./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-sre-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7191fb8c-2f1f-4c22-abee-4ae16be3d4a4/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7191fb8c-2f1f-4c22-abee-4ae16be3d4a4/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7191fb8c-2f1f-4c22-abee-4ae16be3d4a4/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7191fb8c-2f1f-4c22-abee-4ae16be3d4a4/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-sre-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7191fb8c-2f1f-4c22-abee-4ae16be3d4a4/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7191fb8c-2f1f-4c22-abee-4ae16be3d4a4/bin/uautomizer-Dbtcem3rbc --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 c361ebc03d879240d418527d643e8a7b3c7ac084ceb3e66857b21a687a1c7f90 --- 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-5e519f3 [2022-11-02 20:41:47,115 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:41:47,117 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:41:47,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:41:47,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:41:47,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:41:47,165 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:41:47,172 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:41:47,174 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:41:47,182 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:41:47,183 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:41:47,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:41:47,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:41:47,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:41:47,189 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:41:47,191 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:41:47,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:41:47,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:41:47,196 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:41:47,200 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:41:47,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:41:47,207 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:41:47,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:41:47,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:41:47,217 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:41:47,222 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:41:47,223 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:41:47,224 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:41:47,226 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:41:47,227 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:41:47,228 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:41:47,229 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:41:47,230 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:41:47,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:41:47,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:41:47,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:41:47,235 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:41:47,235 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:41:47,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:41:47,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:41:47,237 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:41:47,239 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7191fb8c-2f1f-4c22-abee-4ae16be3d4a4/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:41:47,277 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:41:47,281 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:41:47,282 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:41:47,282 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:41:47,283 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:41:47,283 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:41:47,284 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:41:47,284 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:41:47,284 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:41:47,285 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:41:47,286 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:41:47,286 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:41:47,286 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:41:47,286 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:41:47,287 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:41:47,287 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:41:47,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:41:47,287 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:41:47,288 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:41:47,288 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:41:47,288 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:41:47,288 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:41:47,289 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:41:47,289 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:41:47,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:41:47,289 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:41:47,289 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:41:47,290 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:41:47,290 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:41:47,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:41:47,290 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:41:47,291 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:41:47,291 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:41:47,291 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_7191fb8c-2f1f-4c22-abee-4ae16be3d4a4/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7191fb8c-2f1f-4c22-abee-4ae16be3d4a4/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c361ebc03d879240d418527d643e8a7b3c7ac084ceb3e66857b21a687a1c7f90 [2022-11-02 20:41:47,590 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:41:47,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:41:47,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:41:47,625 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:41:47,626 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:41:47,628 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7191fb8c-2f1f-4c22-abee-4ae16be3d4a4/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/chl-sre-symm.wvr.c [2022-11-02 20:41:47,701 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7191fb8c-2f1f-4c22-abee-4ae16be3d4a4/bin/uautomizer-Dbtcem3rbc/data/65ea39789/d9e65acb34b242af92f698bac2358b16/FLAGba15987db [2022-11-02 20:41:48,227 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:41:48,228 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7191fb8c-2f1f-4c22-abee-4ae16be3d4a4/sv-benchmarks/c/weaver/chl-sre-symm.wvr.c [2022-11-02 20:41:48,235 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7191fb8c-2f1f-4c22-abee-4ae16be3d4a4/bin/uautomizer-Dbtcem3rbc/data/65ea39789/d9e65acb34b242af92f698bac2358b16/FLAGba15987db [2022-11-02 20:41:48,581 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7191fb8c-2f1f-4c22-abee-4ae16be3d4a4/bin/uautomizer-Dbtcem3rbc/data/65ea39789/d9e65acb34b242af92f698bac2358b16 [2022-11-02 20:41:48,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:41:48,588 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:41:48,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:41:48,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:41:48,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:41:48,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:41:48" (1/1) ... [2022-11-02 20:41:48,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73e6611c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:48, skipping insertion in model container [2022-11-02 20:41:48,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:41:48" (1/1) ... [2022-11-02 20:41:48,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:41:48,627 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:41:48,818 WARN L230 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_7191fb8c-2f1f-4c22-abee-4ae16be3d4a4/sv-benchmarks/c/weaver/chl-sre-symm.wvr.c[2133,2146] [2022-11-02 20:41:48,821 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:41:48,829 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:41:48,852 WARN L230 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_7191fb8c-2f1f-4c22-abee-4ae16be3d4a4/sv-benchmarks/c/weaver/chl-sre-symm.wvr.c[2133,2146] [2022-11-02 20:41:48,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:41:48,880 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:41:48,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:48 WrapperNode [2022-11-02 20:41:48,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:41:48,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:41:48,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:41:48,883 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:41:48,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:48" (1/1) ... [2022-11-02 20:41:48,911 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:48" (1/1) ... [2022-11-02 20:41:48,939 INFO L138 Inliner]: procedures = 21, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 60 [2022-11-02 20:41:48,940 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:41:48,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:41:48,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:41:48,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:41:48,951 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:48" (1/1) ... [2022-11-02 20:41:48,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:48" (1/1) ... [2022-11-02 20:41:48,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:48" (1/1) ... [2022-11-02 20:41:48,956 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:48" (1/1) ... [2022-11-02 20:41:48,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:48" (1/1) ... [2022-11-02 20:41:48,964 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:48" (1/1) ... [2022-11-02 20:41:48,965 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:48" (1/1) ... [2022-11-02 20:41:48,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:48" (1/1) ... [2022-11-02 20:41:48,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:41:48,972 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:41:48,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:41:48,973 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:41:48,974 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:48" (1/1) ... [2022-11-02 20:41:48,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:41:48,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7191fb8c-2f1f-4c22-abee-4ae16be3d4a4/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:41:49,008 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7191fb8c-2f1f-4c22-abee-4ae16be3d4a4/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:41:49,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7191fb8c-2f1f-4c22-abee-4ae16be3d4a4/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:41:49,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:41:49,066 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 20:41:49,066 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 20:41:49,066 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 20:41:49,067 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 20:41:49,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:41:49,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:41:49,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:41:49,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:41:49,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:41:49,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:41:49,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:41:49,069 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:41:49,178 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:41:49,180 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:41:49,355 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:41:49,382 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:41:49,382 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:41:49,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:41:49 BoogieIcfgContainer [2022-11-02 20:41:49,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:41:49,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:41:49,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:41:49,412 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:41:49,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:41:48" (1/3) ... [2022-11-02 20:41:49,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c8f1157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:41:49, skipping insertion in model container [2022-11-02 20:41:49,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:48" (2/3) ... [2022-11-02 20:41:49,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c8f1157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:41:49, skipping insertion in model container [2022-11-02 20:41:49,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:41:49" (3/3) ... [2022-11-02 20:41:49,415 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-sre-symm.wvr.c [2022-11-02 20:41:49,424 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:41:49,434 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:41:49,434 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:41:49,434 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:41:49,552 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 20:41:49,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 102 transitions, 220 flow [2022-11-02 20:41:49,711 INFO L130 PetriNetUnfolder]: 7/100 cut-off events. [2022-11-02 20:41:49,711 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:41:49,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 100 events. 7/100 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 74 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-11-02 20:41:49,715 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 102 transitions, 220 flow [2022-11-02 20:41:49,719 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 91 transitions, 194 flow [2022-11-02 20:41:49,729 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:41:49,742 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;@c069af6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:41:49,742 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-02 20:41:49,789 INFO L130 PetriNetUnfolder]: 7/90 cut-off events. [2022-11-02 20:41:49,789 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:41:49,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:49,791 INFO L208 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] [2022-11-02 20:41:49,792 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:41:49,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:49,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1122200234, now seen corresponding path program 1 times [2022-11-02 20:41:49,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:49,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610001111] [2022-11-02 20:41:49,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:49,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:50,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:50,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:50,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:50,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610001111] [2022-11-02 20:41:50,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610001111] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:50,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:50,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:41:50,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163511341] [2022-11-02 20:41:50,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:50,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:41:50,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:50,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:41:50,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:41:50,806 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 102 [2022-11-02 20:41:50,811 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 91 transitions, 194 flow. Second operand has 8 states, 8 states have (on average 72.0) internal successors, (576), 8 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:50,811 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:50,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 102 [2022-11-02 20:41:50,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:51,145 INFO L130 PetriNetUnfolder]: 55/297 cut-off events. [2022-11-02 20:41:51,145 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-11-02 20:41:51,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 297 events. 55/297 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1135 event pairs, 11 based on Foata normal form. 9/289 useless extension candidates. Maximal degree in co-relation 265. Up to 44 conditions per place. [2022-11-02 20:41:51,150 INFO L137 encePairwiseOnDemand]: 86/102 looper letters, 52 selfloop transitions, 10 changer transitions 34/155 dead transitions. [2022-11-02 20:41:51,150 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 155 transitions, 541 flow [2022-11-02 20:41:51,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:41:51,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-02 20:41:51,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1141 transitions. [2022-11-02 20:41:51,171 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7457516339869281 [2022-11-02 20:41:51,172 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1141 transitions. [2022-11-02 20:41:51,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1141 transitions. [2022-11-02 20:41:51,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:51,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1141 transitions. [2022-11-02 20:41:51,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 76.06666666666666) internal successors, (1141), 15 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:51,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 102.0) internal successors, (1632), 16 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:51,195 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 102.0) internal successors, (1632), 16 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:51,197 INFO L175 Difference]: Start difference. First operand has 91 places, 91 transitions, 194 flow. Second operand 15 states and 1141 transitions. [2022-11-02 20:41:51,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 155 transitions, 541 flow [2022-11-02 20:41:51,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 155 transitions, 515 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 20:41:51,206 INFO L231 Difference]: Finished difference. Result has 111 places, 93 transitions, 253 flow [2022-11-02 20:41:51,208 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=253, PETRI_PLACES=111, PETRI_TRANSITIONS=93} [2022-11-02 20:41:51,211 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 20 predicate places. [2022-11-02 20:41:51,212 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 93 transitions, 253 flow [2022-11-02 20:41:51,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.0) internal successors, (576), 8 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:51,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:51,213 INFO L208 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] [2022-11-02 20:41:51,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:41:51,213 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:41:51,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:51,214 INFO L85 PathProgramCache]: Analyzing trace with hash -569889743, now seen corresponding path program 1 times [2022-11-02 20:41:51,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:51,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068067574] [2022-11-02 20:41:51,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:51,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:51,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:51,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:51,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068067574] [2022-11-02 20:41:51,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068067574] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:51,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:51,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:41:51,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572059400] [2022-11-02 20:41:51,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:51,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:41:51,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:51,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:41:51,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:51,372 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 102 [2022-11-02 20:41:51,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 93 transitions, 253 flow. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:51,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:51,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 102 [2022-11-02 20:41:51,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:51,542 INFO L130 PetriNetUnfolder]: 41/342 cut-off events. [2022-11-02 20:41:51,550 INFO L131 PetriNetUnfolder]: For 104/106 co-relation queries the response was YES. [2022-11-02 20:41:51,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 587 conditions, 342 events. 41/342 cut-off events. For 104/106 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1550 event pairs, 19 based on Foata normal form. 1/311 useless extension candidates. Maximal degree in co-relation 562. Up to 46 conditions per place. [2022-11-02 20:41:51,556 INFO L137 encePairwiseOnDemand]: 98/102 looper letters, 20 selfloop transitions, 2 changer transitions 3/102 dead transitions. [2022-11-02 20:41:51,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 102 transitions, 324 flow [2022-11-02 20:41:51,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:41:51,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:41:51,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2022-11-02 20:41:51,559 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8921568627450981 [2022-11-02 20:41:51,559 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2022-11-02 20:41:51,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2022-11-02 20:41:51,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:51,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2022-11-02 20:41:51,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:51,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:51,563 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:51,563 INFO L175 Difference]: Start difference. First operand has 111 places, 93 transitions, 253 flow. Second operand 3 states and 273 transitions. [2022-11-02 20:41:51,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 102 transitions, 324 flow [2022-11-02 20:41:51,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 102 transitions, 313 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-11-02 20:41:51,570 INFO L231 Difference]: Finished difference. Result has 99 places, 93 transitions, 252 flow [2022-11-02 20:41:51,570 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=99, PETRI_TRANSITIONS=93} [2022-11-02 20:41:51,571 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 8 predicate places. [2022-11-02 20:41:51,571 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 93 transitions, 252 flow [2022-11-02 20:41:51,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:51,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:51,572 INFO L208 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] [2022-11-02 20:41:51,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:41:51,573 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:41:51,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:51,574 INFO L85 PathProgramCache]: Analyzing trace with hash -468819727, now seen corresponding path program 1 times [2022-11-02 20:41:51,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:51,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819298323] [2022-11-02 20:41:51,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:51,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:51,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:51,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:51,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:51,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819298323] [2022-11-02 20:41:51,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819298323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:51,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:51,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:41:51,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780666491] [2022-11-02 20:41:51,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:51,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:41:51,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:51,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:41:51,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:51,718 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 102 [2022-11-02 20:41:51,720 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 93 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:51,720 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:51,720 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 102 [2022-11-02 20:41:51,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:51,798 INFO L130 PetriNetUnfolder]: 26/184 cut-off events. [2022-11-02 20:41:51,798 INFO L131 PetriNetUnfolder]: For 65/66 co-relation queries the response was YES. [2022-11-02 20:41:51,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 184 events. 26/184 cut-off events. For 65/66 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 538 event pairs, 13 based on Foata normal form. 7/173 useless extension candidates. Maximal degree in co-relation 287. Up to 39 conditions per place. [2022-11-02 20:41:51,803 INFO L137 encePairwiseOnDemand]: 98/102 looper letters, 15 selfloop transitions, 2 changer transitions 9/93 dead transitions. [2022-11-02 20:41:51,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 93 transitions, 288 flow [2022-11-02 20:41:51,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:41:51,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:41:51,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 268 transitions. [2022-11-02 20:41:51,806 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8758169934640523 [2022-11-02 20:41:51,808 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 268 transitions. [2022-11-02 20:41:51,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 268 transitions. [2022-11-02 20:41:51,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:51,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 268 transitions. [2022-11-02 20:41:51,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:51,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:51,810 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:51,811 INFO L175 Difference]: Start difference. First operand has 99 places, 93 transitions, 252 flow. Second operand 3 states and 268 transitions. [2022-11-02 20:41:51,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 93 transitions, 288 flow [2022-11-02 20:41:51,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 93 transitions, 278 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-11-02 20:41:51,825 INFO L231 Difference]: Finished difference. Result has 99 places, 83 transitions, 204 flow [2022-11-02 20:41:51,826 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=99, PETRI_TRANSITIONS=83} [2022-11-02 20:41:51,828 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 8 predicate places. [2022-11-02 20:41:51,828 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 83 transitions, 204 flow [2022-11-02 20:41:51,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:51,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:51,829 INFO L208 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] [2022-11-02 20:41:51,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:41:51,830 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:41:51,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:51,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1194239646, now seen corresponding path program 1 times [2022-11-02 20:41:51,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:51,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929227787] [2022-11-02 20:41:51,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:51,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:51,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:52,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:52,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:52,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929227787] [2022-11-02 20:41:52,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929227787] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:52,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:52,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:41:52,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943960631] [2022-11-02 20:41:52,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:52,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:41:52,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:52,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:41:52,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:41:52,237 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-11-02 20:41:52,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 83 transitions, 204 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:52,239 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:52,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-11-02 20:41:52,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:52,760 INFO L130 PetriNetUnfolder]: 96/368 cut-off events. [2022-11-02 20:41:52,761 INFO L131 PetriNetUnfolder]: For 155/157 co-relation queries the response was YES. [2022-11-02 20:41:52,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 763 conditions, 368 events. 96/368 cut-off events. For 155/157 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1600 event pairs, 35 based on Foata normal form. 1/360 useless extension candidates. Maximal degree in co-relation 693. Up to 112 conditions per place. [2022-11-02 20:41:52,763 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 75 selfloop transitions, 5 changer transitions 34/167 dead transitions. [2022-11-02 20:41:52,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 167 transitions, 697 flow [2022-11-02 20:41:52,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-02 20:41:52,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-02 20:41:52,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1627 transitions. [2022-11-02 20:41:52,769 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6646241830065359 [2022-11-02 20:41:52,769 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1627 transitions. [2022-11-02 20:41:52,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1627 transitions. [2022-11-02 20:41:52,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:52,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1627 transitions. [2022-11-02 20:41:52,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 67.79166666666667) internal successors, (1627), 24 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:52,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:52,782 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:52,784 INFO L175 Difference]: Start difference. First operand has 99 places, 83 transitions, 204 flow. Second operand 24 states and 1627 transitions. [2022-11-02 20:41:52,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 167 transitions, 697 flow [2022-11-02 20:41:52,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 167 transitions, 643 flow, removed 22 selfloop flow, removed 5 redundant places. [2022-11-02 20:41:52,791 INFO L231 Difference]: Finished difference. Result has 132 places, 87 transitions, 283 flow [2022-11-02 20:41:52,791 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=283, PETRI_PLACES=132, PETRI_TRANSITIONS=87} [2022-11-02 20:41:52,793 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 41 predicate places. [2022-11-02 20:41:52,794 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 87 transitions, 283 flow [2022-11-02 20:41:52,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:52,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:52,799 INFO L208 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] [2022-11-02 20:41:52,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:41:52,800 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:41:52,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:52,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1208604884, now seen corresponding path program 1 times [2022-11-02 20:41:52,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:52,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189509002] [2022-11-02 20:41:52,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:52,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:52,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:52,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:52,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:52,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189509002] [2022-11-02 20:41:52,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189509002] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:52,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:52,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:41:52,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723524492] [2022-11-02 20:41:52,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:52,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:41:52,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:52,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:41:52,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:41:52,973 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 102 [2022-11-02 20:41:52,973 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 87 transitions, 283 flow. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:52,973 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:52,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 102 [2022-11-02 20:41:52,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:53,077 INFO L130 PetriNetUnfolder]: 43/324 cut-off events. [2022-11-02 20:41:53,077 INFO L131 PetriNetUnfolder]: For 732/736 co-relation queries the response was YES. [2022-11-02 20:41:53,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 870 conditions, 324 events. 43/324 cut-off events. For 732/736 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1434 event pairs, 29 based on Foata normal form. 4/310 useless extension candidates. Maximal degree in co-relation 794. Up to 36 conditions per place. [2022-11-02 20:41:53,081 INFO L137 encePairwiseOnDemand]: 97/102 looper letters, 21 selfloop transitions, 4 changer transitions 0/96 dead transitions. [2022-11-02 20:41:53,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 96 transitions, 359 flow [2022-11-02 20:41:53,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:41:53,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-02 20:41:53,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 354 transitions. [2022-11-02 20:41:53,083 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8676470588235294 [2022-11-02 20:41:53,083 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 354 transitions. [2022-11-02 20:41:53,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 354 transitions. [2022-11-02 20:41:53,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:53,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 354 transitions. [2022-11-02 20:41:53,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:53,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:53,086 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:53,086 INFO L175 Difference]: Start difference. First operand has 132 places, 87 transitions, 283 flow. Second operand 4 states and 354 transitions. [2022-11-02 20:41:53,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 96 transitions, 359 flow [2022-11-02 20:41:53,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 96 transitions, 336 flow, removed 11 selfloop flow, removed 11 redundant places. [2022-11-02 20:41:53,096 INFO L231 Difference]: Finished difference. Result has 109 places, 89 transitions, 284 flow [2022-11-02 20:41:53,096 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=284, PETRI_PLACES=109, PETRI_TRANSITIONS=89} [2022-11-02 20:41:53,099 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 18 predicate places. [2022-11-02 20:41:53,100 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 89 transitions, 284 flow [2022-11-02 20:41:53,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:53,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:53,100 INFO L208 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] [2022-11-02 20:41:53,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:41:53,101 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:41:53,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:53,104 INFO L85 PathProgramCache]: Analyzing trace with hash 939675466, now seen corresponding path program 1 times [2022-11-02 20:41:53,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:53,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142909048] [2022-11-02 20:41:53,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:53,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:53,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:53,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:53,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:53,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142909048] [2022-11-02 20:41:53,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142909048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:53,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:53,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:41:53,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581737433] [2022-11-02 20:41:53,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:53,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:41:53,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:53,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:41:53,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:41:53,258 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 102 [2022-11-02 20:41:53,259 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 89 transitions, 284 flow. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:53,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:53,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 102 [2022-11-02 20:41:53,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:53,359 INFO L130 PetriNetUnfolder]: 42/346 cut-off events. [2022-11-02 20:41:53,359 INFO L131 PetriNetUnfolder]: For 373/385 co-relation queries the response was YES. [2022-11-02 20:41:53,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 770 conditions, 346 events. 42/346 cut-off events. For 373/385 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1638 event pairs, 32 based on Foata normal form. 7/337 useless extension candidates. Maximal degree in co-relation 453. Up to 34 conditions per place. [2022-11-02 20:41:53,364 INFO L137 encePairwiseOnDemand]: 94/102 looper letters, 20 selfloop transitions, 7 changer transitions 0/98 dead transitions. [2022-11-02 20:41:53,364 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 98 transitions, 370 flow [2022-11-02 20:41:53,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:41:53,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-02 20:41:53,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 354 transitions. [2022-11-02 20:41:53,366 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8676470588235294 [2022-11-02 20:41:53,366 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 354 transitions. [2022-11-02 20:41:53,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 354 transitions. [2022-11-02 20:41:53,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:53,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 354 transitions. [2022-11-02 20:41:53,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:53,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:53,369 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:53,369 INFO L175 Difference]: Start difference. First operand has 109 places, 89 transitions, 284 flow. Second operand 4 states and 354 transitions. [2022-11-02 20:41:53,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 98 transitions, 370 flow [2022-11-02 20:41:53,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 98 transitions, 368 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:41:53,375 INFO L231 Difference]: Finished difference. Result has 113 places, 91 transitions, 318 flow [2022-11-02 20:41:53,375 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=318, PETRI_PLACES=113, PETRI_TRANSITIONS=91} [2022-11-02 20:41:53,377 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 22 predicate places. [2022-11-02 20:41:53,378 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 91 transitions, 318 flow [2022-11-02 20:41:53,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:53,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:53,379 INFO L208 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] [2022-11-02 20:41:53,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:41:53,380 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:41:53,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:53,380 INFO L85 PathProgramCache]: Analyzing trace with hash 994240294, now seen corresponding path program 2 times [2022-11-02 20:41:53,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:53,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596828551] [2022-11-02 20:41:53,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:53,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:53,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:53,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:53,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:53,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596828551] [2022-11-02 20:41:53,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596828551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:53,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:53,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:41:53,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194474802] [2022-11-02 20:41:53,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:53,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:41:53,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:53,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:41:53,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:41:53,534 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 102 [2022-11-02 20:41:53,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 91 transitions, 318 flow. Second operand has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:53,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:53,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 102 [2022-11-02 20:41:53,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:53,627 INFO L130 PetriNetUnfolder]: 38/296 cut-off events. [2022-11-02 20:41:53,628 INFO L131 PetriNetUnfolder]: For 403/407 co-relation queries the response was YES. [2022-11-02 20:41:53,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 723 conditions, 296 events. 38/296 cut-off events. For 403/407 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1237 event pairs, 29 based on Foata normal form. 3/290 useless extension candidates. Maximal degree in co-relation 585. Up to 31 conditions per place. [2022-11-02 20:41:53,630 INFO L137 encePairwiseOnDemand]: 95/102 looper letters, 21 selfloop transitions, 8 changer transitions 0/100 dead transitions. [2022-11-02 20:41:53,630 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 100 transitions, 406 flow [2022-11-02 20:41:53,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:41:53,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 20:41:53,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 438 transitions. [2022-11-02 20:41:53,632 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8588235294117647 [2022-11-02 20:41:53,632 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 438 transitions. [2022-11-02 20:41:53,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 438 transitions. [2022-11-02 20:41:53,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:53,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 438 transitions. [2022-11-02 20:41:53,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.6) internal successors, (438), 5 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:53,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:53,636 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:53,636 INFO L175 Difference]: Start difference. First operand has 113 places, 91 transitions, 318 flow. Second operand 5 states and 438 transitions. [2022-11-02 20:41:53,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 100 transitions, 406 flow [2022-11-02 20:41:53,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 100 transitions, 400 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:41:53,641 INFO L231 Difference]: Finished difference. Result has 117 places, 93 transitions, 350 flow [2022-11-02 20:41:53,641 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=350, PETRI_PLACES=117, PETRI_TRANSITIONS=93} [2022-11-02 20:41:53,642 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 26 predicate places. [2022-11-02 20:41:53,642 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 93 transitions, 350 flow [2022-11-02 20:41:53,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:53,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:53,643 INFO L208 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] [2022-11-02 20:41:53,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:41:53,643 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:41:53,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:53,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1175916198, now seen corresponding path program 2 times [2022-11-02 20:41:53,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:53,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123332297] [2022-11-02 20:41:53,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:53,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:53,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:53,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:53,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:53,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123332297] [2022-11-02 20:41:53,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123332297] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:53,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:53,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:41:53,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978511353] [2022-11-02 20:41:53,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:53,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:41:53,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:53,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:41:53,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:41:53,771 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 102 [2022-11-02 20:41:53,772 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 93 transitions, 350 flow. Second operand has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:53,772 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:53,772 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 102 [2022-11-02 20:41:53,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:53,871 INFO L130 PetriNetUnfolder]: 26/240 cut-off events. [2022-11-02 20:41:53,871 INFO L131 PetriNetUnfolder]: For 302/304 co-relation queries the response was YES. [2022-11-02 20:41:53,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 579 conditions, 240 events. 26/240 cut-off events. For 302/304 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 891 event pairs, 18 based on Foata normal form. 3/234 useless extension candidates. Maximal degree in co-relation 454. Up to 25 conditions per place. [2022-11-02 20:41:53,874 INFO L137 encePairwiseOnDemand]: 97/102 looper letters, 23 selfloop transitions, 6 changer transitions 0/100 dead transitions. [2022-11-02 20:41:53,874 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 100 transitions, 436 flow [2022-11-02 20:41:53,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:41:53,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 20:41:53,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 436 transitions. [2022-11-02 20:41:53,876 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8549019607843137 [2022-11-02 20:41:53,876 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 436 transitions. [2022-11-02 20:41:53,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 436 transitions. [2022-11-02 20:41:53,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:53,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 436 transitions. [2022-11-02 20:41:53,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.2) internal successors, (436), 5 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:53,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:53,879 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:53,879 INFO L175 Difference]: Start difference. First operand has 117 places, 93 transitions, 350 flow. Second operand 5 states and 436 transitions. [2022-11-02 20:41:53,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 100 transitions, 436 flow [2022-11-02 20:41:53,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 100 transitions, 422 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-02 20:41:53,884 INFO L231 Difference]: Finished difference. Result has 121 places, 95 transitions, 372 flow [2022-11-02 20:41:53,885 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=372, PETRI_PLACES=121, PETRI_TRANSITIONS=95} [2022-11-02 20:41:53,885 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 30 predicate places. [2022-11-02 20:41:53,886 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 95 transitions, 372 flow [2022-11-02 20:41:53,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:53,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:53,886 INFO L208 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] [2022-11-02 20:41:53,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:41:53,887 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:41:53,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:53,887 INFO L85 PathProgramCache]: Analyzing trace with hash 36403416, now seen corresponding path program 2 times [2022-11-02 20:41:53,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:53,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692688474] [2022-11-02 20:41:53,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:53,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:53,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:54,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:54,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:54,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692688474] [2022-11-02 20:41:54,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692688474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:54,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:54,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:41:54,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530226234] [2022-11-02 20:41:54,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:54,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:41:54,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:54,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:41:54,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:41:54,135 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-11-02 20:41:54,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 95 transitions, 372 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:54,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:54,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-11-02 20:41:54,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:54,671 INFO L130 PetriNetUnfolder]: 80/374 cut-off events. [2022-11-02 20:41:54,671 INFO L131 PetriNetUnfolder]: For 532/536 co-relation queries the response was YES. [2022-11-02 20:41:54,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1115 conditions, 374 events. 80/374 cut-off events. For 532/536 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1721 event pairs, 40 based on Foata normal form. 1/366 useless extension candidates. Maximal degree in co-relation 1023. Up to 125 conditions per place. [2022-11-02 20:41:54,675 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 70 selfloop transitions, 5 changer transitions 35/171 dead transitions. [2022-11-02 20:41:54,675 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 171 transitions, 992 flow [2022-11-02 20:41:54,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-02 20:41:54,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-02 20:41:54,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1619 transitions. [2022-11-02 20:41:54,681 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6613562091503268 [2022-11-02 20:41:54,681 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1619 transitions. [2022-11-02 20:41:54,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1619 transitions. [2022-11-02 20:41:54,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:54,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1619 transitions. [2022-11-02 20:41:54,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 67.45833333333333) internal successors, (1619), 24 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:54,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:54,693 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:54,693 INFO L175 Difference]: Start difference. First operand has 121 places, 95 transitions, 372 flow. Second operand 24 states and 1619 transitions. [2022-11-02 20:41:54,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 171 transitions, 992 flow [2022-11-02 20:41:54,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 171 transitions, 978 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-02 20:41:54,703 INFO L231 Difference]: Finished difference. Result has 164 places, 99 transitions, 467 flow [2022-11-02 20:41:54,704 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=467, PETRI_PLACES=164, PETRI_TRANSITIONS=99} [2022-11-02 20:41:54,705 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 73 predicate places. [2022-11-02 20:41:54,705 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 99 transitions, 467 flow [2022-11-02 20:41:54,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:54,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:54,706 INFO L208 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] [2022-11-02 20:41:54,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:41:54,706 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:41:54,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:54,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1957435108, now seen corresponding path program 3 times [2022-11-02 20:41:54,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:54,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515775747] [2022-11-02 20:41:54,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:54,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:54,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:54,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:54,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:54,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515775747] [2022-11-02 20:41:54,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515775747] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:54,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:54,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:41:54,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851322968] [2022-11-02 20:41:54,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:54,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:41:54,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:54,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:41:54,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:41:54,990 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-11-02 20:41:54,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 99 transitions, 467 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:54,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:54,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-11-02 20:41:54,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:55,505 INFO L130 PetriNetUnfolder]: 92/417 cut-off events. [2022-11-02 20:41:55,505 INFO L131 PetriNetUnfolder]: For 2019/2024 co-relation queries the response was YES. [2022-11-02 20:41:55,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1699 conditions, 417 events. 92/417 cut-off events. For 2019/2024 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2069 event pairs, 44 based on Foata normal form. 1/412 useless extension candidates. Maximal degree in co-relation 1601. Up to 161 conditions per place. [2022-11-02 20:41:55,511 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 55 selfloop transitions, 12 changer transitions 28/156 dead transitions. [2022-11-02 20:41:55,511 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 156 transitions, 1205 flow [2022-11-02 20:41:55,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:41:55,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-02 20:41:55,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1478 transitions. [2022-11-02 20:41:55,516 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6586452762923352 [2022-11-02 20:41:55,516 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1478 transitions. [2022-11-02 20:41:55,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1478 transitions. [2022-11-02 20:41:55,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:55,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1478 transitions. [2022-11-02 20:41:55,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 67.18181818181819) internal successors, (1478), 22 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:55,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:55,526 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:55,526 INFO L175 Difference]: Start difference. First operand has 164 places, 99 transitions, 467 flow. Second operand 22 states and 1478 transitions. [2022-11-02 20:41:55,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 156 transitions, 1205 flow [2022-11-02 20:41:55,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 156 transitions, 966 flow, removed 118 selfloop flow, removed 12 redundant places. [2022-11-02 20:41:55,545 INFO L231 Difference]: Finished difference. Result has 170 places, 109 transitions, 556 flow [2022-11-02 20:41:55,546 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=556, PETRI_PLACES=170, PETRI_TRANSITIONS=109} [2022-11-02 20:41:55,546 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 79 predicate places. [2022-11-02 20:41:55,547 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 109 transitions, 556 flow [2022-11-02 20:41:55,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:55,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:55,548 INFO L208 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] [2022-11-02 20:41:55,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:41:55,548 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:41:55,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:55,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1949887706, now seen corresponding path program 4 times [2022-11-02 20:41:55,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:55,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325582714] [2022-11-02 20:41:55,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:55,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:55,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:55,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:55,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325582714] [2022-11-02 20:41:55,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325582714] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:55,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:55,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:41:55,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127481659] [2022-11-02 20:41:55,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:55,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:41:55,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:55,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:41:55,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:41:55,806 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-11-02 20:41:55,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 109 transitions, 556 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:55,808 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:55,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-11-02 20:41:55,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:56,307 INFO L130 PetriNetUnfolder]: 108/470 cut-off events. [2022-11-02 20:41:56,307 INFO L131 PetriNetUnfolder]: For 2060/2067 co-relation queries the response was YES. [2022-11-02 20:41:56,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1909 conditions, 470 events. 108/470 cut-off events. For 2060/2067 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2462 event pairs, 54 based on Foata normal form. 2/464 useless extension candidates. Maximal degree in co-relation 1808. Up to 175 conditions per place. [2022-11-02 20:41:56,314 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 58 selfloop transitions, 17 changer transitions 28/164 dead transitions. [2022-11-02 20:41:56,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 164 transitions, 1307 flow [2022-11-02 20:41:56,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:41:56,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-02 20:41:56,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1417 transitions. [2022-11-02 20:41:56,319 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.661531279178338 [2022-11-02 20:41:56,319 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1417 transitions. [2022-11-02 20:41:56,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1417 transitions. [2022-11-02 20:41:56,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:56,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1417 transitions. [2022-11-02 20:41:56,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 67.47619047619048) internal successors, (1417), 21 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:56,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:56,328 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:56,328 INFO L175 Difference]: Start difference. First operand has 170 places, 109 transitions, 556 flow. Second operand 21 states and 1417 transitions. [2022-11-02 20:41:56,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 164 transitions, 1307 flow [2022-11-02 20:41:56,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 164 transitions, 1161 flow, removed 73 selfloop flow, removed 15 redundant places. [2022-11-02 20:41:56,349 INFO L231 Difference]: Finished difference. Result has 178 places, 119 transitions, 722 flow [2022-11-02 20:41:56,349 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=722, PETRI_PLACES=178, PETRI_TRANSITIONS=119} [2022-11-02 20:41:56,350 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 87 predicate places. [2022-11-02 20:41:56,350 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 119 transitions, 722 flow [2022-11-02 20:41:56,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:56,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:56,351 INFO L208 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] [2022-11-02 20:41:56,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:41:56,351 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:41:56,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:56,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1961412494, now seen corresponding path program 5 times [2022-11-02 20:41:56,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:56,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588967986] [2022-11-02 20:41:56,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:56,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:56,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:56,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:56,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588967986] [2022-11-02 20:41:56,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588967986] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:56,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:56,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:41:56,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423682549] [2022-11-02 20:41:56,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:56,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:41:56,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:56,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:41:56,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:41:56,590 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-11-02 20:41:56,591 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 119 transitions, 722 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:56,591 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:56,592 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-11-02 20:41:56,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:57,014 INFO L130 PetriNetUnfolder]: 104/480 cut-off events. [2022-11-02 20:41:57,014 INFO L131 PetriNetUnfolder]: For 2532/2548 co-relation queries the response was YES. [2022-11-02 20:41:57,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2047 conditions, 480 events. 104/480 cut-off events. For 2532/2548 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2549 event pairs, 59 based on Foata normal form. 1/474 useless extension candidates. Maximal degree in co-relation 1943. Up to 163 conditions per place. [2022-11-02 20:41:57,021 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 57 selfloop transitions, 23 changer transitions 28/169 dead transitions. [2022-11-02 20:41:57,022 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 169 transitions, 1535 flow [2022-11-02 20:41:57,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:41:57,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-02 20:41:57,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1351 transitions. [2022-11-02 20:41:57,025 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6622549019607843 [2022-11-02 20:41:57,025 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1351 transitions. [2022-11-02 20:41:57,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1351 transitions. [2022-11-02 20:41:57,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:57,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1351 transitions. [2022-11-02 20:41:57,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 67.55) internal successors, (1351), 20 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:57,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 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) [2022-11-02 20:41:57,033 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 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) [2022-11-02 20:41:57,034 INFO L175 Difference]: Start difference. First operand has 178 places, 119 transitions, 722 flow. Second operand 20 states and 1351 transitions. [2022-11-02 20:41:57,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 169 transitions, 1535 flow [2022-11-02 20:41:57,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 169 transitions, 1383 flow, removed 71 selfloop flow, removed 11 redundant places. [2022-11-02 20:41:57,052 INFO L231 Difference]: Finished difference. Result has 190 places, 127 transitions, 896 flow [2022-11-02 20:41:57,052 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=896, PETRI_PLACES=190, PETRI_TRANSITIONS=127} [2022-11-02 20:41:57,053 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 99 predicate places. [2022-11-02 20:41:57,053 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 127 transitions, 896 flow [2022-11-02 20:41:57,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:57,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:57,054 INFO L208 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] [2022-11-02 20:41:57,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:41:57,054 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:41:57,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:57,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1187457154, now seen corresponding path program 6 times [2022-11-02 20:41:57,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:57,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424296412] [2022-11-02 20:41:57,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:57,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:57,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:57,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:57,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:57,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424296412] [2022-11-02 20:41:57,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424296412] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:57,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:57,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:41:57,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668647773] [2022-11-02 20:41:57,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:57,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:41:57,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:57,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:41:57,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:41:57,303 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-11-02 20:41:57,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 127 transitions, 896 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:57,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:57,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-11-02 20:41:57,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:57,636 INFO L130 PetriNetUnfolder]: 97/458 cut-off events. [2022-11-02 20:41:57,636 INFO L131 PetriNetUnfolder]: For 2992/3014 co-relation queries the response was YES. [2022-11-02 20:41:57,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2098 conditions, 458 events. 97/458 cut-off events. For 2992/3014 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2447 event pairs, 47 based on Foata normal form. 6/455 useless extension candidates. Maximal degree in co-relation 1987. Up to 185 conditions per place. [2022-11-02 20:41:57,644 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 58 selfloop transitions, 21 changer transitions 22/162 dead transitions. [2022-11-02 20:41:57,644 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 162 transitions, 1561 flow [2022-11-02 20:41:57,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 20:41:57,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-02 20:41:57,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1084 transitions. [2022-11-02 20:41:57,648 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6642156862745098 [2022-11-02 20:41:57,648 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1084 transitions. [2022-11-02 20:41:57,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1084 transitions. [2022-11-02 20:41:57,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:57,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1084 transitions. [2022-11-02 20:41:57,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 67.75) internal successors, (1084), 16 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:57,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 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) [2022-11-02 20:41:57,655 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 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) [2022-11-02 20:41:57,655 INFO L175 Difference]: Start difference. First operand has 190 places, 127 transitions, 896 flow. Second operand 16 states and 1084 transitions. [2022-11-02 20:41:57,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 162 transitions, 1561 flow [2022-11-02 20:41:57,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 162 transitions, 1412 flow, removed 64 selfloop flow, removed 10 redundant places. [2022-11-02 20:41:57,678 INFO L231 Difference]: Finished difference. Result has 192 places, 132 transitions, 964 flow [2022-11-02 20:41:57,678 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=964, PETRI_PLACES=192, PETRI_TRANSITIONS=132} [2022-11-02 20:41:57,679 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 101 predicate places. [2022-11-02 20:41:57,680 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 132 transitions, 964 flow [2022-11-02 20:41:57,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:57,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:57,681 INFO L208 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] [2022-11-02 20:41:57,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:41:57,682 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:41:57,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:57,682 INFO L85 PathProgramCache]: Analyzing trace with hash 2127635054, now seen corresponding path program 7 times [2022-11-02 20:41:57,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:57,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974889172] [2022-11-02 20:41:57,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:57,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:57,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:57,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:57,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:57,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974889172] [2022-11-02 20:41:57,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974889172] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:57,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:57,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:41:57,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248742637] [2022-11-02 20:41:57,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:57,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:41:57,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:57,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:41:57,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:41:57,947 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-11-02 20:41:57,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 132 transitions, 964 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:57,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:57,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-11-02 20:41:57,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:58,359 INFO L130 PetriNetUnfolder]: 96/455 cut-off events. [2022-11-02 20:41:58,359 INFO L131 PetriNetUnfolder]: For 2739/2764 co-relation queries the response was YES. [2022-11-02 20:41:58,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2056 conditions, 455 events. 96/455 cut-off events. For 2739/2764 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2415 event pairs, 49 based on Foata normal form. 4/450 useless extension candidates. Maximal degree in co-relation 1945. Up to 184 conditions per place. [2022-11-02 20:41:58,367 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 65 selfloop transitions, 24 changer transitions 30/180 dead transitions. [2022-11-02 20:41:58,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 180 transitions, 1848 flow [2022-11-02 20:41:58,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:41:58,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-02 20:41:58,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1347 transitions. [2022-11-02 20:41:58,373 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6602941176470588 [2022-11-02 20:41:58,373 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1347 transitions. [2022-11-02 20:41:58,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1347 transitions. [2022-11-02 20:41:58,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:58,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1347 transitions. [2022-11-02 20:41:58,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 67.35) internal successors, (1347), 20 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:58,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 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) [2022-11-02 20:41:58,381 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 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) [2022-11-02 20:41:58,382 INFO L175 Difference]: Start difference. First operand has 192 places, 132 transitions, 964 flow. Second operand 20 states and 1347 transitions. [2022-11-02 20:41:58,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 180 transitions, 1848 flow [2022-11-02 20:41:58,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 180 transitions, 1674 flow, removed 45 selfloop flow, removed 12 redundant places. [2022-11-02 20:41:58,405 INFO L231 Difference]: Finished difference. Result has 207 places, 139 transitions, 1071 flow [2022-11-02 20:41:58,406 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1071, PETRI_PLACES=207, PETRI_TRANSITIONS=139} [2022-11-02 20:41:58,406 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 116 predicate places. [2022-11-02 20:41:58,407 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 139 transitions, 1071 flow [2022-11-02 20:41:58,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:58,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:58,408 INFO L208 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] [2022-11-02 20:41:58,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 20:41:58,408 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:41:58,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:58,409 INFO L85 PathProgramCache]: Analyzing trace with hash -754730848, now seen corresponding path program 8 times [2022-11-02 20:41:58,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:58,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346083565] [2022-11-02 20:41:58,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:58,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:58,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:58,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:58,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:58,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346083565] [2022-11-02 20:41:58,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346083565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:58,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:58,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:41:58,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621965275] [2022-11-02 20:41:58,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:58,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:41:58,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:58,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:41:58,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:41:58,668 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-11-02 20:41:58,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 139 transitions, 1071 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:58,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:58,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-11-02 20:41:58,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:59,034 INFO L130 PetriNetUnfolder]: 85/425 cut-off events. [2022-11-02 20:41:59,035 INFO L131 PetriNetUnfolder]: For 2716/2732 co-relation queries the response was YES. [2022-11-02 20:41:59,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1928 conditions, 425 events. 85/425 cut-off events. For 2716/2732 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2190 event pairs, 44 based on Foata normal form. 4/422 useless extension candidates. Maximal degree in co-relation 1811. Up to 170 conditions per place. [2022-11-02 20:41:59,043 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 59 selfloop transitions, 14 changer transitions 31/165 dead transitions. [2022-11-02 20:41:59,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 165 transitions, 1596 flow [2022-11-02 20:41:59,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:41:59,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:41:59,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1209 transitions. [2022-11-02 20:41:59,046 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6584967320261438 [2022-11-02 20:41:59,046 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1209 transitions. [2022-11-02 20:41:59,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1209 transitions. [2022-11-02 20:41:59,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:59,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1209 transitions. [2022-11-02 20:41:59,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.16666666666667) internal successors, (1209), 18 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:59,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:59,071 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:59,071 INFO L175 Difference]: Start difference. First operand has 207 places, 139 transitions, 1071 flow. Second operand 18 states and 1209 transitions. [2022-11-02 20:41:59,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 165 transitions, 1596 flow [2022-11-02 20:41:59,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 165 transitions, 1466 flow, removed 49 selfloop flow, removed 13 redundant places. [2022-11-02 20:41:59,094 INFO L231 Difference]: Finished difference. Result has 206 places, 124 transitions, 836 flow [2022-11-02 20:41:59,095 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=996, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=836, PETRI_PLACES=206, PETRI_TRANSITIONS=124} [2022-11-02 20:41:59,095 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 115 predicate places. [2022-11-02 20:41:59,095 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 124 transitions, 836 flow [2022-11-02 20:41:59,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:59,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:59,096 INFO L208 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] [2022-11-02 20:41:59,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 20:41:59,097 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:41:59,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:59,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1891682816, now seen corresponding path program 9 times [2022-11-02 20:41:59,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:59,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246307274] [2022-11-02 20:41:59,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:59,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:59,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:59,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:59,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:59,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246307274] [2022-11-02 20:41:59,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246307274] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:59,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:59,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:41:59,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134049702] [2022-11-02 20:41:59,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:59,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:41:59,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:59,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:41:59,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:41:59,339 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-11-02 20:41:59,339 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 124 transitions, 836 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:59,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:59,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-11-02 20:41:59,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:59,758 INFO L130 PetriNetUnfolder]: 87/420 cut-off events. [2022-11-02 20:41:59,758 INFO L131 PetriNetUnfolder]: For 2348/2365 co-relation queries the response was YES. [2022-11-02 20:41:59,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1892 conditions, 420 events. 87/420 cut-off events. For 2348/2365 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2128 event pairs, 48 based on Foata normal form. 3/415 useless extension candidates. Maximal degree in co-relation 1829. Up to 170 conditions per place. [2022-11-02 20:41:59,764 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 56 selfloop transitions, 22 changer transitions 21/160 dead transitions. [2022-11-02 20:41:59,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 160 transitions, 1516 flow [2022-11-02 20:41:59,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:41:59,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:41:59,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1215 transitions. [2022-11-02 20:41:59,768 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6617647058823529 [2022-11-02 20:41:59,768 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1215 transitions. [2022-11-02 20:41:59,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1215 transitions. [2022-11-02 20:41:59,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:59,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1215 transitions. [2022-11-02 20:41:59,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.5) internal successors, (1215), 18 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:59,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:59,774 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:59,775 INFO L175 Difference]: Start difference. First operand has 206 places, 124 transitions, 836 flow. Second operand 18 states and 1215 transitions. [2022-11-02 20:41:59,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 160 transitions, 1516 flow [2022-11-02 20:41:59,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 160 transitions, 1361 flow, removed 31 selfloop flow, removed 17 redundant places. [2022-11-02 20:41:59,793 INFO L231 Difference]: Finished difference. Result has 192 places, 133 transitions, 966 flow [2022-11-02 20:41:59,794 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=966, PETRI_PLACES=192, PETRI_TRANSITIONS=133} [2022-11-02 20:41:59,794 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 101 predicate places. [2022-11-02 20:41:59,795 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 133 transitions, 966 flow [2022-11-02 20:41:59,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:59,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:59,795 INFO L208 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] [2022-11-02 20:41:59,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 20:41:59,796 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:41:59,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:59,796 INFO L85 PathProgramCache]: Analyzing trace with hash 675019408, now seen corresponding path program 10 times [2022-11-02 20:41:59,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:59,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807982432] [2022-11-02 20:41:59,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:59,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:00,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:00,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:00,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807982432] [2022-11-02 20:42:00,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807982432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:00,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:00,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:42:00,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264837386] [2022-11-02 20:42:00,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:00,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:42:00,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:00,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:42:00,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:42:00,019 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-11-02 20:42:00,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 133 transitions, 966 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:00,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:00,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-11-02 20:42:00,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:00,431 INFO L130 PetriNetUnfolder]: 84/414 cut-off events. [2022-11-02 20:42:00,431 INFO L131 PetriNetUnfolder]: For 1890/1906 co-relation queries the response was YES. [2022-11-02 20:42:00,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1797 conditions, 414 events. 84/414 cut-off events. For 1890/1906 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2073 event pairs, 47 based on Foata normal form. 3/409 useless extension candidates. Maximal degree in co-relation 1737. Up to 170 conditions per place. [2022-11-02 20:42:00,437 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 57 selfloop transitions, 24 changer transitions 22/164 dead transitions. [2022-11-02 20:42:00,437 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 164 transitions, 1567 flow [2022-11-02 20:42:00,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:42:00,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-02 20:42:00,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1151 transitions. [2022-11-02 20:42:00,442 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6637831603229527 [2022-11-02 20:42:00,442 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1151 transitions. [2022-11-02 20:42:00,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1151 transitions. [2022-11-02 20:42:00,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:00,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1151 transitions. [2022-11-02 20:42:00,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.70588235294117) internal successors, (1151), 17 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:00,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:00,452 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:00,452 INFO L175 Difference]: Start difference. First operand has 192 places, 133 transitions, 966 flow. Second operand 17 states and 1151 transitions. [2022-11-02 20:42:00,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 164 transitions, 1567 flow [2022-11-02 20:42:00,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 164 transitions, 1496 flow, removed 30 selfloop flow, removed 5 redundant places. [2022-11-02 20:42:00,470 INFO L231 Difference]: Finished difference. Result has 204 places, 137 transitions, 1070 flow [2022-11-02 20:42:00,471 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=922, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1070, PETRI_PLACES=204, PETRI_TRANSITIONS=137} [2022-11-02 20:42:00,471 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 113 predicate places. [2022-11-02 20:42:00,471 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 137 transitions, 1070 flow [2022-11-02 20:42:00,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:00,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:00,472 INFO L208 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] [2022-11-02 20:42:00,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 20:42:00,472 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:42:00,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:00,473 INFO L85 PathProgramCache]: Analyzing trace with hash -402300568, now seen corresponding path program 11 times [2022-11-02 20:42:00,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:00,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083133107] [2022-11-02 20:42:00,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:00,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:00,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:00,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:00,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:00,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083133107] [2022-11-02 20:42:00,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083133107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:00,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:00,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:42:00,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287484524] [2022-11-02 20:42:00,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:00,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:42:00,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:00,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:42:00,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:42:00,717 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-11-02 20:42:00,717 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 137 transitions, 1070 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:00,718 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:00,718 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-11-02 20:42:00,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:01,101 INFO L130 PetriNetUnfolder]: 81/418 cut-off events. [2022-11-02 20:42:01,102 INFO L131 PetriNetUnfolder]: For 1910/1918 co-relation queries the response was YES. [2022-11-02 20:42:01,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1788 conditions, 418 events. 81/418 cut-off events. For 1910/1918 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2122 event pairs, 49 based on Foata normal form. 1/411 useless extension candidates. Maximal degree in co-relation 1722. Up to 170 conditions per place. [2022-11-02 20:42:01,107 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 57 selfloop transitions, 14 changer transitions 30/162 dead transitions. [2022-11-02 20:42:01,107 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 162 transitions, 1550 flow [2022-11-02 20:42:01,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:42:01,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-02 20:42:01,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1150 transitions. [2022-11-02 20:42:01,119 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6632064590542099 [2022-11-02 20:42:01,119 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1150 transitions. [2022-11-02 20:42:01,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1150 transitions. [2022-11-02 20:42:01,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:01,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1150 transitions. [2022-11-02 20:42:01,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.6470588235294) internal successors, (1150), 17 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:01,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:01,131 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:01,131 INFO L175 Difference]: Start difference. First operand has 204 places, 137 transitions, 1070 flow. Second operand 17 states and 1150 transitions. [2022-11-02 20:42:01,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 162 transitions, 1550 flow [2022-11-02 20:42:01,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 162 transitions, 1457 flow, removed 25 selfloop flow, removed 8 redundant places. [2022-11-02 20:42:01,151 INFO L231 Difference]: Finished difference. Result has 211 places, 128 transitions, 899 flow [2022-11-02 20:42:01,151 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=999, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=899, PETRI_PLACES=211, PETRI_TRANSITIONS=128} [2022-11-02 20:42:01,151 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 120 predicate places. [2022-11-02 20:42:01,152 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 128 transitions, 899 flow [2022-11-02 20:42:01,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:01,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:01,152 INFO L208 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] [2022-11-02 20:42:01,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 20:42:01,153 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:42:01,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:01,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1117603654, now seen corresponding path program 12 times [2022-11-02 20:42:01,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:01,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399120552] [2022-11-02 20:42:01,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:01,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:01,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:01,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:01,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:01,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399120552] [2022-11-02 20:42:01,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399120552] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:01,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:01,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:42:01,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310224961] [2022-11-02 20:42:01,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:01,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:42:01,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:01,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:42:01,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:42:01,373 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-11-02 20:42:01,374 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 128 transitions, 899 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:01,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:01,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-11-02 20:42:01,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:01,713 INFO L130 PetriNetUnfolder]: 71/371 cut-off events. [2022-11-02 20:42:01,713 INFO L131 PetriNetUnfolder]: For 1683/1699 co-relation queries the response was YES. [2022-11-02 20:42:01,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1529 conditions, 371 events. 71/371 cut-off events. For 1683/1699 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1729 event pairs, 44 based on Foata normal form. 3/367 useless extension candidates. Maximal degree in co-relation 1462. Up to 157 conditions per place. [2022-11-02 20:42:01,719 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 47 selfloop transitions, 3 changer transitions 33/144 dead transitions. [2022-11-02 20:42:01,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 144 transitions, 1213 flow [2022-11-02 20:42:01,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:42:01,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:42:01,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1205 transitions. [2022-11-02 20:42:01,725 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.656318082788671 [2022-11-02 20:42:01,726 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1205 transitions. [2022-11-02 20:42:01,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1205 transitions. [2022-11-02 20:42:01,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:01,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1205 transitions. [2022-11-02 20:42:01,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 66.94444444444444) internal successors, (1205), 18 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:01,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:01,734 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:01,734 INFO L175 Difference]: Start difference. First operand has 211 places, 128 transitions, 899 flow. Second operand 18 states and 1205 transitions. [2022-11-02 20:42:01,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 144 transitions, 1213 flow [2022-11-02 20:42:01,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 144 transitions, 1095 flow, removed 25 selfloop flow, removed 22 redundant places. [2022-11-02 20:42:01,750 INFO L231 Difference]: Finished difference. Result has 195 places, 108 transitions, 568 flow [2022-11-02 20:42:01,751 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=568, PETRI_PLACES=195, PETRI_TRANSITIONS=108} [2022-11-02 20:42:01,751 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 104 predicate places. [2022-11-02 20:42:01,751 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 108 transitions, 568 flow [2022-11-02 20:42:01,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:01,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:01,752 INFO L208 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] [2022-11-02 20:42:01,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-02 20:42:01,753 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:42:01,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:01,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1390016806, now seen corresponding path program 13 times [2022-11-02 20:42:01,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:01,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538121665] [2022-11-02 20:42:01,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:01,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:01,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:02,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:02,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:02,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538121665] [2022-11-02 20:42:02,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538121665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:02,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:02,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:42:02,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939022660] [2022-11-02 20:42:02,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:02,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:42:02,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:02,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:42:02,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:42:02,007 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-11-02 20:42:02,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 108 transitions, 568 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:02,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:02,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-11-02 20:42:02,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:02,407 INFO L130 PetriNetUnfolder]: 76/388 cut-off events. [2022-11-02 20:42:02,408 INFO L131 PetriNetUnfolder]: For 1558/1562 co-relation queries the response was YES. [2022-11-02 20:42:02,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1528 conditions, 388 events. 76/388 cut-off events. For 1558/1562 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1833 event pairs, 40 based on Foata normal form. 1/384 useless extension candidates. Maximal degree in co-relation 1470. Up to 137 conditions per place. [2022-11-02 20:42:02,413 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 53 selfloop transitions, 19 changer transitions 28/161 dead transitions. [2022-11-02 20:42:02,414 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 161 transitions, 1359 flow [2022-11-02 20:42:02,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:42:02,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-02 20:42:02,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1475 transitions. [2022-11-02 20:42:02,417 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6573083778966132 [2022-11-02 20:42:02,417 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1475 transitions. [2022-11-02 20:42:02,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1475 transitions. [2022-11-02 20:42:02,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:02,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1475 transitions. [2022-11-02 20:42:02,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 67.04545454545455) internal successors, (1475), 22 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:02,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:02,430 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:02,431 INFO L175 Difference]: Start difference. First operand has 195 places, 108 transitions, 568 flow. Second operand 22 states and 1475 transitions. [2022-11-02 20:42:02,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 161 transitions, 1359 flow [2022-11-02 20:42:02,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 161 transitions, 1160 flow, removed 41 selfloop flow, removed 23 redundant places. [2022-11-02 20:42:02,443 INFO L231 Difference]: Finished difference. Result has 179 places, 119 transitions, 682 flow [2022-11-02 20:42:02,443 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=682, PETRI_PLACES=179, PETRI_TRANSITIONS=119} [2022-11-02 20:42:02,444 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 88 predicate places. [2022-11-02 20:42:02,444 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 119 transitions, 682 flow [2022-11-02 20:42:02,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:02,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:02,445 INFO L208 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] [2022-11-02 20:42:02,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-02 20:42:02,447 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:42:02,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:02,448 INFO L85 PathProgramCache]: Analyzing trace with hash -807313904, now seen corresponding path program 14 times [2022-11-02 20:42:02,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:02,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925624993] [2022-11-02 20:42:02,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:02,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:02,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:02,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:02,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:02,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925624993] [2022-11-02 20:42:02,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925624993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:02,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:02,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:42:02,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175859562] [2022-11-02 20:42:02,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:02,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:42:02,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:02,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:42:02,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:42:02,672 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-11-02 20:42:02,673 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 119 transitions, 682 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:02,673 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:02,673 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-11-02 20:42:02,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:03,090 INFO L130 PetriNetUnfolder]: 73/372 cut-off events. [2022-11-02 20:42:03,091 INFO L131 PetriNetUnfolder]: For 1280/1284 co-relation queries the response was YES. [2022-11-02 20:42:03,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1482 conditions, 372 events. 73/372 cut-off events. For 1280/1284 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1727 event pairs, 41 based on Foata normal form. 1/367 useless extension candidates. Maximal degree in co-relation 1428. Up to 135 conditions per place. [2022-11-02 20:42:03,096 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 49 selfloop transitions, 21 changer transitions 28/159 dead transitions. [2022-11-02 20:42:03,096 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 159 transitions, 1345 flow [2022-11-02 20:42:03,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:42:03,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-02 20:42:03,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1409 transitions. [2022-11-02 20:42:03,099 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.657796451914099 [2022-11-02 20:42:03,099 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1409 transitions. [2022-11-02 20:42:03,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1409 transitions. [2022-11-02 20:42:03,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:03,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1409 transitions. [2022-11-02 20:42:03,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 67.0952380952381) internal successors, (1409), 21 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:03,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:03,106 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:03,106 INFO L175 Difference]: Start difference. First operand has 179 places, 119 transitions, 682 flow. Second operand 21 states and 1409 transitions. [2022-11-02 20:42:03,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 159 transitions, 1345 flow [2022-11-02 20:42:03,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 159 transitions, 1253 flow, removed 40 selfloop flow, removed 11 redundant places. [2022-11-02 20:42:03,118 INFO L231 Difference]: Finished difference. Result has 188 places, 121 transitions, 777 flow [2022-11-02 20:42:03,118 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=777, PETRI_PLACES=188, PETRI_TRANSITIONS=121} [2022-11-02 20:42:03,118 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 97 predicate places. [2022-11-02 20:42:03,119 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 121 transitions, 777 flow [2022-11-02 20:42:03,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:03,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:03,119 INFO L208 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] [2022-11-02 20:42:03,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-02 20:42:03,119 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:42:03,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:03,120 INFO L85 PathProgramCache]: Analyzing trace with hash -295179098, now seen corresponding path program 15 times [2022-11-02 20:42:03,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:03,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312684065] [2022-11-02 20:42:03,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:03,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:03,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:03,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:03,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:03,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312684065] [2022-11-02 20:42:03,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312684065] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:03,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:03,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:42:03,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630880279] [2022-11-02 20:42:03,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:03,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:42:03,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:03,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:42:03,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:42:03,329 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-11-02 20:42:03,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 121 transitions, 777 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:03,330 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:03,330 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-11-02 20:42:03,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:03,640 INFO L130 PetriNetUnfolder]: 70/377 cut-off events. [2022-11-02 20:42:03,641 INFO L131 PetriNetUnfolder]: For 1667/1671 co-relation queries the response was YES. [2022-11-02 20:42:03,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1557 conditions, 377 events. 70/377 cut-off events. For 1667/1671 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1762 event pairs, 38 based on Foata normal form. 1/372 useless extension candidates. Maximal degree in co-relation 1499. Up to 140 conditions per place. [2022-11-02 20:42:03,646 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 49 selfloop transitions, 22 changer transitions 25/157 dead transitions. [2022-11-02 20:42:03,646 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 157 transitions, 1390 flow [2022-11-02 20:42:03,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 20:42:03,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-02 20:42:03,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1086 transitions. [2022-11-02 20:42:03,649 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6654411764705882 [2022-11-02 20:42:03,649 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1086 transitions. [2022-11-02 20:42:03,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1086 transitions. [2022-11-02 20:42:03,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:03,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1086 transitions. [2022-11-02 20:42:03,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 67.875) internal successors, (1086), 16 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:03,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 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) [2022-11-02 20:42:03,655 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 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) [2022-11-02 20:42:03,655 INFO L175 Difference]: Start difference. First operand has 188 places, 121 transitions, 777 flow. Second operand 16 states and 1086 transitions. [2022-11-02 20:42:03,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 157 transitions, 1390 flow [2022-11-02 20:42:03,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 157 transitions, 1257 flow, removed 41 selfloop flow, removed 16 redundant places. [2022-11-02 20:42:03,669 INFO L231 Difference]: Finished difference. Result has 183 places, 126 transitions, 850 flow [2022-11-02 20:42:03,669 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=850, PETRI_PLACES=183, PETRI_TRANSITIONS=126} [2022-11-02 20:42:03,670 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 92 predicate places. [2022-11-02 20:42:03,670 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 126 transitions, 850 flow [2022-11-02 20:42:03,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:03,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:03,671 INFO L208 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] [2022-11-02 20:42:03,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-02 20:42:03,671 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:42:03,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:03,672 INFO L85 PathProgramCache]: Analyzing trace with hash -2002787190, now seen corresponding path program 16 times [2022-11-02 20:42:03,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:03,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244375381] [2022-11-02 20:42:03,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:03,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:03,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:03,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:03,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:03,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244375381] [2022-11-02 20:42:03,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244375381] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:03,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:03,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:42:03,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143193699] [2022-11-02 20:42:03,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:03,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:42:03,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:03,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:42:03,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:42:03,886 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-11-02 20:42:03,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 126 transitions, 850 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:03,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:03,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-11-02 20:42:03,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:04,176 INFO L130 PetriNetUnfolder]: 61/339 cut-off events. [2022-11-02 20:42:04,176 INFO L131 PetriNetUnfolder]: For 1247/1251 co-relation queries the response was YES. [2022-11-02 20:42:04,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1357 conditions, 339 events. 61/339 cut-off events. For 1247/1251 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1482 event pairs, 38 based on Foata normal form. 1/334 useless extension candidates. Maximal degree in co-relation 1303. Up to 134 conditions per place. [2022-11-02 20:42:04,181 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 45 selfloop transitions, 10 changer transitions 30/146 dead transitions. [2022-11-02 20:42:04,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 146 transitions, 1211 flow [2022-11-02 20:42:04,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:42:04,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:42:04,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1208 transitions. [2022-11-02 20:42:04,184 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6579520697167756 [2022-11-02 20:42:04,184 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1208 transitions. [2022-11-02 20:42:04,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1208 transitions. [2022-11-02 20:42:04,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:04,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1208 transitions. [2022-11-02 20:42:04,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.11111111111111) internal successors, (1208), 18 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:04,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:04,191 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:04,191 INFO L175 Difference]: Start difference. First operand has 183 places, 126 transitions, 850 flow. Second operand 18 states and 1208 transitions. [2022-11-02 20:42:04,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 146 transitions, 1211 flow [2022-11-02 20:42:04,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 146 transitions, 1109 flow, removed 29 selfloop flow, removed 9 redundant places. [2022-11-02 20:42:04,204 INFO L231 Difference]: Finished difference. Result has 191 places, 111 transitions, 618 flow [2022-11-02 20:42:04,205 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=618, PETRI_PLACES=191, PETRI_TRANSITIONS=111} [2022-11-02 20:42:04,206 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 100 predicate places. [2022-11-02 20:42:04,207 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 111 transitions, 618 flow [2022-11-02 20:42:04,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:04,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:04,208 INFO L208 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] [2022-11-02 20:42:04,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-02 20:42:04,208 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:42:04,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:04,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1010734676, now seen corresponding path program 17 times [2022-11-02 20:42:04,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:04,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617371176] [2022-11-02 20:42:04,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:04,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:04,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:04,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:04,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:04,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617371176] [2022-11-02 20:42:04,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617371176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:04,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:04,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:42:04,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452059286] [2022-11-02 20:42:04,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:04,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:42:04,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:04,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:42:04,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:42:04,416 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-11-02 20:42:04,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 111 transitions, 618 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:04,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:04,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-11-02 20:42:04,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:04,748 INFO L130 PetriNetUnfolder]: 66/352 cut-off events. [2022-11-02 20:42:04,749 INFO L131 PetriNetUnfolder]: For 1374/1378 co-relation queries the response was YES. [2022-11-02 20:42:04,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1402 conditions, 352 events. 66/352 cut-off events. For 1374/1378 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1561 event pairs, 39 based on Foata normal form. 1/347 useless extension candidates. Maximal degree in co-relation 1347. Up to 134 conditions per place. [2022-11-02 20:42:04,754 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 43 selfloop transitions, 20 changer transitions 23/147 dead transitions. [2022-11-02 20:42:04,755 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 147 transitions, 1210 flow [2022-11-02 20:42:04,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:42:04,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:42:04,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1213 transitions. [2022-11-02 20:42:04,758 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6606753812636166 [2022-11-02 20:42:04,758 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1213 transitions. [2022-11-02 20:42:04,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1213 transitions. [2022-11-02 20:42:04,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:04,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1213 transitions. [2022-11-02 20:42:04,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.38888888888889) internal successors, (1213), 18 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:04,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:04,765 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:04,765 INFO L175 Difference]: Start difference. First operand has 191 places, 111 transitions, 618 flow. Second operand 18 states and 1213 transitions. [2022-11-02 20:42:04,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 147 transitions, 1210 flow [2022-11-02 20:42:04,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 147 transitions, 1083 flow, removed 24 selfloop flow, removed 17 redundant places. [2022-11-02 20:42:04,779 INFO L231 Difference]: Finished difference. Result has 177 places, 120 transitions, 766 flow [2022-11-02 20:42:04,779 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=766, PETRI_PLACES=177, PETRI_TRANSITIONS=120} [2022-11-02 20:42:04,780 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 86 predicate places. [2022-11-02 20:42:04,780 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 120 transitions, 766 flow [2022-11-02 20:42:04,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:04,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:04,781 INFO L208 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] [2022-11-02 20:42:04,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-02 20:42:04,781 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:42:04,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:04,782 INFO L85 PathProgramCache]: Analyzing trace with hash -926400020, now seen corresponding path program 18 times [2022-11-02 20:42:04,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:04,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330355047] [2022-11-02 20:42:04,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:04,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:05,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:05,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:05,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330355047] [2022-11-02 20:42:05,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330355047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:05,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:05,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:42:05,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752242152] [2022-11-02 20:42:05,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:05,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:42:05,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:05,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:42:05,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:42:05,005 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-11-02 20:42:05,006 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 120 transitions, 766 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:05,006 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:05,007 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-11-02 20:42:05,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:05,308 INFO L130 PetriNetUnfolder]: 62/344 cut-off events. [2022-11-02 20:42:05,308 INFO L131 PetriNetUnfolder]: For 1142/1146 co-relation queries the response was YES. [2022-11-02 20:42:05,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1356 conditions, 344 events. 62/344 cut-off events. For 1142/1146 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1515 event pairs, 35 based on Foata normal form. 1/340 useless extension candidates. Maximal degree in co-relation 1304. Up to 134 conditions per place. [2022-11-02 20:42:05,313 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 44 selfloop transitions, 22 changer transitions 24/151 dead transitions. [2022-11-02 20:42:05,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 151 transitions, 1291 flow [2022-11-02 20:42:05,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:42:05,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-02 20:42:05,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1149 transitions. [2022-11-02 20:42:05,316 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6626297577854672 [2022-11-02 20:42:05,316 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1149 transitions. [2022-11-02 20:42:05,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1149 transitions. [2022-11-02 20:42:05,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:05,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1149 transitions. [2022-11-02 20:42:05,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.58823529411765) internal successors, (1149), 17 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:05,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:05,323 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:05,323 INFO L175 Difference]: Start difference. First operand has 177 places, 120 transitions, 766 flow. Second operand 17 states and 1149 transitions. [2022-11-02 20:42:05,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 151 transitions, 1291 flow [2022-11-02 20:42:05,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 151 transitions, 1210 flow, removed 36 selfloop flow, removed 5 redundant places. [2022-11-02 20:42:05,336 INFO L231 Difference]: Finished difference. Result has 189 places, 124 transitions, 864 flow [2022-11-02 20:42:05,336 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=716, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=864, PETRI_PLACES=189, PETRI_TRANSITIONS=124} [2022-11-02 20:42:05,337 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 98 predicate places. [2022-11-02 20:42:05,337 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 124 transitions, 864 flow [2022-11-02 20:42:05,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:05,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:05,338 INFO L208 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] [2022-11-02 20:42:05,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-02 20:42:05,338 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:42:05,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:05,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1812798972, now seen corresponding path program 19 times [2022-11-02 20:42:05,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:05,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447304119] [2022-11-02 20:42:05,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:05,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:05,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:05,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:05,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:05,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447304119] [2022-11-02 20:42:05,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447304119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:05,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:05,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:42:05,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523158241] [2022-11-02 20:42:05,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:05,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:42:05,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:05,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:42:05,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:42:05,555 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-11-02 20:42:05,556 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 124 transitions, 864 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:05,556 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:05,556 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-11-02 20:42:05,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:05,914 INFO L130 PetriNetUnfolder]: 56/335 cut-off events. [2022-11-02 20:42:05,914 INFO L131 PetriNetUnfolder]: For 1087/1091 co-relation queries the response was YES. [2022-11-02 20:42:05,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1302 conditions, 335 events. 56/335 cut-off events. For 1087/1091 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1454 event pairs, 35 based on Foata normal form. 1/331 useless extension candidates. Maximal degree in co-relation 1244. Up to 134 conditions per place. [2022-11-02 20:42:05,919 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 42 selfloop transitions, 13 changer transitions 28/144 dead transitions. [2022-11-02 20:42:05,919 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 144 transitions, 1236 flow [2022-11-02 20:42:05,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:42:05,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:42:05,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1208 transitions. [2022-11-02 20:42:05,921 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6579520697167756 [2022-11-02 20:42:05,921 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1208 transitions. [2022-11-02 20:42:05,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1208 transitions. [2022-11-02 20:42:05,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:05,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1208 transitions. [2022-11-02 20:42:05,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.11111111111111) internal successors, (1208), 18 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:05,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:05,928 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:05,928 INFO L175 Difference]: Start difference. First operand has 189 places, 124 transitions, 864 flow. Second operand 18 states and 1208 transitions. [2022-11-02 20:42:05,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 144 transitions, 1236 flow [2022-11-02 20:42:05,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 144 transitions, 1129 flow, removed 33 selfloop flow, removed 8 redundant places. [2022-11-02 20:42:05,941 INFO L231 Difference]: Finished difference. Result has 198 places, 115 transitions, 700 flow [2022-11-02 20:42:05,943 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=787, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=700, PETRI_PLACES=198, PETRI_TRANSITIONS=115} [2022-11-02 20:42:05,943 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 107 predicate places. [2022-11-02 20:42:05,944 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 115 transitions, 700 flow [2022-11-02 20:42:05,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:05,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:05,944 INFO L208 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] [2022-11-02 20:42:05,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-02 20:42:05,946 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:42:05,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:05,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1194196458, now seen corresponding path program 20 times [2022-11-02 20:42:05,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:05,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587463647] [2022-11-02 20:42:05,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:05,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:05,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:06,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:06,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:06,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587463647] [2022-11-02 20:42:06,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587463647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:06,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:06,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:42:06,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203865796] [2022-11-02 20:42:06,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:06,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:42:06,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:06,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:42:06,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:42:06,147 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-11-02 20:42:06,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 115 transitions, 700 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:06,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:06,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-11-02 20:42:06,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:06,480 INFO L130 PetriNetUnfolder]: 48/266 cut-off events. [2022-11-02 20:42:06,480 INFO L131 PetriNetUnfolder]: For 754/758 co-relation queries the response was YES. [2022-11-02 20:42:06,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1004 conditions, 266 events. 48/266 cut-off events. For 754/758 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1051 event pairs, 35 based on Foata normal form. 1/262 useless extension candidates. Maximal degree in co-relation 944. Up to 112 conditions per place. [2022-11-02 20:42:06,484 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 28 selfloop transitions, 0 changer transitions 42/125 dead transitions. [2022-11-02 20:42:06,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 125 transitions, 910 flow [2022-11-02 20:42:06,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:42:06,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-02 20:42:06,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1135 transitions. [2022-11-02 20:42:06,487 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.654555940023068 [2022-11-02 20:42:06,487 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1135 transitions. [2022-11-02 20:42:06,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1135 transitions. [2022-11-02 20:42:06,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:06,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1135 transitions. [2022-11-02 20:42:06,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 66.76470588235294) internal successors, (1135), 17 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:06,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:06,496 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:06,496 INFO L175 Difference]: Start difference. First operand has 198 places, 115 transitions, 700 flow. Second operand 17 states and 1135 transitions. [2022-11-02 20:42:06,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 125 transitions, 910 flow [2022-11-02 20:42:06,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 125 transitions, 806 flow, removed 27 selfloop flow, removed 21 redundant places. [2022-11-02 20:42:06,505 INFO L231 Difference]: Finished difference. Result has 179 places, 83 transitions, 288 flow [2022-11-02 20:42:06,506 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=288, PETRI_PLACES=179, PETRI_TRANSITIONS=83} [2022-11-02 20:42:06,506 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 88 predicate places. [2022-11-02 20:42:06,506 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 83 transitions, 288 flow [2022-11-02 20:42:06,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:06,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:06,507 INFO L208 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] [2022-11-02 20:42:06,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-02 20:42:06,507 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:42:06,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:06,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1102674884, now seen corresponding path program 1 times [2022-11-02 20:42:06,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:06,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920458305] [2022-11-02 20:42:06,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:06,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:06,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:06,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:06,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:06,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920458305] [2022-11-02 20:42:06,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920458305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:06,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:06,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:42:06,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780902527] [2022-11-02 20:42:06,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:06,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:42:06,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:06,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:42:06,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:42:06,699 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-11-02 20:42:06,700 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 83 transitions, 288 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:06,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:06,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-11-02 20:42:06,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:07,030 INFO L130 PetriNetUnfolder]: 66/288 cut-off events. [2022-11-02 20:42:07,031 INFO L131 PetriNetUnfolder]: For 706/707 co-relation queries the response was YES. [2022-11-02 20:42:07,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 984 conditions, 288 events. 66/288 cut-off events. For 706/707 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1069 event pairs, 11 based on Foata normal form. 1/285 useless extension candidates. Maximal degree in co-relation 936. Up to 56 conditions per place. [2022-11-02 20:42:07,035 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 44 selfloop transitions, 12 changer transitions 32/143 dead transitions. [2022-11-02 20:42:07,035 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 143 transitions, 919 flow [2022-11-02 20:42:07,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:42:07,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-02 20:42:07,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1349 transitions. [2022-11-02 20:42:07,038 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6612745098039216 [2022-11-02 20:42:07,038 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1349 transitions. [2022-11-02 20:42:07,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1349 transitions. [2022-11-02 20:42:07,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:07,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1349 transitions. [2022-11-02 20:42:07,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 67.45) internal successors, (1349), 20 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:07,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 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) [2022-11-02 20:42:07,045 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 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) [2022-11-02 20:42:07,046 INFO L175 Difference]: Start difference. First operand has 179 places, 83 transitions, 288 flow. Second operand 20 states and 1349 transitions. [2022-11-02 20:42:07,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 143 transitions, 919 flow [2022-11-02 20:42:07,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 143 transitions, 782 flow, removed 62 selfloop flow, removed 18 redundant places. [2022-11-02 20:42:07,053 INFO L231 Difference]: Finished difference. Result has 151 places, 93 transitions, 392 flow [2022-11-02 20:42:07,053 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=392, PETRI_PLACES=151, PETRI_TRANSITIONS=93} [2022-11-02 20:42:07,057 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 60 predicate places. [2022-11-02 20:42:07,057 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 93 transitions, 392 flow [2022-11-02 20:42:07,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:07,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:07,058 INFO L208 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] [2022-11-02 20:42:07,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-02 20:42:07,061 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:42:07,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:07,061 INFO L85 PathProgramCache]: Analyzing trace with hash 307988166, now seen corresponding path program 2 times [2022-11-02 20:42:07,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:07,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704324054] [2022-11-02 20:42:07,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:07,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:07,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:07,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:07,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:07,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704324054] [2022-11-02 20:42:07,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704324054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:07,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:07,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:42:07,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838445889] [2022-11-02 20:42:07,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:07,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:42:07,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:07,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:42:07,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:42:07,255 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-11-02 20:42:07,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 93 transitions, 392 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:07,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:07,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-11-02 20:42:07,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:07,645 INFO L130 PetriNetUnfolder]: 63/281 cut-off events. [2022-11-02 20:42:07,646 INFO L131 PetriNetUnfolder]: For 1343/1347 co-relation queries the response was YES. [2022-11-02 20:42:07,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1165 conditions, 281 events. 63/281 cut-off events. For 1343/1347 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1074 event pairs, 5 based on Foata normal form. 1/278 useless extension candidates. Maximal degree in co-relation 1116. Up to 36 conditions per place. [2022-11-02 20:42:07,650 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 63 selfloop transitions, 10 changer transitions 39/167 dead transitions. [2022-11-02 20:42:07,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 167 transitions, 1284 flow [2022-11-02 20:42:07,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-02 20:42:07,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-02 20:42:07,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1604 transitions. [2022-11-02 20:42:07,653 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6552287581699346 [2022-11-02 20:42:07,653 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1604 transitions. [2022-11-02 20:42:07,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1604 transitions. [2022-11-02 20:42:07,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:07,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1604 transitions. [2022-11-02 20:42:07,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 66.83333333333333) internal successors, (1604), 24 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:07,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:07,661 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:07,661 INFO L175 Difference]: Start difference. First operand has 151 places, 93 transitions, 392 flow. Second operand 24 states and 1604 transitions. [2022-11-02 20:42:07,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 167 transitions, 1284 flow [2022-11-02 20:42:07,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 167 transitions, 1016 flow, removed 128 selfloop flow, removed 14 redundant places. [2022-11-02 20:42:07,669 INFO L231 Difference]: Finished difference. Result has 166 places, 93 transitions, 390 flow [2022-11-02 20:42:07,670 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=390, PETRI_PLACES=166, PETRI_TRANSITIONS=93} [2022-11-02 20:42:07,673 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 75 predicate places. [2022-11-02 20:42:07,673 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 93 transitions, 390 flow [2022-11-02 20:42:07,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:07,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:07,673 INFO L208 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] [2022-11-02 20:42:07,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-02 20:42:07,674 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:42:07,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:07,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1223932278, now seen corresponding path program 3 times [2022-11-02 20:42:07,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:07,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449148289] [2022-11-02 20:42:07,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:07,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:07,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:07,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:07,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:07,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449148289] [2022-11-02 20:42:07,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449148289] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:07,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:07,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:42:07,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513625923] [2022-11-02 20:42:07,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:07,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:42:07,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:07,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:42:07,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:42:07,883 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-11-02 20:42:07,884 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 93 transitions, 390 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:07,885 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:07,885 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-11-02 20:42:07,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:08,359 INFO L130 PetriNetUnfolder]: 62/308 cut-off events. [2022-11-02 20:42:08,359 INFO L131 PetriNetUnfolder]: For 982/983 co-relation queries the response was YES. [2022-11-02 20:42:08,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1152 conditions, 308 events. 62/308 cut-off events. For 982/983 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1294 event pairs, 0 based on Foata normal form. 1/309 useless extension candidates. Maximal degree in co-relation 1098. Up to 49 conditions per place. [2022-11-02 20:42:08,363 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 52 selfloop transitions, 10 changer transitions 41/158 dead transitions. [2022-11-02 20:42:08,364 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 158 transitions, 1141 flow [2022-11-02 20:42:08,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-02 20:42:08,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-02 20:42:08,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1606 transitions. [2022-11-02 20:42:08,367 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6560457516339869 [2022-11-02 20:42:08,367 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1606 transitions. [2022-11-02 20:42:08,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1606 transitions. [2022-11-02 20:42:08,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:08,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1606 transitions. [2022-11-02 20:42:08,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 66.91666666666667) internal successors, (1606), 24 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) [2022-11-02 20:42:08,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:08,375 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:08,375 INFO L175 Difference]: Start difference. First operand has 166 places, 93 transitions, 390 flow. Second operand 24 states and 1606 transitions. [2022-11-02 20:42:08,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 158 transitions, 1141 flow [2022-11-02 20:42:08,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 158 transitions, 1007 flow, removed 27 selfloop flow, removed 20 redundant places. [2022-11-02 20:42:08,383 INFO L231 Difference]: Finished difference. Result has 170 places, 93 transitions, 412 flow [2022-11-02 20:42:08,383 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=412, PETRI_PLACES=170, PETRI_TRANSITIONS=93} [2022-11-02 20:42:08,384 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 79 predicate places. [2022-11-02 20:42:08,384 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 93 transitions, 412 flow [2022-11-02 20:42:08,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:08,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:08,384 INFO L208 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] [2022-11-02 20:42:08,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-02 20:42:08,385 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:42:08,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:08,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1869930814, now seen corresponding path program 4 times [2022-11-02 20:42:08,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:08,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442285709] [2022-11-02 20:42:08,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:08,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:08,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:08,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:08,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442285709] [2022-11-02 20:42:08,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442285709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:08,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:08,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:42:08,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743294405] [2022-11-02 20:42:08,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:08,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:42:08,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:08,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:42:08,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:42:08,626 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-11-02 20:42:08,627 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 93 transitions, 412 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:08,627 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:08,627 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-11-02 20:42:08,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:08,946 INFO L130 PetriNetUnfolder]: 60/296 cut-off events. [2022-11-02 20:42:08,946 INFO L131 PetriNetUnfolder]: For 1905/1911 co-relation queries the response was YES. [2022-11-02 20:42:08,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1339 conditions, 296 events. 60/296 cut-off events. For 1905/1911 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1187 event pairs, 13 based on Foata normal form. 2/296 useless extension candidates. Maximal degree in co-relation 1282. Up to 69 conditions per place. [2022-11-02 20:42:08,950 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 43 selfloop transitions, 18 changer transitions 22/138 dead transitions. [2022-11-02 20:42:08,950 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 138 transitions, 1078 flow [2022-11-02 20:42:08,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 20:42:08,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-02 20:42:08,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1082 transitions. [2022-11-02 20:42:08,956 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6629901960784313 [2022-11-02 20:42:08,956 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1082 transitions. [2022-11-02 20:42:08,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1082 transitions. [2022-11-02 20:42:08,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:08,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1082 transitions. [2022-11-02 20:42:08,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 67.625) internal successors, (1082), 16 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:08,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 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) [2022-11-02 20:42:08,962 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 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) [2022-11-02 20:42:08,962 INFO L175 Difference]: Start difference. First operand has 170 places, 93 transitions, 412 flow. Second operand 16 states and 1082 transitions. [2022-11-02 20:42:08,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 138 transitions, 1078 flow [2022-11-02 20:42:08,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 138 transitions, 891 flow, removed 71 selfloop flow, removed 20 redundant places. [2022-11-02 20:42:08,971 INFO L231 Difference]: Finished difference. Result has 159 places, 103 transitions, 551 flow [2022-11-02 20:42:08,971 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=551, PETRI_PLACES=159, PETRI_TRANSITIONS=103} [2022-11-02 20:42:08,972 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 68 predicate places. [2022-11-02 20:42:08,972 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 103 transitions, 551 flow [2022-11-02 20:42:08,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:08,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:08,973 INFO L208 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] [2022-11-02 20:42:08,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-02 20:42:08,974 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:42:08,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:08,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1692530934, now seen corresponding path program 5 times [2022-11-02 20:42:08,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:08,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015806204] [2022-11-02 20:42:08,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:08,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:08,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:09,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:09,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:09,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015806204] [2022-11-02 20:42:09,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015806204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:09,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:09,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:42:09,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190925232] [2022-11-02 20:42:09,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:09,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:42:09,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:09,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:42:09,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:42:09,196 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-11-02 20:42:09,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 103 transitions, 551 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:09,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:09,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-11-02 20:42:09,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:09,634 INFO L130 PetriNetUnfolder]: 68/333 cut-off events. [2022-11-02 20:42:09,634 INFO L131 PetriNetUnfolder]: For 1780/1785 co-relation queries the response was YES. [2022-11-02 20:42:09,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1460 conditions, 333 events. 68/333 cut-off events. For 1780/1785 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1489 event pairs, 15 based on Foata normal form. 1/331 useless extension candidates. Maximal degree in co-relation 1407. Up to 71 conditions per place. [2022-11-02 20:42:09,639 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 60 selfloop transitions, 17 changer transitions 32/164 dead transitions. [2022-11-02 20:42:09,640 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 164 transitions, 1405 flow [2022-11-02 20:42:09,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:42:09,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-02 20:42:09,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1415 transitions. [2022-11-02 20:42:09,643 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6605975723622782 [2022-11-02 20:42:09,643 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1415 transitions. [2022-11-02 20:42:09,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1415 transitions. [2022-11-02 20:42:09,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:09,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1415 transitions. [2022-11-02 20:42:09,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 67.38095238095238) internal successors, (1415), 21 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:09,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:09,650 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:09,651 INFO L175 Difference]: Start difference. First operand has 159 places, 103 transitions, 551 flow. Second operand 21 states and 1415 transitions. [2022-11-02 20:42:09,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 164 transitions, 1405 flow [2022-11-02 20:42:09,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 164 transitions, 1258 flow, removed 56 selfloop flow, removed 7 redundant places. [2022-11-02 20:42:09,662 INFO L231 Difference]: Finished difference. Result has 181 places, 114 transitions, 698 flow [2022-11-02 20:42:09,662 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=698, PETRI_PLACES=181, PETRI_TRANSITIONS=114} [2022-11-02 20:42:09,663 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 90 predicate places. [2022-11-02 20:42:09,664 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 114 transitions, 698 flow [2022-11-02 20:42:09,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:09,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:09,665 INFO L208 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] [2022-11-02 20:42:09,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-02 20:42:09,665 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:42:09,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:09,666 INFO L85 PathProgramCache]: Analyzing trace with hash -43232724, now seen corresponding path program 6 times [2022-11-02 20:42:09,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:09,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399058654] [2022-11-02 20:42:09,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:09,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:09,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:09,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:09,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399058654] [2022-11-02 20:42:09,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399058654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:09,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:09,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:42:09,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135090676] [2022-11-02 20:42:09,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:09,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:42:09,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:09,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:42:09,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:42:09,874 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-11-02 20:42:09,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 114 transitions, 698 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:09,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:09,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-11-02 20:42:09,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:10,235 INFO L130 PetriNetUnfolder]: 63/327 cut-off events. [2022-11-02 20:42:10,235 INFO L131 PetriNetUnfolder]: For 2883/2891 co-relation queries the response was YES. [2022-11-02 20:42:10,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1643 conditions, 327 events. 63/327 cut-off events. For 2883/2891 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1493 event pairs, 17 based on Foata normal form. 1/324 useless extension candidates. Maximal degree in co-relation 1579. Up to 84 conditions per place. [2022-11-02 20:42:10,240 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 56 selfloop transitions, 25 changer transitions 32/168 dead transitions. [2022-11-02 20:42:10,240 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 168 transitions, 1670 flow [2022-11-02 20:42:10,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:42:10,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-02 20:42:10,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1345 transitions. [2022-11-02 20:42:10,243 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6593137254901961 [2022-11-02 20:42:10,243 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1345 transitions. [2022-11-02 20:42:10,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1345 transitions. [2022-11-02 20:42:10,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:10,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1345 transitions. [2022-11-02 20:42:10,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 67.25) internal successors, (1345), 20 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:10,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 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) [2022-11-02 20:42:10,250 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 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) [2022-11-02 20:42:10,251 INFO L175 Difference]: Start difference. First operand has 181 places, 114 transitions, 698 flow. Second operand 20 states and 1345 transitions. [2022-11-02 20:42:10,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 168 transitions, 1670 flow [2022-11-02 20:42:10,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 168 transitions, 1416 flow, removed 127 selfloop flow, removed 11 redundant places. [2022-11-02 20:42:10,267 INFO L231 Difference]: Finished difference. Result has 191 places, 123 transitions, 855 flow [2022-11-02 20:42:10,267 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=618, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=855, PETRI_PLACES=191, PETRI_TRANSITIONS=123} [2022-11-02 20:42:10,267 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 100 predicate places. [2022-11-02 20:42:10,268 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 123 transitions, 855 flow [2022-11-02 20:42:10,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:10,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:10,268 INFO L208 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] [2022-11-02 20:42:10,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-02 20:42:10,269 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:42:10,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:10,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1067530540, now seen corresponding path program 7 times [2022-11-02 20:42:10,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:10,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224013073] [2022-11-02 20:42:10,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:10,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:10,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:10,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:10,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224013073] [2022-11-02 20:42:10,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224013073] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:10,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:10,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:42:10,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293897233] [2022-11-02 20:42:10,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:10,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:42:10,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:10,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:42:10,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:42:10,466 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-11-02 20:42:10,467 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 123 transitions, 855 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:10,467 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:10,467 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-11-02 20:42:10,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:10,887 INFO L130 PetriNetUnfolder]: 61/325 cut-off events. [2022-11-02 20:42:10,887 INFO L131 PetriNetUnfolder]: For 2487/2502 co-relation queries the response was YES. [2022-11-02 20:42:10,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1583 conditions, 325 events. 61/325 cut-off events. For 2487/2502 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1505 event pairs, 10 based on Foata normal form. 7/329 useless extension candidates. Maximal degree in co-relation 1514. Up to 68 conditions per place. [2022-11-02 20:42:10,893 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 58 selfloop transitions, 26 changer transitions 38/177 dead transitions. [2022-11-02 20:42:10,893 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 177 transitions, 1701 flow [2022-11-02 20:42:10,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:42:10,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-02 20:42:10,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1476 transitions. [2022-11-02 20:42:10,897 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6577540106951871 [2022-11-02 20:42:10,897 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1476 transitions. [2022-11-02 20:42:10,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1476 transitions. [2022-11-02 20:42:10,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:10,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1476 transitions. [2022-11-02 20:42:10,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 67.0909090909091) internal successors, (1476), 22 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:10,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:10,905 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:10,905 INFO L175 Difference]: Start difference. First operand has 191 places, 123 transitions, 855 flow. Second operand 22 states and 1476 transitions. [2022-11-02 20:42:10,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 177 transitions, 1701 flow [2022-11-02 20:42:10,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 177 transitions, 1476 flow, removed 94 selfloop flow, removed 14 redundant places. [2022-11-02 20:42:10,926 INFO L231 Difference]: Finished difference. Result has 200 places, 123 transitions, 849 flow [2022-11-02 20:42:10,926 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=849, PETRI_PLACES=200, PETRI_TRANSITIONS=123} [2022-11-02 20:42:10,926 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 109 predicate places. [2022-11-02 20:42:10,927 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 123 transitions, 849 flow [2022-11-02 20:42:10,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:10,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:10,927 INFO L208 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] [2022-11-02 20:42:10,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-02 20:42:10,927 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:42:10,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:10,928 INFO L85 PathProgramCache]: Analyzing trace with hash 882953270, now seen corresponding path program 8 times [2022-11-02 20:42:10,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:10,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707362174] [2022-11-02 20:42:10,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:10,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:10,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:11,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:11,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:11,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707362174] [2022-11-02 20:42:11,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707362174] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:11,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:11,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:42:11,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585552307] [2022-11-02 20:42:11,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:11,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:42:11,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:11,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:42:11,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:42:11,136 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-11-02 20:42:11,137 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 123 transitions, 849 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:11,137 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:11,137 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-11-02 20:42:11,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:11,437 INFO L130 PetriNetUnfolder]: 48/280 cut-off events. [2022-11-02 20:42:11,437 INFO L131 PetriNetUnfolder]: For 1814/1828 co-relation queries the response was YES. [2022-11-02 20:42:11,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1313 conditions, 280 events. 48/280 cut-off events. For 1814/1828 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1132 event pairs, 9 based on Foata normal form. 4/282 useless extension candidates. Maximal degree in co-relation 1242. Up to 66 conditions per place. [2022-11-02 20:42:11,441 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 49 selfloop transitions, 14 changer transitions 35/153 dead transitions. [2022-11-02 20:42:11,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 153 transitions, 1323 flow [2022-11-02 20:42:11,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:42:11,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:42:11,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1207 transitions. [2022-11-02 20:42:11,444 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6574074074074074 [2022-11-02 20:42:11,444 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1207 transitions. [2022-11-02 20:42:11,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1207 transitions. [2022-11-02 20:42:11,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:11,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1207 transitions. [2022-11-02 20:42:11,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.05555555555556) internal successors, (1207), 18 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:11,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:11,452 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:11,452 INFO L175 Difference]: Start difference. First operand has 200 places, 123 transitions, 849 flow. Second operand 18 states and 1207 transitions. [2022-11-02 20:42:11,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 153 transitions, 1323 flow [2022-11-02 20:42:11,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 153 transitions, 1206 flow, removed 41 selfloop flow, removed 15 redundant places. [2022-11-02 20:42:11,467 INFO L231 Difference]: Finished difference. Result has 195 places, 108 transitions, 640 flow [2022-11-02 20:42:11,468 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=640, PETRI_PLACES=195, PETRI_TRANSITIONS=108} [2022-11-02 20:42:11,468 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 104 predicate places. [2022-11-02 20:42:11,468 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 108 transitions, 640 flow [2022-11-02 20:42:11,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:11,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:11,469 INFO L208 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] [2022-11-02 20:42:11,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-02 20:42:11,470 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:42:11,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:11,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1548977192, now seen corresponding path program 9 times [2022-11-02 20:42:11,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:11,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535429798] [2022-11-02 20:42:11,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:11,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:11,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:11,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:11,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:11,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535429798] [2022-11-02 20:42:11,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535429798] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:11,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:11,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:42:11,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947215388] [2022-11-02 20:42:11,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:11,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:42:11,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:11,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:42:11,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:42:11,653 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-11-02 20:42:11,654 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 108 transitions, 640 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:11,654 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:11,654 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-11-02 20:42:11,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:12,016 INFO L130 PetriNetUnfolder]: 50/284 cut-off events. [2022-11-02 20:42:12,016 INFO L131 PetriNetUnfolder]: For 1740/1744 co-relation queries the response was YES. [2022-11-02 20:42:12,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1325 conditions, 284 events. 50/284 cut-off events. For 1740/1744 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1120 event pairs, 15 based on Foata normal form. 1/282 useless extension candidates. Maximal degree in co-relation 1260. Up to 66 conditions per place. [2022-11-02 20:42:12,027 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 46 selfloop transitions, 22 changer transitions 25/148 dead transitions. [2022-11-02 20:42:12,027 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 148 transitions, 1279 flow [2022-11-02 20:42:12,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:42:12,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:42:12,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1213 transitions. [2022-11-02 20:42:12,029 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6606753812636166 [2022-11-02 20:42:12,030 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1213 transitions. [2022-11-02 20:42:12,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1213 transitions. [2022-11-02 20:42:12,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:12,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1213 transitions. [2022-11-02 20:42:12,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.38888888888889) internal successors, (1213), 18 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:12,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:12,036 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:12,036 INFO L175 Difference]: Start difference. First operand has 195 places, 108 transitions, 640 flow. Second operand 18 states and 1213 transitions. [2022-11-02 20:42:12,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 148 transitions, 1279 flow [2022-11-02 20:42:12,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 148 transitions, 1087 flow, removed 40 selfloop flow, removed 19 redundant places. [2022-11-02 20:42:12,049 INFO L231 Difference]: Finished difference. Result has 179 places, 117 transitions, 741 flow [2022-11-02 20:42:12,050 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=741, PETRI_PLACES=179, PETRI_TRANSITIONS=117} [2022-11-02 20:42:12,050 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 88 predicate places. [2022-11-02 20:42:12,051 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 117 transitions, 741 flow [2022-11-02 20:42:12,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:12,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:12,052 INFO L208 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] [2022-11-02 20:42:12,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-02 20:42:12,052 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:42:12,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:12,053 INFO L85 PathProgramCache]: Analyzing trace with hash 979063814, now seen corresponding path program 10 times [2022-11-02 20:42:12,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:12,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925925886] [2022-11-02 20:42:12,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:12,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:12,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:12,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:12,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:12,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925925886] [2022-11-02 20:42:12,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925925886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:12,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:12,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:42:12,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365115349] [2022-11-02 20:42:12,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:12,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:42:12,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:12,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:42:12,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:42:12,246 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-11-02 20:42:12,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 117 transitions, 741 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:12,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:12,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-11-02 20:42:12,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:12,594 INFO L130 PetriNetUnfolder]: 47/273 cut-off events. [2022-11-02 20:42:12,595 INFO L131 PetriNetUnfolder]: For 1202/1211 co-relation queries the response was YES. [2022-11-02 20:42:12,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1191 conditions, 273 events. 47/273 cut-off events. For 1202/1211 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1081 event pairs, 14 based on Foata normal form. 3/272 useless extension candidates. Maximal degree in co-relation 1131. Up to 66 conditions per place. [2022-11-02 20:42:12,599 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 47 selfloop transitions, 24 changer transitions 26/152 dead transitions. [2022-11-02 20:42:12,599 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 152 transitions, 1286 flow [2022-11-02 20:42:12,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:42:12,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-02 20:42:12,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1149 transitions. [2022-11-02 20:42:12,601 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6626297577854672 [2022-11-02 20:42:12,602 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1149 transitions. [2022-11-02 20:42:12,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1149 transitions. [2022-11-02 20:42:12,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:12,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1149 transitions. [2022-11-02 20:42:12,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.58823529411765) internal successors, (1149), 17 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:12,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:12,607 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:12,607 INFO L175 Difference]: Start difference. First operand has 179 places, 117 transitions, 741 flow. Second operand 17 states and 1149 transitions. [2022-11-02 20:42:12,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 152 transitions, 1286 flow [2022-11-02 20:42:12,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 152 transitions, 1201 flow, removed 37 selfloop flow, removed 5 redundant places. [2022-11-02 20:42:12,620 INFO L231 Difference]: Finished difference. Result has 191 places, 121 transitions, 825 flow [2022-11-02 20:42:12,620 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=687, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=825, PETRI_PLACES=191, PETRI_TRANSITIONS=121} [2022-11-02 20:42:12,621 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 100 predicate places. [2022-11-02 20:42:12,621 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 121 transitions, 825 flow [2022-11-02 20:42:12,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:12,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:12,622 INFO L208 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] [2022-11-02 20:42:12,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-02 20:42:12,623 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:42:12,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:12,626 INFO L85 PathProgramCache]: Analyzing trace with hash -992463862, now seen corresponding path program 11 times [2022-11-02 20:42:12,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:12,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385642006] [2022-11-02 20:42:12,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:12,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:12,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:12,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:12,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385642006] [2022-11-02 20:42:12,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385642006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:12,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:12,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:42:12,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017264521] [2022-11-02 20:42:12,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:12,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:42:12,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:12,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:42:12,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:42:12,818 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-11-02 20:42:12,818 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 121 transitions, 825 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:12,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:12,819 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-11-02 20:42:12,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:13,177 INFO L130 PetriNetUnfolder]: 44/272 cut-off events. [2022-11-02 20:42:13,178 INFO L131 PetriNetUnfolder]: For 1251/1259 co-relation queries the response was YES. [2022-11-02 20:42:13,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1177 conditions, 272 events. 44/272 cut-off events. For 1251/1259 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1087 event pairs, 12 based on Foata normal form. 3/272 useless extension candidates. Maximal degree in co-relation 1111. Up to 66 conditions per place. [2022-11-02 20:42:13,182 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 47 selfloop transitions, 14 changer transitions 34/150 dead transitions. [2022-11-02 20:42:13,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 150 transitions, 1267 flow [2022-11-02 20:42:13,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:42:13,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-02 20:42:13,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1148 transitions. [2022-11-02 20:42:13,185 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6620530565167243 [2022-11-02 20:42:13,185 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1148 transitions. [2022-11-02 20:42:13,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1148 transitions. [2022-11-02 20:42:13,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:13,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1148 transitions. [2022-11-02 20:42:13,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.52941176470588) internal successors, (1148), 17 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:13,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:13,190 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:13,191 INFO L175 Difference]: Start difference. First operand has 191 places, 121 transitions, 825 flow. Second operand 17 states and 1148 transitions. [2022-11-02 20:42:13,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 150 transitions, 1267 flow [2022-11-02 20:42:13,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 150 transitions, 1168 flow, removed 28 selfloop flow, removed 8 redundant places. [2022-11-02 20:42:13,205 INFO L231 Difference]: Finished difference. Result has 198 places, 112 transitions, 674 flow [2022-11-02 20:42:13,205 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=674, PETRI_PLACES=198, PETRI_TRANSITIONS=112} [2022-11-02 20:42:13,206 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 107 predicate places. [2022-11-02 20:42:13,206 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 112 transitions, 674 flow [2022-11-02 20:42:13,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:13,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:13,207 INFO L208 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] [2022-11-02 20:42:13,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-02 20:42:13,207 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:42:13,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:13,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1865410540, now seen corresponding path program 12 times [2022-11-02 20:42:13,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:13,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570111302] [2022-11-02 20:42:13,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:13,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:13,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:13,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:13,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:13,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570111302] [2022-11-02 20:42:13,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570111302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:13,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:13,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:42:13,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006236073] [2022-11-02 20:42:13,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:13,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:42:13,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:13,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:42:13,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:42:13,412 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-11-02 20:42:13,414 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 112 transitions, 674 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:13,414 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:13,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-11-02 20:42:13,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:13,756 INFO L130 PetriNetUnfolder]: 34/237 cut-off events. [2022-11-02 20:42:13,756 INFO L131 PetriNetUnfolder]: For 1095/1099 co-relation queries the response was YES. [2022-11-02 20:42:13,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 959 conditions, 237 events. 34/237 cut-off events. For 1095/1099 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 832 event pairs, 12 based on Foata normal form. 1/236 useless extension candidates. Maximal degree in co-relation 892. Up to 53 conditions per place. [2022-11-02 20:42:13,760 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 37 selfloop transitions, 3 changer transitions 37/132 dead transitions. [2022-11-02 20:42:13,760 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 132 transitions, 969 flow [2022-11-02 20:42:13,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:42:13,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:42:13,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1203 transitions. [2022-11-02 20:42:13,763 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6552287581699346 [2022-11-02 20:42:13,763 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1203 transitions. [2022-11-02 20:42:13,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1203 transitions. [2022-11-02 20:42:13,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:13,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1203 transitions. [2022-11-02 20:42:13,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 66.83333333333333) internal successors, (1203), 18 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:13,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:13,769 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:13,769 INFO L175 Difference]: Start difference. First operand has 198 places, 112 transitions, 674 flow. Second operand 18 states and 1203 transitions. [2022-11-02 20:42:13,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 132 transitions, 969 flow [2022-11-02 20:42:13,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 132 transitions, 849 flow, removed 26 selfloop flow, removed 22 redundant places. [2022-11-02 20:42:13,779 INFO L231 Difference]: Finished difference. Result has 182 places, 92 transitions, 398 flow [2022-11-02 20:42:13,779 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=398, PETRI_PLACES=182, PETRI_TRANSITIONS=92} [2022-11-02 20:42:13,780 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 91 predicate places. [2022-11-02 20:42:13,780 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 92 transitions, 398 flow [2022-11-02 20:42:13,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:13,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:13,781 INFO L208 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] [2022-11-02 20:42:13,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-02 20:42:13,781 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:42:13,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:13,782 INFO L85 PathProgramCache]: Analyzing trace with hash -203190652, now seen corresponding path program 13 times [2022-11-02 20:42:13,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:13,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081523121] [2022-11-02 20:42:13,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:13,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:13,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:13,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:13,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:13,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081523121] [2022-11-02 20:42:13,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081523121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:13,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:13,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:42:13,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937795768] [2022-11-02 20:42:13,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:13,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:42:13,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:13,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:42:13,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:42:13,971 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-11-02 20:42:13,972 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 92 transitions, 398 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:13,972 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:13,972 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-11-02 20:42:13,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:14,384 INFO L130 PetriNetUnfolder]: 39/247 cut-off events. [2022-11-02 20:42:14,384 INFO L131 PetriNetUnfolder]: For 1076/1077 co-relation queries the response was YES. [2022-11-02 20:42:14,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 968 conditions, 247 events. 39/247 cut-off events. For 1076/1077 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 854 event pairs, 5 based on Foata normal form. 1/248 useless extension candidates. Maximal degree in co-relation 910. Up to 33 conditions per place. [2022-11-02 20:42:14,388 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 43 selfloop transitions, 19 changer transitions 32/149 dead transitions. [2022-11-02 20:42:14,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 149 transitions, 1122 flow [2022-11-02 20:42:14,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:42:14,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-02 20:42:14,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1473 transitions. [2022-11-02 20:42:14,391 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6564171122994652 [2022-11-02 20:42:14,391 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1473 transitions. [2022-11-02 20:42:14,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1473 transitions. [2022-11-02 20:42:14,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:14,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1473 transitions. [2022-11-02 20:42:14,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 66.95454545454545) internal successors, (1473), 22 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:14,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:14,400 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:14,400 INFO L175 Difference]: Start difference. First operand has 182 places, 92 transitions, 398 flow. Second operand 22 states and 1473 transitions. [2022-11-02 20:42:14,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 149 transitions, 1122 flow [2022-11-02 20:42:14,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 149 transitions, 907 flow, removed 39 selfloop flow, removed 23 redundant places. [2022-11-02 20:42:14,407 INFO L231 Difference]: Finished difference. Result has 166 places, 103 transitions, 516 flow [2022-11-02 20:42:14,407 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=516, PETRI_PLACES=166, PETRI_TRANSITIONS=103} [2022-11-02 20:42:14,407 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 75 predicate places. [2022-11-02 20:42:14,407 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 103 transitions, 516 flow [2022-11-02 20:42:14,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:14,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:14,408 INFO L208 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] [2022-11-02 20:42:14,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-02 20:42:14,409 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:42:14,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:14,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1099084962, now seen corresponding path program 14 times [2022-11-02 20:42:14,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:14,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059380604] [2022-11-02 20:42:14,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:14,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:14,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:14,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:14,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:14,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059380604] [2022-11-02 20:42:14,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059380604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:14,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:14,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:42:14,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315868104] [2022-11-02 20:42:14,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:14,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:42:14,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:14,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:42:14,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:42:14,597 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-11-02 20:42:14,598 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 103 transitions, 516 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:14,598 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:14,598 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-11-02 20:42:14,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:14,995 INFO L130 PetriNetUnfolder]: 36/231 cut-off events. [2022-11-02 20:42:14,996 INFO L131 PetriNetUnfolder]: For 737/738 co-relation queries the response was YES. [2022-11-02 20:42:14,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 922 conditions, 231 events. 36/231 cut-off events. For 737/738 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 758 event pairs, 6 based on Foata normal form. 1/230 useless extension candidates. Maximal degree in co-relation 868. Up to 31 conditions per place. [2022-11-02 20:42:15,000 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 39 selfloop transitions, 21 changer transitions 32/147 dead transitions. [2022-11-02 20:42:15,000 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 147 transitions, 1108 flow [2022-11-02 20:42:15,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:42:15,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-02 20:42:15,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1406 transitions. [2022-11-02 20:42:15,007 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6563958916900093 [2022-11-02 20:42:15,007 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1406 transitions. [2022-11-02 20:42:15,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1406 transitions. [2022-11-02 20:42:15,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:15,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1406 transitions. [2022-11-02 20:42:15,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 66.95238095238095) internal successors, (1406), 21 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:15,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:15,014 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:15,014 INFO L175 Difference]: Start difference. First operand has 166 places, 103 transitions, 516 flow. Second operand 21 states and 1406 transitions. [2022-11-02 20:42:15,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 147 transitions, 1108 flow [2022-11-02 20:42:15,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 147 transitions, 966 flow, removed 65 selfloop flow, removed 11 redundant places. [2022-11-02 20:42:15,021 INFO L231 Difference]: Finished difference. Result has 175 places, 105 transitions, 581 flow [2022-11-02 20:42:15,022 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=581, PETRI_PLACES=175, PETRI_TRANSITIONS=105} [2022-11-02 20:42:15,022 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 84 predicate places. [2022-11-02 20:42:15,023 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 105 transitions, 581 flow [2022-11-02 20:42:15,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:15,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:15,023 INFO L208 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] [2022-11-02 20:42:15,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-02 20:42:15,024 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:42:15,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:15,024 INFO L85 PathProgramCache]: Analyzing trace with hash 761649578, now seen corresponding path program 15 times [2022-11-02 20:42:15,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:15,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106161678] [2022-11-02 20:42:15,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:15,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:15,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:15,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:15,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:15,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106161678] [2022-11-02 20:42:15,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106161678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:15,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:15,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:42:15,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459818093] [2022-11-02 20:42:15,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:15,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:42:15,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:15,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:42:15,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:42:15,205 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-11-02 20:42:15,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 105 transitions, 581 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:15,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:15,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-11-02 20:42:15,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:15,504 INFO L130 PetriNetUnfolder]: 33/236 cut-off events. [2022-11-02 20:42:15,504 INFO L131 PetriNetUnfolder]: For 974/975 co-relation queries the response was YES. [2022-11-02 20:42:15,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 965 conditions, 236 events. 33/236 cut-off events. For 974/975 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 801 event pairs, 3 based on Foata normal form. 1/236 useless extension candidates. Maximal degree in co-relation 907. Up to 36 conditions per place. [2022-11-02 20:42:15,510 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 39 selfloop transitions, 22 changer transitions 29/145 dead transitions. [2022-11-02 20:42:15,511 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 145 transitions, 1121 flow [2022-11-02 20:42:15,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 20:42:15,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-02 20:42:15,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1083 transitions. [2022-11-02 20:42:15,513 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6636029411764706 [2022-11-02 20:42:15,513 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1083 transitions. [2022-11-02 20:42:15,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1083 transitions. [2022-11-02 20:42:15,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:15,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1083 transitions. [2022-11-02 20:42:15,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 67.6875) internal successors, (1083), 16 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:15,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 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) [2022-11-02 20:42:15,520 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 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) [2022-11-02 20:42:15,520 INFO L175 Difference]: Start difference. First operand has 175 places, 105 transitions, 581 flow. Second operand 16 states and 1083 transitions. [2022-11-02 20:42:15,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 145 transitions, 1121 flow [2022-11-02 20:42:15,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 145 transitions, 978 flow, removed 46 selfloop flow, removed 17 redundant places. [2022-11-02 20:42:15,529 INFO L231 Difference]: Finished difference. Result has 169 places, 110 transitions, 628 flow [2022-11-02 20:42:15,529 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=628, PETRI_PLACES=169, PETRI_TRANSITIONS=110} [2022-11-02 20:42:15,530 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 78 predicate places. [2022-11-02 20:42:15,530 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 110 transitions, 628 flow [2022-11-02 20:42:15,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:15,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:15,531 INFO L208 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] [2022-11-02 20:42:15,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-02 20:42:15,531 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:42:15,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:15,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1632435518, now seen corresponding path program 16 times [2022-11-02 20:42:15,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:15,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52262339] [2022-11-02 20:42:15,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:15,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:15,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:15,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:15,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:15,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52262339] [2022-11-02 20:42:15,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52262339] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:15,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:15,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:42:15,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239364845] [2022-11-02 20:42:15,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:15,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:42:15,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:15,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:42:15,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:42:15,726 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-11-02 20:42:15,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 110 transitions, 628 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:15,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:15,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-11-02 20:42:15,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:16,002 INFO L130 PetriNetUnfolder]: 24/202 cut-off events. [2022-11-02 20:42:16,002 INFO L131 PetriNetUnfolder]: For 635/636 co-relation queries the response was YES. [2022-11-02 20:42:16,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 781 conditions, 202 events. 24/202 cut-off events. For 635/636 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 581 event pairs, 3 based on Foata normal form. 1/202 useless extension candidates. Maximal degree in co-relation 728. Up to 30 conditions per place. [2022-11-02 20:42:16,004 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 35 selfloop transitions, 10 changer transitions 34/134 dead transitions. [2022-11-02 20:42:16,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 134 transitions, 945 flow [2022-11-02 20:42:16,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:42:16,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:42:16,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1205 transitions. [2022-11-02 20:42:16,007 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.656318082788671 [2022-11-02 20:42:16,007 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1205 transitions. [2022-11-02 20:42:16,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1205 transitions. [2022-11-02 20:42:16,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:16,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1205 transitions. [2022-11-02 20:42:16,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 66.94444444444444) internal successors, (1205), 18 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:16,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:16,012 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:16,013 INFO L175 Difference]: Start difference. First operand has 169 places, 110 transitions, 628 flow. Second operand 18 states and 1205 transitions. [2022-11-02 20:42:16,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 134 transitions, 945 flow [2022-11-02 20:42:16,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 134 transitions, 841 flow, removed 30 selfloop flow, removed 10 redundant places. [2022-11-02 20:42:16,020 INFO L231 Difference]: Finished difference. Result has 176 places, 95 transitions, 428 flow [2022-11-02 20:42:16,020 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=428, PETRI_PLACES=176, PETRI_TRANSITIONS=95} [2022-11-02 20:42:16,020 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 85 predicate places. [2022-11-02 20:42:16,021 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 95 transitions, 428 flow [2022-11-02 20:42:16,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:16,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:16,021 INFO L208 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] [2022-11-02 20:42:16,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-02 20:42:16,022 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:42:16,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:16,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1459226864, now seen corresponding path program 17 times [2022-11-02 20:42:16,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:16,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458286341] [2022-11-02 20:42:16,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:16,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:16,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:16,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:16,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458286341] [2022-11-02 20:42:16,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458286341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:16,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:16,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:42:16,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632682502] [2022-11-02 20:42:16,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:16,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:42:16,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:16,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:42:16,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:42:16,191 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-11-02 20:42:16,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 95 transitions, 428 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:16,192 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:16,192 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-11-02 20:42:16,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:16,495 INFO L130 PetriNetUnfolder]: 29/211 cut-off events. [2022-11-02 20:42:16,495 INFO L131 PetriNetUnfolder]: For 705/706 co-relation queries the response was YES. [2022-11-02 20:42:16,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 809 conditions, 211 events. 29/211 cut-off events. For 705/706 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 627 event pairs, 4 based on Foata normal form. 1/210 useless extension candidates. Maximal degree in co-relation 756. Up to 30 conditions per place. [2022-11-02 20:42:16,498 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 33 selfloop transitions, 20 changer transitions 27/135 dead transitions. [2022-11-02 20:42:16,498 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 135 transitions, 948 flow [2022-11-02 20:42:16,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:42:16,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:42:16,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1210 transitions. [2022-11-02 20:42:16,500 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.659041394335512 [2022-11-02 20:42:16,501 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1210 transitions. [2022-11-02 20:42:16,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1210 transitions. [2022-11-02 20:42:16,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:16,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1210 transitions. [2022-11-02 20:42:16,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.22222222222223) internal successors, (1210), 18 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:16,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:16,506 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:16,506 INFO L175 Difference]: Start difference. First operand has 176 places, 95 transitions, 428 flow. Second operand 18 states and 1210 transitions. [2022-11-02 20:42:16,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 135 transitions, 948 flow [2022-11-02 20:42:16,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 135 transitions, 802 flow, removed 25 selfloop flow, removed 18 redundant places. [2022-11-02 20:42:16,512 INFO L231 Difference]: Finished difference. Result has 161 places, 104 transitions, 541 flow [2022-11-02 20:42:16,513 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=541, PETRI_PLACES=161, PETRI_TRANSITIONS=104} [2022-11-02 20:42:16,513 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 70 predicate places. [2022-11-02 20:42:16,513 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 104 transitions, 541 flow [2022-11-02 20:42:16,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:16,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:16,514 INFO L208 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] [2022-11-02 20:42:16,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-02 20:42:16,515 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:42:16,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:16,515 INFO L85 PathProgramCache]: Analyzing trace with hash 901113930, now seen corresponding path program 18 times [2022-11-02 20:42:16,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:16,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870080686] [2022-11-02 20:42:16,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:16,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:16,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:16,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:16,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870080686] [2022-11-02 20:42:16,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870080686] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:16,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:16,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:42:16,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718186532] [2022-11-02 20:42:16,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:16,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:42:16,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:16,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:42:16,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:42:16,691 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-11-02 20:42:16,692 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 104 transitions, 541 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:16,692 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:16,692 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-11-02 20:42:16,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:17,005 INFO L130 PetriNetUnfolder]: 25/209 cut-off events. [2022-11-02 20:42:17,005 INFO L131 PetriNetUnfolder]: For 494/495 co-relation queries the response was YES. [2022-11-02 20:42:17,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 758 conditions, 209 events. 25/209 cut-off events. For 494/495 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 618 event pairs, 0 based on Foata normal form. 1/210 useless extension candidates. Maximal degree in co-relation 709. Up to 30 conditions per place. [2022-11-02 20:42:17,007 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 34 selfloop transitions, 22 changer transitions 28/139 dead transitions. [2022-11-02 20:42:17,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 139 transitions, 995 flow [2022-11-02 20:42:17,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:42:17,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-02 20:42:17,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1146 transitions. [2022-11-02 20:42:17,010 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6608996539792388 [2022-11-02 20:42:17,010 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1146 transitions. [2022-11-02 20:42:17,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1146 transitions. [2022-11-02 20:42:17,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:17,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1146 transitions. [2022-11-02 20:42:17,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.41176470588235) internal successors, (1146), 17 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:17,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:17,015 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:17,015 INFO L175 Difference]: Start difference. First operand has 161 places, 104 transitions, 541 flow. Second operand 17 states and 1146 transitions. [2022-11-02 20:42:17,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 139 transitions, 995 flow [2022-11-02 20:42:17,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 139 transitions, 914 flow, removed 36 selfloop flow, removed 5 redundant places. [2022-11-02 20:42:17,021 INFO L231 Difference]: Finished difference. Result has 173 places, 108 transitions, 623 flow [2022-11-02 20:42:17,021 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=623, PETRI_PLACES=173, PETRI_TRANSITIONS=108} [2022-11-02 20:42:17,022 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 82 predicate places. [2022-11-02 20:42:17,022 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 108 transitions, 623 flow [2022-11-02 20:42:17,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:17,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:17,023 INFO L208 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] [2022-11-02 20:42:17,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-11-02 20:42:17,023 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:42:17,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:17,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1360922724, now seen corresponding path program 19 times [2022-11-02 20:42:17,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:17,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622621805] [2022-11-02 20:42:17,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:17,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:17,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:17,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:17,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:17,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622621805] [2022-11-02 20:42:17,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622621805] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:17,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:17,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:42:17,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607720653] [2022-11-02 20:42:17,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:17,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:42:17,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:17,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:42:17,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:42:17,198 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-11-02 20:42:17,198 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 108 transitions, 623 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:17,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:17,199 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-11-02 20:42:17,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:17,448 INFO L130 PetriNetUnfolder]: 19/194 cut-off events. [2022-11-02 20:42:17,448 INFO L131 PetriNetUnfolder]: For 449/450 co-relation queries the response was YES. [2022-11-02 20:42:17,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 716 conditions, 194 events. 19/194 cut-off events. For 449/450 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 535 event pairs, 0 based on Foata normal form. 1/195 useless extension candidates. Maximal degree in co-relation 661. Up to 30 conditions per place. [2022-11-02 20:42:17,450 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 33 selfloop transitions, 12 changer transitions 33/133 dead transitions. [2022-11-02 20:42:17,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 133 transitions, 964 flow [2022-11-02 20:42:17,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:42:17,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-02 20:42:17,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1141 transitions. [2022-11-02 20:42:17,453 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6580161476355249 [2022-11-02 20:42:17,453 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1141 transitions. [2022-11-02 20:42:17,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1141 transitions. [2022-11-02 20:42:17,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:17,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1141 transitions. [2022-11-02 20:42:17,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.11764705882354) internal successors, (1141), 17 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:17,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:17,458 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:17,459 INFO L175 Difference]: Start difference. First operand has 173 places, 108 transitions, 623 flow. Second operand 17 states and 1141 transitions. [2022-11-02 20:42:17,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 133 transitions, 964 flow [2022-11-02 20:42:17,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 133 transitions, 863 flow, removed 30 selfloop flow, removed 9 redundant places. [2022-11-02 20:42:17,466 INFO L231 Difference]: Finished difference. Result has 179 places, 99 transitions, 478 flow [2022-11-02 20:42:17,467 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=478, PETRI_PLACES=179, PETRI_TRANSITIONS=99} [2022-11-02 20:42:17,467 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 88 predicate places. [2022-11-02 20:42:17,467 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 99 transitions, 478 flow [2022-11-02 20:42:17,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:17,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:17,468 INFO L208 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] [2022-11-02 20:42:17,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-11-02 20:42:17,468 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:42:17,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:17,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1378187606, now seen corresponding path program 20 times [2022-11-02 20:42:17,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:17,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102644291] [2022-11-02 20:42:17,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:17,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:17,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:17,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:17,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:17,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102644291] [2022-11-02 20:42:17,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102644291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:17,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:17,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:42:17,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877844629] [2022-11-02 20:42:17,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:17,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:42:17,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:17,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:42:17,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:42:17,666 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-11-02 20:42:17,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 99 transitions, 478 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:17,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:17,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-11-02 20:42:17,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:17,933 INFO L130 PetriNetUnfolder]: 11/122 cut-off events. [2022-11-02 20:42:17,934 INFO L131 PetriNetUnfolder]: For 248/249 co-relation queries the response was YES. [2022-11-02 20:42:17,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 442 conditions, 122 events. 11/122 cut-off events. For 248/249 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 210 event pairs, 1 based on Foata normal form. 1/122 useless extension candidates. Maximal degree in co-relation 387. Up to 12 conditions per place. [2022-11-02 20:42:17,935 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 0 selfloop transitions, 0 changer transitions 94/94 dead transitions. [2022-11-02 20:42:17,935 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 94 transitions, 590 flow [2022-11-02 20:42:17,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:42:17,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:42:17,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1178 transitions. [2022-11-02 20:42:17,937 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6416122004357299 [2022-11-02 20:42:17,937 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1178 transitions. [2022-11-02 20:42:17,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1178 transitions. [2022-11-02 20:42:17,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:17,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1178 transitions. [2022-11-02 20:42:17,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 65.44444444444444) internal successors, (1178), 18 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:17,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:17,942 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:17,943 INFO L175 Difference]: Start difference. First operand has 179 places, 99 transitions, 478 flow. Second operand 18 states and 1178 transitions. [2022-11-02 20:42:17,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 94 transitions, 590 flow [2022-11-02 20:42:17,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 94 transitions, 480 flow, removed 24 selfloop flow, removed 23 redundant places. [2022-11-02 20:42:17,947 INFO L231 Difference]: Finished difference. Result has 148 places, 0 transitions, 0 flow [2022-11-02 20:42:17,947 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=0, PETRI_PLACES=148, PETRI_TRANSITIONS=0} [2022-11-02 20:42:17,947 INFO L287 CegarLoopForPetriNet]: 91 programPoint places, 57 predicate places. [2022-11-02 20:42:17,948 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 0 transitions, 0 flow [2022-11-02 20:42:17,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:17,951 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-11-02 20:42:17,952 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-11-02 20:42:17,952 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-11-02 20:42:17,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-11-02 20:42:17,953 INFO L444 BasicCegarLoop]: Path program histogram: [20, 20, 2, 2, 1, 1, 1] [2022-11-02 20:42:17,956 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-02 20:42:17,957 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:42:17,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:42:17 BasicIcfg [2022-11-02 20:42:17,962 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:42:17,963 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:42:17,963 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:42:17,963 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:42:17,964 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:41:49" (3/4) ... [2022-11-02 20:42:17,968 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-02 20:42:17,975 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-02 20:42:17,975 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-02 20:42:17,982 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-11-02 20:42:17,982 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-02 20:42:17,982 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-02 20:42:17,983 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-02 20:42:18,024 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7191fb8c-2f1f-4c22-abee-4ae16be3d4a4/bin/uautomizer-Dbtcem3rbc/witness.graphml [2022-11-02 20:42:18,024 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:42:18,026 INFO L158 Benchmark]: Toolchain (without parser) took 29436.44ms. Allocated memory was 107.0MB in the beginning and 287.3MB in the end (delta: 180.4MB). Free memory was 68.2MB in the beginning and 239.8MB in the end (delta: -171.6MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. [2022-11-02 20:42:18,026 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 107.0MB. Free memory is still 84.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:42:18,026 INFO L158 Benchmark]: CACSL2BoogieTranslator took 289.56ms. Allocated memory is still 107.0MB. Free memory was 68.0MB in the beginning and 82.5MB in the end (delta: -14.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 20:42:18,027 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.20ms. Allocated memory is still 107.0MB. Free memory was 82.5MB in the beginning and 80.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:42:18,027 INFO L158 Benchmark]: Boogie Preprocessor took 31.07ms. Allocated memory is still 107.0MB. Free memory was 80.9MB in the beginning and 79.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:42:18,027 INFO L158 Benchmark]: RCFGBuilder took 433.90ms. Allocated memory is still 107.0MB. Free memory was 79.6MB in the beginning and 66.9MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-02 20:42:18,028 INFO L158 Benchmark]: TraceAbstraction took 28553.95ms. Allocated memory was 107.0MB in the beginning and 287.3MB in the end (delta: 180.4MB). Free memory was 66.2MB in the beginning and 242.9MB in the end (delta: -176.7MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2022-11-02 20:42:18,028 INFO L158 Benchmark]: Witness Printer took 61.22ms. Allocated memory is still 287.3MB. Free memory was 242.9MB in the beginning and 239.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 20:42:18,030 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 107.0MB. Free memory is still 84.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 289.56ms. Allocated memory is still 107.0MB. Free memory was 68.0MB in the beginning and 82.5MB in the end (delta: -14.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.20ms. Allocated memory is still 107.0MB. Free memory was 82.5MB in the beginning and 80.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.07ms. Allocated memory is still 107.0MB. Free memory was 80.9MB in the beginning and 79.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 433.90ms. Allocated memory is still 107.0MB. Free memory was 79.6MB in the beginning and 66.9MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 28553.95ms. Allocated memory was 107.0MB in the beginning and 287.3MB in the end (delta: 180.4MB). Free memory was 66.2MB in the beginning and 242.9MB in the end (delta: -176.7MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. * Witness Printer took 61.22ms. Allocated memory is still 287.3MB. Free memory was 242.9MB in the beginning and 239.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 69]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 122 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 28.3s, OverallIterations: 47, TraceHistogramMax: 1, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 17.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1853 SdHoareTripleChecker+Valid, 4.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1853 mSDsluCounter, 8802 SdHoareTripleChecker+Invalid, 4.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8645 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7419 IncrementalHoareTripleChecker+Invalid, 7448 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 1737 mSDtfsCounter, 7419 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1016 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 871 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3614 ImplicationChecksByTransitivity, 9.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1071occurred in iteration=14, InterpolantAutomatonStates: 803, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 9.2s InterpolantComputationTime, 3611 NumberOfCodeBlocks, 3611 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 3564 ConstructedInterpolants, 0 QuantifiedInterpolants, 13720 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 47 InterpolantComputations, 47 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-02 20:42:18,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7191fb8c-2f1f-4c22-abee-4ae16be3d4a4/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE