 event pairs, 41 based on Foata normal form. 1/1734 useless extension candidates. Maximal degree in co-relation 15620. Up to 1286 conditions per place. [2022-11-16 11:09:57,869 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 649 selfloop transitions, 113 changer transitions 20/821 dead transitions. [2022-11-16 11:09:57,869 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 612 places, 821 transitions, 14842 flow [2022-11-16 11:09:57,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 11:09:57,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-16 11:09:57,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1821 transitions. [2022-11-16 11:09:57,871 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5697747183979975 [2022-11-16 11:09:57,871 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1821 transitions. [2022-11-16 11:09:57,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1821 transitions. [2022-11-16 11:09:57,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:57,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1821 transitions. [2022-11-16 11:09:57,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.55882352941177) internal successors, (1821), 34 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:57,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:57,875 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:57,875 INFO L175 Difference]: Start difference. First operand has 591 places, 745 transitions, 11713 flow. Second operand 34 states and 1821 transitions. [2022-11-16 11:09:57,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 612 places, 821 transitions, 14842 flow [2022-11-16 11:09:58,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 821 transitions, 14518 flow, removed 47 selfloop flow, removed 28 redundant places. [2022-11-16 11:09:58,307 INFO L231 Difference]: Finished difference. Result has 593 places, 775 transitions, 12508 flow [2022-11-16 11:09:58,308 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=11451, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=745, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=651, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=12508, PETRI_PLACES=593, PETRI_TRANSITIONS=775} [2022-11-16 11:09:58,308 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 505 predicate places. [2022-11-16 11:09:58,308 INFO L495 AbstractCegarLoop]: Abstraction has has 593 places, 775 transitions, 12508 flow [2022-11-16 11:09:58,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:58,308 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:58,309 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:58,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2022-11-16 11:09:58,309 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:09:58,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:58,309 INFO L85 PathProgramCache]: Analyzing trace with hash -51073470, now seen corresponding path program 161 times [2022-11-16 11:09:58,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:58,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105898258] [2022-11-16 11:09:58,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:58,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:58,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:58,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:58,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:58,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105898258] [2022-11-16 11:09:58,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105898258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:58,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:58,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:09:58,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720497800] [2022-11-16 11:09:58,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:58,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:09:58,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:58,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:09:58,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:09:58,892 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:09:58,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 775 transitions, 12508 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:58,892 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:58,892 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:09:58,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:10:01,227 INFO L130 PetriNetUnfolder]: 608/1774 cut-off events. [2022-11-16 11:10:01,228 INFO L131 PetriNetUnfolder]: For 50672/50672 co-relation queries the response was YES. [2022-11-16 11:10:01,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16210 conditions, 1774 events. 608/1774 cut-off events. For 50672/50672 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 12500 event pairs, 61 based on Foata normal form. 1/1772 useless extension candidates. Maximal degree in co-relation 15996. Up to 1285 conditions per place. [2022-11-16 11:10:01,253 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 616 selfloop transitions, 126 changer transitions 35/816 dead transitions. [2022-11-16 11:10:01,254 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 816 transitions, 14686 flow [2022-11-16 11:10:01,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 11:10:01,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 11:10:01,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1859 transitions. [2022-11-16 11:10:01,256 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5650455927051672 [2022-11-16 11:10:01,256 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1859 transitions. [2022-11-16 11:10:01,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1859 transitions. [2022-11-16 11:10:01,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:01,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1859 transitions. [2022-11-16 11:10:01,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.114285714285714) internal successors, (1859), 35 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:01,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:01,260 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:01,260 INFO L175 Difference]: Start difference. First operand has 593 places, 775 transitions, 12508 flow. Second operand 35 states and 1859 transitions. [2022-11-16 11:10:01,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 621 places, 816 transitions, 14686 flow [2022-11-16 11:10:01,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 816 transitions, 14114 flow, removed 247 selfloop flow, removed 14 redundant places. [2022-11-16 11:10:01,848 INFO L231 Difference]: Finished difference. Result has 617 places, 767 transitions, 12193 flow [2022-11-16 11:10:01,848 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=11940, PETRI_DIFFERENCE_MINUEND_PLACES=573, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=775, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=649, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=12193, PETRI_PLACES=617, PETRI_TRANSITIONS=767} [2022-11-16 11:10:01,849 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 529 predicate places. [2022-11-16 11:10:01,849 INFO L495 AbstractCegarLoop]: Abstraction has has 617 places, 767 transitions, 12193 flow [2022-11-16 11:10:01,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:01,849 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:10:01,849 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:01,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2022-11-16 11:10:01,850 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:10:01,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:01,850 INFO L85 PathProgramCache]: Analyzing trace with hash 2043720326, now seen corresponding path program 162 times [2022-11-16 11:10:01,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:01,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173096281] [2022-11-16 11:10:01,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:01,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:01,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:02,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:02,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:02,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173096281] [2022-11-16 11:10:02,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173096281] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:02,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:02,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:10:02,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528256652] [2022-11-16 11:10:02,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:02,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:10:02,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:02,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:10:02,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:10:02,436 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:10:02,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 617 places, 767 transitions, 12193 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:02,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:10:02,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:10:02,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:10:04,809 INFO L130 PetriNetUnfolder]: 600/1760 cut-off events. [2022-11-16 11:10:04,809 INFO L131 PetriNetUnfolder]: For 49803/49803 co-relation queries the response was YES. [2022-11-16 11:10:04,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15971 conditions, 1760 events. 600/1760 cut-off events. For 49803/49803 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 12319 event pairs, 66 based on Foata normal form. 1/1758 useless extension candidates. Maximal degree in co-relation 15748. Up to 1304 conditions per place. [2022-11-16 11:10:04,843 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 653 selfloop transitions, 100 changer transitions 22/814 dead transitions. [2022-11-16 11:10:04,843 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 632 places, 814 transitions, 14396 flow [2022-11-16 11:10:04,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-16 11:10:04,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-16 11:10:04,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1555 transitions. [2022-11-16 11:10:04,845 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5704328686720469 [2022-11-16 11:10:04,845 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1555 transitions. [2022-11-16 11:10:04,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1555 transitions. [2022-11-16 11:10:04,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:04,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1555 transitions. [2022-11-16 11:10:04,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 53.62068965517241) internal successors, (1555), 29 states have internal predecessors, (1555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:04,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:04,850 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:04,850 INFO L175 Difference]: Start difference. First operand has 617 places, 767 transitions, 12193 flow. Second operand 29 states and 1555 transitions. [2022-11-16 11:10:04,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 632 places, 814 transitions, 14396 flow [2022-11-16 11:10:05,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 814 transitions, 14038 flow, removed 21 selfloop flow, removed 36 redundant places. [2022-11-16 11:10:05,437 INFO L231 Difference]: Finished difference. Result has 606 places, 773 transitions, 12226 flow [2022-11-16 11:10:05,438 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=11855, PETRI_DIFFERENCE_MINUEND_PLACES=568, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=767, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=670, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=12226, PETRI_PLACES=606, PETRI_TRANSITIONS=773} [2022-11-16 11:10:05,438 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 518 predicate places. [2022-11-16 11:10:05,438 INFO L495 AbstractCegarLoop]: Abstraction has has 606 places, 773 transitions, 12226 flow [2022-11-16 11:10:05,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:05,438 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:10:05,439 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:05,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2022-11-16 11:10:05,439 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:10:05,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:05,439 INFO L85 PathProgramCache]: Analyzing trace with hash -664749954, now seen corresponding path program 163 times [2022-11-16 11:10:05,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:05,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547939881] [2022-11-16 11:10:05,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:05,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:05,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:05,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:05,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:05,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547939881] [2022-11-16 11:10:05,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547939881] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:05,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:05,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:10:05,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991075429] [2022-11-16 11:10:05,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:05,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:10:05,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:05,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:10:05,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:10:05,994 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:10:05,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 606 places, 773 transitions, 12226 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:05,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:10:05,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:10:05,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:10:08,753 INFO L130 PetriNetUnfolder]: 667/1950 cut-off events. [2022-11-16 11:10:08,753 INFO L131 PetriNetUnfolder]: For 60022/60022 co-relation queries the response was YES. [2022-11-16 11:10:08,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17895 conditions, 1950 events. 667/1950 cut-off events. For 60022/60022 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 14149 event pairs, 51 based on Foata normal form. 1/1948 useless extension candidates. Maximal degree in co-relation 17673. Up to 1325 conditions per place. [2022-11-16 11:10:08,786 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 638 selfloop transitions, 211 changer transitions 21/909 dead transitions. [2022-11-16 11:10:08,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 638 places, 909 transitions, 16598 flow [2022-11-16 11:10:08,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-16 11:10:08,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-16 11:10:08,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2130 transitions. [2022-11-16 11:10:08,789 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5664893617021277 [2022-11-16 11:10:08,790 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2130 transitions. [2022-11-16 11:10:08,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2130 transitions. [2022-11-16 11:10:08,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:08,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2130 transitions. [2022-11-16 11:10:08,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 53.25) internal successors, (2130), 40 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:08,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:08,794 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:08,794 INFO L175 Difference]: Start difference. First operand has 606 places, 773 transitions, 12226 flow. Second operand 40 states and 2130 transitions. [2022-11-16 11:10:08,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 638 places, 909 transitions, 16598 flow [2022-11-16 11:10:09,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 617 places, 909 transitions, 16309 flow, removed 83 selfloop flow, removed 21 redundant places. [2022-11-16 11:10:09,410 INFO L231 Difference]: Finished difference. Result has 633 places, 857 transitions, 14412 flow [2022-11-16 11:10:09,411 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=11993, PETRI_DIFFERENCE_MINUEND_PLACES=578, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=773, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=593, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=14412, PETRI_PLACES=633, PETRI_TRANSITIONS=857} [2022-11-16 11:10:09,411 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 545 predicate places. [2022-11-16 11:10:09,411 INFO L495 AbstractCegarLoop]: Abstraction has has 633 places, 857 transitions, 14412 flow [2022-11-16 11:10:09,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:09,412 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:10:09,412 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:09,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2022-11-16 11:10:09,412 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:10:09,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:09,412 INFO L85 PathProgramCache]: Analyzing trace with hash 706741162, now seen corresponding path program 164 times [2022-11-16 11:10:09,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:09,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458937343] [2022-11-16 11:10:09,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:09,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:09,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:09,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:09,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:09,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458937343] [2022-11-16 11:10:09,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458937343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:09,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:09,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:10:09,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062135383] [2022-11-16 11:10:09,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:09,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:10:09,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:09,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:10:09,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:10:09,929 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:10:09,929 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 633 places, 857 transitions, 14412 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:09,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:10:09,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:10:09,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:10:12,840 INFO L130 PetriNetUnfolder]: 670/1974 cut-off events. [2022-11-16 11:10:12,840 INFO L131 PetriNetUnfolder]: For 67339/67339 co-relation queries the response was YES. [2022-11-16 11:10:12,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18790 conditions, 1974 events. 670/1974 cut-off events. For 67339/67339 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 14466 event pairs, 51 based on Foata normal form. 1/1972 useless extension candidates. Maximal degree in co-relation 18558. Up to 1438 conditions per place. [2022-11-16 11:10:12,877 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 720 selfloop transitions, 122 changer transitions 26/907 dead transitions. [2022-11-16 11:10:12,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 659 places, 907 transitions, 17132 flow [2022-11-16 11:10:12,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 11:10:12,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-16 11:10:12,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1761 transitions. [2022-11-16 11:10:12,880 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5676982591876208 [2022-11-16 11:10:12,880 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1761 transitions. [2022-11-16 11:10:12,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1761 transitions. [2022-11-16 11:10:12,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:12,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1761 transitions. [2022-11-16 11:10:12,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.36363636363637) internal successors, (1761), 33 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:12,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:12,883 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:12,884 INFO L175 Difference]: Start difference. First operand has 633 places, 857 transitions, 14412 flow. Second operand 33 states and 1761 transitions. [2022-11-16 11:10:12,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 659 places, 907 transitions, 17132 flow [2022-11-16 11:10:13,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 641 places, 907 transitions, 16238 flow, removed 399 selfloop flow, removed 18 redundant places. [2022-11-16 11:10:13,642 INFO L231 Difference]: Finished difference. Result has 651 places, 860 transitions, 14004 flow [2022-11-16 11:10:13,642 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=13556, PETRI_DIFFERENCE_MINUEND_PLACES=609, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=857, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=737, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=14004, PETRI_PLACES=651, PETRI_TRANSITIONS=860} [2022-11-16 11:10:13,643 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 563 predicate places. [2022-11-16 11:10:13,643 INFO L495 AbstractCegarLoop]: Abstraction has has 651 places, 860 transitions, 14004 flow [2022-11-16 11:10:13,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:13,643 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:10:13,643 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:13,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2022-11-16 11:10:13,643 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:10:13,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:13,644 INFO L85 PathProgramCache]: Analyzing trace with hash -50515862, now seen corresponding path program 165 times [2022-11-16 11:10:13,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:13,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348798878] [2022-11-16 11:10:13,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:13,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:14,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:14,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:14,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348798878] [2022-11-16 11:10:14,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348798878] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:14,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:14,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:10:14,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633081196] [2022-11-16 11:10:14,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:14,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:10:14,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:14,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:10:14,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:10:14,141 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:10:14,142 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 651 places, 860 transitions, 14004 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:14,142 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:10:14,142 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:10:14,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:10:17,207 INFO L130 PetriNetUnfolder]: 731/2125 cut-off events. [2022-11-16 11:10:17,207 INFO L131 PetriNetUnfolder]: For 76827/76827 co-relation queries the response was YES. [2022-11-16 11:10:17,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20369 conditions, 2125 events. 731/2125 cut-off events. For 76827/76827 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 15904 event pairs, 55 based on Foata normal form. 1/2123 useless extension candidates. Maximal degree in co-relation 20128. Up to 1419 conditions per place. [2022-11-16 11:10:17,243 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 720 selfloop transitions, 204 changer transitions 47/1010 dead transitions. [2022-11-16 11:10:17,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 677 places, 1010 transitions, 18991 flow [2022-11-16 11:10:17,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 11:10:17,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-16 11:10:17,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1813 transitions. [2022-11-16 11:10:17,246 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5672715894868585 [2022-11-16 11:10:17,246 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1813 transitions. [2022-11-16 11:10:17,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1813 transitions. [2022-11-16 11:10:17,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:17,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1813 transitions. [2022-11-16 11:10:17,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.3235294117647) internal successors, (1813), 34 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:17,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:17,250 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:17,250 INFO L175 Difference]: Start difference. First operand has 651 places, 860 transitions, 14004 flow. Second operand 34 states and 1813 transitions. [2022-11-16 11:10:17,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 677 places, 1010 transitions, 18991 flow [2022-11-16 11:10:18,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 648 places, 1010 transitions, 18666 flow, removed 69 selfloop flow, removed 29 redundant places. [2022-11-16 11:10:18,064 INFO L231 Difference]: Finished difference. Result has 660 places, 927 transitions, 15865 flow [2022-11-16 11:10:18,065 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=13715, PETRI_DIFFERENCE_MINUEND_PLACES=615, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=860, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=670, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=15865, PETRI_PLACES=660, PETRI_TRANSITIONS=927} [2022-11-16 11:10:18,065 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 572 predicate places. [2022-11-16 11:10:18,065 INFO L495 AbstractCegarLoop]: Abstraction has has 660 places, 927 transitions, 15865 flow [2022-11-16 11:10:18,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:18,066 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:10:18,066 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:18,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2022-11-16 11:10:18,066 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:10:18,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:18,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1227091020, now seen corresponding path program 166 times [2022-11-16 11:10:18,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:18,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194776449] [2022-11-16 11:10:18,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:18,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:18,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:18,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:18,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:18,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194776449] [2022-11-16 11:10:18,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194776449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:18,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:18,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-16 11:10:18,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769385527] [2022-11-16 11:10:18,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:18,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:10:18,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:18,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:10:18,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:10:18,508 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:10:18,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 660 places, 927 transitions, 15865 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:18,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:10:18,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:10:18,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:10:21,552 INFO L130 PetriNetUnfolder]: 719/2092 cut-off events. [2022-11-16 11:10:21,552 INFO L131 PetriNetUnfolder]: For 81339/81339 co-relation queries the response was YES. [2022-11-16 11:10:21,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20751 conditions, 2092 events. 719/2092 cut-off events. For 81339/81339 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 15532 event pairs, 45 based on Foata normal form. 1/2090 useless extension candidates. Maximal degree in co-relation 20506. Up to 1535 conditions per place. [2022-11-16 11:10:21,585 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 776 selfloop transitions, 145 changer transitions 25/985 dead transitions. [2022-11-16 11:10:21,585 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 684 places, 985 transitions, 19000 flow [2022-11-16 11:10:21,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 11:10:21,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-16 11:10:21,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1769 transitions. [2022-11-16 11:10:21,588 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5702772404900065 [2022-11-16 11:10:21,588 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1769 transitions. [2022-11-16 11:10:21,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1769 transitions. [2022-11-16 11:10:21,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:21,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1769 transitions. [2022-11-16 11:10:21,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.60606060606061) internal successors, (1769), 33 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:21,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:21,592 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:21,592 INFO L175 Difference]: Start difference. First operand has 660 places, 927 transitions, 15865 flow. Second operand 33 states and 1769 transitions. [2022-11-16 11:10:21,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 684 places, 985 transitions, 19000 flow [2022-11-16 11:10:22,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 657 places, 985 transitions, 18312 flow, removed 217 selfloop flow, removed 27 redundant places. [2022-11-16 11:10:22,480 INFO L231 Difference]: Finished difference. Result has 667 places, 938 transitions, 15945 flow [2022-11-16 11:10:22,480 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=15221, PETRI_DIFFERENCE_MINUEND_PLACES=625, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=927, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=785, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=15945, PETRI_PLACES=667, PETRI_TRANSITIONS=938} [2022-11-16 11:10:22,481 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 579 predicate places. [2022-11-16 11:10:22,481 INFO L495 AbstractCegarLoop]: Abstraction has has 667 places, 938 transitions, 15945 flow [2022-11-16 11:10:22,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:22,481 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:10:22,481 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:22,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2022-11-16 11:10:22,481 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:10:22,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:22,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1866040382, now seen corresponding path program 167 times [2022-11-16 11:10:22,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:22,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982148884] [2022-11-16 11:10:22,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:22,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:22,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:23,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:23,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:23,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982148884] [2022-11-16 11:10:23,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982148884] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:23,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:23,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:10:23,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226032932] [2022-11-16 11:10:23,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:23,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:10:23,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:23,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:10:23,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:10:23,079 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:10:23,079 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 667 places, 938 transitions, 15945 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:23,079 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:10:23,079 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:10:23,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:10:26,196 INFO L130 PetriNetUnfolder]: 720/2104 cut-off events. [2022-11-16 11:10:26,197 INFO L131 PetriNetUnfolder]: For 79788/79788 co-relation queries the response was YES. [2022-11-16 11:10:26,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20819 conditions, 2104 events. 720/2104 cut-off events. For 79788/79788 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 15748 event pairs, 52 based on Foata normal form. 1/2102 useless extension candidates. Maximal degree in co-relation 20571. Up to 1566 conditions per place. [2022-11-16 11:10:26,241 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 800 selfloop transitions, 115 changer transitions 30/984 dead transitions. [2022-11-16 11:10:26,241 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 694 places, 984 transitions, 18884 flow [2022-11-16 11:10:26,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 11:10:26,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 11:10:26,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1853 transitions. [2022-11-16 11:10:26,243 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5632218844984802 [2022-11-16 11:10:26,244 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1853 transitions. [2022-11-16 11:10:26,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1853 transitions. [2022-11-16 11:10:26,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:26,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1853 transitions. [2022-11-16 11:10:26,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.94285714285714) internal successors, (1853), 35 states have internal predecessors, (1853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:26,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:26,389 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:26,389 INFO L175 Difference]: Start difference. First operand has 667 places, 938 transitions, 15945 flow. Second operand 35 states and 1853 transitions. [2022-11-16 11:10:26,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 694 places, 984 transitions, 18884 flow [2022-11-16 11:10:27,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 667 places, 984 transitions, 18502 flow, removed 121 selfloop flow, removed 27 redundant places. [2022-11-16 11:10:27,351 INFO L231 Difference]: Finished difference. Result has 677 places, 936 transitions, 16002 flow [2022-11-16 11:10:27,351 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=15613, PETRI_DIFFERENCE_MINUEND_PLACES=633, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=938, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=824, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=16002, PETRI_PLACES=677, PETRI_TRANSITIONS=936} [2022-11-16 11:10:27,352 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 589 predicate places. [2022-11-16 11:10:27,352 INFO L495 AbstractCegarLoop]: Abstraction has has 677 places, 936 transitions, 16002 flow [2022-11-16 11:10:27,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:27,352 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:10:27,353 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:27,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2022-11-16 11:10:27,353 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:10:27,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:27,354 INFO L85 PathProgramCache]: Analyzing trace with hash -820000484, now seen corresponding path program 168 times [2022-11-16 11:10:27,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:27,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468289949] [2022-11-16 11:10:27,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:27,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:27,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:27,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:27,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:27,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468289949] [2022-11-16 11:10:27,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468289949] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:27,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:27,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-16 11:10:27,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34169231] [2022-11-16 11:10:27,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:27,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:10:27,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:27,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:10:27,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:10:27,974 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:10:27,975 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 677 places, 936 transitions, 16002 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:27,975 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:10:27,975 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:10:27,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:10:30,888 INFO L130 PetriNetUnfolder]: 728/2143 cut-off events. [2022-11-16 11:10:30,889 INFO L131 PetriNetUnfolder]: For 82017/82017 co-relation queries the response was YES. [2022-11-16 11:10:30,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21141 conditions, 2143 events. 728/2143 cut-off events. For 82017/82017 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 16200 event pairs, 52 based on Foata normal form. 1/2141 useless extension candidates. Maximal degree in co-relation 20891. Up to 1525 conditions per place. [2022-11-16 11:10:30,932 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 771 selfloop transitions, 173 changer transitions 26/1009 dead transitions. [2022-11-16 11:10:30,932 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 698 places, 1009 transitions, 19500 flow [2022-11-16 11:10:30,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 11:10:30,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-16 11:10:30,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1707 transitions. [2022-11-16 11:10:30,934 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5674867021276596 [2022-11-16 11:10:30,934 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1707 transitions. [2022-11-16 11:10:30,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1707 transitions. [2022-11-16 11:10:30,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:30,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1707 transitions. [2022-11-16 11:10:30,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.34375) internal successors, (1707), 32 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:30,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:30,938 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:30,938 INFO L175 Difference]: Start difference. First operand has 677 places, 936 transitions, 16002 flow. Second operand 32 states and 1707 transitions. [2022-11-16 11:10:30,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 698 places, 1009 transitions, 19500 flow [2022-11-16 11:10:31,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 664 places, 1009 transitions, 19087 flow, removed 78 selfloop flow, removed 34 redundant places. [2022-11-16 11:10:31,861 INFO L231 Difference]: Finished difference. Result has 674 places, 959 transitions, 16671 flow [2022-11-16 11:10:31,862 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=15633, PETRI_DIFFERENCE_MINUEND_PLACES=633, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=936, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=767, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=16671, PETRI_PLACES=674, PETRI_TRANSITIONS=959} [2022-11-16 11:10:31,862 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 586 predicate places. [2022-11-16 11:10:31,862 INFO L495 AbstractCegarLoop]: Abstraction has has 674 places, 959 transitions, 16671 flow [2022-11-16 11:10:31,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:31,863 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:10:31,863 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:31,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2022-11-16 11:10:31,863 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:10:31,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:31,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1117866652, now seen corresponding path program 169 times [2022-11-16 11:10:31,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:31,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868517888] [2022-11-16 11:10:31,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:31,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:31,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:32,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:32,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:32,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868517888] [2022-11-16 11:10:32,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868517888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:32,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:32,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:10:32,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973228235] [2022-11-16 11:10:32,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:32,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:10:32,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:32,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:10:32,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:10:32,384 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:10:32,384 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 674 places, 959 transitions, 16671 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:32,384 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:10:32,384 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:10:32,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:10:35,223 INFO L130 PetriNetUnfolder]: 729/2161 cut-off events. [2022-11-16 11:10:35,223 INFO L131 PetriNetUnfolder]: For 84406/84406 co-relation queries the response was YES. [2022-11-16 11:10:35,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21381 conditions, 2161 events. 729/2161 cut-off events. For 84406/84406 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 16413 event pairs, 50 based on Foata normal form. 1/2159 useless extension candidates. Maximal degree in co-relation 21131. Up to 1522 conditions per place. [2022-11-16 11:10:35,270 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 768 selfloop transitions, 179 changer transitions 28/1014 dead transitions. [2022-11-16 11:10:35,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 699 places, 1014 transitions, 19859 flow [2022-11-16 11:10:35,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 11:10:35,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-16 11:10:35,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1757 transitions. [2022-11-16 11:10:35,273 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5664087685364281 [2022-11-16 11:10:35,273 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1757 transitions. [2022-11-16 11:10:35,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1757 transitions. [2022-11-16 11:10:35,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:35,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1757 transitions. [2022-11-16 11:10:35,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.24242424242424) internal successors, (1757), 33 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:35,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:35,279 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:35,279 INFO L175 Difference]: Start difference. First operand has 674 places, 959 transitions, 16671 flow. Second operand 33 states and 1757 transitions. [2022-11-16 11:10:35,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 699 places, 1014 transitions, 19859 flow [2022-11-16 11:10:36,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 675 places, 1014 transitions, 19570 flow, removed 94 selfloop flow, removed 24 redundant places. [2022-11-16 11:10:36,322 INFO L231 Difference]: Finished difference. Result has 685 places, 962 transitions, 17013 flow [2022-11-16 11:10:36,323 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=16410, PETRI_DIFFERENCE_MINUEND_PLACES=643, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=959, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=784, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=17013, PETRI_PLACES=685, PETRI_TRANSITIONS=962} [2022-11-16 11:10:36,323 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 597 predicate places. [2022-11-16 11:10:36,324 INFO L495 AbstractCegarLoop]: Abstraction has has 685 places, 962 transitions, 17013 flow [2022-11-16 11:10:36,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:36,324 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:10:36,324 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:36,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2022-11-16 11:10:36,324 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:10:36,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:36,325 INFO L85 PathProgramCache]: Analyzing trace with hash 172734910, now seen corresponding path program 170 times [2022-11-16 11:10:36,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:36,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313520678] [2022-11-16 11:10:36,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:36,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:36,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:36,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:36,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:36,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313520678] [2022-11-16 11:10:36,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313520678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:36,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:36,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:10:36,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953332343] [2022-11-16 11:10:36,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:36,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:10:36,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:36,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:10:36,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:10:36,853 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:10:36,853 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 685 places, 962 transitions, 17013 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:36,853 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:10:36,854 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:10:36,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:10:40,093 INFO L130 PetriNetUnfolder]: 733/2160 cut-off events. [2022-11-16 11:10:40,093 INFO L131 PetriNetUnfolder]: For 87484/87484 co-relation queries the response was YES. [2022-11-16 11:10:40,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21770 conditions, 2160 events. 733/2160 cut-off events. For 87484/87484 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 16373 event pairs, 61 based on Foata normal form. 1/2158 useless extension candidates. Maximal degree in co-relation 21516. Up to 1606 conditions per place. [2022-11-16 11:10:40,135 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 832 selfloop transitions, 116 changer transitions 30/1017 dead transitions. [2022-11-16 11:10:40,135 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 714 places, 1017 transitions, 20152 flow [2022-11-16 11:10:40,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-16 11:10:40,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-16 11:10:40,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1950 transitions. [2022-11-16 11:10:40,138 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5606670500287522 [2022-11-16 11:10:40,138 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1950 transitions. [2022-11-16 11:10:40,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1950 transitions. [2022-11-16 11:10:40,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:40,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1950 transitions. [2022-11-16 11:10:40,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.7027027027027) internal successors, (1950), 37 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:40,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:40,143 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:40,143 INFO L175 Difference]: Start difference. First operand has 685 places, 962 transitions, 17013 flow. Second operand 37 states and 1950 transitions. [2022-11-16 11:10:40,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 714 places, 1017 transitions, 20152 flow [2022-11-16 11:10:41,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 687 places, 1017 transitions, 19783 flow, removed 81 selfloop flow, removed 27 redundant places. [2022-11-16 11:10:41,194 INFO L231 Difference]: Finished difference. Result has 697 places, 971 transitions, 17308 flow [2022-11-16 11:10:41,194 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=16676, PETRI_DIFFERENCE_MINUEND_PLACES=651, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=962, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=847, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=17308, PETRI_PLACES=697, PETRI_TRANSITIONS=971} [2022-11-16 11:10:41,195 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 609 predicate places. [2022-11-16 11:10:41,195 INFO L495 AbstractCegarLoop]: Abstraction has has 697 places, 971 transitions, 17308 flow [2022-11-16 11:10:41,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:41,195 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:10:41,195 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:41,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2022-11-16 11:10:41,195 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:10:41,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:41,196 INFO L85 PathProgramCache]: Analyzing trace with hash 432502776, now seen corresponding path program 171 times [2022-11-16 11:10:41,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:41,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598022048] [2022-11-16 11:10:41,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:41,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:41,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:41,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:41,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:41,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598022048] [2022-11-16 11:10:41,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598022048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:41,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:41,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:10:41,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935260429] [2022-11-16 11:10:41,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:41,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:10:41,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:41,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:10:41,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:10:41,743 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:10:41,743 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 697 places, 971 transitions, 17308 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:41,743 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:10:41,743 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:10:41,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:10:45,022 INFO L130 PetriNetUnfolder]: 747/2197 cut-off events. [2022-11-16 11:10:45,022 INFO L131 PetriNetUnfolder]: For 92742/92742 co-relation queries the response was YES. [2022-11-16 11:10:45,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22474 conditions, 2197 events. 747/2197 cut-off events. For 92742/92742 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 16751 event pairs, 48 based on Foata normal form. 1/2195 useless extension candidates. Maximal degree in co-relation 22218. Up to 1653 conditions per place. [2022-11-16 11:10:45,057 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 860 selfloop transitions, 127 changer transitions 21/1047 dead transitions. [2022-11-16 11:10:45,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 726 places, 1047 transitions, 21241 flow [2022-11-16 11:10:45,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-16 11:10:45,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-16 11:10:45,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2075 transitions. [2022-11-16 11:10:45,061 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5660120021822149 [2022-11-16 11:10:45,061 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2075 transitions. [2022-11-16 11:10:45,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2075 transitions. [2022-11-16 11:10:45,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:45,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2075 transitions. [2022-11-16 11:10:45,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 53.205128205128204) internal successors, (2075), 39 states have internal predecessors, (2075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:45,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:45,068 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:45,069 INFO L175 Difference]: Start difference. First operand has 697 places, 971 transitions, 17308 flow. Second operand 39 states and 2075 transitions. [2022-11-16 11:10:45,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 726 places, 1047 transitions, 21241 flow [2022-11-16 11:10:46,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 696 places, 1047 transitions, 20774 flow, removed 117 selfloop flow, removed 30 redundant places. [2022-11-16 11:10:46,288 INFO L231 Difference]: Finished difference. Result has 708 places, 1002 transitions, 18197 flow [2022-11-16 11:10:46,288 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=16895, PETRI_DIFFERENCE_MINUEND_PLACES=658, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=971, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=861, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=18197, PETRI_PLACES=708, PETRI_TRANSITIONS=1002} [2022-11-16 11:10:46,288 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 620 predicate places. [2022-11-16 11:10:46,289 INFO L495 AbstractCegarLoop]: Abstraction has has 708 places, 1002 transitions, 18197 flow [2022-11-16 11:10:46,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:46,289 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:10:46,289 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:46,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2022-11-16 11:10:46,289 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:10:46,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:46,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1115000266, now seen corresponding path program 172 times [2022-11-16 11:10:46,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:46,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746348615] [2022-11-16 11:10:46,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:46,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:46,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:46,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:46,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:46,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746348615] [2022-11-16 11:10:46,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746348615] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:46,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:46,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-16 11:10:46,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736491681] [2022-11-16 11:10:46,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:46,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:10:46,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:46,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:10:46,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:10:46,824 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:10:46,824 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 708 places, 1002 transitions, 18197 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:46,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:10:46,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:10:46,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:10:49,896 INFO L130 PetriNetUnfolder]: 748/2210 cut-off events. [2022-11-16 11:10:49,896 INFO L131 PetriNetUnfolder]: For 98163/98163 co-relation queries the response was YES. [2022-11-16 11:10:49,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22859 conditions, 2210 events. 748/2210 cut-off events. For 98163/98163 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 16838 event pairs, 47 based on Foata normal form. 1/2208 useless extension candidates. Maximal degree in co-relation 22598. Up to 1660 conditions per place. [2022-11-16 11:10:49,945 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 867 selfloop transitions, 123 changer transitions 18/1047 dead transitions. [2022-11-16 11:10:49,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 731 places, 1047 transitions, 21211 flow [2022-11-16 11:10:49,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 11:10:49,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 11:10:49,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1614 transitions. [2022-11-16 11:10:49,948 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5723404255319149 [2022-11-16 11:10:49,948 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1614 transitions. [2022-11-16 11:10:49,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1614 transitions. [2022-11-16 11:10:49,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:49,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1614 transitions. [2022-11-16 11:10:49,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.8) internal successors, (1614), 30 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:49,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:49,954 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:49,955 INFO L175 Difference]: Start difference. First operand has 708 places, 1002 transitions, 18197 flow. Second operand 30 states and 1614 transitions. [2022-11-16 11:10:49,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 731 places, 1047 transitions, 21211 flow [2022-11-16 11:10:51,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 714 places, 1047 transitions, 20449 flow, removed 326 selfloop flow, removed 17 redundant places. [2022-11-16 11:10:51,380 INFO L231 Difference]: Finished difference. Result has 721 places, 1010 transitions, 18075 flow [2022-11-16 11:10:51,380 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=17439, PETRI_DIFFERENCE_MINUEND_PLACES=685, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1002, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=884, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=18075, PETRI_PLACES=721, PETRI_TRANSITIONS=1010} [2022-11-16 11:10:51,381 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 633 predicate places. [2022-11-16 11:10:51,381 INFO L495 AbstractCegarLoop]: Abstraction has has 721 places, 1010 transitions, 18075 flow [2022-11-16 11:10:51,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:51,381 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:10:51,382 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:51,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2022-11-16 11:10:51,382 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:10:51,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:51,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1507605220, now seen corresponding path program 173 times [2022-11-16 11:10:51,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:51,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58556934] [2022-11-16 11:10:51,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:51,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:51,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:51,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:51,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:51,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58556934] [2022-11-16 11:10:51,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58556934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:51,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:51,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:10:51,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155908831] [2022-11-16 11:10:51,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:51,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:10:51,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:51,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:10:51,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:10:51,911 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:10:51,911 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 721 places, 1010 transitions, 18075 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:51,911 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:10:51,911 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:10:51,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:10:55,450 INFO L130 PetriNetUnfolder]: 757/2245 cut-off events. [2022-11-16 11:10:55,450 INFO L131 PetriNetUnfolder]: For 103391/103391 co-relation queries the response was YES. [2022-11-16 11:10:55,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23191 conditions, 2245 events. 757/2245 cut-off events. For 103391/103391 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 17297 event pairs, 47 based on Foata normal form. 1/2243 useless extension candidates. Maximal degree in co-relation 22924. Up to 1473 conditions per place. [2022-11-16 11:10:55,491 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 718 selfloop transitions, 284 changer transitions 29/1070 dead transitions. [2022-11-16 11:10:55,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 759 places, 1070 transitions, 21546 flow [2022-11-16 11:10:55,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-16 11:10:55,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-16 11:10:55,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 2320 transitions. [2022-11-16 11:10:55,493 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5609284332688588 [2022-11-16 11:10:55,493 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 2320 transitions. [2022-11-16 11:10:55,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 2320 transitions. [2022-11-16 11:10:55,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:55,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 2320 transitions. [2022-11-16 11:10:55,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 52.72727272727273) internal successors, (2320), 44 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:55,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 94.0) internal successors, (4230), 45 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:55,497 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 94.0) internal successors, (4230), 45 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:55,498 INFO L175 Difference]: Start difference. First operand has 721 places, 1010 transitions, 18075 flow. Second operand 44 states and 2320 transitions. [2022-11-16 11:10:55,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 759 places, 1070 transitions, 21546 flow [2022-11-16 11:10:56,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 734 places, 1070 transitions, 21023 flow, removed 175 selfloop flow, removed 25 redundant places. [2022-11-16 11:10:56,818 INFO L231 Difference]: Finished difference. Result has 744 places, 1016 transitions, 18494 flow [2022-11-16 11:10:56,819 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=17576, PETRI_DIFFERENCE_MINUEND_PLACES=691, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1010, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=275, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=731, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=18494, PETRI_PLACES=744, PETRI_TRANSITIONS=1016} [2022-11-16 11:10:56,819 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 656 predicate places. [2022-11-16 11:10:56,819 INFO L495 AbstractCegarLoop]: Abstraction has has 744 places, 1016 transitions, 18494 flow [2022-11-16 11:10:56,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:56,819 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:10:56,819 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:56,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2022-11-16 11:10:56,820 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:10:56,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:56,820 INFO L85 PathProgramCache]: Analyzing trace with hash -682117680, now seen corresponding path program 174 times [2022-11-16 11:10:56,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:56,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531860687] [2022-11-16 11:10:56,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:56,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:56,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:57,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:57,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:57,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531860687] [2022-11-16 11:10:57,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531860687] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:57,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:57,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:10:57,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593343294] [2022-11-16 11:10:57,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:57,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:10:57,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:57,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:10:57,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:10:57,373 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:10:57,374 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 744 places, 1016 transitions, 18494 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:57,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:10:57,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:10:57,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:11:00,549 INFO L130 PetriNetUnfolder]: 750/2231 cut-off events. [2022-11-16 11:11:00,549 INFO L131 PetriNetUnfolder]: For 101504/101504 co-relation queries the response was YES. [2022-11-16 11:11:00,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23178 conditions, 2231 events. 750/2231 cut-off events. For 101504/101504 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 17124 event pairs, 47 based on Foata normal form. 1/2229 useless extension candidates. Maximal degree in co-relation 22907. Up to 1646 conditions per place. [2022-11-16 11:11:00,600 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 854 selfloop transitions, 153 changer transitions 18/1064 dead transitions. [2022-11-16 11:11:00,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 771 places, 1064 transitions, 21680 flow [2022-11-16 11:11:00,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 11:11:00,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 11:11:00,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1872 transitions. [2022-11-16 11:11:00,602 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5689969604863222 [2022-11-16 11:11:00,603 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1872 transitions. [2022-11-16 11:11:00,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1872 transitions. [2022-11-16 11:11:00,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:11:00,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1872 transitions. [2022-11-16 11:11:00,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.48571428571429) internal successors, (1872), 35 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:00,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:00,607 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:00,607 INFO L175 Difference]: Start difference. First operand has 744 places, 1016 transitions, 18494 flow. Second operand 35 states and 1872 transitions. [2022-11-16 11:11:00,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 771 places, 1064 transitions, 21680 flow [2022-11-16 11:11:01,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 735 places, 1064 transitions, 21264 flow, removed 80 selfloop flow, removed 36 redundant places. [2022-11-16 11:11:01,788 INFO L231 Difference]: Finished difference. Result has 743 places, 1024 transitions, 18823 flow [2022-11-16 11:11:01,788 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=18100, PETRI_DIFFERENCE_MINUEND_PLACES=701, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1016, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=868, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=18823, PETRI_PLACES=743, PETRI_TRANSITIONS=1024} [2022-11-16 11:11:01,789 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 655 predicate places. [2022-11-16 11:11:01,789 INFO L495 AbstractCegarLoop]: Abstraction has has 743 places, 1024 transitions, 18823 flow [2022-11-16 11:11:01,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:01,789 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:11:01,789 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:01,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2022-11-16 11:11:01,790 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:11:01,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:01,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1758491220, now seen corresponding path program 175 times [2022-11-16 11:11:01,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:01,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620525639] [2022-11-16 11:11:01,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:01,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:01,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:02,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:11:02,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:02,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620525639] [2022-11-16 11:11:02,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620525639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:02,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:02,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:11:02,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575664743] [2022-11-16 11:11:02,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:02,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:11:02,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:02,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:11:02,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:11:02,323 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:11:02,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 743 places, 1024 transitions, 18823 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:02,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:11:02,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:11:02,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:11:05,240 INFO L130 PetriNetUnfolder]: 757/2248 cut-off events. [2022-11-16 11:11:05,241 INFO L131 PetriNetUnfolder]: For 105375/105375 co-relation queries the response was YES. [2022-11-16 11:11:05,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23583 conditions, 2248 events. 757/2248 cut-off events. For 105375/105375 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 17267 event pairs, 50 based on Foata normal form. 1/2246 useless extension candidates. Maximal degree in co-relation 23311. Up to 1696 conditions per place. [2022-11-16 11:11:05,290 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 899 selfloop transitions, 120 changer transitions 20/1078 dead transitions. [2022-11-16 11:11:05,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 771 places, 1078 transitions, 22079 flow [2022-11-16 11:11:05,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 11:11:05,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-16 11:11:05,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1812 transitions. [2022-11-16 11:11:05,293 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5669586983729662 [2022-11-16 11:11:05,293 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1812 transitions. [2022-11-16 11:11:05,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1812 transitions. [2022-11-16 11:11:05,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:11:05,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1812 transitions. [2022-11-16 11:11:05,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.294117647058826) internal successors, (1812), 34 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:05,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:05,297 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:05,297 INFO L175 Difference]: Start difference. First operand has 743 places, 1024 transitions, 18823 flow. Second operand 34 states and 1812 transitions. [2022-11-16 11:11:05,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 771 places, 1078 transitions, 22079 flow [2022-11-16 11:11:06,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 746 places, 1078 transitions, 21591 flow, removed 171 selfloop flow, removed 25 redundant places. [2022-11-16 11:11:06,599 INFO L231 Difference]: Finished difference. Result has 757 places, 1039 transitions, 19093 flow [2022-11-16 11:11:06,600 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=18384, PETRI_DIFFERENCE_MINUEND_PLACES=713, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1024, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=912, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=19093, PETRI_PLACES=757, PETRI_TRANSITIONS=1039} [2022-11-16 11:11:06,601 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 669 predicate places. [2022-11-16 11:11:06,601 INFO L495 AbstractCegarLoop]: Abstraction has has 757 places, 1039 transitions, 19093 flow [2022-11-16 11:11:06,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:06,601 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:11:06,601 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:06,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2022-11-16 11:11:06,602 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:11:06,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:06,602 INFO L85 PathProgramCache]: Analyzing trace with hash 236371498, now seen corresponding path program 176 times [2022-11-16 11:11:06,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:06,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974781210] [2022-11-16 11:11:06,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:06,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:06,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:07,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:11:07,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:07,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974781210] [2022-11-16 11:11:07,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974781210] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:07,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:07,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-16 11:11:07,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540101965] [2022-11-16 11:11:07,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:07,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:11:07,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:07,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:11:07,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:11:07,355 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:11:07,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 757 places, 1039 transitions, 19093 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:07,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:11:07,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:11:07,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:11:10,955 INFO L130 PetriNetUnfolder]: 763/2251 cut-off events. [2022-11-16 11:11:10,955 INFO L131 PetriNetUnfolder]: For 108242/108242 co-relation queries the response was YES. [2022-11-16 11:11:10,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23885 conditions, 2251 events. 763/2251 cut-off events. For 108242/108242 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 17290 event pairs, 48 based on Foata normal form. 1/2250 useless extension candidates. Maximal degree in co-relation 23607. Up to 1677 conditions per place. [2022-11-16 11:11:10,995 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 893 selfloop transitions, 124 changer transitions 27/1083 dead transitions. [2022-11-16 11:11:10,996 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 787 places, 1083 transitions, 22245 flow [2022-11-16 11:11:10,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-16 11:11:10,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-16 11:11:10,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1950 transitions. [2022-11-16 11:11:10,998 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5606670500287522 [2022-11-16 11:11:10,998 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1950 transitions. [2022-11-16 11:11:10,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1950 transitions. [2022-11-16 11:11:10,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:11:10,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1950 transitions. [2022-11-16 11:11:11,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.7027027027027) internal successors, (1950), 37 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:11,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:11,002 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:11,002 INFO L175 Difference]: Start difference. First operand has 757 places, 1039 transitions, 19093 flow. Second operand 37 states and 1950 transitions. [2022-11-16 11:11:11,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 787 places, 1083 transitions, 22245 flow [2022-11-16 11:11:12,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 762 places, 1083 transitions, 21736 flow, removed 163 selfloop flow, removed 25 redundant places. [2022-11-16 11:11:12,144 INFO L231 Difference]: Finished difference. Result has 773 places, 1039 transitions, 19108 flow [2022-11-16 11:11:12,145 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=18598, PETRI_DIFFERENCE_MINUEND_PLACES=726, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1039, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=916, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=19108, PETRI_PLACES=773, PETRI_TRANSITIONS=1039} [2022-11-16 11:11:12,145 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 685 predicate places. [2022-11-16 11:11:12,145 INFO L495 AbstractCegarLoop]: Abstraction has has 773 places, 1039 transitions, 19108 flow [2022-11-16 11:11:12,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:12,146 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:11:12,146 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:12,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2022-11-16 11:11:12,146 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:11:12,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:12,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1080236758, now seen corresponding path program 177 times [2022-11-16 11:11:12,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:12,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946530105] [2022-11-16 11:11:12,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:12,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:12,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:11:12,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:12,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946530105] [2022-11-16 11:11:12,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946530105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:12,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:12,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-16 11:11:12,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69613360] [2022-11-16 11:11:12,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:12,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:11:12,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:12,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:11:12,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:11:12,667 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:11:12,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 773 places, 1039 transitions, 19108 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:12,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:11:12,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:11:12,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:11:15,856 INFO L130 PetriNetUnfolder]: 751/2243 cut-off events. [2022-11-16 11:11:15,857 INFO L131 PetriNetUnfolder]: For 110067/110067 co-relation queries the response was YES. [2022-11-16 11:11:15,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23703 conditions, 2243 events. 751/2243 cut-off events. For 110067/110067 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 17342 event pairs, 50 based on Foata normal form. 1/2241 useless extension candidates. Maximal degree in co-relation 23420. Up to 1687 conditions per place. [2022-11-16 11:11:15,896 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 894 selfloop transitions, 118 changer transitions 18/1069 dead transitions. [2022-11-16 11:11:15,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 799 places, 1069 transitions, 21590 flow [2022-11-16 11:11:15,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 11:11:15,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 11:11:15,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1841 transitions. [2022-11-16 11:11:15,898 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5595744680851064 [2022-11-16 11:11:15,898 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1841 transitions. [2022-11-16 11:11:15,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1841 transitions. [2022-11-16 11:11:15,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:11:15,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1841 transitions. [2022-11-16 11:11:15,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.6) internal successors, (1841), 35 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:15,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:15,902 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:15,902 INFO L175 Difference]: Start difference. First operand has 773 places, 1039 transitions, 19108 flow. Second operand 35 states and 1841 transitions. [2022-11-16 11:11:15,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 799 places, 1069 transitions, 21590 flow [2022-11-16 11:11:17,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 766 places, 1069 transitions, 21101 flow, removed 146 selfloop flow, removed 33 redundant places. [2022-11-16 11:11:17,023 INFO L231 Difference]: Finished difference. Result has 773 places, 1036 transitions, 18856 flow [2022-11-16 11:11:17,024 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=18633, PETRI_DIFFERENCE_MINUEND_PLACES=732, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1039, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=921, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=18856, PETRI_PLACES=773, PETRI_TRANSITIONS=1036} [2022-11-16 11:11:17,024 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 685 predicate places. [2022-11-16 11:11:17,024 INFO L495 AbstractCegarLoop]: Abstraction has has 773 places, 1036 transitions, 18856 flow [2022-11-16 11:11:17,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:17,025 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:11:17,025 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:17,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2022-11-16 11:11:17,025 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:11:17,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:17,025 INFO L85 PathProgramCache]: Analyzing trace with hash -907608988, now seen corresponding path program 178 times [2022-11-16 11:11:17,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:17,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672011142] [2022-11-16 11:11:17,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:17,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:17,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:17,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:11:17,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:17,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672011142] [2022-11-16 11:11:17,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672011142] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:17,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:17,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:11:17,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380289250] [2022-11-16 11:11:17,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:17,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:11:17,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:17,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:11:17,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:11:17,496 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:11:17,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 773 places, 1036 transitions, 18856 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:17,496 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:11:17,497 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:11:17,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:11:20,555 INFO L130 PetriNetUnfolder]: 769/2296 cut-off events. [2022-11-16 11:11:20,555 INFO L131 PetriNetUnfolder]: For 112103/112103 co-relation queries the response was YES. [2022-11-16 11:11:20,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24273 conditions, 2296 events. 769/2296 cut-off events. For 112103/112103 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 17861 event pairs, 46 based on Foata normal form. 1/2294 useless extension candidates. Maximal degree in co-relation 23991. Up to 1701 conditions per place. [2022-11-16 11:11:20,597 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 910 selfloop transitions, 149 changer transitions 21/1119 dead transitions. [2022-11-16 11:11:20,598 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 796 places, 1119 transitions, 22870 flow [2022-11-16 11:11:20,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 11:11:20,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-16 11:11:20,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1715 transitions. [2022-11-16 11:11:20,600 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5701462765957447 [2022-11-16 11:11:20,600 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1715 transitions. [2022-11-16 11:11:20,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1715 transitions. [2022-11-16 11:11:20,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:11:20,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1715 transitions. [2022-11-16 11:11:20,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.59375) internal successors, (1715), 32 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:20,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:20,605 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:20,605 INFO L175 Difference]: Start difference. First operand has 773 places, 1036 transitions, 18856 flow. Second operand 32 states and 1715 transitions. [2022-11-16 11:11:20,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 796 places, 1119 transitions, 22870 flow [2022-11-16 11:11:21,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 760 places, 1119 transitions, 22535 flow, removed 21 selfloop flow, removed 36 redundant places. [2022-11-16 11:11:21,813 INFO L231 Difference]: Finished difference. Result has 769 places, 1067 transitions, 19664 flow [2022-11-16 11:11:21,814 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=18541, PETRI_DIFFERENCE_MINUEND_PLACES=729, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1036, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=891, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=19664, PETRI_PLACES=769, PETRI_TRANSITIONS=1067} [2022-11-16 11:11:21,814 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 681 predicate places. [2022-11-16 11:11:21,814 INFO L495 AbstractCegarLoop]: Abstraction has has 769 places, 1067 transitions, 19664 flow [2022-11-16 11:11:21,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:21,814 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:11:21,814 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:21,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2022-11-16 11:11:21,815 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:11:21,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:21,815 INFO L85 PathProgramCache]: Analyzing trace with hash 515317298, now seen corresponding path program 179 times [2022-11-16 11:11:21,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:21,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680936161] [2022-11-16 11:11:21,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:21,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:21,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:22,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:11:22,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:22,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680936161] [2022-11-16 11:11:22,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680936161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:22,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:22,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:11:22,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421651330] [2022-11-16 11:11:22,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:22,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:11:22,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:22,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:11:22,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:11:22,431 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:11:22,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 769 places, 1067 transitions, 19664 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:22,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:11:22,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:11:22,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:11:25,452 INFO L130 PetriNetUnfolder]: 764/2290 cut-off events. [2022-11-16 11:11:25,452 INFO L131 PetriNetUnfolder]: For 114913/114913 co-relation queries the response was YES. [2022-11-16 11:11:25,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24426 conditions, 2290 events. 764/2290 cut-off events. For 114913/114913 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 17772 event pairs, 45 based on Foata normal form. 1/2288 useless extension candidates. Maximal degree in co-relation 24143. Up to 1711 conditions per place. [2022-11-16 11:11:25,503 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 906 selfloop transitions, 150 changer transitions 20/1115 dead transitions. [2022-11-16 11:11:25,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 798 places, 1115 transitions, 22978 flow [2022-11-16 11:11:25,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 11:11:25,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 11:11:25,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1868 transitions. [2022-11-16 11:11:25,513 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5677811550151975 [2022-11-16 11:11:25,513 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1868 transitions. [2022-11-16 11:11:25,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1868 transitions. [2022-11-16 11:11:25,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:11:25,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1868 transitions. [2022-11-16 11:11:25,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.371428571428574) internal successors, (1868), 35 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:25,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:25,520 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:25,520 INFO L175 Difference]: Start difference. First operand has 769 places, 1067 transitions, 19664 flow. Second operand 35 states and 1868 transitions. [2022-11-16 11:11:25,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 798 places, 1115 transitions, 22978 flow [2022-11-16 11:11:26,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 774 places, 1115 transitions, 22342 flow, removed 240 selfloop flow, removed 24 redundant places. [2022-11-16 11:11:26,835 INFO L231 Difference]: Finished difference. Result has 784 places, 1076 transitions, 19782 flow [2022-11-16 11:11:26,836 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=19084, PETRI_DIFFERENCE_MINUEND_PLACES=740, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1067, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=922, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=19782, PETRI_PLACES=784, PETRI_TRANSITIONS=1076} [2022-11-16 11:11:26,837 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 696 predicate places. [2022-11-16 11:11:26,837 INFO L495 AbstractCegarLoop]: Abstraction has has 784 places, 1076 transitions, 19782 flow [2022-11-16 11:11:26,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:26,837 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:11:26,837 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:26,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2022-11-16 11:11:26,838 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:11:26,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:26,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1989530518, now seen corresponding path program 180 times [2022-11-16 11:11:26,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:26,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354262952] [2022-11-16 11:11:26,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:26,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:26,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:27,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:11:27,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:27,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354262952] [2022-11-16 11:11:27,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354262952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:27,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:27,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:11:27,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112612451] [2022-11-16 11:11:27,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:27,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:11:27,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:27,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:11:27,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:11:27,366 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:11:27,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 784 places, 1076 transitions, 19782 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:27,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:11:27,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:11:27,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:11:30,243 INFO L130 PetriNetUnfolder]: 780/2308 cut-off events. [2022-11-16 11:11:30,243 INFO L131 PetriNetUnfolder]: For 119861/119861 co-relation queries the response was YES. [2022-11-16 11:11:30,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24975 conditions, 2308 events. 780/2308 cut-off events. For 119861/119861 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 17910 event pairs, 42 based on Foata normal form. 1/2306 useless extension candidates. Maximal degree in co-relation 24685. Up to 1653 conditions per place. [2022-11-16 11:11:30,287 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 887 selfloop transitions, 187 changer transitions 29/1142 dead transitions. [2022-11-16 11:11:30,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 812 places, 1142 transitions, 23570 flow [2022-11-16 11:11:30,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 11:11:30,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 11:11:30,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1858 transitions. [2022-11-16 11:11:30,290 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.564741641337386 [2022-11-16 11:11:30,290 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1858 transitions. [2022-11-16 11:11:30,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1858 transitions. [2022-11-16 11:11:30,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:11:30,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1858 transitions. [2022-11-16 11:11:30,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.08571428571429) internal successors, (1858), 35 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:30,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:30,293 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:30,293 INFO L175 Difference]: Start difference. First operand has 784 places, 1076 transitions, 19782 flow. Second operand 35 states and 1858 transitions. [2022-11-16 11:11:30,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 812 places, 1142 transitions, 23570 flow [2022-11-16 11:11:31,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 785 places, 1142 transitions, 22948 flow, removed 202 selfloop flow, removed 27 redundant places. [2022-11-16 11:11:31,544 INFO L231 Difference]: Finished difference. Result has 796 places, 1092 transitions, 20296 flow [2022-11-16 11:11:31,545 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=19186, PETRI_DIFFERENCE_MINUEND_PLACES=751, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1076, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=890, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=20296, PETRI_PLACES=796, PETRI_TRANSITIONS=1092} [2022-11-16 11:11:31,545 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 708 predicate places. [2022-11-16 11:11:31,545 INFO L495 AbstractCegarLoop]: Abstraction has has 796 places, 1092 transitions, 20296 flow [2022-11-16 11:11:31,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:31,545 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:11:31,546 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:31,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2022-11-16 11:11:31,546 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:11:31,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:31,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1403062422, now seen corresponding path program 181 times [2022-11-16 11:11:31,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:31,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134072854] [2022-11-16 11:11:31,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:31,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:31,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:32,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:11:32,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:32,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134072854] [2022-11-16 11:11:32,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134072854] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:32,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:32,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:11:32,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67903987] [2022-11-16 11:11:32,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:32,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:11:32,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:32,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:11:32,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:11:32,023 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:11:32,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 796 places, 1092 transitions, 20296 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:32,024 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:11:32,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:11:32,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:11:35,016 INFO L130 PetriNetUnfolder]: 765/2291 cut-off events. [2022-11-16 11:11:35,017 INFO L131 PetriNetUnfolder]: For 117160/117160 co-relation queries the response was YES. [2022-11-16 11:11:35,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24647 conditions, 2291 events. 765/2291 cut-off events. For 117160/117160 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 17895 event pairs, 41 based on Foata normal form. 1/2290 useless extension candidates. Maximal degree in co-relation 24355. Up to 1657 conditions per place. [2022-11-16 11:11:35,057 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 888 selfloop transitions, 169 changer transitions 30/1126 dead transitions. [2022-11-16 11:11:35,057 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 822 places, 1126 transitions, 22945 flow [2022-11-16 11:11:35,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 11:11:35,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-16 11:11:35,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1749 transitions. [2022-11-16 11:11:35,060 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2022-11-16 11:11:35,060 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1749 transitions. [2022-11-16 11:11:35,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1749 transitions. [2022-11-16 11:11:35,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:11:35,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1749 transitions. [2022-11-16 11:11:35,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.0) internal successors, (1749), 33 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:35,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:35,063 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:35,063 INFO L175 Difference]: Start difference. First operand has 796 places, 1092 transitions, 20296 flow. Second operand 33 states and 1749 transitions. [2022-11-16 11:11:35,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 822 places, 1126 transitions, 22945 flow [2022-11-16 11:11:36,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 794 places, 1126 transitions, 22417 flow, removed 158 selfloop flow, removed 28 redundant places. [2022-11-16 11:11:36,319 INFO L231 Difference]: Finished difference. Result has 801 places, 1077 transitions, 19783 flow [2022-11-16 11:11:36,319 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=19776, PETRI_DIFFERENCE_MINUEND_PLACES=762, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1092, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=923, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=19783, PETRI_PLACES=801, PETRI_TRANSITIONS=1077} [2022-11-16 11:11:36,320 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 713 predicate places. [2022-11-16 11:11:36,320 INFO L495 AbstractCegarLoop]: Abstraction has has 801 places, 1077 transitions, 19783 flow [2022-11-16 11:11:36,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:36,320 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:11:36,320 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:36,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2022-11-16 11:11:36,320 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:11:36,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:36,320 INFO L85 PathProgramCache]: Analyzing trace with hash -2055406876, now seen corresponding path program 182 times [2022-11-16 11:11:36,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:36,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010320122] [2022-11-16 11:11:36,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:36,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:36,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:11:36,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:36,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010320122] [2022-11-16 11:11:36,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010320122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:36,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:36,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:11:36,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145745592] [2022-11-16 11:11:36,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:36,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:11:36,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:36,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:11:36,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:11:36,767 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:11:36,767 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 801 places, 1077 transitions, 19783 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:36,767 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:11:36,767 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:11:36,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:11:39,598 INFO L130 PetriNetUnfolder]: 753/2256 cut-off events. [2022-11-16 11:11:39,598 INFO L131 PetriNetUnfolder]: For 116775/116775 co-relation queries the response was YES. [2022-11-16 11:11:39,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24281 conditions, 2256 events. 753/2256 cut-off events. For 116775/116775 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 17481 event pairs, 46 based on Foata normal form. 1/2254 useless extension candidates. Maximal degree in co-relation 23987. Up to 1729 conditions per place. [2022-11-16 11:11:39,647 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 936 selfloop transitions, 113 changer transitions 22/1110 dead transitions. [2022-11-16 11:11:39,647 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 823 places, 1110 transitions, 22378 flow [2022-11-16 11:11:39,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 11:11:39,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-16 11:11:39,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1656 transitions. [2022-11-16 11:11:39,650 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5682910089224433 [2022-11-16 11:11:39,650 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1656 transitions. [2022-11-16 11:11:39,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1656 transitions. [2022-11-16 11:11:39,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:11:39,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1656 transitions. [2022-11-16 11:11:39,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.41935483870968) internal successors, (1656), 31 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:39,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:39,653 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:39,653 INFO L175 Difference]: Start difference. First operand has 801 places, 1077 transitions, 19783 flow. Second operand 31 states and 1656 transitions. [2022-11-16 11:11:39,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 823 places, 1110 transitions, 22378 flow [2022-11-16 11:11:40,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 788 places, 1110 transitions, 21807 flow, removed 39 selfloop flow, removed 35 redundant places. [2022-11-16 11:11:41,081 INFO L231 Difference]: Finished difference. Result has 796 places, 1070 transitions, 19443 flow [2022-11-16 11:11:41,081 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=19222, PETRI_DIFFERENCE_MINUEND_PLACES=758, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1077, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=964, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=19443, PETRI_PLACES=796, PETRI_TRANSITIONS=1070} [2022-11-16 11:11:41,081 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 708 predicate places. [2022-11-16 11:11:41,081 INFO L495 AbstractCegarLoop]: Abstraction has has 796 places, 1070 transitions, 19443 flow [2022-11-16 11:11:41,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:41,082 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:11:41,082 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:41,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2022-11-16 11:11:41,082 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:11:41,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:41,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1453290080, now seen corresponding path program 183 times [2022-11-16 11:11:41,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:41,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361624616] [2022-11-16 11:11:41,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:41,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:41,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:41,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:11:41,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:41,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361624616] [2022-11-16 11:11:41,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361624616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:41,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:41,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:11:41,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794666238] [2022-11-16 11:11:41,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:41,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:11:41,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:41,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:11:41,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:11:41,558 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:11:41,558 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 796 places, 1070 transitions, 19443 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:41,558 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:11:41,558 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:11:41,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:11:44,542 INFO L130 PetriNetUnfolder]: 767/2286 cut-off events. [2022-11-16 11:11:44,543 INFO L131 PetriNetUnfolder]: For 117251/117251 co-relation queries the response was YES. [2022-11-16 11:11:44,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24522 conditions, 2286 events. 767/2286 cut-off events. For 117251/117251 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 17688 event pairs, 38 based on Foata normal form. 1/2285 useless extension candidates. Maximal degree in co-relation 24230. Up to 1506 conditions per place. [2022-11-16 11:11:44,584 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 830 selfloop transitions, 264 changer transitions 24/1157 dead transitions. [2022-11-16 11:11:44,585 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 826 places, 1157 transitions, 23529 flow [2022-11-16 11:11:44,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-16 11:11:44,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-11-16 11:11:44,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 2221 transitions. [2022-11-16 11:11:44,587 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5625633232016211 [2022-11-16 11:11:44,587 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 2221 transitions. [2022-11-16 11:11:44,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 2221 transitions. [2022-11-16 11:11:44,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:11:44,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 2221 transitions. [2022-11-16 11:11:44,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 52.88095238095238) internal successors, (2221), 42 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:44,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 94.0) internal successors, (4042), 43 states have internal predecessors, (4042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:44,591 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 94.0) internal successors, (4042), 43 states have internal predecessors, (4042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:44,591 INFO L175 Difference]: Start difference. First operand has 796 places, 1070 transitions, 19443 flow. Second operand 42 states and 2221 transitions. [2022-11-16 11:11:44,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 826 places, 1157 transitions, 23529 flow [2022-11-16 11:11:45,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 796 places, 1157 transitions, 23240 flow, removed 22 selfloop flow, removed 30 redundant places. [2022-11-16 11:11:45,847 INFO L231 Difference]: Finished difference. Result has 805 places, 1097 transitions, 20550 flow [2022-11-16 11:11:45,848 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=19180, PETRI_DIFFERENCE_MINUEND_PLACES=755, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1070, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=818, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=20550, PETRI_PLACES=805, PETRI_TRANSITIONS=1097} [2022-11-16 11:11:45,848 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 717 predicate places. [2022-11-16 11:11:45,848 INFO L495 AbstractCegarLoop]: Abstraction has has 805 places, 1097 transitions, 20550 flow [2022-11-16 11:11:45,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:45,848 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:11:45,849 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:45,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2022-11-16 11:11:45,849 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:11:45,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:45,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1113130446, now seen corresponding path program 184 times [2022-11-16 11:11:45,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:45,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643407224] [2022-11-16 11:11:45,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:45,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:45,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:46,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:11:46,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:46,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643407224] [2022-11-16 11:11:46,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643407224] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:46,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:46,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:11:46,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295087302] [2022-11-16 11:11:46,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:46,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:11:46,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:46,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:11:46,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:11:46,416 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:11:46,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 805 places, 1097 transitions, 20550 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:46,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:11:46,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:11:46,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:11:49,404 INFO L130 PetriNetUnfolder]: 759/2273 cut-off events. [2022-11-16 11:11:49,405 INFO L131 PetriNetUnfolder]: For 120444/120444 co-relation queries the response was YES. [2022-11-16 11:11:49,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24715 conditions, 2273 events. 759/2273 cut-off events. For 120444/120444 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 17633 event pairs, 48 based on Foata normal form. 1/2271 useless extension candidates. Maximal degree in co-relation 24423. Up to 1727 conditions per place. [2022-11-16 11:11:49,449 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 945 selfloop transitions, 123 changer transitions 21/1128 dead transitions. [2022-11-16 11:11:49,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 831 places, 1128 transitions, 23157 flow [2022-11-16 11:11:49,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 11:11:49,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-16 11:11:49,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1708 transitions. [2022-11-16 11:11:49,452 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5678191489361702 [2022-11-16 11:11:49,452 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1708 transitions. [2022-11-16 11:11:49,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1708 transitions. [2022-11-16 11:11:49,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:11:49,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1708 transitions. [2022-11-16 11:11:49,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.375) internal successors, (1708), 32 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:49,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:49,455 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:49,455 INFO L175 Difference]: Start difference. First operand has 805 places, 1097 transitions, 20550 flow. Second operand 32 states and 1708 transitions. [2022-11-16 11:11:49,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 831 places, 1128 transitions, 23157 flow [2022-11-16 11:11:50,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 801 places, 1128 transitions, 22643 flow, removed 161 selfloop flow, removed 30 redundant places. [2022-11-16 11:11:50,842 INFO L231 Difference]: Finished difference. Result has 809 places, 1090 transitions, 20292 flow [2022-11-16 11:11:50,842 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=20046, PETRI_DIFFERENCE_MINUEND_PLACES=770, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1097, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=974, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=20292, PETRI_PLACES=809, PETRI_TRANSITIONS=1090} [2022-11-16 11:11:50,842 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 721 predicate places. [2022-11-16 11:11:50,842 INFO L495 AbstractCegarLoop]: Abstraction has has 809 places, 1090 transitions, 20292 flow [2022-11-16 11:11:50,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:50,843 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:11:50,843 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:50,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2022-11-16 11:11:50,843 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:11:50,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:50,843 INFO L85 PathProgramCache]: Analyzing trace with hash -128343728, now seen corresponding path program 185 times [2022-11-16 11:11:50,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:50,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953747773] [2022-11-16 11:11:50,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:50,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:51,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:11:51,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:51,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953747773] [2022-11-16 11:11:51,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953747773] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:51,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:51,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:11:51,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023374176] [2022-11-16 11:11:51,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:51,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:11:51,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:51,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:11:51,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:11:51,333 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:11:51,333 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 809 places, 1090 transitions, 20292 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:51,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:11:51,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:11:51,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:11:55,052 INFO L130 PetriNetUnfolder]: 762/2284 cut-off events. [2022-11-16 11:11:55,052 INFO L131 PetriNetUnfolder]: For 110537/110537 co-relation queries the response was YES. [2022-11-16 11:11:55,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24410 conditions, 2284 events. 762/2284 cut-off events. For 110537/110537 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 17663 event pairs, 47 based on Foata normal form. 1/2282 useless extension candidates. Maximal degree in co-relation 24113. Up to 1682 conditions per place. [2022-11-16 11:11:55,093 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 890 selfloop transitions, 193 changer transitions 20/1142 dead transitions. [2022-11-16 11:11:55,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 838 places, 1142 transitions, 23768 flow [2022-11-16 11:11:55,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-16 11:11:55,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-16 11:11:55,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 2174 transitions. [2022-11-16 11:11:55,096 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5640892579138558 [2022-11-16 11:11:55,096 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 2174 transitions. [2022-11-16 11:11:55,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 2174 transitions. [2022-11-16 11:11:55,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:11:55,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 2174 transitions. [2022-11-16 11:11:55,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 53.02439024390244) internal successors, (2174), 41 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:55,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:55,101 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:55,101 INFO L175 Difference]: Start difference. First operand has 809 places, 1090 transitions, 20292 flow. Second operand 41 states and 2174 transitions. [2022-11-16 11:11:55,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 838 places, 1142 transitions, 23768 flow [2022-11-16 11:11:56,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 806 places, 1142 transitions, 23432 flow, removed 30 selfloop flow, removed 32 redundant places. [2022-11-16 11:11:56,487 INFO L231 Difference]: Finished difference. Result has 817 places, 1101 transitions, 20870 flow [2022-11-16 11:11:56,487 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=19994, PETRI_DIFFERENCE_MINUEND_PLACES=766, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1090, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=903, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=20870, PETRI_PLACES=817, PETRI_TRANSITIONS=1101} [2022-11-16 11:11:56,487 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 729 predicate places. [2022-11-16 11:11:56,487 INFO L495 AbstractCegarLoop]: Abstraction has has 817 places, 1101 transitions, 20870 flow [2022-11-16 11:11:56,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:56,488 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:11:56,488 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:56,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2022-11-16 11:11:56,488 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:11:56,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:56,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1481517968, now seen corresponding path program 186 times [2022-11-16 11:11:56,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:56,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591330742] [2022-11-16 11:11:56,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:56,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:56,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:11:56,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:56,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591330742] [2022-11-16 11:11:56,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591330742] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:56,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:56,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:11:56,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938513536] [2022-11-16 11:11:56,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:56,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:11:56,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:56,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:11:56,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:11:56,975 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:11:56,976 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 817 places, 1101 transitions, 20870 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:56,976 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:11:56,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:11:56,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:00,599 INFO L130 PetriNetUnfolder]: 771/2284 cut-off events. [2022-11-16 11:12:00,599 INFO L131 PetriNetUnfolder]: For 115339/115339 co-relation queries the response was YES. [2022-11-16 11:12:00,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24996 conditions, 2284 events. 771/2284 cut-off events. For 115339/115339 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 17704 event pairs, 46 based on Foata normal form. 1/2283 useless extension candidates. Maximal degree in co-relation 24698. Up to 1660 conditions per place. [2022-11-16 11:12:00,654 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 902 selfloop transitions, 187 changer transitions 30/1158 dead transitions. [2022-11-16 11:12:00,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 847 places, 1158 transitions, 24454 flow [2022-11-16 11:12:00,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-16 11:12:00,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-16 11:12:00,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1957 transitions. [2022-11-16 11:12:00,657 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5626797009775734 [2022-11-16 11:12:00,657 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1957 transitions. [2022-11-16 11:12:00,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1957 transitions. [2022-11-16 11:12:00,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:00,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1957 transitions. [2022-11-16 11:12:00,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.891891891891895) internal successors, (1957), 37 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:00,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:00,662 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:00,662 INFO L175 Difference]: Start difference. First operand has 817 places, 1101 transitions, 20870 flow. Second operand 37 states and 1957 transitions. [2022-11-16 11:12:00,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 847 places, 1158 transitions, 24454 flow [2022-11-16 11:12:02,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 816 places, 1158 transitions, 23828 flow, removed 180 selfloop flow, removed 31 redundant places. [2022-11-16 11:12:02,305 INFO L231 Difference]: Finished difference. Result has 826 places, 1107 transitions, 21120 flow [2022-11-16 11:12:02,305 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=20270, PETRI_DIFFERENCE_MINUEND_PLACES=780, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=915, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=21120, PETRI_PLACES=826, PETRI_TRANSITIONS=1107} [2022-11-16 11:12:02,306 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 738 predicate places. [2022-11-16 11:12:02,306 INFO L495 AbstractCegarLoop]: Abstraction has has 826 places, 1107 transitions, 21120 flow [2022-11-16 11:12:02,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:02,306 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:02,306 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:02,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2022-11-16 11:12:02,306 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:12:02,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:02,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1756791472, now seen corresponding path program 187 times [2022-11-16 11:12:02,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:02,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199950681] [2022-11-16 11:12:02,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:02,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:02,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:02,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:02,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:02,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199950681] [2022-11-16 11:12:02,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199950681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:02,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:02,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:12:02,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134911750] [2022-11-16 11:12:02,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:02,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:12:02,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:02,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:12:02,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:12:02,810 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:12:02,811 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 826 places, 1107 transitions, 21120 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:02,811 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:02,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:12:02,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:06,341 INFO L130 PetriNetUnfolder]: 758/2264 cut-off events. [2022-11-16 11:12:06,342 INFO L131 PetriNetUnfolder]: For 108428/108428 co-relation queries the response was YES. [2022-11-16 11:12:06,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24494 conditions, 2264 events. 758/2264 cut-off events. For 108428/108428 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 17545 event pairs, 52 based on Foata normal form. 1/2262 useless extension candidates. Maximal degree in co-relation 24194. Up to 1698 conditions per place. [2022-11-16 11:12:06,393 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 929 selfloop transitions, 150 changer transitions 21/1139 dead transitions. [2022-11-16 11:12:06,394 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 854 places, 1139 transitions, 23775 flow [2022-11-16 11:12:06,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-16 11:12:06,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-16 11:12:06,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2015 transitions. [2022-11-16 11:12:06,396 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5641097424412094 [2022-11-16 11:12:06,396 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2015 transitions. [2022-11-16 11:12:06,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2015 transitions. [2022-11-16 11:12:06,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:06,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2015 transitions. [2022-11-16 11:12:06,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 53.026315789473685) internal successors, (2015), 38 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:06,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:06,402 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:06,402 INFO L175 Difference]: Start difference. First operand has 826 places, 1107 transitions, 21120 flow. Second operand 38 states and 2015 transitions. [2022-11-16 11:12:06,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 854 places, 1139 transitions, 23775 flow [2022-11-16 11:12:07,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 824 places, 1139 transitions, 23195 flow, removed 108 selfloop flow, removed 30 redundant places. [2022-11-16 11:12:07,761 INFO L231 Difference]: Finished difference. Result has 832 places, 1100 transitions, 20852 flow [2022-11-16 11:12:07,761 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=20552, PETRI_DIFFERENCE_MINUEND_PLACES=787, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=957, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=20852, PETRI_PLACES=832, PETRI_TRANSITIONS=1100} [2022-11-16 11:12:07,762 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 744 predicate places. [2022-11-16 11:12:07,762 INFO L495 AbstractCegarLoop]: Abstraction has has 832 places, 1100 transitions, 20852 flow [2022-11-16 11:12:07,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:07,762 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:07,762 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:07,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2022-11-16 11:12:07,762 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:12:07,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:07,763 INFO L85 PathProgramCache]: Analyzing trace with hash 185541212, now seen corresponding path program 188 times [2022-11-16 11:12:07,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:07,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157427427] [2022-11-16 11:12:07,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:07,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:07,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:08,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:08,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:08,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157427427] [2022-11-16 11:12:08,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157427427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:08,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:08,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:12:08,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236876931] [2022-11-16 11:12:08,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:08,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:12:08,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:08,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:12:08,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:12:08,247 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:12:08,248 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 832 places, 1100 transitions, 20852 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:08,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:08,248 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:12:08,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:11,620 INFO L130 PetriNetUnfolder]: 800/2429 cut-off events. [2022-11-16 11:12:11,621 INFO L131 PetriNetUnfolder]: For 114538/114538 co-relation queries the response was YES. [2022-11-16 11:12:11,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25882 conditions, 2429 events. 800/2429 cut-off events. For 114538/114538 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 19283 event pairs, 44 based on Foata normal form. 1/2427 useless extension candidates. Maximal degree in co-relation 25582. Up to 1764 conditions per place. [2022-11-16 11:12:11,679 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 972 selfloop transitions, 183 changer transitions 21/1215 dead transitions. [2022-11-16 11:12:11,680 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 857 places, 1215 transitions, 25681 flow [2022-11-16 11:12:11,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-16 11:12:11,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-16 11:12:11,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1974 transitions. [2022-11-16 11:12:11,682 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5675675675675675 [2022-11-16 11:12:11,683 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1974 transitions. [2022-11-16 11:12:11,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1974 transitions. [2022-11-16 11:12:11,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:11,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1974 transitions. [2022-11-16 11:12:11,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 53.351351351351354) internal successors, (1974), 37 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:11,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:11,687 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:11,687 INFO L175 Difference]: Start difference. First operand has 832 places, 1100 transitions, 20852 flow. Second operand 37 states and 1974 transitions. [2022-11-16 11:12:11,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 857 places, 1215 transitions, 25681 flow [2022-11-16 11:12:13,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 818 places, 1215 transitions, 25275 flow, removed 24 selfloop flow, removed 39 redundant places. [2022-11-16 11:12:13,475 INFO L231 Difference]: Finished difference. Result has 830 places, 1166 transitions, 22597 flow [2022-11-16 11:12:13,475 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=20478, PETRI_DIFFERENCE_MINUEND_PLACES=782, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=929, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=22597, PETRI_PLACES=830, PETRI_TRANSITIONS=1166} [2022-11-16 11:12:13,475 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 742 predicate places. [2022-11-16 11:12:13,476 INFO L495 AbstractCegarLoop]: Abstraction has has 830 places, 1166 transitions, 22597 flow [2022-11-16 11:12:13,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:13,476 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:13,476 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:13,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2022-11-16 11:12:13,476 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:12:13,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:13,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1539390926, now seen corresponding path program 189 times [2022-11-16 11:12:13,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:13,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618761943] [2022-11-16 11:12:13,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:13,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:13,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:14,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:14,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:14,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618761943] [2022-11-16 11:12:14,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618761943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:14,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:14,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-16 11:12:14,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188268642] [2022-11-16 11:12:14,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:14,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:12:14,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:14,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:12:14,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:12:14,036 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:12:14,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 830 places, 1166 transitions, 22597 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:14,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:14,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:12:14,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:17,677 INFO L130 PetriNetUnfolder]: 793/2422 cut-off events. [2022-11-16 11:12:17,678 INFO L131 PetriNetUnfolder]: For 119783/119783 co-relation queries the response was YES. [2022-11-16 11:12:17,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26055 conditions, 2422 events. 793/2422 cut-off events. For 119783/119783 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 19327 event pairs, 46 based on Foata normal form. 1/2421 useless extension candidates. Maximal degree in co-relation 25753. Up to 1840 conditions per place. [2022-11-16 11:12:17,725 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1032 selfloop transitions, 110 changer transitions 21/1202 dead transitions. [2022-11-16 11:12:17,725 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 860 places, 1202 transitions, 25621 flow [2022-11-16 11:12:17,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-16 11:12:17,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-16 11:12:17,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1939 transitions. [2022-11-16 11:12:17,728 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5575043128234618 [2022-11-16 11:12:17,728 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1939 transitions. [2022-11-16 11:12:17,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1939 transitions. [2022-11-16 11:12:17,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:17,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1939 transitions. [2022-11-16 11:12:17,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.4054054054054) internal successors, (1939), 37 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:17,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:17,731 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:17,732 INFO L175 Difference]: Start difference. First operand has 830 places, 1166 transitions, 22597 flow. Second operand 37 states and 1939 transitions. [2022-11-16 11:12:17,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 860 places, 1202 transitions, 25621 flow [2022-11-16 11:12:19,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 839 places, 1202 transitions, 24887 flow, removed 307 selfloop flow, removed 21 redundant places. [2022-11-16 11:12:19,182 INFO L231 Difference]: Finished difference. Result has 850 places, 1166 transitions, 22210 flow [2022-11-16 11:12:19,183 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=21867, PETRI_DIFFERENCE_MINUEND_PLACES=803, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1056, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=22210, PETRI_PLACES=850, PETRI_TRANSITIONS=1166} [2022-11-16 11:12:19,183 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 762 predicate places. [2022-11-16 11:12:19,183 INFO L495 AbstractCegarLoop]: Abstraction has has 850 places, 1166 transitions, 22210 flow [2022-11-16 11:12:19,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:19,183 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:19,184 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:19,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2022-11-16 11:12:19,184 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:12:19,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:19,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1415515106, now seen corresponding path program 190 times [2022-11-16 11:12:19,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:19,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227495944] [2022-11-16 11:12:19,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:19,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:19,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:19,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:19,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227495944] [2022-11-16 11:12:19,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227495944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:19,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:19,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-16 11:12:19,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725350938] [2022-11-16 11:12:19,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:19,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:12:19,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:19,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:12:19,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:12:19,710 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:12:19,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 850 places, 1166 transitions, 22210 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:19,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:19,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:12:19,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:23,557 INFO L130 PetriNetUnfolder]: 785/2403 cut-off events. [2022-11-16 11:12:23,557 INFO L131 PetriNetUnfolder]: For 119360/119360 co-relation queries the response was YES. [2022-11-16 11:12:23,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25626 conditions, 2403 events. 785/2403 cut-off events. For 119360/119360 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 19132 event pairs, 47 based on Foata normal form. 1/2401 useless extension candidates. Maximal degree in co-relation 25314. Up to 1838 conditions per place. [2022-11-16 11:12:23,600 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1031 selfloop transitions, 79 changer transitions 40/1189 dead transitions. [2022-11-16 11:12:23,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 876 places, 1189 transitions, 24703 flow [2022-11-16 11:12:23,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 11:12:23,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-16 11:12:23,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1783 transitions. [2022-11-16 11:12:23,603 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5578848560700876 [2022-11-16 11:12:23,603 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1783 transitions. [2022-11-16 11:12:23,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1783 transitions. [2022-11-16 11:12:23,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:23,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1783 transitions. [2022-11-16 11:12:23,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.44117647058823) internal successors, (1783), 34 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:23,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:23,607 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:23,607 INFO L175 Difference]: Start difference. First operand has 850 places, 1166 transitions, 22210 flow. Second operand 34 states and 1783 transitions. [2022-11-16 11:12:23,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 876 places, 1189 transitions, 24703 flow [2022-11-16 11:12:25,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 842 places, 1189 transitions, 24397 flow, removed 53 selfloop flow, removed 34 redundant places. [2022-11-16 11:12:25,097 INFO L231 Difference]: Finished difference. Result has 846 places, 1135 transitions, 21279 flow [2022-11-16 11:12:25,097 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=21912, PETRI_DIFFERENCE_MINUEND_PLACES=809, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1087, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=21279, PETRI_PLACES=846, PETRI_TRANSITIONS=1135} [2022-11-16 11:12:25,098 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 758 predicate places. [2022-11-16 11:12:25,098 INFO L495 AbstractCegarLoop]: Abstraction has has 846 places, 1135 transitions, 21279 flow [2022-11-16 11:12:25,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:25,098 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:25,098 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:25,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2022-11-16 11:12:25,098 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:12:25,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:25,098 INFO L85 PathProgramCache]: Analyzing trace with hash -319262602, now seen corresponding path program 191 times [2022-11-16 11:12:25,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:25,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278318402] [2022-11-16 11:12:25,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:25,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:25,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:25,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:25,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278318402] [2022-11-16 11:12:25,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278318402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:25,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:25,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:12:25,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718553301] [2022-11-16 11:12:25,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:25,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:12:25,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:25,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:12:25,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:12:25,559 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:12:25,559 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 846 places, 1135 transitions, 21279 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:25,559 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:25,559 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:12:25,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:28,749 INFO L130 PetriNetUnfolder]: 793/2413 cut-off events. [2022-11-16 11:12:28,750 INFO L131 PetriNetUnfolder]: For 121800/121800 co-relation queries the response was YES. [2022-11-16 11:12:28,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25708 conditions, 2413 events. 793/2413 cut-off events. For 121800/121800 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 19267 event pairs, 49 based on Foata normal form. 1/2411 useless extension candidates. Maximal degree in co-relation 25400. Up to 1817 conditions per place. [2022-11-16 11:12:28,803 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 995 selfloop transitions, 125 changer transitions 22/1181 dead transitions. [2022-11-16 11:12:28,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 859 places, 1181 transitions, 24699 flow [2022-11-16 11:12:28,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-16 11:12:28,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-16 11:12:28,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1954 transitions. [2022-11-16 11:12:28,806 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5618171362852213 [2022-11-16 11:12:28,806 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1954 transitions. [2022-11-16 11:12:28,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1954 transitions. [2022-11-16 11:12:28,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:28,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1954 transitions. [2022-11-16 11:12:28,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.810810810810814) internal successors, (1954), 37 states have internal predecessors, (1954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:28,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:28,811 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:28,812 INFO L175 Difference]: Start difference. First operand has 846 places, 1135 transitions, 21279 flow. Second operand 37 states and 1954 transitions. [2022-11-16 11:12:28,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 859 places, 1181 transitions, 24699 flow [2022-11-16 11:12:30,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 821 places, 1181 transitions, 24265 flow, removed 84 selfloop flow, removed 38 redundant places. [2022-11-16 11:12:30,204 INFO L231 Difference]: Finished difference. Result has 832 places, 1145 transitions, 21504 flow [2022-11-16 11:12:30,204 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=20861, PETRI_DIFFERENCE_MINUEND_PLACES=785, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1011, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=21504, PETRI_PLACES=832, PETRI_TRANSITIONS=1145} [2022-11-16 11:12:30,204 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 744 predicate places. [2022-11-16 11:12:30,205 INFO L495 AbstractCegarLoop]: Abstraction has has 832 places, 1145 transitions, 21504 flow [2022-11-16 11:12:30,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:30,205 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:30,205 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:30,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2022-11-16 11:12:30,205 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:12:30,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:30,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1361768090, now seen corresponding path program 192 times [2022-11-16 11:12:30,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:30,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254637689] [2022-11-16 11:12:30,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:30,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:30,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:30,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:30,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:30,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254637689] [2022-11-16 11:12:30,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254637689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:30,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:30,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:12:30,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41574027] [2022-11-16 11:12:30,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:30,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:12:30,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:30,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:12:30,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:12:30,803 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:12:30,804 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 832 places, 1145 transitions, 21504 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:30,804 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:30,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:12:30,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:33,951 INFO L130 PetriNetUnfolder]: 787/2411 cut-off events. [2022-11-16 11:12:33,951 INFO L131 PetriNetUnfolder]: For 124172/124172 co-relation queries the response was YES. [2022-11-16 11:12:33,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25751 conditions, 2411 events. 787/2411 cut-off events. For 124172/124172 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 19285 event pairs, 48 based on Foata normal form. 1/2409 useless extension candidates. Maximal degree in co-relation 25445. Up to 1732 conditions per place. [2022-11-16 11:12:34,001 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 955 selfloop transitions, 179 changer transitions 28/1201 dead transitions. [2022-11-16 11:12:34,001 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 860 places, 1201 transitions, 25157 flow [2022-11-16 11:12:34,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 11:12:34,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 11:12:34,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1871 transitions. [2022-11-16 11:12:34,003 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.568693009118541 [2022-11-16 11:12:34,003 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1871 transitions. [2022-11-16 11:12:34,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1871 transitions. [2022-11-16 11:12:34,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:34,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1871 transitions. [2022-11-16 11:12:34,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.457142857142856) internal successors, (1871), 35 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:34,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:34,006 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:34,007 INFO L175 Difference]: Start difference. First operand has 832 places, 1145 transitions, 21504 flow. Second operand 35 states and 1871 transitions. [2022-11-16 11:12:34,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 860 places, 1201 transitions, 25157 flow [2022-11-16 11:12:35,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 829 places, 1201 transitions, 24752 flow, removed 116 selfloop flow, removed 31 redundant places. [2022-11-16 11:12:35,314 INFO L231 Difference]: Finished difference. Result has 836 places, 1146 transitions, 21794 flow [2022-11-16 11:12:35,314 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=21115, PETRI_DIFFERENCE_MINUEND_PLACES=795, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=970, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=21794, PETRI_PLACES=836, PETRI_TRANSITIONS=1146} [2022-11-16 11:12:35,314 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 748 predicate places. [2022-11-16 11:12:35,315 INFO L495 AbstractCegarLoop]: Abstraction has has 836 places, 1146 transitions, 21794 flow [2022-11-16 11:12:35,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:35,315 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:35,315 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:35,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2022-11-16 11:12:35,315 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:12:35,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:35,316 INFO L85 PathProgramCache]: Analyzing trace with hash -886615148, now seen corresponding path program 193 times [2022-11-16 11:12:35,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:35,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000069961] [2022-11-16 11:12:35,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:35,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:35,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:35,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:35,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:35,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000069961] [2022-11-16 11:12:35,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000069961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:35,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:35,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:12:35,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499905585] [2022-11-16 11:12:35,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:35,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:12:35,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:35,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:12:35,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:12:35,813 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:12:35,813 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 836 places, 1146 transitions, 21794 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:35,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:35,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:12:35,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:39,256 INFO L130 PetriNetUnfolder]: 785/2379 cut-off events. [2022-11-16 11:12:39,256 INFO L131 PetriNetUnfolder]: For 127641/127641 co-relation queries the response was YES. [2022-11-16 11:12:39,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25954 conditions, 2379 events. 785/2379 cut-off events. For 127641/127641 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 18855 event pairs, 48 based on Foata normal form. 1/2377 useless extension candidates. Maximal degree in co-relation 25647. Up to 1755 conditions per place. [2022-11-16 11:12:39,320 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 988 selfloop transitions, 160 changer transitions 18/1205 dead transitions. [2022-11-16 11:12:39,321 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 864 places, 1205 transitions, 25781 flow [2022-11-16 11:12:39,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 11:12:39,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-16 11:12:39,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1817 transitions. [2022-11-16 11:12:39,323 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.568523153942428 [2022-11-16 11:12:39,323 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1817 transitions. [2022-11-16 11:12:39,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1817 transitions. [2022-11-16 11:12:39,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:39,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1817 transitions. [2022-11-16 11:12:39,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.44117647058823) internal successors, (1817), 34 states have internal predecessors, (1817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:39,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:39,326 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:39,326 INFO L175 Difference]: Start difference. First operand has 836 places, 1146 transitions, 21794 flow. Second operand 34 states and 1817 transitions. [2022-11-16 11:12:39,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 864 places, 1205 transitions, 25781 flow [2022-11-16 11:12:41,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 836 places, 1205 transitions, 25030 flow, removed 288 selfloop flow, removed 28 redundant places. [2022-11-16 11:12:41,623 INFO L231 Difference]: Finished difference. Result has 843 places, 1160 transitions, 22200 flow [2022-11-16 11:12:41,623 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=21317, PETRI_DIFFERENCE_MINUEND_PLACES=803, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=993, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=22200, PETRI_PLACES=843, PETRI_TRANSITIONS=1160} [2022-11-16 11:12:41,624 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 755 predicate places. [2022-11-16 11:12:41,624 INFO L495 AbstractCegarLoop]: Abstraction has has 843 places, 1160 transitions, 22200 flow [2022-11-16 11:12:41,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:41,624 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:41,624 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:41,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2022-11-16 11:12:41,624 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:12:41,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:41,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1194990230, now seen corresponding path program 194 times [2022-11-16 11:12:41,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:41,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145533840] [2022-11-16 11:12:41,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:41,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:41,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:42,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:42,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:42,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145533840] [2022-11-16 11:12:42,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145533840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:42,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:42,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:12:42,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962659444] [2022-11-16 11:12:42,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:42,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:12:42,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:42,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:12:42,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:12:42,166 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:12:42,167 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 843 places, 1160 transitions, 22200 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:42,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:42,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:12:42,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:45,725 INFO L130 PetriNetUnfolder]: 784/2382 cut-off events. [2022-11-16 11:12:45,725 INFO L131 PetriNetUnfolder]: For 116847/116847 co-relation queries the response was YES. [2022-11-16 11:12:45,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25553 conditions, 2382 events. 784/2382 cut-off events. For 116847/116847 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 18876 event pairs, 50 based on Foata normal form. 1/2380 useless extension candidates. Maximal degree in co-relation 25243. Up to 1767 conditions per place. [2022-11-16 11:12:45,792 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1003 selfloop transitions, 140 changer transitions 21/1203 dead transitions. [2022-11-16 11:12:45,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 873 places, 1203 transitions, 25285 flow [2022-11-16 11:12:45,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-16 11:12:45,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-16 11:12:45,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1912 transitions. [2022-11-16 11:12:45,795 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5650118203309693 [2022-11-16 11:12:45,795 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1912 transitions. [2022-11-16 11:12:45,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1912 transitions. [2022-11-16 11:12:45,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:45,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1912 transitions. [2022-11-16 11:12:45,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 53.111111111111114) internal successors, (1912), 36 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:45,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:45,798 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:45,799 INFO L175 Difference]: Start difference. First operand has 843 places, 1160 transitions, 22200 flow. Second operand 36 states and 1912 transitions. [2022-11-16 11:12:45,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 873 places, 1203 transitions, 25285 flow [2022-11-16 11:12:48,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 847 places, 1203 transitions, 24752 flow, removed 170 selfloop flow, removed 26 redundant places. [2022-11-16 11:12:48,238 INFO L231 Difference]: Finished difference. Result has 858 places, 1160 transitions, 22019 flow [2022-11-16 11:12:48,238 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=21689, PETRI_DIFFERENCE_MINUEND_PLACES=812, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1021, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=22019, PETRI_PLACES=858, PETRI_TRANSITIONS=1160} [2022-11-16 11:12:48,239 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 770 predicate places. [2022-11-16 11:12:48,239 INFO L495 AbstractCegarLoop]: Abstraction has has 858 places, 1160 transitions, 22019 flow [2022-11-16 11:12:48,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:48,239 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:48,239 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:48,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2022-11-16 11:12:48,239 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:12:48,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:48,240 INFO L85 PathProgramCache]: Analyzing trace with hash -433775950, now seen corresponding path program 195 times [2022-11-16 11:12:48,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:48,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245397320] [2022-11-16 11:12:48,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:48,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:48,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:48,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:48,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245397320] [2022-11-16 11:12:48,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245397320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:48,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:48,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-16 11:12:48,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781081281] [2022-11-16 11:12:48,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:48,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:12:48,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:48,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:12:48,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:12:48,804 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:12:48,805 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 858 places, 1160 transitions, 22019 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:48,805 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:48,805 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:12:48,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:52,147 INFO L130 PetriNetUnfolder]: 789/2395 cut-off events. [2022-11-16 11:12:52,147 INFO L131 PetriNetUnfolder]: For 117921/117921 co-relation queries the response was YES. [2022-11-16 11:12:52,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25787 conditions, 2395 events. 789/2395 cut-off events. For 117921/117921 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 19102 event pairs, 47 based on Foata normal form. 1/2393 useless extension candidates. Maximal degree in co-relation 25470. Up to 1824 conditions per place. [2022-11-16 11:12:52,223 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1030 selfloop transitions, 120 changer transitions 20/1209 dead transitions. [2022-11-16 11:12:52,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 882 places, 1209 transitions, 25571 flow [2022-11-16 11:12:52,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 11:12:52,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-16 11:12:52,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1817 transitions. [2022-11-16 11:12:52,225 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.568523153942428 [2022-11-16 11:12:52,225 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1817 transitions. [2022-11-16 11:12:52,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1817 transitions. [2022-11-16 11:12:52,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:52,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1817 transitions. [2022-11-16 11:12:52,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.44117647058823) internal successors, (1817), 34 states have internal predecessors, (1817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:52,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:52,229 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:52,229 INFO L175 Difference]: Start difference. First operand has 858 places, 1160 transitions, 22019 flow. Second operand 34 states and 1817 transitions. [2022-11-16 11:12:52,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 882 places, 1209 transitions, 25571 flow [2022-11-16 11:12:54,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 848 places, 1209 transitions, 25214 flow, removed 23 selfloop flow, removed 34 redundant places. [2022-11-16 11:12:54,172 INFO L231 Difference]: Finished difference. Result has 855 places, 1169 transitions, 22329 flow [2022-11-16 11:12:54,173 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=21680, PETRI_DIFFERENCE_MINUEND_PLACES=815, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1046, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=22329, PETRI_PLACES=855, PETRI_TRANSITIONS=1169} [2022-11-16 11:12:54,173 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 767 predicate places. [2022-11-16 11:12:54,173 INFO L495 AbstractCegarLoop]: Abstraction has has 855 places, 1169 transitions, 22329 flow [2022-11-16 11:12:54,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:54,173 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:54,173 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:54,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2022-11-16 11:12:54,173 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:12:54,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:54,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1708592440, now seen corresponding path program 196 times [2022-11-16 11:12:54,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:54,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957624427] [2022-11-16 11:12:54,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:54,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:54,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:54,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:54,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957624427] [2022-11-16 11:12:54,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957624427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:54,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:54,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:12:54,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700991191] [2022-11-16 11:12:54,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:54,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:12:54,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:54,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:12:54,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:12:54,623 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:12:54,623 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 855 places, 1169 transitions, 22329 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:54,623 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:54,623 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:12:54,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:58,485 INFO L130 PetriNetUnfolder]: 794/2416 cut-off events. [2022-11-16 11:12:58,486 INFO L131 PetriNetUnfolder]: For 124711/124711 co-relation queries the response was YES. [2022-11-16 11:12:58,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26144 conditions, 2416 events. 794/2416 cut-off events. For 124711/124711 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 19301 event pairs, 44 based on Foata normal form. 1/2414 useless extension candidates. Maximal degree in co-relation 25830. Up to 1829 conditions per place. [2022-11-16 11:12:58,533 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1029 selfloop transitions, 133 changer transitions 22/1223 dead transitions. [2022-11-16 11:12:58,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 889 places, 1223 transitions, 26115 flow [2022-11-16 11:12:58,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-16 11:12:58,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-16 11:12:58,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2121 transitions. [2022-11-16 11:12:58,536 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5640957446808511 [2022-11-16 11:12:58,536 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2121 transitions. [2022-11-16 11:12:58,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2121 transitions. [2022-11-16 11:12:58,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:58,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2121 transitions. [2022-11-16 11:12:58,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 53.025) internal successors, (2121), 40 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:58,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:58,541 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:58,541 INFO L175 Difference]: Start difference. First operand has 855 places, 1169 transitions, 22329 flow. Second operand 40 states and 2121 transitions. [2022-11-16 11:12:58,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 889 places, 1223 transitions, 26115 flow [2022-11-16 11:13:00,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 862 places, 1223 transitions, 25647 flow, removed 145 selfloop flow, removed 27 redundant places. [2022-11-16 11:13:00,280 INFO L231 Difference]: Finished difference. Result has 874 places, 1182 transitions, 22713 flow [2022-11-16 11:13:00,281 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=21891, PETRI_DIFFERENCE_MINUEND_PLACES=823, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1042, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=22713, PETRI_PLACES=874, PETRI_TRANSITIONS=1182} [2022-11-16 11:13:00,281 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 786 predicate places. [2022-11-16 11:13:00,281 INFO L495 AbstractCegarLoop]: Abstraction has has 874 places, 1182 transitions, 22713 flow [2022-11-16 11:13:00,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:00,281 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:13:00,281 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:00,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2022-11-16 11:13:00,282 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:13:00,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:00,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1346733674, now seen corresponding path program 197 times [2022-11-16 11:13:00,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:00,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803952151] [2022-11-16 11:13:00,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:00,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:00,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:00,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:00,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:00,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803952151] [2022-11-16 11:13:00,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803952151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:00,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:00,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:13:00,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3032685] [2022-11-16 11:13:00,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:00,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:13:00,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:00,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:13:00,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:13:00,827 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:13:00,827 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 874 places, 1182 transitions, 22713 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:00,827 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:13:00,827 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:13:00,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:13:04,602 INFO L130 PetriNetUnfolder]: 789/2402 cut-off events. [2022-11-16 11:13:04,602 INFO L131 PetriNetUnfolder]: For 123716/123716 co-relation queries the response was YES. [2022-11-16 11:13:04,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25988 conditions, 2402 events. 789/2402 cut-off events. For 123716/123716 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 19149 event pairs, 46 based on Foata normal form. 1/2400 useless extension candidates. Maximal degree in co-relation 25667. Up to 1827 conditions per place. [2022-11-16 11:13:04,657 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1032 selfloop transitions, 118 changer transitions 26/1215 dead transitions. [2022-11-16 11:13:04,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 904 places, 1215 transitions, 25600 flow [2022-11-16 11:13:04,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-16 11:13:04,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-16 11:13:04,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1963 transitions. [2022-11-16 11:13:04,660 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5644048303622772 [2022-11-16 11:13:04,660 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1963 transitions. [2022-11-16 11:13:04,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1963 transitions. [2022-11-16 11:13:04,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:13:04,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1963 transitions. [2022-11-16 11:13:04,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 53.054054054054056) internal successors, (1963), 37 states have internal predecessors, (1963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:04,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:04,664 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:04,664 INFO L175 Difference]: Start difference. First operand has 874 places, 1182 transitions, 22713 flow. Second operand 37 states and 1963 transitions. [2022-11-16 11:13:04,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 904 places, 1215 transitions, 25600 flow [2022-11-16 11:13:07,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 877 places, 1215 transitions, 24967 flow, removed 234 selfloop flow, removed 27 redundant places. [2022-11-16 11:13:07,155 INFO L231 Difference]: Finished difference. Result has 884 places, 1174 transitions, 22327 flow [2022-11-16 11:13:07,156 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=22146, PETRI_DIFFERENCE_MINUEND_PLACES=841, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1064, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=22327, PETRI_PLACES=884, PETRI_TRANSITIONS=1174} [2022-11-16 11:13:07,156 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 796 predicate places. [2022-11-16 11:13:07,156 INFO L495 AbstractCegarLoop]: Abstraction has has 884 places, 1174 transitions, 22327 flow [2022-11-16 11:13:07,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:07,156 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:13:07,156 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:07,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2022-11-16 11:13:07,157 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:13:07,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:07,157 INFO L85 PathProgramCache]: Analyzing trace with hash 537913260, now seen corresponding path program 198 times [2022-11-16 11:13:07,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:07,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251364192] [2022-11-16 11:13:07,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:07,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:07,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:07,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:07,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251364192] [2022-11-16 11:13:07,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251364192] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:07,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:07,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-16 11:13:07,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179715120] [2022-11-16 11:13:07,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:07,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:13:07,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:07,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:13:07,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:13:07,648 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:13:07,648 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 884 places, 1174 transitions, 22327 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:07,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:13:07,648 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:13:07,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:13:10,757 INFO L130 PetriNetUnfolder]: 800/2439 cut-off events. [2022-11-16 11:13:10,757 INFO L131 PetriNetUnfolder]: For 122422/122422 co-relation queries the response was YES. [2022-11-16 11:13:10,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26271 conditions, 2439 events. 800/2439 cut-off events. For 122422/122422 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 19548 event pairs, 44 based on Foata normal form. 1/2437 useless extension candidates. Maximal degree in co-relation 25949. Up to 1837 conditions per place. [2022-11-16 11:13:10,823 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1041 selfloop transitions, 130 changer transitions 29/1239 dead transitions. [2022-11-16 11:13:10,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 905 places, 1239 transitions, 26078 flow [2022-11-16 11:13:10,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 11:13:10,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-16 11:13:10,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1767 transitions. [2022-11-16 11:13:10,825 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5696324951644101 [2022-11-16 11:13:10,825 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1767 transitions. [2022-11-16 11:13:10,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1767 transitions. [2022-11-16 11:13:10,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:13:10,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1767 transitions. [2022-11-16 11:13:10,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.54545454545455) internal successors, (1767), 33 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:10,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:10,829 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:10,829 INFO L175 Difference]: Start difference. First operand has 884 places, 1174 transitions, 22327 flow. Second operand 33 states and 1767 transitions. [2022-11-16 11:13:10,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 905 places, 1239 transitions, 26078 flow [2022-11-16 11:13:13,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 866 places, 1239 transitions, 25733 flow, removed 27 selfloop flow, removed 39 redundant places. [2022-11-16 11:13:13,180 INFO L231 Difference]: Finished difference. Result has 876 places, 1191 transitions, 22821 flow [2022-11-16 11:13:13,180 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=22014, PETRI_DIFFERENCE_MINUEND_PLACES=834, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1047, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=22821, PETRI_PLACES=876, PETRI_TRANSITIONS=1191} [2022-11-16 11:13:13,180 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 788 predicate places. [2022-11-16 11:13:13,180 INFO L495 AbstractCegarLoop]: Abstraction has has 876 places, 1191 transitions, 22821 flow [2022-11-16 11:13:13,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:13,181 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:13:13,181 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:13,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2022-11-16 11:13:13,181 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:13:13,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:13,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1249135654, now seen corresponding path program 199 times [2022-11-16 11:13:13,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:13,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145398923] [2022-11-16 11:13:13,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:13,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:13,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:13,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:13,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145398923] [2022-11-16 11:13:13,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145398923] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:13,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:13,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:13:13,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380948780] [2022-11-16 11:13:13,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:13,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:13:13,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:13,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:13:13,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:13:13,647 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:13:13,648 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 876 places, 1191 transitions, 22821 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:13,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:13:13,648 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:13:13,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:13:17,473 INFO L130 PetriNetUnfolder]: 794/2423 cut-off events. [2022-11-16 11:13:17,473 INFO L131 PetriNetUnfolder]: For 122162/122162 co-relation queries the response was YES. [2022-11-16 11:13:17,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26198 conditions, 2423 events. 794/2423 cut-off events. For 122162/122162 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 19391 event pairs, 40 based on Foata normal form. 1/2421 useless extension candidates. Maximal degree in co-relation 25876. Up to 1756 conditions per place. [2022-11-16 11:13:17,536 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 989 selfloop transitions, 174 changer transitions 33/1235 dead transitions. [2022-11-16 11:13:17,536 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 905 places, 1235 transitions, 26109 flow [2022-11-16 11:13:17,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-16 11:13:17,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-16 11:13:17,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2020 transitions. [2022-11-16 11:13:17,538 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5655095184770437 [2022-11-16 11:13:17,538 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2020 transitions. [2022-11-16 11:13:17,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2020 transitions. [2022-11-16 11:13:17,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:13:17,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2020 transitions. [2022-11-16 11:13:17,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 53.1578947368421) internal successors, (2020), 38 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:17,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:17,543 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:17,543 INFO L175 Difference]: Start difference. First operand has 876 places, 1191 transitions, 22821 flow. Second operand 38 states and 2020 transitions. [2022-11-16 11:13:17,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 905 places, 1235 transitions, 26109 flow [2022-11-16 11:13:20,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 881 places, 1235 transitions, 25718 flow, removed 103 selfloop flow, removed 24 redundant places. [2022-11-16 11:13:20,080 INFO L231 Difference]: Finished difference. Result has 891 places, 1186 transitions, 22871 flow [2022-11-16 11:13:20,081 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=22456, PETRI_DIFFERENCE_MINUEND_PLACES=844, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1021, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=22871, PETRI_PLACES=891, PETRI_TRANSITIONS=1186} [2022-11-16 11:13:20,081 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 803 predicate places. [2022-11-16 11:13:20,081 INFO L495 AbstractCegarLoop]: Abstraction has has 891 places, 1186 transitions, 22871 flow [2022-11-16 11:13:20,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:20,082 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:13:20,082 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:20,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2022-11-16 11:13:20,082 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:13:20,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:20,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1049249256, now seen corresponding path program 200 times [2022-11-16 11:13:20,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:20,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400773803] [2022-11-16 11:13:20,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:20,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:20,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:20,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:20,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:20,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400773803] [2022-11-16 11:13:20,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400773803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:20,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:20,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:13:20,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912744382] [2022-11-16 11:13:20,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:20,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:13:20,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:20,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:13:20,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:13:20,597 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:13:20,597 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 891 places, 1186 transitions, 22871 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:20,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:13:20,598 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:13:20,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:13:24,095 INFO L130 PetriNetUnfolder]: 780/2385 cut-off events. [2022-11-16 11:13:24,095 INFO L131 PetriNetUnfolder]: For 117469/117469 co-relation queries the response was YES. [2022-11-16 11:13:24,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25781 conditions, 2385 events. 780/2385 cut-off events. For 117469/117469 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 18980 event pairs, 43 based on Foata normal form. 1/2383 useless extension candidates. Maximal degree in co-relation 25454. Up to 1828 conditions per place. [2022-11-16 11:13:24,149 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1048 selfloop transitions, 115 changer transitions 18/1220 dead transitions. [2022-11-16 11:13:24,149 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 913 places, 1220 transitions, 25651 flow [2022-11-16 11:13:24,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 11:13:24,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-16 11:13:24,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1703 transitions. [2022-11-16 11:13:24,151 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.566156914893617 [2022-11-16 11:13:24,151 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1703 transitions. [2022-11-16 11:13:24,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1703 transitions. [2022-11-16 11:13:24,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:13:24,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1703 transitions. [2022-11-16 11:13:24,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.21875) internal successors, (1703), 32 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:24,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:24,154 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:24,154 INFO L175 Difference]: Start difference. First operand has 891 places, 1186 transitions, 22871 flow. Second operand 32 states and 1703 transitions. [2022-11-16 11:13:24,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 913 places, 1220 transitions, 25651 flow [2022-11-16 11:13:25,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 878 places, 1220 transitions, 25104 flow, removed 70 selfloop flow, removed 35 redundant places. [2022-11-16 11:13:26,005 INFO L231 Difference]: Finished difference. Result has 886 places, 1185 transitions, 22621 flow [2022-11-16 11:13:26,006 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=22344, PETRI_DIFFERENCE_MINUEND_PLACES=847, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1071, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=22621, PETRI_PLACES=886, PETRI_TRANSITIONS=1185} [2022-11-16 11:13:26,006 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 798 predicate places. [2022-11-16 11:13:26,006 INFO L495 AbstractCegarLoop]: Abstraction has has 886 places, 1185 transitions, 22621 flow [2022-11-16 11:13:26,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:26,007 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:13:26,007 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:26,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2022-11-16 11:13:26,007 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:13:26,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:26,007 INFO L85 PathProgramCache]: Analyzing trace with hash 239049674, now seen corresponding path program 201 times [2022-11-16 11:13:26,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:26,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730179957] [2022-11-16 11:13:26,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:26,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:26,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:26,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:26,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:26,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730179957] [2022-11-16 11:13:26,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730179957] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:26,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:26,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:13:26,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129461074] [2022-11-16 11:13:26,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:26,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:13:26,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:26,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:13:26,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:13:26,491 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:13:26,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 886 places, 1185 transitions, 22621 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:26,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:13:26,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:13:26,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:13:29,812 INFO L130 PetriNetUnfolder]: 803/2504 cut-off events. [2022-11-16 11:13:29,812 INFO L131 PetriNetUnfolder]: For 117687/117687 co-relation queries the response was YES. [2022-11-16 11:13:29,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26489 conditions, 2504 events. 803/2504 cut-off events. For 117687/117687 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 20353 event pairs, 46 based on Foata normal form. 1/2502 useless extension candidates. Maximal degree in co-relation 26164. Up to 1692 conditions per place. [2022-11-16 11:13:29,876 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 960 selfloop transitions, 226 changer transitions 52/1277 dead transitions. [2022-11-16 11:13:29,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 914 places, 1277 transitions, 27240 flow [2022-11-16 11:13:29,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 11:13:29,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 11:13:29,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1856 transitions. [2022-11-16 11:13:29,879 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5641337386018237 [2022-11-16 11:13:29,880 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1856 transitions. [2022-11-16 11:13:29,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1856 transitions. [2022-11-16 11:13:29,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:13:29,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1856 transitions. [2022-11-16 11:13:29,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.02857142857143) internal successors, (1856), 35 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:29,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:29,887 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:29,887 INFO L175 Difference]: Start difference. First operand has 886 places, 1185 transitions, 22621 flow. Second operand 35 states and 1856 transitions. [2022-11-16 11:13:29,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 914 places, 1277 transitions, 27240 flow [2022-11-16 11:13:31,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 882 places, 1277 transitions, 26846 flow, removed 48 selfloop flow, removed 32 redundant places. [2022-11-16 11:13:31,883 INFO L231 Difference]: Finished difference. Result has 891 places, 1200 transitions, 23604 flow [2022-11-16 11:13:31,884 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=22251, PETRI_DIFFERENCE_MINUEND_PLACES=848, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=966, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=23604, PETRI_PLACES=891, PETRI_TRANSITIONS=1200} [2022-11-16 11:13:31,884 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 803 predicate places. [2022-11-16 11:13:31,884 INFO L495 AbstractCegarLoop]: Abstraction has has 891 places, 1200 transitions, 23604 flow [2022-11-16 11:13:31,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:31,884 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:13:31,884 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:31,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2022-11-16 11:13:31,885 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:13:31,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:31,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1544945088, now seen corresponding path program 202 times [2022-11-16 11:13:31,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:31,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420014079] [2022-11-16 11:13:31,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:31,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:31,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:32,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:32,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:32,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420014079] [2022-11-16 11:13:32,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420014079] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:32,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:32,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-16 11:13:32,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122983442] [2022-11-16 11:13:32,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:32,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:13:32,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:32,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:13:32,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:13:32,432 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:13:32,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 891 places, 1200 transitions, 23604 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:32,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:13:32,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:13:32,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:13:37,014 INFO L130 PetriNetUnfolder]: 849/2666 cut-off events. [2022-11-16 11:13:37,014 INFO L131 PetriNetUnfolder]: For 139921/139921 co-relation queries the response was YES. [2022-11-16 11:13:37,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28875 conditions, 2666 events. 849/2666 cut-off events. For 139921/139921 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 22204 event pairs, 41 based on Foata normal form. 1/2664 useless extension candidates. Maximal degree in co-relation 28549. Up to 1756 conditions per place. [2022-11-16 11:13:37,065 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1015 selfloop transitions, 286 changer transitions 33/1373 dead transitions. [2022-11-16 11:13:37,065 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 934 places, 1373 transitions, 30574 flow [2022-11-16 11:13:37,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-16 11:13:37,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-11-16 11:13:37,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 2631 transitions. [2022-11-16 11:13:37,068 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5597872340425532 [2022-11-16 11:13:37,068 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 2631 transitions. [2022-11-16 11:13:37,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 2631 transitions. [2022-11-16 11:13:37,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:13:37,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 2631 transitions. [2022-11-16 11:13:37,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 52.62) internal successors, (2631), 50 states have internal predecessors, (2631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:37,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 94.0) internal successors, (4794), 51 states have internal predecessors, (4794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:37,073 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 94.0) internal successors, (4794), 51 states have internal predecessors, (4794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:37,073 INFO L175 Difference]: Start difference. First operand has 891 places, 1200 transitions, 23604 flow. Second operand 50 states and 2631 transitions. [2022-11-16 11:13:37,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 934 places, 1373 transitions, 30574 flow [2022-11-16 11:13:39,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 909 places, 1373 transitions, 29738 flow, removed 291 selfloop flow, removed 25 redundant places. [2022-11-16 11:13:39,432 INFO L231 Difference]: Finished difference. Result has 921 places, 1296 transitions, 26137 flow [2022-11-16 11:13:39,432 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=22845, PETRI_DIFFERENCE_MINUEND_PLACES=860, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=925, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=26137, PETRI_PLACES=921, PETRI_TRANSITIONS=1296} [2022-11-16 11:13:39,432 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 833 predicate places. [2022-11-16 11:13:39,433 INFO L495 AbstractCegarLoop]: Abstraction has has 921 places, 1296 transitions, 26137 flow [2022-11-16 11:13:39,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:39,433 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:13:39,433 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:39,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2022-11-16 11:13:39,433 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:13:39,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:39,433 INFO L85 PathProgramCache]: Analyzing trace with hash 649497290, now seen corresponding path program 203 times [2022-11-16 11:13:39,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:39,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926810378] [2022-11-16 11:13:39,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:39,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:39,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:39,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:39,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926810378] [2022-11-16 11:13:39,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926810378] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:39,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:39,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:13:39,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327517140] [2022-11-16 11:13:39,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:39,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:13:39,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:39,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:13:39,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:13:39,891 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:13:39,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 921 places, 1296 transitions, 26137 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:39,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:13:39,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:13:39,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:13:44,119 INFO L130 PetriNetUnfolder]: 831/2654 cut-off events. [2022-11-16 11:13:44,120 INFO L131 PetriNetUnfolder]: For 143593/143593 co-relation queries the response was YES. [2022-11-16 11:13:44,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29102 conditions, 2654 events. 831/2654 cut-off events. For 143593/143593 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 22242 event pairs, 45 based on Foata normal form. 1/2651 useless extension candidates. Maximal degree in co-relation 28768. Up to 1837 conditions per place. [2022-11-16 11:13:44,171 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1072 selfloop transitions, 222 changer transitions 29/1362 dead transitions. [2022-11-16 11:13:44,171 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 946 places, 1362 transitions, 30576 flow [2022-11-16 11:13:44,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 11:13:44,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-16 11:13:44,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1704 transitions. [2022-11-16 11:13:44,173 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5664893617021277 [2022-11-16 11:13:44,173 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1704 transitions. [2022-11-16 11:13:44,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1704 transitions. [2022-11-16 11:13:44,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:13:44,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1704 transitions. [2022-11-16 11:13:44,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.25) internal successors, (1704), 32 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:44,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:44,177 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:44,177 INFO L175 Difference]: Start difference. First operand has 921 places, 1296 transitions, 26137 flow. Second operand 32 states and 1704 transitions. [2022-11-16 11:13:44,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 946 places, 1362 transitions, 30576 flow [2022-11-16 11:13:47,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 913 places, 1362 transitions, 29560 flow, removed 385 selfloop flow, removed 33 redundant places. [2022-11-16 11:13:47,521 INFO L231 Difference]: Finished difference. Result has 920 places, 1310 transitions, 26299 flow [2022-11-16 11:13:47,521 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=25187, PETRI_DIFFERENCE_MINUEND_PLACES=882, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1082, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=26299, PETRI_PLACES=920, PETRI_TRANSITIONS=1310} [2022-11-16 11:13:47,522 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 832 predicate places. [2022-11-16 11:13:47,522 INFO L495 AbstractCegarLoop]: Abstraction has has 920 places, 1310 transitions, 26299 flow [2022-11-16 11:13:47,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:47,522 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:13:47,522 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:47,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2022-11-16 11:13:47,523 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:13:47,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:47,523 INFO L85 PathProgramCache]: Analyzing trace with hash -799570080, now seen corresponding path program 204 times [2022-11-16 11:13:47,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:47,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120717145] [2022-11-16 11:13:47,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:47,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:47,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:48,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:48,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:48,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120717145] [2022-11-16 11:13:48,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120717145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:48,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:48,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:13:48,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305364827] [2022-11-16 11:13:48,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:48,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:13:48,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:48,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:13:48,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:13:48,098 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:13:48,099 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 920 places, 1310 transitions, 26299 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:48,099 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:13:48,099 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:13:48,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:13:52,810 INFO L130 PetriNetUnfolder]: 831/2645 cut-off events. [2022-11-16 11:13:52,810 INFO L131 PetriNetUnfolder]: For 145665/145665 co-relation queries the response was YES. [2022-11-16 11:13:52,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29041 conditions, 2645 events. 831/2645 cut-off events. For 145665/145665 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 22133 event pairs, 44 based on Foata normal form. 1/2642 useless extension candidates. Maximal degree in co-relation 28701. Up to 1817 conditions per place. [2022-11-16 11:13:52,889 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1045 selfloop transitions, 245 changer transitions 30/1359 dead transitions. [2022-11-16 11:13:52,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 947 places, 1359 transitions, 30238 flow [2022-11-16 11:13:52,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 11:13:52,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-16 11:13:52,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1756 transitions. [2022-11-16 11:13:52,891 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.56608639587363 [2022-11-16 11:13:52,892 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1756 transitions. [2022-11-16 11:13:52,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1756 transitions. [2022-11-16 11:13:52,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:13:52,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1756 transitions. [2022-11-16 11:13:52,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.21212121212121) internal successors, (1756), 33 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:52,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:52,895 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:52,895 INFO L175 Difference]: Start difference. First operand has 920 places, 1310 transitions, 26299 flow. Second operand 33 states and 1756 transitions. [2022-11-16 11:13:52,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 947 places, 1359 transitions, 30238 flow [2022-11-16 11:13:56,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 920 places, 1359 transitions, 29324 flow, removed 288 selfloop flow, removed 27 redundant places. [2022-11-16 11:13:56,100 INFO L231 Difference]: Finished difference. Result has 927 places, 1306 transitions, 26080 flow [2022-11-16 11:13:56,101 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=25503, PETRI_DIFFERENCE_MINUEND_PLACES=888, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1066, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=26080, PETRI_PLACES=927, PETRI_TRANSITIONS=1306} [2022-11-16 11:13:56,101 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 839 predicate places. [2022-11-16 11:13:56,101 INFO L495 AbstractCegarLoop]: Abstraction has has 927 places, 1306 transitions, 26080 flow [2022-11-16 11:13:56,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:56,101 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:13:56,102 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:56,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2022-11-16 11:13:56,102 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:13:56,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:56,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1620891696, now seen corresponding path program 205 times [2022-11-16 11:13:56,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:56,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464266563] [2022-11-16 11:13:56,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:56,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:56,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:56,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:56,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:56,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464266563] [2022-11-16 11:13:56,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464266563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:56,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:56,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:13:56,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520195071] [2022-11-16 11:13:56,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:56,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:13:56,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:56,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:13:56,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:13:56,669 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:13:56,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 927 places, 1306 transitions, 26080 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:56,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:13:56,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:13:56,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:14:00,893 INFO L130 PetriNetUnfolder]: 821/2617 cut-off events. [2022-11-16 11:14:00,893 INFO L131 PetriNetUnfolder]: For 130487/130487 co-relation queries the response was YES. [2022-11-16 11:14:00,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28319 conditions, 2617 events. 821/2617 cut-off events. For 130487/130487 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 21864 event pairs, 45 based on Foata normal form. 1/2614 useless extension candidates. Maximal degree in co-relation 27977. Up to 1894 conditions per place. [2022-11-16 11:14:00,966 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1108 selfloop transitions, 174 changer transitions 25/1346 dead transitions. [2022-11-16 11:14:00,966 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 956 places, 1346 transitions, 29710 flow [2022-11-16 11:14:00,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 11:14:00,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 11:14:00,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1851 transitions. [2022-11-16 11:14:00,969 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5626139817629179 [2022-11-16 11:14:00,969 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1851 transitions. [2022-11-16 11:14:00,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1851 transitions. [2022-11-16 11:14:00,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:14:00,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1851 transitions. [2022-11-16 11:14:00,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.885714285714286) internal successors, (1851), 35 states have internal predecessors, (1851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:00,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:00,974 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:00,974 INFO L175 Difference]: Start difference. First operand has 927 places, 1306 transitions, 26080 flow. Second operand 35 states and 1851 transitions. [2022-11-16 11:14:00,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 956 places, 1346 transitions, 29710 flow [2022-11-16 11:14:04,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 927 places, 1346 transitions, 29199 flow, removed 87 selfloop flow, removed 29 redundant places. [2022-11-16 11:14:04,086 INFO L231 Difference]: Finished difference. Result has 934 places, 1300 transitions, 25969 flow [2022-11-16 11:14:04,087 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=25587, PETRI_DIFFERENCE_MINUEND_PLACES=893, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=25969, PETRI_PLACES=934, PETRI_TRANSITIONS=1300} [2022-11-16 11:14:04,087 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 846 predicate places. [2022-11-16 11:14:04,087 INFO L495 AbstractCegarLoop]: Abstraction has has 934 places, 1300 transitions, 25969 flow [2022-11-16 11:14:04,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:04,088 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:14:04,088 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:14:04,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2022-11-16 11:14:04,088 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:14:04,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:14:04,088 INFO L85 PathProgramCache]: Analyzing trace with hash 416315876, now seen corresponding path program 206 times [2022-11-16 11:14:04,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:14:04,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039488690] [2022-11-16 11:14:04,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:04,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:14:04,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:04,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:04,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:14:04,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039488690] [2022-11-16 11:14:04,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039488690] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:14:04,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:14:04,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:14:04,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31667375] [2022-11-16 11:14:04,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:14:04,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:14:04,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:14:04,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:14:04,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:14:04,652 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:14:04,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 934 places, 1300 transitions, 25969 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:04,652 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:14:04,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:14:04,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:14:09,327 INFO L130 PetriNetUnfolder]: 813/2605 cut-off events. [2022-11-16 11:14:09,327 INFO L131 PetriNetUnfolder]: For 128117/128117 co-relation queries the response was YES. [2022-11-16 11:14:09,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28031 conditions, 2605 events. 813/2605 cut-off events. For 128117/128117 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 21807 event pairs, 41 based on Foata normal form. 1/2603 useless extension candidates. Maximal degree in co-relation 27689. Up to 1905 conditions per place. [2022-11-16 11:14:09,411 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1124 selfloop transitions, 157 changer transitions 20/1340 dead transitions. [2022-11-16 11:14:09,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 962 places, 1340 transitions, 29318 flow [2022-11-16 11:14:09,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-16 11:14:09,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-16 11:14:09,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1945 transitions. [2022-11-16 11:14:09,414 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5592294422081656 [2022-11-16 11:14:09,414 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1945 transitions. [2022-11-16 11:14:09,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1945 transitions. [2022-11-16 11:14:09,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:14:09,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1945 transitions. [2022-11-16 11:14:09,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.567567567567565) internal successors, (1945), 37 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:09,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:09,420 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:09,420 INFO L175 Difference]: Start difference. First operand has 934 places, 1300 transitions, 25969 flow. Second operand 37 states and 1945 transitions. [2022-11-16 11:14:09,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 962 places, 1340 transitions, 29318 flow [2022-11-16 11:14:12,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 928 places, 1340 transitions, 28785 flow, removed 85 selfloop flow, removed 34 redundant places. [2022-11-16 11:14:12,555 INFO L231 Difference]: Finished difference. Result has 935 places, 1301 transitions, 25900 flow [2022-11-16 11:14:12,555 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=25466, PETRI_DIFFERENCE_MINUEND_PLACES=892, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=25900, PETRI_PLACES=935, PETRI_TRANSITIONS=1301} [2022-11-16 11:14:12,555 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 847 predicate places. [2022-11-16 11:14:12,556 INFO L495 AbstractCegarLoop]: Abstraction has has 935 places, 1301 transitions, 25900 flow [2022-11-16 11:14:12,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:12,556 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:14:12,556 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:14:12,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2022-11-16 11:14:12,556 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:14:12,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:14:12,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1214989986, now seen corresponding path program 207 times [2022-11-16 11:14:12,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:14:12,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477504100] [2022-11-16 11:14:12,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:12,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:14:12,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:13,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:13,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:14:13,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477504100] [2022-11-16 11:14:13,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477504100] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:14:13,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:14:13,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:14:13,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741534350] [2022-11-16 11:14:13,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:14:13,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:14:13,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:14:13,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:14:13,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:14:13,135 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:14:13,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 935 places, 1301 transitions, 25900 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:13,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:14:13,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:14:13,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:14:17,599 INFO L130 PetriNetUnfolder]: 807/2594 cut-off events. [2022-11-16 11:14:17,599 INFO L131 PetriNetUnfolder]: For 125425/125425 co-relation queries the response was YES. [2022-11-16 11:14:17,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27822 conditions, 2594 events. 807/2594 cut-off events. For 125425/125425 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 21772 event pairs, 38 based on Foata normal form. 1/2593 useless extension candidates. Maximal degree in co-relation 27480. Up to 1934 conditions per place. [2022-11-16 11:14:17,667 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1133 selfloop transitions, 140 changer transitions 22/1334 dead transitions. [2022-11-16 11:14:17,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 963 places, 1334 transitions, 29092 flow [2022-11-16 11:14:17,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-16 11:14:17,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-16 11:14:17,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1910 transitions. [2022-11-16 11:14:17,670 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5644208037825059 [2022-11-16 11:14:17,670 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1910 transitions. [2022-11-16 11:14:17,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1910 transitions. [2022-11-16 11:14:17,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:14:17,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1910 transitions. [2022-11-16 11:14:17,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 53.05555555555556) internal successors, (1910), 36 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:17,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:17,677 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:17,677 INFO L175 Difference]: Start difference. First operand has 935 places, 1301 transitions, 25900 flow. Second operand 36 states and 1910 transitions. [2022-11-16 11:14:17,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 963 places, 1334 transitions, 29092 flow [2022-11-16 11:14:21,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 933 places, 1334 transitions, 28602 flow, removed 120 selfloop flow, removed 30 redundant places. [2022-11-16 11:14:21,093 INFO L231 Difference]: Finished difference. Result has 939 places, 1293 transitions, 25791 flow [2022-11-16 11:14:21,094 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=25422, PETRI_DIFFERENCE_MINUEND_PLACES=898, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=25791, PETRI_PLACES=939, PETRI_TRANSITIONS=1293} [2022-11-16 11:14:21,094 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 851 predicate places. [2022-11-16 11:14:21,094 INFO L495 AbstractCegarLoop]: Abstraction has has 939 places, 1293 transitions, 25791 flow [2022-11-16 11:14:21,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:21,095 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:14:21,095 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:14:21,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2022-11-16 11:14:21,095 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:14:21,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:14:21,095 INFO L85 PathProgramCache]: Analyzing trace with hash -359252944, now seen corresponding path program 208 times [2022-11-16 11:14:21,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:14:21,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68353147] [2022-11-16 11:14:21,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:21,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:14:21,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:21,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:21,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:14:21,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68353147] [2022-11-16 11:14:21,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68353147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:14:21,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:14:21,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:14:21,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215602647] [2022-11-16 11:14:21,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:14:21,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:14:21,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:14:21,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:14:21,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:14:21,644 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:14:21,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 939 places, 1293 transitions, 25791 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:21,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:14:21,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:14:21,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:14:26,454 INFO L130 PetriNetUnfolder]: 799/2569 cut-off events. [2022-11-16 11:14:26,454 INFO L131 PetriNetUnfolder]: For 121700/121700 co-relation queries the response was YES. [2022-11-16 11:14:26,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27501 conditions, 2569 events. 799/2569 cut-off events. For 121700/121700 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 21426 event pairs, 39 based on Foata normal form. 1/2568 useless extension candidates. Maximal degree in co-relation 27157. Up to 1961 conditions per place. [2022-11-16 11:14:26,527 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1152 selfloop transitions, 111 changer transitions 16/1318 dead transitions. [2022-11-16 11:14:26,527 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 962 places, 1318 transitions, 28527 flow [2022-11-16 11:14:26,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 11:14:26,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 11:14:26,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1595 transitions. [2022-11-16 11:14:26,530 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5656028368794326 [2022-11-16 11:14:26,530 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1595 transitions. [2022-11-16 11:14:26,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1595 transitions. [2022-11-16 11:14:26,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:14:26,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1595 transitions. [2022-11-16 11:14:26,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.166666666666664) internal successors, (1595), 30 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:26,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:26,534 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:26,534 INFO L175 Difference]: Start difference. First operand has 939 places, 1293 transitions, 25791 flow. Second operand 30 states and 1595 transitions. [2022-11-16 11:14:26,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 962 places, 1318 transitions, 28527 flow [2022-11-16 11:14:29,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 927 places, 1318 transitions, 27935 flow, removed 119 selfloop flow, removed 35 redundant places. [2022-11-16 11:14:29,137 INFO L231 Difference]: Finished difference. Result has 931 places, 1286 transitions, 25355 flow [2022-11-16 11:14:29,138 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=25203, PETRI_DIFFERENCE_MINUEND_PLACES=898, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=25355, PETRI_PLACES=931, PETRI_TRANSITIONS=1286} [2022-11-16 11:14:29,138 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 843 predicate places. [2022-11-16 11:14:29,138 INFO L495 AbstractCegarLoop]: Abstraction has has 931 places, 1286 transitions, 25355 flow [2022-11-16 11:14:29,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:29,139 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:14:29,139 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:14:29,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2022-11-16 11:14:29,139 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:14:29,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:14:29,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1344540094, now seen corresponding path program 209 times [2022-11-16 11:14:29,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:14:29,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509556188] [2022-11-16 11:14:29,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:29,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:14:29,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:29,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:29,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:14:29,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509556188] [2022-11-16 11:14:29,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509556188] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:14:29,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:14:29,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:14:29,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176993951] [2022-11-16 11:14:29,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:14:29,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:14:29,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:14:29,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:14:29,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:14:29,722 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:14:29,723 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 931 places, 1286 transitions, 25355 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:29,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:14:29,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:14:29,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:14:34,178 INFO L130 PetriNetUnfolder]: 798/2555 cut-off events. [2022-11-16 11:14:34,179 INFO L131 PetriNetUnfolder]: For 121282/121282 co-relation queries the response was YES. [2022-11-16 11:14:34,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27247 conditions, 2555 events. 798/2555 cut-off events. For 121282/121282 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 21242 event pairs, 42 based on Foata normal form. 1/2552 useless extension candidates. Maximal degree in co-relation 26904. Up to 1924 conditions per place. [2022-11-16 11:14:34,249 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1132 selfloop transitions, 118 changer transitions 23/1312 dead transitions. [2022-11-16 11:14:34,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 947 places, 1312 transitions, 28089 flow [2022-11-16 11:14:34,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 11:14:34,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-16 11:14:34,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1656 transitions. [2022-11-16 11:14:34,251 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5682910089224433 [2022-11-16 11:14:34,251 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1656 transitions. [2022-11-16 11:14:34,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1656 transitions. [2022-11-16 11:14:34,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:14:34,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1656 transitions. [2022-11-16 11:14:34,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.41935483870968) internal successors, (1656), 31 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:34,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:34,255 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:34,255 INFO L175 Difference]: Start difference. First operand has 931 places, 1286 transitions, 25355 flow. Second operand 31 states and 1656 transitions. [2022-11-16 11:14:34,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 947 places, 1312 transitions, 28089 flow [2022-11-16 11:14:36,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 920 places, 1312 transitions, 27820 flow, removed 9 selfloop flow, removed 27 redundant places. [2022-11-16 11:14:37,019 INFO L231 Difference]: Finished difference. Result has 924 places, 1271 transitions, 25161 flow [2022-11-16 11:14:37,020 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=25092, PETRI_DIFFERENCE_MINUEND_PLACES=890, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=25161, PETRI_PLACES=924, PETRI_TRANSITIONS=1271} [2022-11-16 11:14:37,020 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 836 predicate places. [2022-11-16 11:14:37,020 INFO L495 AbstractCegarLoop]: Abstraction has has 924 places, 1271 transitions, 25161 flow [2022-11-16 11:14:37,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:37,020 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:14:37,021 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:14:37,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2022-11-16 11:14:37,021 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:14:37,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:14:37,021 INFO L85 PathProgramCache]: Analyzing trace with hash -2138442258, now seen corresponding path program 210 times [2022-11-16 11:14:37,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:14:37,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464568831] [2022-11-16 11:14:37,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:37,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:14:37,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:37,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:37,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:14:37,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464568831] [2022-11-16 11:14:37,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464568831] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:14:37,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:14:37,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:14:37,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801637938] [2022-11-16 11:14:37,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:14:37,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:14:37,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:14:37,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:14:37,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:14:37,532 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:14:37,532 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 924 places, 1271 transitions, 25161 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:37,532 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:14:37,532 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:14:37,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:14:41,276 INFO L130 PetriNetUnfolder]: 795/2553 cut-off events. [2022-11-16 11:14:41,276 INFO L131 PetriNetUnfolder]: For 121627/121627 co-relation queries the response was YES. [2022-11-16 11:14:41,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27270 conditions, 2553 events. 795/2553 cut-off events. For 121627/121627 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 21280 event pairs, 45 based on Foata normal form. 1/2550 useless extension candidates. Maximal degree in co-relation 26929. Up to 1762 conditions per place. [2022-11-16 11:14:41,343 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1018 selfloop transitions, 231 changer transitions 22/1310 dead transitions. [2022-11-16 11:14:41,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 948 places, 1310 transitions, 28306 flow [2022-11-16 11:14:41,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-16 11:14:41,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-16 11:14:41,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1903 transitions. [2022-11-16 11:14:41,346 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5623522458628841 [2022-11-16 11:14:41,346 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1903 transitions. [2022-11-16 11:14:41,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1903 transitions. [2022-11-16 11:14:41,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:14:41,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1903 transitions. [2022-11-16 11:14:41,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.861111111111114) internal successors, (1903), 36 states have internal predecessors, (1903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:41,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:41,350 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:41,351 INFO L175 Difference]: Start difference. First operand has 924 places, 1271 transitions, 25161 flow. Second operand 36 states and 1903 transitions. [2022-11-16 11:14:41,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 948 places, 1310 transitions, 28306 flow [2022-11-16 11:14:44,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 916 places, 1310 transitions, 27946 flow, removed 28 selfloop flow, removed 32 redundant places. [2022-11-16 11:14:44,197 INFO L231 Difference]: Finished difference. Result has 924 places, 1267 transitions, 25298 flow [2022-11-16 11:14:44,197 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=24809, PETRI_DIFFERENCE_MINUEND_PLACES=881, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=229, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1040, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=25298, PETRI_PLACES=924, PETRI_TRANSITIONS=1267} [2022-11-16 11:14:44,197 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 836 predicate places. [2022-11-16 11:14:44,198 INFO L495 AbstractCegarLoop]: Abstraction has has 924 places, 1267 transitions, 25298 flow [2022-11-16 11:14:44,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:44,198 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:14:44,198 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:14:44,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2022-11-16 11:14:44,198 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:14:44,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:14:44,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1970967598, now seen corresponding path program 211 times [2022-11-16 11:14:44,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:14:44,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143161936] [2022-11-16 11:14:44,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:44,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:14:44,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:44,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:44,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:14:44,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143161936] [2022-11-16 11:14:44,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143161936] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:14:44,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:14:44,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:14:44,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621282733] [2022-11-16 11:14:44,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:14:44,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:14:44,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:14:44,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:14:44,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:14:44,739 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:14:44,739 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 924 places, 1267 transitions, 25298 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:44,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:14:44,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:14:44,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:14:49,163 INFO L130 PetriNetUnfolder]: 791/2557 cut-off events. [2022-11-16 11:14:49,163 INFO L131 PetriNetUnfolder]: For 123538/123538 co-relation queries the response was YES. [2022-11-16 11:14:49,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27514 conditions, 2557 events. 791/2557 cut-off events. For 123538/123538 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 21304 event pairs, 41 based on Foata normal form. 1/2555 useless extension candidates. Maximal degree in co-relation 27171. Up to 1740 conditions per place. [2022-11-16 11:14:49,226 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1019 selfloop transitions, 211 changer transitions 46/1315 dead transitions. [2022-11-16 11:14:49,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 953 places, 1315 transitions, 28872 flow [2022-11-16 11:14:49,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-16 11:14:49,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-16 11:14:49,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1904 transitions. [2022-11-16 11:14:49,229 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5626477541371159 [2022-11-16 11:14:49,229 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1904 transitions. [2022-11-16 11:14:49,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1904 transitions. [2022-11-16 11:14:49,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:14:49,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1904 transitions. [2022-11-16 11:14:49,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.888888888888886) internal successors, (1904), 36 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:49,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:49,233 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:49,234 INFO L175 Difference]: Start difference. First operand has 924 places, 1267 transitions, 25298 flow. Second operand 36 states and 1904 transitions. [2022-11-16 11:14:49,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 953 places, 1315 transitions, 28872 flow [2022-11-16 11:14:52,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 920 places, 1315 transitions, 28265 flow, removed 50 selfloop flow, removed 33 redundant places. [2022-11-16 11:14:52,578 INFO L231 Difference]: Finished difference. Result has 927 places, 1246 transitions, 24838 flow [2022-11-16 11:14:52,579 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=24742, PETRI_DIFFERENCE_MINUEND_PLACES=885, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1059, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=24838, PETRI_PLACES=927, PETRI_TRANSITIONS=1246} [2022-11-16 11:14:52,579 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 839 predicate places. [2022-11-16 11:14:52,579 INFO L495 AbstractCegarLoop]: Abstraction has has 927 places, 1246 transitions, 24838 flow [2022-11-16 11:14:52,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:52,580 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:14:52,580 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:14:52,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2022-11-16 11:14:52,580 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:14:52,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:14:52,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1593916288, now seen corresponding path program 212 times [2022-11-16 11:14:52,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:14:52,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290620543] [2022-11-16 11:14:52,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:52,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:14:52,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:53,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:53,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:14:53,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290620543] [2022-11-16 11:14:53,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290620543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:14:53,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:14:53,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:14:53,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102635805] [2022-11-16 11:14:53,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:14:53,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:14:53,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:14:53,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:14:53,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:14:53,240 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:14:53,241 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 927 places, 1246 transitions, 24838 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:53,241 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:14:53,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:14:53,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:14:57,554 INFO L130 PetriNetUnfolder]: 769/2476 cut-off events. [2022-11-16 11:14:57,554 INFO L131 PetriNetUnfolder]: For 120601/120601 co-relation queries the response was YES. [2022-11-16 11:14:57,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26671 conditions, 2476 events. 769/2476 cut-off events. For 120601/120601 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 20427 event pairs, 40 based on Foata normal form. 1/2474 useless extension candidates. Maximal degree in co-relation 26328. Up to 1874 conditions per place. [2022-11-16 11:14:57,625 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1094 selfloop transitions, 100 changer transitions 39/1272 dead transitions. [2022-11-16 11:14:57,625 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 950 places, 1272 transitions, 27473 flow [2022-11-16 11:14:57,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 11:14:57,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-16 11:14:57,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1702 transitions. [2022-11-16 11:14:57,628 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5658244680851063 [2022-11-16 11:14:57,628 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1702 transitions. [2022-11-16 11:14:57,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1702 transitions. [2022-11-16 11:14:57,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:14:57,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1702 transitions. [2022-11-16 11:14:57,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.1875) internal successors, (1702), 32 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:57,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:57,631 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:57,632 INFO L175 Difference]: Start difference. First operand has 927 places, 1246 transitions, 24838 flow. Second operand 32 states and 1702 transitions. [2022-11-16 11:14:57,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 950 places, 1272 transitions, 27473 flow [2022-11-16 11:15:00,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 921 places, 1272 transitions, 26830 flow, removed 162 selfloop flow, removed 29 redundant places. [2022-11-16 11:15:00,687 INFO L231 Difference]: Finished difference. Result has 925 places, 1219 transitions, 24070 flow [2022-11-16 11:15:00,688 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=24199, PETRI_DIFFERENCE_MINUEND_PLACES=890, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=24070, PETRI_PLACES=925, PETRI_TRANSITIONS=1219} [2022-11-16 11:15:00,688 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 837 predicate places. [2022-11-16 11:15:00,688 INFO L495 AbstractCegarLoop]: Abstraction has has 925 places, 1219 transitions, 24070 flow [2022-11-16 11:15:00,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:00,689 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:15:00,689 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:15:00,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2022-11-16 11:15:00,689 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:15:00,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:15:00,689 INFO L85 PathProgramCache]: Analyzing trace with hash -953027210, now seen corresponding path program 213 times [2022-11-16 11:15:00,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:15:00,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078101259] [2022-11-16 11:15:00,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:00,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:15:00,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:01,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:15:01,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:15:01,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078101259] [2022-11-16 11:15:01,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078101259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:15:01,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:15:01,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:15:01,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943515508] [2022-11-16 11:15:01,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:15:01,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:15:01,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:15:01,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:15:01,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:15:01,319 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:15:01,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 925 places, 1219 transitions, 24070 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:01,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:15:01,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:15:01,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:15:05,190 INFO L130 PetriNetUnfolder]: 759/2440 cut-off events. [2022-11-16 11:15:05,190 INFO L131 PetriNetUnfolder]: For 119412/119412 co-relation queries the response was YES. [2022-11-16 11:15:05,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26264 conditions, 2440 events. 759/2440 cut-off events. For 119412/119412 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 20057 event pairs, 41 based on Foata normal form. 1/2438 useless extension candidates. Maximal degree in co-relation 25922. Up to 1839 conditions per place. [2022-11-16 11:15:05,257 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1067 selfloop transitions, 130 changer transitions 17/1253 dead transitions. [2022-11-16 11:15:05,257 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 935 places, 1253 transitions, 27135 flow [2022-11-16 11:15:05,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-16 11:15:05,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-16 11:15:05,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2011 transitions. [2022-11-16 11:15:05,262 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.562989921612542 [2022-11-16 11:15:05,262 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2011 transitions. [2022-11-16 11:15:05,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2011 transitions. [2022-11-16 11:15:05,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:15:05,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2011 transitions. [2022-11-16 11:15:05,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.921052631578945) internal successors, (2011), 38 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:05,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:05,270 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:05,270 INFO L175 Difference]: Start difference. First operand has 925 places, 1219 transitions, 24070 flow. Second operand 38 states and 2011 transitions. [2022-11-16 11:15:05,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 935 places, 1253 transitions, 27135 flow [2022-11-16 11:15:08,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 897 places, 1253 transitions, 26647 flow, removed 38 selfloop flow, removed 38 redundant places. [2022-11-16 11:15:08,909 INFO L231 Difference]: Finished difference. Result has 905 places, 1221 transitions, 24129 flow [2022-11-16 11:15:08,909 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=23610, PETRI_DIFFERENCE_MINUEND_PLACES=860, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1090, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=24129, PETRI_PLACES=905, PETRI_TRANSITIONS=1221} [2022-11-16 11:15:08,910 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 817 predicate places. [2022-11-16 11:15:08,910 INFO L495 AbstractCegarLoop]: Abstraction has has 905 places, 1221 transitions, 24129 flow [2022-11-16 11:15:08,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:08,910 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:15:08,910 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:15:08,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2022-11-16 11:15:08,910 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:15:08,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:15:08,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1932938860, now seen corresponding path program 214 times [2022-11-16 11:15:08,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:15:08,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765107912] [2022-11-16 11:15:08,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:08,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:15:08,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:09,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:15:09,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:15:09,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765107912] [2022-11-16 11:15:09,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765107912] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:15:09,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:15:09,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:15:09,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340003573] [2022-11-16 11:15:09,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:15:09,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:15:09,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:15:09,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:15:09,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:15:09,480 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:15:09,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 905 places, 1221 transitions, 24129 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:09,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:15:09,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:15:09,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:15:13,832 INFO L130 PetriNetUnfolder]: 757/2437 cut-off events. [2022-11-16 11:15:13,832 INFO L131 PetriNetUnfolder]: For 118442/118442 co-relation queries the response was YES. [2022-11-16 11:15:13,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26156 conditions, 2437 events. 757/2437 cut-off events. For 118442/118442 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 20034 event pairs, 39 based on Foata normal form. 1/2435 useless extension candidates. Maximal degree in co-relation 25819. Up to 1834 conditions per place. [2022-11-16 11:15:13,879 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1060 selfloop transitions, 137 changer transitions 16/1252 dead transitions. [2022-11-16 11:15:13,879 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 937 places, 1252 transitions, 27154 flow [2022-11-16 11:15:13,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-16 11:15:13,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-16 11:15:13,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2060 transitions. [2022-11-16 11:15:13,881 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5619203491543917 [2022-11-16 11:15:13,881 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2060 transitions. [2022-11-16 11:15:13,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2060 transitions. [2022-11-16 11:15:13,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:15:13,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2060 transitions. [2022-11-16 11:15:13,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 52.82051282051282) internal successors, (2060), 39 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:13,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:13,886 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:13,886 INFO L175 Difference]: Start difference. First operand has 905 places, 1221 transitions, 24129 flow. Second operand 39 states and 2060 transitions. [2022-11-16 11:15:13,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 937 places, 1252 transitions, 27154 flow [2022-11-16 11:15:16,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 904 places, 1252 transitions, 26685 flow, removed 123 selfloop flow, removed 33 redundant places. [2022-11-16 11:15:16,114 INFO L231 Difference]: Finished difference. Result has 910 places, 1221 transitions, 24183 flow [2022-11-16 11:15:16,114 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=23670, PETRI_DIFFERENCE_MINUEND_PLACES=866, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1085, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=24183, PETRI_PLACES=910, PETRI_TRANSITIONS=1221} [2022-11-16 11:15:16,115 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 822 predicate places. [2022-11-16 11:15:16,115 INFO L495 AbstractCegarLoop]: Abstraction has has 910 places, 1221 transitions, 24183 flow [2022-11-16 11:15:16,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:16,115 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:15:16,115 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:15:16,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2022-11-16 11:15:16,115 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:15:16,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:15:16,116 INFO L85 PathProgramCache]: Analyzing trace with hash 361932152, now seen corresponding path program 215 times [2022-11-16 11:15:16,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:15:16,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725702232] [2022-11-16 11:15:16,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:16,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:15:16,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:16,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:15:16,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:15:16,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725702232] [2022-11-16 11:15:16,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725702232] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:15:16,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:15:16,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:15:16,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420347788] [2022-11-16 11:15:16,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:15:16,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:15:16,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:15:16,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:15:16,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:15:16,699 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:15:16,700 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 910 places, 1221 transitions, 24183 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:16,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:15:16,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:15:16,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:15:20,681 INFO L130 PetriNetUnfolder]: 760/2431 cut-off events. [2022-11-16 11:15:20,681 INFO L131 PetriNetUnfolder]: For 120947/120947 co-relation queries the response was YES. [2022-11-16 11:15:20,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26262 conditions, 2431 events. 760/2431 cut-off events. For 120947/120947 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 19916 event pairs, 41 based on Foata normal form. 1/2428 useless extension candidates. Maximal degree in co-relation 25924. Up to 1857 conditions per place. [2022-11-16 11:15:20,743 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1085 selfloop transitions, 119 changer transitions 16/1259 dead transitions. [2022-11-16 11:15:20,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 940 places, 1259 transitions, 27329 flow [2022-11-16 11:15:20,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-16 11:15:20,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-16 11:15:20,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2009 transitions. [2022-11-16 11:15:20,746 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5624300111982082 [2022-11-16 11:15:20,746 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2009 transitions. [2022-11-16 11:15:20,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2009 transitions. [2022-11-16 11:15:20,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:15:20,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2009 transitions. [2022-11-16 11:15:20,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.86842105263158) internal successors, (2009), 38 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:20,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:20,751 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:20,751 INFO L175 Difference]: Start difference. First operand has 910 places, 1221 transitions, 24183 flow. Second operand 38 states and 2009 transitions. [2022-11-16 11:15:20,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 940 places, 1259 transitions, 27329 flow [2022-11-16 11:15:23,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 907 places, 1259 transitions, 26830 flow, removed 128 selfloop flow, removed 33 redundant places. [2022-11-16 11:15:23,663 INFO L231 Difference]: Finished difference. Result has 915 places, 1228 transitions, 24260 flow [2022-11-16 11:15:23,664 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=23708, PETRI_DIFFERENCE_MINUEND_PLACES=870, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=24260, PETRI_PLACES=915, PETRI_TRANSITIONS=1228} [2022-11-16 11:15:23,664 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 827 predicate places. [2022-11-16 11:15:23,664 INFO L495 AbstractCegarLoop]: Abstraction has has 915 places, 1228 transitions, 24260 flow [2022-11-16 11:15:23,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:23,664 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:15:23,664 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:15:23,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2022-11-16 11:15:23,665 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:15:23,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:15:23,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1620463998, now seen corresponding path program 216 times [2022-11-16 11:15:23,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:15:23,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212963178] [2022-11-16 11:15:23,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:23,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:15:23,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:24,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:15:24,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:15:24,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212963178] [2022-11-16 11:15:24,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212963178] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:15:24,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:15:24,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:15:24,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676652938] [2022-11-16 11:15:24,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:15:24,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:15:24,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:15:24,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:15:24,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:15:24,265 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:15:24,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 915 places, 1228 transitions, 24260 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:24,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:15:24,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:15:24,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:15:28,578 INFO L130 PetriNetUnfolder]: 755/2430 cut-off events. [2022-11-16 11:15:28,578 INFO L131 PetriNetUnfolder]: For 117376/117376 co-relation queries the response was YES. [2022-11-16 11:15:28,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25996 conditions, 2430 events. 755/2430 cut-off events. For 117376/117376 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 19943 event pairs, 41 based on Foata normal form. 1/2428 useless extension candidates. Maximal degree in co-relation 25653. Up to 1783 conditions per place. [2022-11-16 11:15:28,858 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1050 selfloop transitions, 115 changer transitions 51/1255 dead transitions. [2022-11-16 11:15:28,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 942 places, 1255 transitions, 26982 flow [2022-11-16 11:15:28,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 11:15:28,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-16 11:15:28,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1789 transitions. [2022-11-16 11:15:28,861 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5597622027534418 [2022-11-16 11:15:28,861 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1789 transitions. [2022-11-16 11:15:28,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1789 transitions. [2022-11-16 11:15:28,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:15:28,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1789 transitions. [2022-11-16 11:15:28,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.61764705882353) internal successors, (1789), 34 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:28,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:28,865 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:28,866 INFO L175 Difference]: Start difference. First operand has 915 places, 1228 transitions, 24260 flow. Second operand 34 states and 1789 transitions. [2022-11-16 11:15:28,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 942 places, 1255 transitions, 26982 flow [2022-11-16 11:15:31,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 913 places, 1255 transitions, 26558 flow, removed 131 selfloop flow, removed 29 redundant places. [2022-11-16 11:15:31,572 INFO L231 Difference]: Finished difference. Result has 918 places, 1186 transitions, 22980 flow [2022-11-16 11:15:31,572 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=23842, PETRI_DIFFERENCE_MINUEND_PLACES=880, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=22980, PETRI_PLACES=918, PETRI_TRANSITIONS=1186} [2022-11-16 11:15:31,573 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 830 predicate places. [2022-11-16 11:15:31,573 INFO L495 AbstractCegarLoop]: Abstraction has has 918 places, 1186 transitions, 22980 flow [2022-11-16 11:15:31,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:31,573 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:15:31,573 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:15:31,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2022-11-16 11:15:31,573 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:15:31,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:15:31,574 INFO L85 PathProgramCache]: Analyzing trace with hash 925682230, now seen corresponding path program 217 times [2022-11-16 11:15:31,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:15:31,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900429111] [2022-11-16 11:15:31,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:31,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:15:31,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:32,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:15:32,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:15:32,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900429111] [2022-11-16 11:15:32,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900429111] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:15:32,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:15:32,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:15:32,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335764623] [2022-11-16 11:15:32,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:15:32,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:15:32,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:15:32,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:15:32,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:15:32,133 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:15:32,134 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 918 places, 1186 transitions, 22980 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:32,134 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:15:32,134 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:15:32,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:15:35,965 INFO L130 PetriNetUnfolder]: 741/2385 cut-off events. [2022-11-16 11:15:35,965 INFO L131 PetriNetUnfolder]: For 113981/113981 co-relation queries the response was YES. [2022-11-16 11:15:36,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25221 conditions, 2385 events. 741/2385 cut-off events. For 113981/113981 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 19392 event pairs, 43 based on Foata normal form. 1/2383 useless extension candidates. Maximal degree in co-relation 24878. Up to 1687 conditions per place. [2022-11-16 11:15:36,029 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 982 selfloop transitions, 148 changer transitions 47/1216 dead transitions. [2022-11-16 11:15:36,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 931 places, 1216 transitions, 25652 flow [2022-11-16 11:15:36,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 11:15:36,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-16 11:15:36,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1746 transitions. [2022-11-16 11:15:36,031 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.562862669245648 [2022-11-16 11:15:36,031 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1746 transitions. [2022-11-16 11:15:36,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1746 transitions. [2022-11-16 11:15:36,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:15:36,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1746 transitions. [2022-11-16 11:15:36,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 52.90909090909091) internal successors, (1746), 33 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:36,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:36,036 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:36,036 INFO L175 Difference]: Start difference. First operand has 918 places, 1186 transitions, 22980 flow. Second operand 33 states and 1746 transitions. [2022-11-16 11:15:36,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 931 places, 1216 transitions, 25652 flow [2022-11-16 11:15:38,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 892 places, 1216 transitions, 25024 flow, removed 79 selfloop flow, removed 39 redundant places. [2022-11-16 11:15:38,557 INFO L231 Difference]: Finished difference. Result has 897 places, 1151 transitions, 21812 flow [2022-11-16 11:15:38,558 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=22362, PETRI_DIFFERENCE_MINUEND_PLACES=860, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1038, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=21812, PETRI_PLACES=897, PETRI_TRANSITIONS=1151} [2022-11-16 11:15:38,558 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 809 predicate places. [2022-11-16 11:15:38,558 INFO L495 AbstractCegarLoop]: Abstraction has has 897 places, 1151 transitions, 21812 flow [2022-11-16 11:15:38,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:38,558 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:15:38,559 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:15:38,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2022-11-16 11:15:38,559 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:15:38,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:15:38,559 INFO L85 PathProgramCache]: Analyzing trace with hash 528562542, now seen corresponding path program 218 times [2022-11-16 11:15:38,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:15:38,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072399102] [2022-11-16 11:15:38,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:38,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:15:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:39,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:15:39,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:15:39,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072399102] [2022-11-16 11:15:39,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072399102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:15:39,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:15:39,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:15:39,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855862960] [2022-11-16 11:15:39,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:15:39,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:15:39,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:15:39,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:15:39,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:15:39,205 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:15:39,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 897 places, 1151 transitions, 21812 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:39,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:15:39,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:15:39,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:15:43,196 INFO L130 PetriNetUnfolder]: 727/2324 cut-off events. [2022-11-16 11:15:43,196 INFO L131 PetriNetUnfolder]: For 109861/109861 co-relation queries the response was YES. [2022-11-16 11:15:43,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24282 conditions, 2324 events. 727/2324 cut-off events. For 109861/109861 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 18683 event pairs, 44 based on Foata normal form. 1/2322 useless extension candidates. Maximal degree in co-relation 23948. Up to 1677 conditions per place. [2022-11-16 11:15:43,252 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 965 selfloop transitions, 101 changer transitions 73/1178 dead transitions. [2022-11-16 11:15:43,252 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 918 places, 1178 transitions, 24353 flow [2022-11-16 11:15:43,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 11:15:43,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-16 11:15:43,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1743 transitions. [2022-11-16 11:15:43,254 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5618955512572534 [2022-11-16 11:15:43,254 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1743 transitions. [2022-11-16 11:15:43,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1743 transitions. [2022-11-16 11:15:43,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:15:43,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1743 transitions. [2022-11-16 11:15:43,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 52.81818181818182) internal successors, (1743), 33 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:43,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:43,258 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:43,259 INFO L175 Difference]: Start difference. First operand has 897 places, 1151 transitions, 21812 flow. Second operand 33 states and 1743 transitions. [2022-11-16 11:15:43,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 918 places, 1178 transitions, 24353 flow [2022-11-16 11:15:45,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 885 places, 1178 transitions, 23950 flow, removed 42 selfloop flow, removed 33 redundant places. [2022-11-16 11:15:45,704 INFO L231 Difference]: Finished difference. Result has 889 places, 1091 transitions, 20245 flow [2022-11-16 11:15:45,704 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=21413, PETRI_DIFFERENCE_MINUEND_PLACES=853, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1050, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=20245, PETRI_PLACES=889, PETRI_TRANSITIONS=1091} [2022-11-16 11:15:45,705 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 801 predicate places. [2022-11-16 11:15:45,705 INFO L495 AbstractCegarLoop]: Abstraction has has 889 places, 1091 transitions, 20245 flow [2022-11-16 11:15:45,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:45,705 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:15:45,705 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:15:45,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2022-11-16 11:15:45,706 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:15:45,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:15:45,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1637051532, now seen corresponding path program 219 times [2022-11-16 11:15:45,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:15:45,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099129905] [2022-11-16 11:15:45,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:45,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:15:45,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:46,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:15:46,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:15:46,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099129905] [2022-11-16 11:15:46,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099129905] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:15:46,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:15:46,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-16 11:15:46,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644839106] [2022-11-16 11:15:46,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:15:46,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:15:46,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:15:46,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:15:46,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:15:46,317 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:15:46,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 889 places, 1091 transitions, 20245 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:46,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:15:46,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:15:46,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:15:49,999 INFO L130 PetriNetUnfolder]: 712/2250 cut-off events. [2022-11-16 11:15:49,999 INFO L131 PetriNetUnfolder]: For 108876/108876 co-relation queries the response was YES. [2022-11-16 11:15:50,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23392 conditions, 2250 events. 712/2250 cut-off events. For 108876/108876 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 17813 event pairs, 43 based on Foata normal form. 1/2249 useless extension candidates. Maximal degree in co-relation 23061. Up to 1673 conditions per place. [2022-11-16 11:15:50,064 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 964 selfloop transitions, 103 changer transitions 18/1124 dead transitions. [2022-11-16 11:15:50,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 904 places, 1124 transitions, 23073 flow [2022-11-16 11:15:50,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-16 11:15:50,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-16 11:15:50,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1990 transitions. [2022-11-16 11:15:50,067 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5571108622620381 [2022-11-16 11:15:50,067 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 1990 transitions. [2022-11-16 11:15:50,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 1990 transitions. [2022-11-16 11:15:50,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:15:50,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 1990 transitions. [2022-11-16 11:15:50,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.36842105263158) internal successors, (1990), 38 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:50,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:50,072 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:50,072 INFO L175 Difference]: Start difference. First operand has 889 places, 1091 transitions, 20245 flow. Second operand 38 states and 1990 transitions. [2022-11-16 11:15:50,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 904 places, 1124 transitions, 23073 flow [2022-11-16 11:15:52,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 847 places, 1124 transitions, 22283 flow, removed 112 selfloop flow, removed 57 redundant places. [2022-11-16 11:15:52,124 INFO L231 Difference]: Finished difference. Result has 854 places, 1091 transitions, 19840 flow [2022-11-16 11:15:52,125 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=19490, PETRI_DIFFERENCE_MINUEND_PLACES=810, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1091, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=989, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=19840, PETRI_PLACES=854, PETRI_TRANSITIONS=1091} [2022-11-16 11:15:52,125 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 766 predicate places. [2022-11-16 11:15:52,125 INFO L495 AbstractCegarLoop]: Abstraction has has 854 places, 1091 transitions, 19840 flow [2022-11-16 11:15:52,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:52,125 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:15:52,125 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:15:52,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2022-11-16 11:15:52,126 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:15:52,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:15:52,126 INFO L85 PathProgramCache]: Analyzing trace with hash -2086834892, now seen corresponding path program 220 times [2022-11-16 11:15:52,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:15:52,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189024122] [2022-11-16 11:15:52,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:52,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:15:52,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:52,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:15:52,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:15:52,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189024122] [2022-11-16 11:15:52,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189024122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:15:52,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:15:52,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-16 11:15:52,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117893098] [2022-11-16 11:15:52,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:15:52,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:15:52,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:15:52,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:15:52,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:15:52,792 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:15:52,792 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 854 places, 1091 transitions, 19840 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:52,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:15:52,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:15:52,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:15:56,086 INFO L130 PetriNetUnfolder]: 705/2227 cut-off events. [2022-11-16 11:15:56,087 INFO L131 PetriNetUnfolder]: For 100122/100122 co-relation queries the response was YES. [2022-11-16 11:15:56,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22691 conditions, 2227 events. 705/2227 cut-off events. For 100122/100122 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 17563 event pairs, 42 based on Foata normal form. 1/2224 useless extension candidates. Maximal degree in co-relation 22372. Up to 1669 conditions per place. [2022-11-16 11:15:56,137 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 957 selfloop transitions, 60 changer transitions 57/1113 dead transitions. [2022-11-16 11:15:56,138 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 881 places, 1113 transitions, 22203 flow [2022-11-16 11:15:56,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 11:15:56,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 11:15:56,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1834 transitions. [2022-11-16 11:15:56,140 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5574468085106383 [2022-11-16 11:15:56,140 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1834 transitions. [2022-11-16 11:15:56,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1834 transitions. [2022-11-16 11:15:56,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:15:56,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1834 transitions. [2022-11-16 11:15:56,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.4) internal successors, (1834), 35 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:56,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:56,144 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:56,144 INFO L175 Difference]: Start difference. First operand has 854 places, 1091 transitions, 19840 flow. Second operand 35 states and 1834 transitions. [2022-11-16 11:15:56,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 881 places, 1113 transitions, 22203 flow [2022-11-16 11:15:58,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 848 places, 1113 transitions, 21766 flow, removed 110 selfloop flow, removed 33 redundant places. [2022-11-16 11:15:58,134 INFO L231 Difference]: Finished difference. Result has 853 places, 1046 transitions, 18783 flow [2022-11-16 11:15:58,135 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=19411, PETRI_DIFFERENCE_MINUEND_PLACES=814, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1091, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1031, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=18783, PETRI_PLACES=853, PETRI_TRANSITIONS=1046} [2022-11-16 11:15:58,135 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 765 predicate places. [2022-11-16 11:15:58,135 INFO L495 AbstractCegarLoop]: Abstraction has has 853 places, 1046 transitions, 18783 flow [2022-11-16 11:15:58,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:58,135 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:15:58,136 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:15:58,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2022-11-16 11:15:58,136 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:15:58,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:15:58,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1963876810, now seen corresponding path program 221 times [2022-11-16 11:15:58,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:15:58,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209694509] [2022-11-16 11:15:58,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:58,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:15:58,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:58,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:15:58,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:15:58,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209694509] [2022-11-16 11:15:58,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209694509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:15:58,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:15:58,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 11:15:58,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094684519] [2022-11-16 11:15:58,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:15:58,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 11:15:58,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:15:58,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 11:15:58,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:15:58,793 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:15:58,793 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 853 places, 1046 transitions, 18783 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:58,793 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:15:58,793 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:15:58,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:16:02,627 INFO L130 PetriNetUnfolder]: 694/2179 cut-off events. [2022-11-16 11:16:02,627 INFO L131 PetriNetUnfolder]: For 95722/95722 co-relation queries the response was YES. [2022-11-16 11:16:02,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22003 conditions, 2179 events. 694/2179 cut-off events. For 95722/95722 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 17104 event pairs, 45 based on Foata normal form. 1/2178 useless extension candidates. Maximal degree in co-relation 21684. Up to 1658 conditions per place. [2022-11-16 11:16:02,666 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 946 selfloop transitions, 67 changer transitions 15/1067 dead transitions. [2022-11-16 11:16:02,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 856 places, 1067 transitions, 21168 flow [2022-11-16 11:16:02,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 11:16:02,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 11:16:02,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1828 transitions. [2022-11-16 11:16:02,669 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5556231003039513 [2022-11-16 11:16:02,669 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1828 transitions. [2022-11-16 11:16:02,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1828 transitions. [2022-11-16 11:16:02,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:16:02,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1828 transitions. [2022-11-16 11:16:02,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.22857142857143) internal successors, (1828), 35 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:02,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:02,672 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:02,672 INFO L175 Difference]: Start difference. First operand has 853 places, 1046 transitions, 18783 flow. Second operand 35 states and 1828 transitions. [2022-11-16 11:16:02,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 856 places, 1067 transitions, 21168 flow [2022-11-16 11:16:04,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 816 places, 1067 transitions, 20818 flow, removed 65 selfloop flow, removed 40 redundant places. [2022-11-16 11:16:04,451 INFO L231 Difference]: Finished difference. Result has 821 places, 1041 transitions, 18568 flow [2022-11-16 11:16:04,451 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=18449, PETRI_DIFFERENCE_MINUEND_PLACES=782, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1046, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=979, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=18568, PETRI_PLACES=821, PETRI_TRANSITIONS=1041} [2022-11-16 11:16:04,452 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 733 predicate places. [2022-11-16 11:16:04,452 INFO L495 AbstractCegarLoop]: Abstraction has has 821 places, 1041 transitions, 18568 flow [2022-11-16 11:16:04,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:04,452 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:16:04,452 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:16:04,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2022-11-16 11:16:04,452 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:16:04,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:16:04,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1573213868, now seen corresponding path program 222 times [2022-11-16 11:16:04,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:16:04,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164443142] [2022-11-16 11:16:04,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:04,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:16:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:05,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:16:05,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:16:05,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164443142] [2022-11-16 11:16:05,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164443142] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:16:05,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:16:05,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 11:16:05,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085743233] [2022-11-16 11:16:05,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:16:05,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 11:16:05,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:16:05,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 11:16:05,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:16:05,151 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:16:05,151 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 821 places, 1041 transitions, 18568 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:05,151 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:16:05,151 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:16:05,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:16:08,755 INFO L130 PetriNetUnfolder]: 690/2168 cut-off events. [2022-11-16 11:16:08,755 INFO L131 PetriNetUnfolder]: For 92564/92564 co-relation queries the response was YES. [2022-11-16 11:16:08,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21672 conditions, 2168 events. 690/2168 cut-off events. For 92564/92564 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 17000 event pairs, 43 based on Foata normal form. 1/2166 useless extension candidates. Maximal degree in co-relation 21362. Up to 1656 conditions per place. [2022-11-16 11:16:08,811 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 945 selfloop transitions, 52 changer transitions 24/1060 dead transitions. [2022-11-16 11:16:08,811 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 845 places, 1060 transitions, 20736 flow [2022-11-16 11:16:08,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 11:16:08,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-16 11:16:08,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1723 transitions. [2022-11-16 11:16:08,813 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5554480980012895 [2022-11-16 11:16:08,813 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1723 transitions. [2022-11-16 11:16:08,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1723 transitions. [2022-11-16 11:16:08,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:16:08,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1723 transitions. [2022-11-16 11:16:08,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 52.21212121212121) internal successors, (1723), 33 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:08,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:08,818 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:08,818 INFO L175 Difference]: Start difference. First operand has 821 places, 1041 transitions, 18568 flow. Second operand 33 states and 1723 transitions. [2022-11-16 11:16:08,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 845 places, 1060 transitions, 20736 flow [2022-11-16 11:16:10,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 809 places, 1060 transitions, 20200 flow, removed 170 selfloop flow, removed 36 redundant places. [2022-11-16 11:16:10,390 INFO L231 Difference]: Finished difference. Result has 813 places, 1026 transitions, 17990 flow [2022-11-16 11:16:10,390 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=18044, PETRI_DIFFERENCE_MINUEND_PLACES=777, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1041, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=989, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=17990, PETRI_PLACES=813, PETRI_TRANSITIONS=1026} [2022-11-16 11:16:10,391 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 725 predicate places. [2022-11-16 11:16:10,391 INFO L495 AbstractCegarLoop]: Abstraction has has 813 places, 1026 transitions, 17990 flow [2022-11-16 11:16:10,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:10,391 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:16:10,391 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:16:10,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2022-11-16 11:16:10,391 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:16:10,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:16:10,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1574806274, now seen corresponding path program 223 times [2022-11-16 11:16:10,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:16:10,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955739899] [2022-11-16 11:16:10,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:10,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:16:10,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:11,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:16:11,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:16:11,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955739899] [2022-11-16 11:16:11,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955739899] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:16:11,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:16:11,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-16 11:16:11,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198673267] [2022-11-16 11:16:11,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:16:11,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:16:11,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:16:11,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:16:11,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:16:11,037 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:16:11,038 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 813 places, 1026 transitions, 17990 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:11,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:16:11,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:16:11,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:16:14,698 INFO L130 PetriNetUnfolder]: 697/2183 cut-off events. [2022-11-16 11:16:14,698 INFO L131 PetriNetUnfolder]: For 92928/92928 co-relation queries the response was YES. [2022-11-16 11:16:14,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21645 conditions, 2183 events. 697/2183 cut-off events. For 92928/92928 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 17184 event pairs, 38 based on Foata normal form. 1/2181 useless extension candidates. Maximal degree in co-relation 21339. Up to 1449 conditions per place. [2022-11-16 11:16:14,747 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 832 selfloop transitions, 201 changer transitions 21/1093 dead transitions. [2022-11-16 11:16:14,747 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 821 places, 1093 transitions, 21709 flow [2022-11-16 11:16:14,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-16 11:16:14,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-16 11:16:14,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2061 transitions. [2022-11-16 11:16:14,750 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5621931260229133 [2022-11-16 11:16:14,750 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2061 transitions. [2022-11-16 11:16:14,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2061 transitions. [2022-11-16 11:16:14,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:16:14,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2061 transitions. [2022-11-16 11:16:14,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 52.84615384615385) internal successors, (2061), 39 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:14,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:14,754 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:14,755 INFO L175 Difference]: Start difference. First operand has 813 places, 1026 transitions, 17990 flow. Second operand 39 states and 2061 transitions. [2022-11-16 11:16:14,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 821 places, 1093 transitions, 21709 flow [2022-11-16 11:16:16,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 785 places, 1093 transitions, 21122 flow, removed 114 selfloop flow, removed 36 redundant places. [2022-11-16 11:16:16,122 INFO L231 Difference]: Finished difference. Result has 792 places, 1038 transitions, 18360 flow [2022-11-16 11:16:16,122 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=17459, PETRI_DIFFERENCE_MINUEND_PLACES=747, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1026, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=832, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=18360, PETRI_PLACES=792, PETRI_TRANSITIONS=1038} [2022-11-16 11:16:16,122 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 704 predicate places. [2022-11-16 11:16:16,123 INFO L495 AbstractCegarLoop]: Abstraction has has 792 places, 1038 transitions, 18360 flow [2022-11-16 11:16:16,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:16,123 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:16:16,123 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:16:16,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2022-11-16 11:16:16,123 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:16:16,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:16:16,124 INFO L85 PathProgramCache]: Analyzing trace with hash -672498512, now seen corresponding path program 224 times [2022-11-16 11:16:16,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:16:16,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367196140] [2022-11-16 11:16:16,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:16,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:16:16,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:16,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:16:16,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:16:16,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367196140] [2022-11-16 11:16:16,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367196140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:16:16,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:16:16,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:16:16,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399282843] [2022-11-16 11:16:16,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:16:16,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:16:16,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:16:16,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:16:16,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:16:16,707 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:16:16,708 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 792 places, 1038 transitions, 18360 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:16,708 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:16:16,708 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:16:16,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:16:20,259 INFO L130 PetriNetUnfolder]: 691/2167 cut-off events. [2022-11-16 11:16:20,259 INFO L131 PetriNetUnfolder]: For 85868/85868 co-relation queries the response was YES. [2022-11-16 11:16:20,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20945 conditions, 2167 events. 691/2167 cut-off events. For 85868/85868 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 17024 event pairs, 38 based on Foata normal form. 1/2165 useless extension candidates. Maximal degree in co-relation 20652. Up to 1605 conditions per place. [2022-11-16 11:16:20,327 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 902 selfloop transitions, 111 changer transitions 15/1067 dead transitions. [2022-11-16 11:16:20,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 822 places, 1067 transitions, 20802 flow [2022-11-16 11:16:20,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-16 11:16:20,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-16 11:16:20,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1904 transitions. [2022-11-16 11:16:20,331 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5626477541371159 [2022-11-16 11:16:20,331 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1904 transitions. [2022-11-16 11:16:20,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1904 transitions. [2022-11-16 11:16:20,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:16:20,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1904 transitions. [2022-11-16 11:16:20,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.888888888888886) internal successors, (1904), 36 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:20,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:20,335 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:20,335 INFO L175 Difference]: Start difference. First operand has 792 places, 1038 transitions, 18360 flow. Second operand 36 states and 1904 transitions. [2022-11-16 11:16:20,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 822 places, 1067 transitions, 20802 flow [2022-11-16 11:16:21,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 790 places, 1067 transitions, 20214 flow, removed 162 selfloop flow, removed 32 redundant places. [2022-11-16 11:16:21,901 INFO L231 Difference]: Finished difference. Result has 798 places, 1037 transitions, 18064 flow [2022-11-16 11:16:21,902 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=17784, PETRI_DIFFERENCE_MINUEND_PLACES=755, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1038, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=927, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=18064, PETRI_PLACES=798, PETRI_TRANSITIONS=1037} [2022-11-16 11:16:21,902 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 710 predicate places. [2022-11-16 11:16:21,902 INFO L495 AbstractCegarLoop]: Abstraction has has 798 places, 1037 transitions, 18064 flow [2022-11-16 11:16:21,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:21,902 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:16:21,903 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:16:21,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2022-11-16 11:16:21,903 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:16:21,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:16:21,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1622837058, now seen corresponding path program 225 times [2022-11-16 11:16:21,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:16:21,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353968830] [2022-11-16 11:16:21,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:21,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:16:21,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:22,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:16:22,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:16:22,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353968830] [2022-11-16 11:16:22,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353968830] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:16:22,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:16:22,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:16:22,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610193659] [2022-11-16 11:16:22,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:16:22,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:16:22,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:16:22,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:16:22,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:16:22,588 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:16:22,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 798 places, 1037 transitions, 18064 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:22,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:16:22,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:16:22,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:16:25,947 INFO L130 PetriNetUnfolder]: 688/2144 cut-off events. [2022-11-16 11:16:25,947 INFO L131 PetriNetUnfolder]: For 81437/81437 co-relation queries the response was YES. [2022-11-16 11:16:25,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20675 conditions, 2144 events. 688/2144 cut-off events. For 81437/81437 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 16745 event pairs, 41 based on Foata normal form. 1/2142 useless extension candidates. Maximal degree in co-relation 20379. Up to 1598 conditions per place. [2022-11-16 11:16:25,997 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 895 selfloop transitions, 115 changer transitions 15/1064 dead transitions. [2022-11-16 11:16:25,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 829 places, 1064 transitions, 20493 flow [2022-11-16 11:16:25,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-16 11:16:25,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-16 11:16:26,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2002 transitions. [2022-11-16 11:16:26,000 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5604703247480403 [2022-11-16 11:16:26,000 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2002 transitions. [2022-11-16 11:16:26,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2002 transitions. [2022-11-16 11:16:26,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:16:26,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2002 transitions. [2022-11-16 11:16:26,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.68421052631579) internal successors, (2002), 38 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:26,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:26,005 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:26,005 INFO L175 Difference]: Start difference. First operand has 798 places, 1037 transitions, 18064 flow. Second operand 38 states and 2002 transitions. [2022-11-16 11:16:26,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 829 places, 1064 transitions, 20493 flow [2022-11-16 11:16:27,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 793 places, 1064 transitions, 20188 flow, removed 29 selfloop flow, removed 36 redundant places. [2022-11-16 11:16:27,408 INFO L231 Difference]: Finished difference. Result has 800 places, 1034 transitions, 18048 flow [2022-11-16 11:16:27,409 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=17777, PETRI_DIFFERENCE_MINUEND_PLACES=756, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1037, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=922, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=18048, PETRI_PLACES=800, PETRI_TRANSITIONS=1034} [2022-11-16 11:16:27,409 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 712 predicate places. [2022-11-16 11:16:27,409 INFO L495 AbstractCegarLoop]: Abstraction has has 800 places, 1034 transitions, 18048 flow [2022-11-16 11:16:27,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:27,409 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:16:27,409 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:16:27,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2022-11-16 11:16:27,410 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:16:27,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:16:27,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1735909186, now seen corresponding path program 226 times [2022-11-16 11:16:27,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:16:27,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84450721] [2022-11-16 11:16:27,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:27,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:16:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:27,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:16:27,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:16:27,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84450721] [2022-11-16 11:16:27,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84450721] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:16:27,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:16:27,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:16:27,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167824511] [2022-11-16 11:16:27,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:16:27,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:16:27,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:16:27,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:16:27,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:16:27,987 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:16:27,987 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 800 places, 1034 transitions, 18048 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:27,987 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:16:27,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:16:27,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:16:31,359 INFO L130 PetriNetUnfolder]: 687/2155 cut-off events. [2022-11-16 11:16:31,359 INFO L131 PetriNetUnfolder]: For 82022/82022 co-relation queries the response was YES. [2022-11-16 11:16:31,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20722 conditions, 2155 events. 687/2155 cut-off events. For 82022/82022 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 16891 event pairs, 44 based on Foata normal form. 1/2153 useless extension candidates. Maximal degree in co-relation 20426. Up to 1612 conditions per place. [2022-11-16 11:16:31,410 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 905 selfloop transitions, 97 changer transitions 19/1060 dead transitions. [2022-11-16 11:16:31,410 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 823 places, 1060 transitions, 20467 flow [2022-11-16 11:16:31,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 11:16:31,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-16 11:16:31,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1637 transitions. [2022-11-16 11:16:31,413 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.561770761839396 [2022-11-16 11:16:31,413 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1637 transitions. [2022-11-16 11:16:31,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1637 transitions. [2022-11-16 11:16:31,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:16:31,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1637 transitions. [2022-11-16 11:16:31,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 52.806451612903224) internal successors, (1637), 31 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:31,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:31,417 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:31,417 INFO L175 Difference]: Start difference. First operand has 800 places, 1034 transitions, 18048 flow. Second operand 31 states and 1637 transitions. [2022-11-16 11:16:31,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 823 places, 1060 transitions, 20467 flow [2022-11-16 11:16:33,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 788 places, 1060 transitions, 20197 flow, removed 22 selfloop flow, removed 35 redundant places. [2022-11-16 11:16:33,481 INFO L231 Difference]: Finished difference. Result has 795 places, 1030 transitions, 17945 flow [2022-11-16 11:16:33,481 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=17784, PETRI_DIFFERENCE_MINUEND_PLACES=758, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1034, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=937, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=17945, PETRI_PLACES=795, PETRI_TRANSITIONS=1030} [2022-11-16 11:16:33,482 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 707 predicate places. [2022-11-16 11:16:33,482 INFO L495 AbstractCegarLoop]: Abstraction has has 795 places, 1030 transitions, 17945 flow [2022-11-16 11:16:33,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:33,482 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:16:33,482 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:16:33,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2022-11-16 11:16:33,482 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:16:33,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:16:33,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1557328624, now seen corresponding path program 227 times [2022-11-16 11:16:33,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:16:33,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847637588] [2022-11-16 11:16:33,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:33,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:16:33,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:34,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:16:34,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:16:34,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847637588] [2022-11-16 11:16:34,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847637588] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:16:34,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:16:34,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:16:34,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373501702] [2022-11-16 11:16:34,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:16:34,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:16:34,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:16:34,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:16:34,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:16:34,047 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:16:34,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 795 places, 1030 transitions, 17945 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:34,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:16:34,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:16:34,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:16:37,846 INFO L130 PetriNetUnfolder]: 724/2279 cut-off events. [2022-11-16 11:16:37,846 INFO L131 PetriNetUnfolder]: For 89749/89749 co-relation queries the response was YES. [2022-11-16 11:16:37,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21999 conditions, 2279 events. 724/2279 cut-off events. For 89749/89749 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 18228 event pairs, 43 based on Foata normal form. 1/2277 useless extension candidates. Maximal degree in co-relation 21702. Up to 1589 conditions per place. [2022-11-16 11:16:37,898 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 895 selfloop transitions, 163 changer transitions 42/1139 dead transitions. [2022-11-16 11:16:37,898 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 823 places, 1139 transitions, 22388 flow [2022-11-16 11:16:37,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-16 11:16:37,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-16 11:16:37,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1958 transitions. [2022-11-16 11:16:37,901 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5629672225416906 [2022-11-16 11:16:37,901 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1958 transitions. [2022-11-16 11:16:37,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1958 transitions. [2022-11-16 11:16:37,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:16:37,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1958 transitions. [2022-11-16 11:16:37,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.91891891891892) internal successors, (1958), 37 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:37,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:37,906 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:37,906 INFO L175 Difference]: Start difference. First operand has 795 places, 1030 transitions, 17945 flow. Second operand 37 states and 1958 transitions. [2022-11-16 11:16:37,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 823 places, 1139 transitions, 22388 flow [2022-11-16 11:16:39,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 792 places, 1139 transitions, 22109 flow, removed 17 selfloop flow, removed 31 redundant places. [2022-11-16 11:16:39,467 INFO L231 Difference]: Finished difference. Result has 808 places, 1079 transitions, 19352 flow [2022-11-16 11:16:39,467 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=17692, PETRI_DIFFERENCE_MINUEND_PLACES=756, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1030, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=872, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=19352, PETRI_PLACES=808, PETRI_TRANSITIONS=1079} [2022-11-16 11:16:39,467 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 720 predicate places. [2022-11-16 11:16:39,468 INFO L495 AbstractCegarLoop]: Abstraction has has 808 places, 1079 transitions, 19352 flow [2022-11-16 11:16:39,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:39,468 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:16:39,468 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:16:39,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2022-11-16 11:16:39,469 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:16:39,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:16:39,469 INFO L85 PathProgramCache]: Analyzing trace with hash -6981524, now seen corresponding path program 228 times [2022-11-16 11:16:39,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:16:39,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661432052] [2022-11-16 11:16:39,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:39,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:16:39,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:40,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:16:40,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:16:40,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661432052] [2022-11-16 11:16:40,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661432052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:16:40,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:16:40,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 11:16:40,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909892818] [2022-11-16 11:16:40,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:16:40,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 11:16:40,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:16:40,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 11:16:40,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:16:40,046 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-16 11:16:40,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 808 places, 1079 transitions, 19352 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:40,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:16:40,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-16 11:16:40,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:16:44,440 INFO L130 PetriNetUnfolder]: 710/2242 cut-off events. [2022-11-16 11:16:44,440 INFO L131 PetriNetUnfolder]: For 91217/91217 co-relation queries the response was YES. [2022-11-16 11:16:44,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22140 conditions, 2242 events. 710/2242 cut-off events. For 91217/91217 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 17801 event pairs, 40 based on Foata normal form. 1/2240 useless extension candidates. Maximal degree in co-relation 21834. Up to 1488 conditions per place. [2022-11-16 11:16:44,493 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 871 selfloop transitions, 212 changer transitions 20/1142 dead transitions. [2022-11-16 11:16:44,493 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 843 places, 1142 transitions, 23195 flow [2022-11-16 11:16:44,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-16 11:16:44,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-16 11:16:44,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 2313 transitions. [2022-11-16 11:16:44,497 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5592359767891683 [2022-11-16 11:16:44,497 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 2313 transitions. [2022-11-16 11:16:44,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 2313 transitions. [2022-11-16 11:16:44,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:16:44,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 2313 transitions. [2022-11-16 11:16:44,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 52.56818181818182) internal successors, (2313), 44 states have internal predecessors, (2313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:44,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 94.0) internal successors, (4230), 45 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:44,503 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 94.0) internal successors, (4230), 45 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:44,503 INFO L175 Difference]: Start difference. First operand has 808 places, 1079 transitions, 19352 flow. Second operand 44 states and 2313 transitions. [2022-11-16 11:16:44,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 843 places, 1142 transitions, 23195 flow