./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-exp-term-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_87a982fc-c096-4c08-84e8-ff7bf3b24c22/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a982fc-c096-4c08-84e8-ff7bf3b24c22/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_87a982fc-c096-4c08-84e8-ff7bf3b24c22/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a982fc-c096-4c08-84e8-ff7bf3b24c22/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a982fc-c096-4c08-84e8-ff7bf3b24c22/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_87a982fc-c096-4c08-84e8-ff7bf3b24c22/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 79419a4ba87d66b20bd1eac3a57771b6df78d8c052d6832c2c2f61b321d58321 --- 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 20:51:16,713 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:51:16,717 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:51:16,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:51:16,774 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:51:16,777 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:51:16,779 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:51:16,782 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:51:16,786 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:51:16,787 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:51:16,789 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:51:16,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:51:16,793 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:51:16,797 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:51:16,798 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:51:16,801 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:51:16,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:51:16,811 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:51:16,813 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:51:16,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:51:16,822 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:51:16,827 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:51:16,829 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:51:16,831 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:51:16,835 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:51:16,840 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:51:16,840 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:51:16,841 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:51:16,843 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:51:16,844 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:51:16,845 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:51:16,846 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:51:16,848 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:51:16,850 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:51:16,851 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:51:16,852 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:51:16,852 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:51:16,853 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:51:16,853 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:51:16,854 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:51:16,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:51:16,856 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a982fc-c096-4c08-84e8-ff7bf3b24c22/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:51:16,899 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:51:16,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:51:16,900 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:51:16,900 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:51:16,901 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:51:16,902 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:51:16,903 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:51:16,903 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:51:16,903 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:51:16,903 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:51:16,905 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:51:16,905 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:51:16,905 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:51:16,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:51:16,906 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:51:16,906 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:51:16,906 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:51:16,907 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:51:16,907 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:51:16,907 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:51:16,907 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:51:16,908 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:51:16,908 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:51:16,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:51:16,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:51:16,909 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:51:16,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:51:16,911 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:51:16,911 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:51:16,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:51:16,912 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:51:16,912 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:51:16,913 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:51:16,913 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_87a982fc-c096-4c08-84e8-ff7bf3b24c22/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a982fc-c096-4c08-84e8-ff7bf3b24c22/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79419a4ba87d66b20bd1eac3a57771b6df78d8c052d6832c2c2f61b321d58321 [2022-11-02 20:51:17,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:51:17,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:51:17,250 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:51:17,251 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:51:17,252 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:51:17,254 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a982fc-c096-4c08-84e8-ff7bf3b24c22/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c [2022-11-02 20:51:17,338 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a982fc-c096-4c08-84e8-ff7bf3b24c22/bin/uautomizer-Dbtcem3rbc/data/055fab77c/44a6e0fd7dd34cb5b3d7b1ba8d7c193a/FLAG157848c5d [2022-11-02 20:51:17,984 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:51:17,985 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a982fc-c096-4c08-84e8-ff7bf3b24c22/sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c [2022-11-02 20:51:17,992 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a982fc-c096-4c08-84e8-ff7bf3b24c22/bin/uautomizer-Dbtcem3rbc/data/055fab77c/44a6e0fd7dd34cb5b3d7b1ba8d7c193a/FLAG157848c5d [2022-11-02 20:51:18,317 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a982fc-c096-4c08-84e8-ff7bf3b24c22/bin/uautomizer-Dbtcem3rbc/data/055fab77c/44a6e0fd7dd34cb5b3d7b1ba8d7c193a [2022-11-02 20:51:18,321 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:51:18,322 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:51:18,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:51:18,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:51:18,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:51:18,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:51:18" (1/1) ... [2022-11-02 20:51:18,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77235e26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:18, skipping insertion in model container [2022-11-02 20:51:18,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:51:18" (1/1) ... [2022-11-02 20:51:18,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:51:18,359 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:51:18,601 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_87a982fc-c096-4c08-84e8-ff7bf3b24c22/sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c[2628,2641] [2022-11-02 20:51:18,608 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:51:18,618 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:51:18,645 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_87a982fc-c096-4c08-84e8-ff7bf3b24c22/sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c[2628,2641] [2022-11-02 20:51:18,648 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:51:18,664 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:51:18,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:18 WrapperNode [2022-11-02 20:51:18,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:51:18,666 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:51:18,667 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:51:18,667 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:51:18,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:18" (1/1) ... [2022-11-02 20:51:18,685 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:18" (1/1) ... [2022-11-02 20:51:18,712 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 128 [2022-11-02 20:51:18,712 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:51:18,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:51:18,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:51:18,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:51:18,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:18" (1/1) ... [2022-11-02 20:51:18,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:18" (1/1) ... [2022-11-02 20:51:18,729 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:18" (1/1) ... [2022-11-02 20:51:18,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:18" (1/1) ... [2022-11-02 20:51:18,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:18" (1/1) ... [2022-11-02 20:51:18,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:18" (1/1) ... [2022-11-02 20:51:18,747 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:18" (1/1) ... [2022-11-02 20:51:18,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:18" (1/1) ... [2022-11-02 20:51:18,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:51:18,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:51:18,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:51:18,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:51:18,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:18" (1/1) ... [2022-11-02 20:51:18,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:51:18,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a982fc-c096-4c08-84e8-ff7bf3b24c22/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:18,812 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a982fc-c096-4c08-84e8-ff7bf3b24c22/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:18,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a982fc-c096-4c08-84e8-ff7bf3b24c22/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:51:18,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:51:18,876 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 20:51:18,876 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 20:51:18,876 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 20:51:18,877 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 20:51:18,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:51:18,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:51:18,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:51:18,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:51:18,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:51:18,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:51:18,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:51:18,881 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 20:51:19,028 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:51:19,031 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:51:19,387 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:51:19,397 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:51:19,397 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:51:19,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:51:19 BoogieIcfgContainer [2022-11-02 20:51:19,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:51:19,403 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:51:19,403 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:51:19,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:51:19,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:51:18" (1/3) ... [2022-11-02 20:51:19,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef5e0a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:51:19, skipping insertion in model container [2022-11-02 20:51:19,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:18" (2/3) ... [2022-11-02 20:51:19,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef5e0a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:51:19, skipping insertion in model container [2022-11-02 20:51:19,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:51:19" (3/3) ... [2022-11-02 20:51:19,410 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-exp-term-symm.wvr.c [2022-11-02 20:51:19,420 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:51:19,432 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:51:19,432 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:51:19,432 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:51:19,564 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 20:51:19,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 174 transitions, 364 flow [2022-11-02 20:51:19,780 INFO L130 PetriNetUnfolder]: 13/172 cut-off events. [2022-11-02 20:51:19,781 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:51:19,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 172 events. 13/172 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 282 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2022-11-02 20:51:19,787 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 174 transitions, 364 flow [2022-11-02 20:51:19,794 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 163 transitions, 338 flow [2022-11-02 20:51:19,821 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:51:19,830 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;@4e7126, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:51:19,830 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-02 20:51:19,887 INFO L130 PetriNetUnfolder]: 13/162 cut-off events. [2022-11-02 20:51:19,887 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:51:19,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:19,888 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:19,889 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 20:51:19,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:19,896 INFO L85 PathProgramCache]: Analyzing trace with hash 972755305, now seen corresponding path program 1 times [2022-11-02 20:51:19,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:19,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024028819] [2022-11-02 20:51:19,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:19,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:20,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:20,694 INFO 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 20:51:20,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:20,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024028819] [2022-11-02 20:51:20,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024028819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:20,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:20,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:51:20,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962661121] [2022-11-02 20:51:20,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:20,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:51:20,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:20,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:51:20,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:51:20,758 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 174 [2022-11-02 20:51:20,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 163 transitions, 338 flow. Second operand has 8 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states 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 20:51:20,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:20,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 174 [2022-11-02 20:51:20,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:21,184 INFO L130 PetriNetUnfolder]: 61/487 cut-off events. [2022-11-02 20:51:21,185 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-11-02 20:51:21,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 682 conditions, 487 events. 61/487 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2509 event pairs, 15 based on Foata normal form. 25/470 useless extension candidates. Maximal degree in co-relation 446. Up to 45 conditions per place. [2022-11-02 20:51:21,194 INFO L137 encePairwiseOnDemand]: 153/174 looper letters, 48 selfloop transitions, 13 changer transitions 28/216 dead transitions. [2022-11-02 20:51:21,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 216 transitions, 643 flow [2022-11-02 20:51:21,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:51:21,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-02 20:51:21,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1892 transitions. [2022-11-02 20:51:21,233 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8364279398762158 [2022-11-02 20:51:21,234 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1892 transitions. [2022-11-02 20:51:21,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1892 transitions. [2022-11-02 20:51:21,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:21,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1892 transitions. [2022-11-02 20:51:21,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 145.53846153846155) internal successors, (1892), 13 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:21,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 174.0) internal successors, (2436), 14 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states 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 20:51:21,272 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 174.0) internal successors, (2436), 14 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states 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 20:51:21,275 INFO L175 Difference]: Start difference. First operand has 157 places, 163 transitions, 338 flow. Second operand 13 states and 1892 transitions. [2022-11-02 20:51:21,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 216 transitions, 643 flow [2022-11-02 20:51:21,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 216 transitions, 621 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 20:51:21,302 INFO L231 Difference]: Finished difference. Result has 171 places, 164 transitions, 395 flow [2022-11-02 20:51:21,306 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=395, PETRI_PLACES=171, PETRI_TRANSITIONS=164} [2022-11-02 20:51:21,312 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 14 predicate places. [2022-11-02 20:51:21,313 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 164 transitions, 395 flow [2022-11-02 20:51:21,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states 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 20:51:21,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:21,314 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:21,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:51:21,315 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 20:51:21,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:21,317 INFO L85 PathProgramCache]: Analyzing trace with hash 52861613, now seen corresponding path program 1 times [2022-11-02 20:51:21,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:21,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723224764] [2022-11-02 20:51:21,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:21,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:21,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:21,683 INFO 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 20:51:21,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:21,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723224764] [2022-11-02 20:51:21,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723224764] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:21,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:21,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:51:21,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456008847] [2022-11-02 20:51:21,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:21,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:51:21,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:21,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:51:21,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:51:21,697 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-11-02 20:51:21,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 164 transitions, 395 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states 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 20:51:21,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:21,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-11-02 20:51:21,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:21,954 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([450] L50-17-->L50-18: Formula: (= |v_thread2Thread1of1ForFork1_#t~ite8#1_3| v_~result_5~0_1) InVars {thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_3|} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][91], [171#true, Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), 44#L44-18true, Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 193#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 195#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 12#L50-18true, Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), 206#(= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)), 108#L65-4true]) [2022-11-02 20:51:21,954 INFO L383 tUnfolder$Statistics]: this new event has 76 ancestors and is cut-off event [2022-11-02 20:51:21,954 INFO L386 tUnfolder$Statistics]: existing Event has 48 ancestors and is cut-off event [2022-11-02 20:51:21,955 INFO L386 tUnfolder$Statistics]: existing Event has 54 ancestors and is cut-off event [2022-11-02 20:51:21,955 INFO L386 tUnfolder$Statistics]: existing Event has 52 ancestors and is cut-off event [2022-11-02 20:51:21,971 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([405] L44-17-->L44-18: Formula: (= v_~result_4~0_1 |v_thread1Thread1of1ForFork0_#t~ite4#1_3|) InVars {thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} OutVars{~result_4~0=v_~result_4~0_1, thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} AuxVars[] AssignedVars[~result_4~0][118], [171#true, Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), 44#L44-18true, Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 193#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 12#L50-18true, Black: 195#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), 206#(= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)), 108#L65-4true]) [2022-11-02 20:51:21,972 INFO L383 tUnfolder$Statistics]: this new event has 74 ancestors and is cut-off event [2022-11-02 20:51:21,972 INFO L386 tUnfolder$Statistics]: existing Event has 54 ancestors and is cut-off event [2022-11-02 20:51:21,973 INFO L386 tUnfolder$Statistics]: existing Event has 52 ancestors and is cut-off event [2022-11-02 20:51:21,973 INFO L386 tUnfolder$Statistics]: existing Event has 76 ancestors and is cut-off event [2022-11-02 20:51:21,974 INFO L381 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([450] L50-17-->L50-18: Formula: (= |v_thread2Thread1of1ForFork1_#t~ite8#1_3| v_~result_5~0_1) InVars {thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_3|} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][91], [171#true, Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), 44#L44-18true, Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 193#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 12#L50-18true, Black: 195#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), 206#(= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)), 108#L65-4true]) [2022-11-02 20:51:21,975 INFO L383 tUnfolder$Statistics]: this new event has 74 ancestors and is cut-off event [2022-11-02 20:51:21,975 INFO L386 tUnfolder$Statistics]: existing Event has 48 ancestors and is cut-off event [2022-11-02 20:51:21,975 INFO L386 tUnfolder$Statistics]: existing Event has 54 ancestors and is cut-off event [2022-11-02 20:51:21,975 INFO L386 tUnfolder$Statistics]: existing Event has 52 ancestors and is cut-off event [2022-11-02 20:51:21,976 INFO L386 tUnfolder$Statistics]: existing Event has 76 ancestors and is cut-off event [2022-11-02 20:51:22,015 INFO L130 PetriNetUnfolder]: 107/1019 cut-off events. [2022-11-02 20:51:22,025 INFO L131 PetriNetUnfolder]: For 90/97 co-relation queries the response was YES. [2022-11-02 20:51:22,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1460 conditions, 1019 events. 107/1019 cut-off events. For 90/97 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 7624 event pairs, 15 based on Foata normal form. 3/925 useless extension candidates. Maximal degree in co-relation 1431. Up to 90 conditions per place. [2022-11-02 20:51:22,033 INFO L137 encePairwiseOnDemand]: 162/174 looper letters, 31 selfloop transitions, 12 changer transitions 1/188 dead transitions. [2022-11-02 20:51:22,037 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 188 transitions, 537 flow [2022-11-02 20:51:22,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:51:22,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-02 20:51:22,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 630 transitions. [2022-11-02 20:51:22,040 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9051724137931034 [2022-11-02 20:51:22,041 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 630 transitions. [2022-11-02 20:51:22,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 630 transitions. [2022-11-02 20:51:22,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:22,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 630 transitions. [2022-11-02 20:51:22,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 157.5) internal successors, (630), 4 states have internal predecessors, (630), 0 states have call successors, (0), 0 states 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 20:51:22,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states 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 20:51:22,046 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states 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 20:51:22,046 INFO L175 Difference]: Start difference. First operand has 171 places, 164 transitions, 395 flow. Second operand 4 states and 630 transitions. [2022-11-02 20:51:22,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 188 transitions, 537 flow [2022-11-02 20:51:22,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 188 transitions, 531 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-11-02 20:51:22,061 INFO L231 Difference]: Finished difference. Result has 165 places, 174 transitions, 477 flow [2022-11-02 20:51:22,062 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=477, PETRI_PLACES=165, PETRI_TRANSITIONS=174} [2022-11-02 20:51:22,063 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 8 predicate places. [2022-11-02 20:51:22,063 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 174 transitions, 477 flow [2022-11-02 20:51:22,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states 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 20:51:22,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:22,064 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:22,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:51:22,065 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 20:51:22,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:22,072 INFO L85 PathProgramCache]: Analyzing trace with hash -2140914997, now seen corresponding path program 1 times [2022-11-02 20:51:22,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:22,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405715115] [2022-11-02 20:51:22,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:22,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:22,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:22,283 INFO 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 20:51:22,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:22,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405715115] [2022-11-02 20:51:22,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405715115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:22,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:22,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:51:22,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749390503] [2022-11-02 20:51:22,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:22,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:51:22,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:22,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:51:22,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:51:22,293 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-11-02 20:51:22,294 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 174 transitions, 477 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states 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 20:51:22,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:22,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-11-02 20:51:22,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:22,579 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([450] L50-17-->L50-18: Formula: (= |v_thread2Thread1of1ForFork1_#t~ite8#1_3| v_~result_5~0_1) InVars {thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_3|} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][87], [214#(and (or (not (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))) (or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), Black: 205#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), 171#true, Black: 203#true, Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), 44#L44-18true, 12#L50-18true, Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), 206#(= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), 108#L65-4true]) [2022-11-02 20:51:22,579 INFO L383 tUnfolder$Statistics]: this new event has 76 ancestors and is cut-off event [2022-11-02 20:51:22,579 INFO L386 tUnfolder$Statistics]: existing Event has 48 ancestors and is cut-off event [2022-11-02 20:51:22,580 INFO L386 tUnfolder$Statistics]: existing Event has 54 ancestors and is cut-off event [2022-11-02 20:51:22,580 INFO L386 tUnfolder$Statistics]: existing Event has 52 ancestors and is cut-off event [2022-11-02 20:51:22,583 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([405] L44-17-->L44-18: Formula: (= v_~result_4~0_1 |v_thread1Thread1of1ForFork0_#t~ite4#1_3|) InVars {thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} OutVars{~result_4~0=v_~result_4~0_1, thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} AuxVars[] AssignedVars[~result_4~0][133], [Black: 205#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), 214#(and (or (not (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))) (or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), 171#true, Black: 203#true, Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), 44#L44-18true, 12#L50-18true, Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), 206#(= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), 108#L65-4true]) [2022-11-02 20:51:22,583 INFO L383 tUnfolder$Statistics]: this new event has 74 ancestors and is cut-off event [2022-11-02 20:51:22,584 INFO L386 tUnfolder$Statistics]: existing Event has 76 ancestors and is cut-off event [2022-11-02 20:51:22,584 INFO L386 tUnfolder$Statistics]: existing Event has 54 ancestors and is cut-off event [2022-11-02 20:51:22,584 INFO L386 tUnfolder$Statistics]: existing Event has 52 ancestors and is cut-off event [2022-11-02 20:51:22,588 INFO L381 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([450] L50-17-->L50-18: Formula: (= |v_thread2Thread1of1ForFork1_#t~ite8#1_3| v_~result_5~0_1) InVars {thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_3|} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][87], [Black: 205#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), 214#(and (or (not (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))) (or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), 171#true, Black: 203#true, Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), 44#L44-18true, 12#L50-18true, Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), 206#(= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), 108#L65-4true]) [2022-11-02 20:51:22,588 INFO L383 tUnfolder$Statistics]: this new event has 74 ancestors and is cut-off event [2022-11-02 20:51:22,588 INFO L386 tUnfolder$Statistics]: existing Event has 48 ancestors and is cut-off event [2022-11-02 20:51:22,588 INFO L386 tUnfolder$Statistics]: existing Event has 54 ancestors and is cut-off event [2022-11-02 20:51:22,589 INFO L386 tUnfolder$Statistics]: existing Event has 76 ancestors and is cut-off event [2022-11-02 20:51:22,589 INFO L386 tUnfolder$Statistics]: existing Event has 52 ancestors and is cut-off event [2022-11-02 20:51:22,647 INFO L130 PetriNetUnfolder]: 97/1196 cut-off events. [2022-11-02 20:51:22,648 INFO L131 PetriNetUnfolder]: For 147/156 co-relation queries the response was YES. [2022-11-02 20:51:22,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1751 conditions, 1196 events. 97/1196 cut-off events. For 147/156 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 8898 event pairs, 19 based on Foata normal form. 10/1141 useless extension candidates. Maximal degree in co-relation 1184. Up to 80 conditions per place. [2022-11-02 20:51:22,658 INFO L137 encePairwiseOnDemand]: 164/174 looper letters, 43 selfloop transitions, 11 changer transitions 3/201 dead transitions. [2022-11-02 20:51:22,658 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 201 transitions, 703 flow [2022-11-02 20:51:22,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:51:22,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-02 20:51:22,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 626 transitions. [2022-11-02 20:51:22,661 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8994252873563219 [2022-11-02 20:51:22,661 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 626 transitions. [2022-11-02 20:51:22,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 626 transitions. [2022-11-02 20:51:22,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:22,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 626 transitions. [2022-11-02 20:51:22,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.5) internal successors, (626), 4 states have internal predecessors, (626), 0 states have call successors, (0), 0 states 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 20:51:22,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states 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 20:51:22,667 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states 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 20:51:22,667 INFO L175 Difference]: Start difference. First operand has 165 places, 174 transitions, 477 flow. Second operand 4 states and 626 transitions. [2022-11-02 20:51:22,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 201 transitions, 703 flow [2022-11-02 20:51:22,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 201 transitions, 703 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:51:22,679 INFO L231 Difference]: Finished difference. Result has 171 places, 182 transitions, 579 flow [2022-11-02 20:51:22,679 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=579, PETRI_PLACES=171, PETRI_TRANSITIONS=182} [2022-11-02 20:51:22,682 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 14 predicate places. [2022-11-02 20:51:22,682 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 182 transitions, 579 flow [2022-11-02 20:51:22,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states 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 20:51:22,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:22,683 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:22,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:51:22,684 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 20:51:22,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:22,685 INFO L85 PathProgramCache]: Analyzing trace with hash 2029871769, now seen corresponding path program 2 times [2022-11-02 20:51:22,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:22,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276127412] [2022-11-02 20:51:22,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:22,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:22,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:22,804 INFO 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 20:51:22,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:22,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276127412] [2022-11-02 20:51:22,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276127412] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:22,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:22,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:51:22,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515776528] [2022-11-02 20:51:22,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:22,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:51:22,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:22,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:51:22,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:51:22,818 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-11-02 20:51:22,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 182 transitions, 579 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states 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 20:51:22,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:22,819 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-11-02 20:51:22,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:23,051 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([405] L44-17-->L44-18: Formula: (= v_~result_4~0_1 |v_thread1Thread1of1ForFork0_#t~ite4#1_3|) InVars {thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} OutVars{~result_4~0=v_~result_4~0_1, thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} AuxVars[] AssignedVars[~result_4~0][133], [Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), 44#L44-18true, Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), 108#L65-4true, Black: 205#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), 214#(and (or (not (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))) (or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), 171#true, Black: 203#true, 12#L50-18true, Black: 211#true, 206#(= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)), Black: 213#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256))), 222#(= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256))]) [2022-11-02 20:51:23,052 INFO L383 tUnfolder$Statistics]: this new event has 76 ancestors and is cut-off event [2022-11-02 20:51:23,052 INFO L386 tUnfolder$Statistics]: existing Event has 76 ancestors and is cut-off event [2022-11-02 20:51:23,052 INFO L386 tUnfolder$Statistics]: existing Event has 74 ancestors and is cut-off event [2022-11-02 20:51:23,052 INFO L386 tUnfolder$Statistics]: existing Event has 74 ancestors and is cut-off event [2022-11-02 20:51:23,058 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([450] L50-17-->L50-18: Formula: (= |v_thread2Thread1of1ForFork1_#t~ite8#1_3| v_~result_5~0_1) InVars {thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_3|} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][95], [Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), 44#L44-18true, Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), 108#L65-4true, 214#(and (or (not (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))) (or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), Black: 205#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), 171#true, Black: 203#true, 12#L50-18true, Black: 211#true, Black: 213#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256))), 206#(= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)), 222#(= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256))]) [2022-11-02 20:51:23,058 INFO L383 tUnfolder$Statistics]: this new event has 74 ancestors and is not cut-off event [2022-11-02 20:51:23,058 INFO L386 tUnfolder$Statistics]: existing Event has 74 ancestors and is not cut-off event [2022-11-02 20:51:23,058 INFO L386 tUnfolder$Statistics]: existing Event has 76 ancestors and is not cut-off event [2022-11-02 20:51:23,058 INFO L386 tUnfolder$Statistics]: existing Event has 76 ancestors and is not cut-off event [2022-11-02 20:51:23,100 INFO L130 PetriNetUnfolder]: 87/1345 cut-off events. [2022-11-02 20:51:23,101 INFO L131 PetriNetUnfolder]: For 295/302 co-relation queries the response was YES. [2022-11-02 20:51:23,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2011 conditions, 1345 events. 87/1345 cut-off events. For 295/302 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 10410 event pairs, 16 based on Foata normal form. 14/1302 useless extension candidates. Maximal degree in co-relation 1398. Up to 97 conditions per place. [2022-11-02 20:51:23,109 INFO L137 encePairwiseOnDemand]: 163/174 looper letters, 42 selfloop transitions, 13 changer transitions 3/202 dead transitions. [2022-11-02 20:51:23,109 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 202 transitions, 795 flow [2022-11-02 20:51:23,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:51:23,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-02 20:51:23,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 624 transitions. [2022-11-02 20:51:23,112 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.896551724137931 [2022-11-02 20:51:23,112 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 624 transitions. [2022-11-02 20:51:23,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 624 transitions. [2022-11-02 20:51:23,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:23,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 624 transitions. [2022-11-02 20:51:23,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states 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 20:51:23,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states 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 20:51:23,117 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states 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 20:51:23,118 INFO L175 Difference]: Start difference. First operand has 171 places, 182 transitions, 579 flow. Second operand 4 states and 624 transitions. [2022-11-02 20:51:23,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 202 transitions, 795 flow [2022-11-02 20:51:23,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 202 transitions, 795 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:51:23,126 INFO L231 Difference]: Finished difference. Result has 176 places, 188 transitions, 679 flow [2022-11-02 20:51:23,126 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=679, PETRI_PLACES=176, PETRI_TRANSITIONS=188} [2022-11-02 20:51:23,128 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 19 predicate places. [2022-11-02 20:51:23,128 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 188 transitions, 679 flow [2022-11-02 20:51:23,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states 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 20:51:23,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:23,128 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:23,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:51:23,129 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 20:51:23,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:23,130 INFO L85 PathProgramCache]: Analyzing trace with hash 777655661, now seen corresponding path program 2 times [2022-11-02 20:51:23,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:23,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226627409] [2022-11-02 20:51:23,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:23,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:23,322 INFO 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 20:51:23,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:23,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226627409] [2022-11-02 20:51:23,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226627409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:23,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:23,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:51:23,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722326342] [2022-11-02 20:51:23,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:23,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:51:23,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:23,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:51:23,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:51:23,326 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-11-02 20:51:23,327 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 188 transitions, 679 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states 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 20:51:23,327 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:23,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-11-02 20:51:23,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:23,535 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([405] L44-17-->L44-18: Formula: (= v_~result_4~0_1 |v_thread1Thread1of1ForFork0_#t~ite4#1_3|) InVars {thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} OutVars{~result_4~0=v_~result_4~0_1, thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} AuxVars[] AssignedVars[~result_4~0][138], [Black: 221#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256))), Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), 44#L44-18true, 229#(= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)), Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), 108#L65-4true, Black: 205#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), 214#(and (or (not (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))) (or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), 171#true, Black: 203#true, 12#L50-18true, Black: 211#true, 206#(= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)), Black: 213#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256))), 222#(= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256))]) [2022-11-02 20:51:23,536 INFO L383 tUnfolder$Statistics]: this new event has 76 ancestors and is cut-off event [2022-11-02 20:51:23,536 INFO L386 tUnfolder$Statistics]: existing Event has 76 ancestors and is cut-off event [2022-11-02 20:51:23,536 INFO L386 tUnfolder$Statistics]: existing Event has 74 ancestors and is cut-off event [2022-11-02 20:51:23,536 INFO L386 tUnfolder$Statistics]: existing Event has 74 ancestors and is cut-off event [2022-11-02 20:51:23,541 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([450] L50-17-->L50-18: Formula: (= |v_thread2Thread1of1ForFork1_#t~ite8#1_3| v_~result_5~0_1) InVars {thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_3|} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][93], [Black: 221#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256))), Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), 44#L44-18true, 229#(= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)), Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), 108#L65-4true, Black: 205#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), 214#(and (or (not (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))) (or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), 171#true, Black: 203#true, 12#L50-18true, Black: 211#true, Black: 213#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256))), 206#(= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)), 222#(= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256))]) [2022-11-02 20:51:23,541 INFO L383 tUnfolder$Statistics]: this new event has 74 ancestors and is not cut-off event [2022-11-02 20:51:23,542 INFO L386 tUnfolder$Statistics]: existing Event has 76 ancestors and is not cut-off event [2022-11-02 20:51:23,542 INFO L386 tUnfolder$Statistics]: existing Event has 76 ancestors and is not cut-off event [2022-11-02 20:51:23,542 INFO L386 tUnfolder$Statistics]: existing Event has 74 ancestors and is not cut-off event [2022-11-02 20:51:23,580 INFO L130 PetriNetUnfolder]: 78/1126 cut-off events. [2022-11-02 20:51:23,581 INFO L131 PetriNetUnfolder]: For 393/400 co-relation queries the response was YES. [2022-11-02 20:51:23,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1790 conditions, 1126 events. 78/1126 cut-off events. For 393/400 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 8075 event pairs, 18 based on Foata normal form. 8/1084 useless extension candidates. Maximal degree in co-relation 1282. Up to 100 conditions per place. [2022-11-02 20:51:23,589 INFO L137 encePairwiseOnDemand]: 162/174 looper letters, 40 selfloop transitions, 16 changer transitions 5/203 dead transitions. [2022-11-02 20:51:23,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 203 transitions, 873 flow [2022-11-02 20:51:23,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:51:23,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-02 20:51:23,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 624 transitions. [2022-11-02 20:51:23,592 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.896551724137931 [2022-11-02 20:51:23,592 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 624 transitions. [2022-11-02 20:51:23,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 624 transitions. [2022-11-02 20:51:23,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:23,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 624 transitions. [2022-11-02 20:51:23,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states 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 20:51:23,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states 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 20:51:23,598 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states 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 20:51:23,598 INFO L175 Difference]: Start difference. First operand has 176 places, 188 transitions, 679 flow. Second operand 4 states and 624 transitions. [2022-11-02 20:51:23,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 203 transitions, 873 flow [2022-11-02 20:51:23,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 203 transitions, 858 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:51:23,606 INFO L231 Difference]: Finished difference. Result has 179 places, 189 transitions, 749 flow [2022-11-02 20:51:23,607 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=749, PETRI_PLACES=179, PETRI_TRANSITIONS=189} [2022-11-02 20:51:23,610 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 22 predicate places. [2022-11-02 20:51:23,611 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 189 transitions, 749 flow [2022-11-02 20:51:23,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states 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 20:51:23,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:23,612 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:23,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:51:23,612 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 20:51:23,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:23,614 INFO L85 PathProgramCache]: Analyzing trace with hash -882261451, now seen corresponding path program 3 times [2022-11-02 20:51:23,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:23,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594213171] [2022-11-02 20:51:23,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:23,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:23,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:23,730 INFO 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 20:51:23,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:23,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594213171] [2022-11-02 20:51:23,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594213171] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:23,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:23,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:51:23,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404392416] [2022-11-02 20:51:23,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:23,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:51:23,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:23,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:51:23,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:51:23,736 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-11-02 20:51:23,737 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 189 transitions, 749 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states 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 20:51:23,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:23,737 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-11-02 20:51:23,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:24,040 INFO L130 PetriNetUnfolder]: 71/1200 cut-off events. [2022-11-02 20:51:24,041 INFO L131 PetriNetUnfolder]: For 514/518 co-relation queries the response was YES. [2022-11-02 20:51:24,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1887 conditions, 1200 events. 71/1200 cut-off events. For 514/518 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 8715 event pairs, 16 based on Foata normal form. 5/1163 useless extension candidates. Maximal degree in co-relation 1399. Up to 68 conditions per place. [2022-11-02 20:51:24,049 INFO L137 encePairwiseOnDemand]: 161/174 looper letters, 45 selfloop transitions, 21 changer transitions 3/211 dead transitions. [2022-11-02 20:51:24,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 211 transitions, 986 flow [2022-11-02 20:51:24,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:51:24,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 20:51:24,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 782 transitions. [2022-11-02 20:51:24,052 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8988505747126436 [2022-11-02 20:51:24,052 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 782 transitions. [2022-11-02 20:51:24,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 782 transitions. [2022-11-02 20:51:24,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:24,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 782 transitions. [2022-11-02 20:51:24,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 156.4) internal successors, (782), 5 states have internal predecessors, (782), 0 states have call successors, (0), 0 states 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 20:51:24,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states 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 20:51:24,057 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states 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 20:51:24,057 INFO L175 Difference]: Start difference. First operand has 179 places, 189 transitions, 749 flow. Second operand 5 states and 782 transitions. [2022-11-02 20:51:24,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 211 transitions, 986 flow [2022-11-02 20:51:24,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 211 transitions, 969 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:51:24,065 INFO L231 Difference]: Finished difference. Result has 183 places, 195 transitions, 862 flow [2022-11-02 20:51:24,066 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=862, PETRI_PLACES=183, PETRI_TRANSITIONS=195} [2022-11-02 20:51:24,068 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 26 predicate places. [2022-11-02 20:51:24,068 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 195 transitions, 862 flow [2022-11-02 20:51:24,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states 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 20:51:24,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:24,069 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:24,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:51:24,070 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 20:51:24,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:24,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1798058324, now seen corresponding path program 1 times [2022-11-02 20:51:24,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:24,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170646509] [2022-11-02 20:51:24,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:24,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:24,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:24,435 INFO 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 20:51:24,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:24,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170646509] [2022-11-02 20:51:24,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170646509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:24,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:24,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:51:24,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297278237] [2022-11-02 20:51:24,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:24,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:51:24,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:24,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:51:24,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:51:24,446 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:51:24,449 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 195 transitions, 862 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:51:24,449 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:24,449 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:51:24,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:25,513 INFO L130 PetriNetUnfolder]: 366/1808 cut-off events. [2022-11-02 20:51:25,514 INFO L131 PetriNetUnfolder]: For 766/811 co-relation queries the response was YES. [2022-11-02 20:51:25,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3520 conditions, 1808 events. 366/1808 cut-off events. For 766/811 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 14150 event pairs, 173 based on Foata normal form. 2/1735 useless extension candidates. Maximal degree in co-relation 2315. Up to 673 conditions per place. [2022-11-02 20:51:25,534 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 101 selfloop transitions, 6 changer transitions 46/302 dead transitions. [2022-11-02 20:51:25,535 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 302 transitions, 1466 flow [2022-11-02 20:51:25,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-02 20:51:25,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-02 20:51:25,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3982 transitions. [2022-11-02 20:51:25,545 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7628352490421456 [2022-11-02 20:51:25,546 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3982 transitions. [2022-11-02 20:51:25,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3982 transitions. [2022-11-02 20:51:25,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:25,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3982 transitions. [2022-11-02 20:51:25,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 132.73333333333332) internal successors, (3982), 30 states have internal predecessors, (3982), 0 states have call successors, (0), 0 states 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 20:51:25,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states 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 20:51:25,575 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states 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 20:51:25,575 INFO L175 Difference]: Start difference. First operand has 183 places, 195 transitions, 862 flow. Second operand 30 states and 3982 transitions. [2022-11-02 20:51:25,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 302 transitions, 1466 flow [2022-11-02 20:51:25,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 302 transitions, 1452 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-02 20:51:25,588 INFO L231 Difference]: Finished difference. Result has 239 places, 200 transitions, 974 flow [2022-11-02 20:51:25,589 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=848, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=974, PETRI_PLACES=239, PETRI_TRANSITIONS=200} [2022-11-02 20:51:25,590 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 82 predicate places. [2022-11-02 20:51:25,590 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 200 transitions, 974 flow [2022-11-02 20:51:25,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:51:25,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:25,591 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:25,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:51:25,592 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 20:51:25,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:25,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1264232724, now seen corresponding path program 1 times [2022-11-02 20:51:25,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:25,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232560337] [2022-11-02 20:51:25,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:25,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:25,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:25,954 INFO 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 20:51:25,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:25,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232560337] [2022-11-02 20:51:25,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232560337] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:25,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:25,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:51:25,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574267850] [2022-11-02 20:51:25,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:25,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:51:25,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:25,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:51:25,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:51:25,960 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:51:25,962 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 200 transitions, 974 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:51:25,962 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:25,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:51:25,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:27,205 INFO L130 PetriNetUnfolder]: 382/1949 cut-off events. [2022-11-02 20:51:27,205 INFO L131 PetriNetUnfolder]: For 5904/5972 co-relation queries the response was YES. [2022-11-02 20:51:27,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5919 conditions, 1949 events. 382/1949 cut-off events. For 5904/5972 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 15445 event pairs, 212 based on Foata normal form. 2/1879 useless extension candidates. Maximal degree in co-relation 5662. Up to 731 conditions per place. [2022-11-02 20:51:27,235 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 109 selfloop transitions, 8 changer transitions 48/314 dead transitions. [2022-11-02 20:51:27,235 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 314 transitions, 2127 flow [2022-11-02 20:51:27,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-02 20:51:27,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-02 20:51:27,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4117 transitions. [2022-11-02 20:51:27,248 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7632554690396737 [2022-11-02 20:51:27,248 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 4117 transitions. [2022-11-02 20:51:27,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 4117 transitions. [2022-11-02 20:51:27,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:27,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 4117 transitions. [2022-11-02 20:51:27,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 132.80645161290323) internal successors, (4117), 31 states have internal predecessors, (4117), 0 states have call successors, (0), 0 states 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 20:51:27,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states 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 20:51:27,333 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states 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 20:51:27,334 INFO L175 Difference]: Start difference. First operand has 239 places, 200 transitions, 974 flow. Second operand 31 states and 4117 transitions. [2022-11-02 20:51:27,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 314 transitions, 2127 flow [2022-11-02 20:51:27,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 314 transitions, 1970 flow, removed 78 selfloop flow, removed 12 redundant places. [2022-11-02 20:51:27,378 INFO L231 Difference]: Finished difference. Result has 263 places, 207 transitions, 1125 flow [2022-11-02 20:51:27,378 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=949, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1125, PETRI_PLACES=263, PETRI_TRANSITIONS=207} [2022-11-02 20:51:27,381 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 106 predicate places. [2022-11-02 20:51:27,381 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 207 transitions, 1125 flow [2022-11-02 20:51:27,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:51:27,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:27,383 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:27,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:51:27,383 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 20:51:27,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:27,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1087007612, now seen corresponding path program 2 times [2022-11-02 20:51:27,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:27,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873750352] [2022-11-02 20:51:27,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:27,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:27,761 INFO 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 20:51:27,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:27,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873750352] [2022-11-02 20:51:27,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873750352] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:27,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:27,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:51:27,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14358046] [2022-11-02 20:51:27,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:27,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:51:27,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:27,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:51:27,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:51:27,767 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:51:27,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 207 transitions, 1125 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:51:27,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:27,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:51:27,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:28,967 INFO L130 PetriNetUnfolder]: 447/2072 cut-off events. [2022-11-02 20:51:28,968 INFO L131 PetriNetUnfolder]: For 14875/14940 co-relation queries the response was YES. [2022-11-02 20:51:28,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8185 conditions, 2072 events. 447/2072 cut-off events. For 14875/14940 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 16343 event pairs, 271 based on Foata normal form. 24/2007 useless extension candidates. Maximal degree in co-relation 8001. Up to 884 conditions per place. [2022-11-02 20:51:29,006 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 98 selfloop transitions, 15 changer transitions 32/295 dead transitions. [2022-11-02 20:51:29,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 295 transitions, 2304 flow [2022-11-02 20:51:29,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:51:29,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-02 20:51:29,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2926 transitions. [2022-11-02 20:51:29,017 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.764367816091954 [2022-11-02 20:51:29,018 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2926 transitions. [2022-11-02 20:51:29,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2926 transitions. [2022-11-02 20:51:29,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:29,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2926 transitions. [2022-11-02 20:51:29,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 133.0) internal successors, (2926), 22 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states 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 20:51:29,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states 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 20:51:29,064 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states 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 20:51:29,064 INFO L175 Difference]: Start difference. First operand has 263 places, 207 transitions, 1125 flow. Second operand 22 states and 2926 transitions. [2022-11-02 20:51:29,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 295 transitions, 2304 flow [2022-11-02 20:51:29,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 295 transitions, 2013 flow, removed 145 selfloop flow, removed 19 redundant places. [2022-11-02 20:51:29,174 INFO L231 Difference]: Finished difference. Result has 262 places, 221 transitions, 1273 flow [2022-11-02 20:51:29,175 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1273, PETRI_PLACES=262, PETRI_TRANSITIONS=221} [2022-11-02 20:51:29,176 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 105 predicate places. [2022-11-02 20:51:29,176 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 221 transitions, 1273 flow [2022-11-02 20:51:29,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:51:29,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:29,177 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:29,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:51:29,178 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 20:51:29,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:29,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1507504170, now seen corresponding path program 2 times [2022-11-02 20:51:29,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:29,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893601037] [2022-11-02 20:51:29,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:29,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:29,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:29,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:29,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:29,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893601037] [2022-11-02 20:51:29,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893601037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:29,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:29,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:51:29,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157938077] [2022-11-02 20:51:29,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:29,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:51:29,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:29,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:51:29,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:51:29,538 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:51:29,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 221 transitions, 1273 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:51:29,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:29,541 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:51:29,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:30,711 INFO L130 PetriNetUnfolder]: 444/2089 cut-off events. [2022-11-02 20:51:30,711 INFO L131 PetriNetUnfolder]: For 12202/12280 co-relation queries the response was YES. [2022-11-02 20:51:30,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8314 conditions, 2089 events. 444/2089 cut-off events. For 12202/12280 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 16701 event pairs, 268 based on Foata normal form. 7/2016 useless extension candidates. Maximal degree in co-relation 8038. Up to 917 conditions per place. [2022-11-02 20:51:30,749 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 100 selfloop transitions, 17 changer transitions 40/307 dead transitions. [2022-11-02 20:51:30,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 307 transitions, 2557 flow [2022-11-02 20:51:30,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-02 20:51:30,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-02 20:51:30,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3708 transitions. [2022-11-02 20:51:30,759 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7610837438423645 [2022-11-02 20:51:30,759 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3708 transitions. [2022-11-02 20:51:30,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3708 transitions. [2022-11-02 20:51:30,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:30,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3708 transitions. [2022-11-02 20:51:30,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.42857142857142) internal successors, (3708), 28 states have internal predecessors, (3708), 0 states have call successors, (0), 0 states 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 20:51:30,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states 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 20:51:30,788 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states 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 20:51:30,789 INFO L175 Difference]: Start difference. First operand has 262 places, 221 transitions, 1273 flow. Second operand 28 states and 3708 transitions. [2022-11-02 20:51:30,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 307 transitions, 2557 flow [2022-11-02 20:51:30,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 307 transitions, 2461 flow, removed 48 selfloop flow, removed 8 redundant places. [2022-11-02 20:51:30,923 INFO L231 Difference]: Finished difference. Result has 285 places, 235 transitions, 1477 flow [2022-11-02 20:51:30,925 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1229, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1477, PETRI_PLACES=285, PETRI_TRANSITIONS=235} [2022-11-02 20:51:30,926 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 128 predicate places. [2022-11-02 20:51:30,926 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 235 transitions, 1477 flow [2022-11-02 20:51:30,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:51:30,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:30,927 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:30,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:51:30,928 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 20:51:30,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:30,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1546058506, now seen corresponding path program 3 times [2022-11-02 20:51:30,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:30,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057721656] [2022-11-02 20:51:30,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:30,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:30,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:31,239 INFO 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 20:51:31,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:31,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057721656] [2022-11-02 20:51:31,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057721656] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:31,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:31,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:51:31,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271356239] [2022-11-02 20:51:31,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:31,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:51:31,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:31,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:51:31,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:51:31,248 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:51:31,250 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 235 transitions, 1477 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:51:31,250 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:31,250 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:51:31,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:32,607 INFO L130 PetriNetUnfolder]: 503/2244 cut-off events. [2022-11-02 20:51:32,607 INFO L131 PetriNetUnfolder]: For 20001/20062 co-relation queries the response was YES. [2022-11-02 20:51:32,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9941 conditions, 2244 events. 503/2244 cut-off events. For 20001/20062 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 17932 event pairs, 286 based on Foata normal form. 20/2173 useless extension candidates. Maximal degree in co-relation 9746. Up to 927 conditions per place. [2022-11-02 20:51:32,655 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 121 selfloop transitions, 19 changer transitions 33/324 dead transitions. [2022-11-02 20:51:32,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 324 transitions, 2991 flow [2022-11-02 20:51:32,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:51:32,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-02 20:51:32,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3061 transitions. [2022-11-02 20:51:32,669 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7648675662168916 [2022-11-02 20:51:32,669 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3061 transitions. [2022-11-02 20:51:32,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3061 transitions. [2022-11-02 20:51:32,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:32,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3061 transitions. [2022-11-02 20:51:32,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 133.08695652173913) internal successors, (3061), 23 states have internal predecessors, (3061), 0 states have call successors, (0), 0 states 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 20:51:32,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states 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 20:51:32,699 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states 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 20:51:32,699 INFO L175 Difference]: Start difference. First operand has 285 places, 235 transitions, 1477 flow. Second operand 23 states and 3061 transitions. [2022-11-02 20:51:32,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 324 transitions, 2991 flow [2022-11-02 20:51:32,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 324 transitions, 2727 flow, removed 132 selfloop flow, removed 11 redundant places. [2022-11-02 20:51:32,881 INFO L231 Difference]: Finished difference. Result has 295 places, 251 transitions, 1660 flow [2022-11-02 20:51:32,882 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1365, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1660, PETRI_PLACES=295, PETRI_TRANSITIONS=251} [2022-11-02 20:51:32,882 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 138 predicate places. [2022-11-02 20:51:32,883 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 251 transitions, 1660 flow [2022-11-02 20:51:32,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:51:32,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:32,884 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:32,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:51:32,884 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 20:51:32,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:32,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1206343116, now seen corresponding path program 4 times [2022-11-02 20:51:32,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:32,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623952376] [2022-11-02 20:51:32,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:32,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:32,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:33,219 INFO 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 20:51:33,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:33,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623952376] [2022-11-02 20:51:33,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623952376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:33,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:33,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:51:33,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104355033] [2022-11-02 20:51:33,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:33,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:51:33,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:33,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:51:33,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:51:33,225 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:51:33,227 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 251 transitions, 1660 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:51:33,227 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:33,227 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:51:33,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:34,340 INFO L130 PetriNetUnfolder]: 514/2300 cut-off events. [2022-11-02 20:51:34,340 INFO L131 PetriNetUnfolder]: For 22158/22228 co-relation queries the response was YES. [2022-11-02 20:51:34,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10417 conditions, 2300 events. 514/2300 cut-off events. For 22158/22228 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 18522 event pairs, 278 based on Foata normal form. 20/2226 useless extension candidates. Maximal degree in co-relation 10135. Up to 1005 conditions per place. [2022-11-02 20:51:34,378 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 116 selfloop transitions, 29 changer transitions 25/321 dead transitions. [2022-11-02 20:51:34,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 321 transitions, 2964 flow [2022-11-02 20:51:34,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:51:34,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-02 20:51:34,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2529 transitions. [2022-11-02 20:51:34,383 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.76497277676951 [2022-11-02 20:51:34,383 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2529 transitions. [2022-11-02 20:51:34,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2529 transitions. [2022-11-02 20:51:34,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:34,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2529 transitions. [2022-11-02 20:51:34,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.10526315789474) internal successors, (2529), 19 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states 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 20:51:34,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states 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 20:51:34,397 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states 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 20:51:34,397 INFO L175 Difference]: Start difference. First operand has 295 places, 251 transitions, 1660 flow. Second operand 19 states and 2529 transitions. [2022-11-02 20:51:34,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 321 transitions, 2964 flow [2022-11-02 20:51:34,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 321 transitions, 2756 flow, removed 104 selfloop flow, removed 10 redundant places. [2022-11-02 20:51:34,522 INFO L231 Difference]: Finished difference. Result has 303 places, 265 transitions, 1919 flow [2022-11-02 20:51:34,522 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1590, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1919, PETRI_PLACES=303, PETRI_TRANSITIONS=265} [2022-11-02 20:51:34,523 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 146 predicate places. [2022-11-02 20:51:34,524 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 265 transitions, 1919 flow [2022-11-02 20:51:34,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:51:34,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:34,526 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:34,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:51:34,526 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 20:51:34,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:34,527 INFO L85 PathProgramCache]: Analyzing trace with hash -896304812, now seen corresponding path program 5 times [2022-11-02 20:51:34,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:34,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529273821] [2022-11-02 20:51:34,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:34,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:34,894 INFO 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 20:51:34,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:34,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529273821] [2022-11-02 20:51:34,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529273821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:34,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:34,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:51:34,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146263555] [2022-11-02 20:51:34,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:34,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:51:34,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:34,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:51:34,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:51:34,899 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:51:34,901 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 265 transitions, 1919 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:51:34,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:34,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:51:34,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:35,981 INFO L130 PetriNetUnfolder]: 512/2268 cut-off events. [2022-11-02 20:51:35,982 INFO L131 PetriNetUnfolder]: For 22148/22215 co-relation queries the response was YES. [2022-11-02 20:51:36,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10557 conditions, 2268 events. 512/2268 cut-off events. For 22148/22215 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 18120 event pairs, 293 based on Foata normal form. 21/2197 useless extension candidates. Maximal degree in co-relation 10270. Up to 1006 conditions per place. [2022-11-02 20:51:36,101 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 123 selfloop transitions, 31 changer transitions 25/330 dead transitions. [2022-11-02 20:51:36,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 330 transitions, 3216 flow [2022-11-02 20:51:36,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:51:36,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-02 20:51:36,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2532 transitions. [2022-11-02 20:51:36,110 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7658802177858439 [2022-11-02 20:51:36,110 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2532 transitions. [2022-11-02 20:51:36,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2532 transitions. [2022-11-02 20:51:36,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:36,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2532 transitions. [2022-11-02 20:51:36,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.26315789473685) internal successors, (2532), 19 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states 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 20:51:36,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states 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 20:51:36,124 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states 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 20:51:36,125 INFO L175 Difference]: Start difference. First operand has 303 places, 265 transitions, 1919 flow. Second operand 19 states and 2532 transitions. [2022-11-02 20:51:36,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 330 transitions, 3216 flow [2022-11-02 20:51:36,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 330 transitions, 2974 flow, removed 92 selfloop flow, removed 9 redundant places. [2022-11-02 20:51:36,263 INFO L231 Difference]: Finished difference. Result has 318 places, 282 transitions, 2170 flow [2022-11-02 20:51:36,264 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1744, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2170, PETRI_PLACES=318, PETRI_TRANSITIONS=282} [2022-11-02 20:51:36,265 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 161 predicate places. [2022-11-02 20:51:36,265 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 282 transitions, 2170 flow [2022-11-02 20:51:36,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:51:36,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:36,266 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:36,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:51:36,266 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 20:51:36,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:36,267 INFO L85 PathProgramCache]: Analyzing trace with hash 923394942, now seen corresponding path program 3 times [2022-11-02 20:51:36,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:36,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554348129] [2022-11-02 20:51:36,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:36,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:36,556 INFO 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 20:51:36,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:36,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554348129] [2022-11-02 20:51:36,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554348129] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:36,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:36,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:51:36,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725693748] [2022-11-02 20:51:36,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:36,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:51:36,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:36,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:51:36,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:51:36,560 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:51:36,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 282 transitions, 2170 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:51:36,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:36,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:51:36,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:37,876 INFO L130 PetriNetUnfolder]: 523/2320 cut-off events. [2022-11-02 20:51:37,877 INFO L131 PetriNetUnfolder]: For 27916/27993 co-relation queries the response was YES. [2022-11-02 20:51:37,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11372 conditions, 2320 events. 523/2320 cut-off events. For 27916/27993 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 18702 event pairs, 283 based on Foata normal form. 8/2246 useless extension candidates. Maximal degree in co-relation 11121. Up to 1049 conditions per place. [2022-11-02 20:51:37,925 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 146 selfloop transitions, 23 changer transitions 40/364 dead transitions. [2022-11-02 20:51:37,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 364 transitions, 3747 flow [2022-11-02 20:51:37,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-02 20:51:37,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-02 20:51:37,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3581 transitions. [2022-11-02 20:51:37,934 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7622392507449979 [2022-11-02 20:51:37,935 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3581 transitions. [2022-11-02 20:51:37,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3581 transitions. [2022-11-02 20:51:37,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:37,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3581 transitions. [2022-11-02 20:51:37,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.62962962962962) internal successors, (3581), 27 states have internal predecessors, (3581), 0 states have call successors, (0), 0 states 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 20:51:37,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states 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 20:51:38,094 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states 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 20:51:38,094 INFO L175 Difference]: Start difference. First operand has 318 places, 282 transitions, 2170 flow. Second operand 27 states and 3581 transitions. [2022-11-02 20:51:38,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 364 transitions, 3747 flow [2022-11-02 20:51:38,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 364 transitions, 3402 flow, removed 170 selfloop flow, removed 9 redundant places. [2022-11-02 20:51:38,268 INFO L231 Difference]: Finished difference. Result has 347 places, 295 transitions, 2221 flow [2022-11-02 20:51:38,268 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1963, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2221, PETRI_PLACES=347, PETRI_TRANSITIONS=295} [2022-11-02 20:51:38,269 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 190 predicate places. [2022-11-02 20:51:38,270 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 295 transitions, 2221 flow [2022-11-02 20:51:38,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:51:38,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:38,271 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:38,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 20:51:38,271 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 20:51:38,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:38,272 INFO L85 PathProgramCache]: Analyzing trace with hash 603735160, now seen corresponding path program 4 times [2022-11-02 20:51:38,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:38,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741106892] [2022-11-02 20:51:38,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:38,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:38,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:38,575 INFO 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 20:51:38,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:38,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741106892] [2022-11-02 20:51:38,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741106892] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:38,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:38,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:51:38,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68205328] [2022-11-02 20:51:38,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:38,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:51:38,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:38,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:51:38,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:51:38,578 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:51:38,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 295 transitions, 2221 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:51:38,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:38,580 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:51:38,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:39,802 INFO L130 PetriNetUnfolder]: 546/2374 cut-off events. [2022-11-02 20:51:39,802 INFO L131 PetriNetUnfolder]: For 36195/36281 co-relation queries the response was YES. [2022-11-02 20:51:39,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12441 conditions, 2374 events. 546/2374 cut-off events. For 36195/36281 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 19104 event pairs, 313 based on Foata normal form. 7/2294 useless extension candidates. Maximal degree in co-relation 12214. Up to 1063 conditions per place. [2022-11-02 20:51:39,859 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 150 selfloop transitions, 30 changer transitions 40/375 dead transitions. [2022-11-02 20:51:39,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 375 transitions, 4003 flow [2022-11-02 20:51:39,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-02 20:51:39,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-02 20:51:39,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3453 transitions. [2022-11-02 20:51:39,865 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.763262599469496 [2022-11-02 20:51:39,865 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3453 transitions. [2022-11-02 20:51:39,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3453 transitions. [2022-11-02 20:51:39,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:39,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3453 transitions. [2022-11-02 20:51:39,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.80769230769232) internal successors, (3453), 26 states have internal predecessors, (3453), 0 states have call successors, (0), 0 states 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 20:51:39,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states 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 20:51:39,883 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states 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 20:51:39,884 INFO L175 Difference]: Start difference. First operand has 347 places, 295 transitions, 2221 flow. Second operand 26 states and 3453 transitions. [2022-11-02 20:51:39,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 375 transitions, 4003 flow [2022-11-02 20:51:40,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 375 transitions, 3704 flow, removed 145 selfloop flow, removed 15 redundant places. [2022-11-02 20:51:40,112 INFO L231 Difference]: Finished difference. Result has 362 places, 310 transitions, 2490 flow [2022-11-02 20:51:40,113 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2147, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2490, PETRI_PLACES=362, PETRI_TRANSITIONS=310} [2022-11-02 20:51:40,113 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 205 predicate places. [2022-11-02 20:51:40,113 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 310 transitions, 2490 flow [2022-11-02 20:51:40,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:51:40,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:40,115 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:40,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 20:51:40,115 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 20:51:40,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:40,116 INFO L85 PathProgramCache]: Analyzing trace with hash 331886222, now seen corresponding path program 5 times [2022-11-02 20:51:40,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:40,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541842499] [2022-11-02 20:51:40,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:40,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:40,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:40,408 INFO 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 20:51:40,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:40,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541842499] [2022-11-02 20:51:40,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541842499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:40,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:40,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:51:40,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338412867] [2022-11-02 20:51:40,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:40,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:51:40,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:40,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:51:40,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:51:40,413 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:51:40,414 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 310 transitions, 2490 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:51:40,415 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:40,415 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:51:40,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:41,658 INFO L130 PetriNetUnfolder]: 542/2364 cut-off events. [2022-11-02 20:51:41,658 INFO L131 PetriNetUnfolder]: For 43675/43753 co-relation queries the response was YES. [2022-11-02 20:51:41,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13071 conditions, 2364 events. 542/2364 cut-off events. For 43675/43753 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 19251 event pairs, 289 based on Foata normal form. 9/2283 useless extension candidates. Maximal degree in co-relation 12836. Up to 1078 conditions per place. [2022-11-02 20:51:41,699 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 164 selfloop transitions, 33 changer transitions 52/404 dead transitions. [2022-11-02 20:51:41,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 404 transitions, 4487 flow [2022-11-02 20:51:41,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-02 20:51:41,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-02 20:51:41,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3447 transitions. [2022-11-02 20:51:41,706 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7619363395225465 [2022-11-02 20:51:41,706 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3447 transitions. [2022-11-02 20:51:41,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3447 transitions. [2022-11-02 20:51:41,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:41,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3447 transitions. [2022-11-02 20:51:41,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.57692307692307) internal successors, (3447), 26 states have internal predecessors, (3447), 0 states have call successors, (0), 0 states 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 20:51:41,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states 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 20:51:41,723 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states 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 20:51:41,724 INFO L175 Difference]: Start difference. First operand has 362 places, 310 transitions, 2490 flow. Second operand 26 states and 3447 transitions. [2022-11-02 20:51:41,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 404 transitions, 4487 flow [2022-11-02 20:51:42,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 404 transitions, 4143 flow, removed 165 selfloop flow, removed 15 redundant places. [2022-11-02 20:51:42,015 INFO L231 Difference]: Finished difference. Result has 377 places, 320 transitions, 2726 flow [2022-11-02 20:51:42,016 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2391, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2726, PETRI_PLACES=377, PETRI_TRANSITIONS=320} [2022-11-02 20:51:42,017 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 220 predicate places. [2022-11-02 20:51:42,019 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 320 transitions, 2726 flow [2022-11-02 20:51:42,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:51:42,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:42,020 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:42,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 20:51:42,021 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 20:51:42,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:42,022 INFO L85 PathProgramCache]: Analyzing trace with hash 596295764, now seen corresponding path program 6 times [2022-11-02 20:51:42,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:42,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865655949] [2022-11-02 20:51:42,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:42,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:42,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:42,336 INFO 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 20:51:42,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:42,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865655949] [2022-11-02 20:51:42,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865655949] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:42,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:42,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:51:42,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447135144] [2022-11-02 20:51:42,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:42,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:51:42,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:42,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:51:42,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:51:42,339 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:51:42,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 320 transitions, 2726 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:51:42,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:42,341 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:51:42,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:43,935 INFO L130 PetriNetUnfolder]: 539/2327 cut-off events. [2022-11-02 20:51:43,936 INFO L131 PetriNetUnfolder]: For 43804/43882 co-relation queries the response was YES. [2022-11-02 20:51:43,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12980 conditions, 2327 events. 539/2327 cut-off events. For 43804/43882 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 18695 event pairs, 289 based on Foata normal form. 7/2246 useless extension candidates. Maximal degree in co-relation 12738. Up to 1068 conditions per place. [2022-11-02 20:51:43,984 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 175 selfloop transitions, 37 changer transitions 40/407 dead transitions. [2022-11-02 20:51:43,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 407 transitions, 4761 flow [2022-11-02 20:51:43,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-02 20:51:43,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-02 20:51:43,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3320 transitions. [2022-11-02 20:51:43,992 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7632183908045977 [2022-11-02 20:51:43,992 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3320 transitions. [2022-11-02 20:51:43,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3320 transitions. [2022-11-02 20:51:43,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:43,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3320 transitions. [2022-11-02 20:51:44,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 132.8) internal successors, (3320), 25 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states 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 20:51:44,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states 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 20:51:44,013 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states 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 20:51:44,013 INFO L175 Difference]: Start difference. First operand has 377 places, 320 transitions, 2726 flow. Second operand 25 states and 3320 transitions. [2022-11-02 20:51:44,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 407 transitions, 4761 flow [2022-11-02 20:51:44,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 407 transitions, 4484 flow, removed 120 selfloop flow, removed 17 redundant places. [2022-11-02 20:51:44,348 INFO L231 Difference]: Finished difference. Result has 388 places, 336 transitions, 2999 flow [2022-11-02 20:51:44,350 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2605, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2999, PETRI_PLACES=388, PETRI_TRANSITIONS=336} [2022-11-02 20:51:44,351 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 231 predicate places. [2022-11-02 20:51:44,351 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 336 transitions, 2999 flow [2022-11-02 20:51:44,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:51:44,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:44,352 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:44,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 20:51:44,352 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 20:51:44,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:44,353 INFO L85 PathProgramCache]: Analyzing trace with hash 355013552, now seen corresponding path program 6 times [2022-11-02 20:51:44,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:44,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813953306] [2022-11-02 20:51:44,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:44,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:44,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:44,727 INFO 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 20:51:44,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:44,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813953306] [2022-11-02 20:51:44,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813953306] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:44,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:44,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:51:44,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443326315] [2022-11-02 20:51:44,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:44,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:51:44,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:44,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:51:44,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:51:44,732 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:51:44,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 336 transitions, 2999 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:51:44,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:44,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:51:44,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:46,447 INFO L130 PetriNetUnfolder]: 585/2535 cut-off events. [2022-11-02 20:51:46,447 INFO L131 PetriNetUnfolder]: For 48965/49047 co-relation queries the response was YES. [2022-11-02 20:51:46,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13977 conditions, 2535 events. 585/2535 cut-off events. For 48965/49047 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 20785 event pairs, 322 based on Foata normal form. 17/2451 useless extension candidates. Maximal degree in co-relation 13729. Up to 1109 conditions per place. [2022-11-02 20:51:46,504 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 184 selfloop transitions, 30 changer transitions 40/416 dead transitions. [2022-11-02 20:51:46,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 416 transitions, 4686 flow [2022-11-02 20:51:46,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-02 20:51:46,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-02 20:51:46,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3580 transitions. [2022-11-02 20:51:46,510 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7620263942103023 [2022-11-02 20:51:46,510 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3580 transitions. [2022-11-02 20:51:46,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3580 transitions. [2022-11-02 20:51:46,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:46,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3580 transitions. [2022-11-02 20:51:46,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.59259259259258) internal successors, (3580), 27 states have internal predecessors, (3580), 0 states have call successors, (0), 0 states 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 20:51:46,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states 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 20:51:46,532 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states 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 20:51:46,533 INFO L175 Difference]: Start difference. First operand has 388 places, 336 transitions, 2999 flow. Second operand 27 states and 3580 transitions. [2022-11-02 20:51:46,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 416 transitions, 4686 flow [2022-11-02 20:51:46,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 416 transitions, 4488 flow, removed 99 selfloop flow, removed 14 redundant places. [2022-11-02 20:51:46,859 INFO L231 Difference]: Finished difference. Result has 407 places, 347 transitions, 3178 flow [2022-11-02 20:51:46,860 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2873, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=3178, PETRI_PLACES=407, PETRI_TRANSITIONS=347} [2022-11-02 20:51:46,860 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 250 predicate places. [2022-11-02 20:51:46,861 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 347 transitions, 3178 flow [2022-11-02 20:51:46,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:51:46,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:46,861 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:46,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 20:51:46,862 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 20:51:46,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:46,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1478372794, now seen corresponding path program 7 times [2022-11-02 20:51:46,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:46,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260686654] [2022-11-02 20:51:46,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:46,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:46,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:47,207 INFO 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 20:51:47,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:47,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260686654] [2022-11-02 20:51:47,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260686654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:47,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:47,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:51:47,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671109952] [2022-11-02 20:51:47,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:47,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:51:47,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:47,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:51:47,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:51:47,213 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:51:47,215 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 347 transitions, 3178 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:51:47,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:47,216 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:51:47,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:49,071 INFO L130 PetriNetUnfolder]: 546/2454 cut-off events. [2022-11-02 20:51:49,071 INFO L131 PetriNetUnfolder]: For 48118/48200 co-relation queries the response was YES. [2022-11-02 20:51:49,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13651 conditions, 2454 events. 546/2454 cut-off events. For 48118/48200 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 20238 event pairs, 269 based on Foata normal form. 7/2380 useless extension candidates. Maximal degree in co-relation 13300. Up to 1022 conditions per place. [2022-11-02 20:51:49,171 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 250 selfloop transitions, 37 changer transitions 59/505 dead transitions. [2022-11-02 20:51:49,171 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 505 transitions, 5779 flow [2022-11-02 20:51:49,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-02 20:51:49,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-02 20:51:49,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3981 transitions. [2022-11-02 20:51:49,181 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7626436781609195 [2022-11-02 20:51:49,182 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3981 transitions. [2022-11-02 20:51:49,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3981 transitions. [2022-11-02 20:51:49,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:49,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3981 transitions. [2022-11-02 20:51:49,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 132.7) internal successors, (3981), 30 states have internal predecessors, (3981), 0 states have call successors, (0), 0 states 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 20:51:49,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states 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 20:51:49,205 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states 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 20:51:49,205 INFO L175 Difference]: Start difference. First operand has 407 places, 347 transitions, 3178 flow. Second operand 30 states and 3981 transitions. [2022-11-02 20:51:49,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 505 transitions, 5779 flow [2022-11-02 20:51:49,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 505 transitions, 5644 flow, removed 54 selfloop flow, removed 18 redundant places. [2022-11-02 20:51:49,613 INFO L231 Difference]: Finished difference. Result has 426 places, 351 transitions, 3392 flow [2022-11-02 20:51:49,614 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3079, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=3392, PETRI_PLACES=426, PETRI_TRANSITIONS=351} [2022-11-02 20:51:49,614 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 269 predicate places. [2022-11-02 20:51:49,615 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 351 transitions, 3392 flow [2022-11-02 20:51:49,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:51:49,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:49,615 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:49,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-02 20:51:49,616 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 20:51:49,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:49,617 INFO L85 PathProgramCache]: Analyzing trace with hash 2036999710, now seen corresponding path program 8 times [2022-11-02 20:51:49,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:49,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167269013] [2022-11-02 20:51:49,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:49,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:49,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:49,905 INFO 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 20:51:49,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:49,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167269013] [2022-11-02 20:51:49,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167269013] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:49,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:49,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:51:49,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248151136] [2022-11-02 20:51:49,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:49,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:51:49,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:49,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:51:49,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:51:49,909 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:51:49,910 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 351 transitions, 3392 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:51:49,911 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:49,911 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:51:49,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:51,077 INFO L130 PetriNetUnfolder]: 538/2423 cut-off events. [2022-11-02 20:51:51,077 INFO L131 PetriNetUnfolder]: For 51347/51429 co-relation queries the response was YES. [2022-11-02 20:51:51,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13961 conditions, 2423 events. 538/2423 cut-off events. For 51347/51429 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 19897 event pairs, 287 based on Foata normal form. 9/2344 useless extension candidates. Maximal degree in co-relation 13683. Up to 1117 conditions per place. [2022-11-02 20:51:51,118 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 194 selfloop transitions, 39 changer transitions 33/425 dead transitions. [2022-11-02 20:51:51,119 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 425 transitions, 5292 flow [2022-11-02 20:51:51,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:51:51,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:51:51,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2403 transitions. [2022-11-02 20:51:51,122 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7672413793103449 [2022-11-02 20:51:51,123 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2403 transitions. [2022-11-02 20:51:51,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2403 transitions. [2022-11-02 20:51:51,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:51,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2403 transitions. [2022-11-02 20:51:51,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 133.5) internal successors, (2403), 18 states have internal predecessors, (2403), 0 states have call successors, (0), 0 states 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 20:51:51,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states 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 20:51:51,134 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states 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 20:51:51,134 INFO L175 Difference]: Start difference. First operand has 426 places, 351 transitions, 3392 flow. Second operand 18 states and 2403 transitions. [2022-11-02 20:51:51,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 425 transitions, 5292 flow [2022-11-02 20:51:51,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 425 transitions, 5040 flow, removed 124 selfloop flow, removed 20 redundant places. [2022-11-02 20:51:51,522 INFO L231 Difference]: Finished difference. Result has 408 places, 355 transitions, 3477 flow [2022-11-02 20:51:51,523 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3296, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3477, PETRI_PLACES=408, PETRI_TRANSITIONS=355} [2022-11-02 20:51:51,523 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 251 predicate places. [2022-11-02 20:51:51,523 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 355 transitions, 3477 flow [2022-11-02 20:51:51,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:51:51,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:51,525 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:51,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-02 20:51:51,525 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 20:51:51,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:51,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1749506310, now seen corresponding path program 9 times [2022-11-02 20:51:51,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:51,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11656315] [2022-11-02 20:51:51,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:51,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:51,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:51,767 INFO 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 20:51:51,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:51,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11656315] [2022-11-02 20:51:51,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11656315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:51,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:51,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:51:51,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041561366] [2022-11-02 20:51:51,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:51,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:51:51,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:51,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:51:51,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:51:51,771 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:51:51,772 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 355 transitions, 3477 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:51:51,772 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:51,772 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:51:51,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:52,979 INFO L130 PetriNetUnfolder]: 540/2504 cut-off events. [2022-11-02 20:51:52,979 INFO L131 PetriNetUnfolder]: For 43540/43629 co-relation queries the response was YES. [2022-11-02 20:51:53,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13534 conditions, 2504 events. 540/2504 cut-off events. For 43540/43629 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 20771 event pairs, 299 based on Foata normal form. 10/2426 useless extension candidates. Maximal degree in co-relation 13261. Up to 1115 conditions per place. [2022-11-02 20:51:53,023 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 192 selfloop transitions, 41 changer transitions 40/432 dead transitions. [2022-11-02 20:51:53,023 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 432 transitions, 5328 flow [2022-11-02 20:51:53,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:51:53,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-02 20:51:53,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2925 transitions. [2022-11-02 20:51:53,027 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7641065830721003 [2022-11-02 20:51:53,028 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2925 transitions. [2022-11-02 20:51:53,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2925 transitions. [2022-11-02 20:51:53,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:53,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2925 transitions. [2022-11-02 20:51:53,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.95454545454547) internal successors, (2925), 22 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states 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 20:51:53,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states 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 20:51:53,040 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states 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 20:51:53,040 INFO L175 Difference]: Start difference. First operand has 408 places, 355 transitions, 3477 flow. Second operand 22 states and 2925 transitions. [2022-11-02 20:51:53,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 432 transitions, 5328 flow [2022-11-02 20:51:53,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 432 transitions, 5073 flow, removed 74 selfloop flow, removed 14 redundant places. [2022-11-02 20:51:53,371 INFO L231 Difference]: Finished difference. Result has 422 places, 363 transitions, 3618 flow [2022-11-02 20:51:53,372 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3325, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3618, PETRI_PLACES=422, PETRI_TRANSITIONS=363} [2022-11-02 20:51:53,372 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 265 predicate places. [2022-11-02 20:51:53,372 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 363 transitions, 3618 flow [2022-11-02 20:51:53,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:51:53,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:53,373 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:53,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-02 20:51:53,373 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 20:51:53,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:53,374 INFO L85 PathProgramCache]: Analyzing trace with hash 509709592, now seen corresponding path program 10 times [2022-11-02 20:51:53,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:53,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590359092] [2022-11-02 20:51:53,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:53,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:53,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:53,607 INFO 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 20:51:53,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:53,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590359092] [2022-11-02 20:51:53,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590359092] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:53,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:53,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:51:53,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828450503] [2022-11-02 20:51:53,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:53,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:51:53,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:53,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:51:53,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:51:53,611 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:51:53,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 363 transitions, 3618 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:51:53,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:53,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:51:53,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:54,800 INFO L130 PetriNetUnfolder]: 525/2403 cut-off events. [2022-11-02 20:51:54,800 INFO L131 PetriNetUnfolder]: For 37538/37620 co-relation queries the response was YES. [2022-11-02 20:51:54,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12851 conditions, 2403 events. 525/2403 cut-off events. For 37538/37620 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 19719 event pairs, 285 based on Foata normal form. 9/2326 useless extension candidates. Maximal degree in co-relation 12689. Up to 1107 conditions per place. [2022-11-02 20:51:54,847 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 196 selfloop transitions, 29 changer transitions 41/425 dead transitions. [2022-11-02 20:51:54,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 425 transitions, 5175 flow [2022-11-02 20:51:54,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:51:54,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-02 20:51:54,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2915 transitions. [2022-11-02 20:51:54,850 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7614942528735632 [2022-11-02 20:51:54,851 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2915 transitions. [2022-11-02 20:51:54,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2915 transitions. [2022-11-02 20:51:54,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:54,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2915 transitions. [2022-11-02 20:51:54,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.5) internal successors, (2915), 22 states have internal predecessors, (2915), 0 states have call successors, (0), 0 states 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 20:51:54,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states 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 20:51:54,863 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states 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 20:51:54,863 INFO L175 Difference]: Start difference. First operand has 422 places, 363 transitions, 3618 flow. Second operand 22 states and 2915 transitions. [2022-11-02 20:51:54,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 425 transitions, 5175 flow [2022-11-02 20:51:55,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 425 transitions, 4958 flow, removed 83 selfloop flow, removed 12 redundant places. [2022-11-02 20:51:55,181 INFO L231 Difference]: Finished difference. Result has 427 places, 344 transitions, 3256 flow [2022-11-02 20:51:55,181 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3485, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3256, PETRI_PLACES=427, PETRI_TRANSITIONS=344} [2022-11-02 20:51:55,182 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 270 predicate places. [2022-11-02 20:51:55,182 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 344 transitions, 3256 flow [2022-11-02 20:51:55,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:51:55,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:55,183 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:55,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-02 20:51:55,183 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 20:51:55,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:55,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1963490964, now seen corresponding path program 7 times [2022-11-02 20:51:55,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:55,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498892380] [2022-11-02 20:51:55,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:55,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:55,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:55,447 INFO 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 20:51:55,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:55,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498892380] [2022-11-02 20:51:55,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498892380] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:55,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:55,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:51:55,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999925324] [2022-11-02 20:51:55,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:55,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:51:55,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:55,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:51:55,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:51:55,452 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:51:55,453 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 344 transitions, 3256 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:51:55,453 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:55,453 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:51:55,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:56,781 INFO L130 PetriNetUnfolder]: 566/2526 cut-off events. [2022-11-02 20:51:56,781 INFO L131 PetriNetUnfolder]: For 36894/36960 co-relation queries the response was YES. [2022-11-02 20:51:56,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13228 conditions, 2526 events. 566/2526 cut-off events. For 36894/36960 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 20848 event pairs, 301 based on Foata normal form. 15/2448 useless extension candidates. Maximal degree in co-relation 13041. Up to 1124 conditions per place. [2022-11-02 20:51:56,829 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 185 selfloop transitions, 36 changer transitions 41/421 dead transitions. [2022-11-02 20:51:56,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 421 transitions, 4759 flow [2022-11-02 20:51:56,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-02 20:51:56,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-02 20:51:56,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3703 transitions. [2022-11-02 20:51:56,833 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7600574712643678 [2022-11-02 20:51:56,834 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3703 transitions. [2022-11-02 20:51:56,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3703 transitions. [2022-11-02 20:51:56,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:56,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3703 transitions. [2022-11-02 20:51:56,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.25) internal successors, (3703), 28 states have internal predecessors, (3703), 0 states have call successors, (0), 0 states 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 20:51:56,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states 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 20:51:56,846 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states 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 20:51:56,846 INFO L175 Difference]: Start difference. First operand has 427 places, 344 transitions, 3256 flow. Second operand 28 states and 3703 transitions. [2022-11-02 20:51:56,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 421 transitions, 4759 flow [2022-11-02 20:51:57,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 421 transitions, 4636 flow, removed 25 selfloop flow, removed 21 redundant places. [2022-11-02 20:51:57,116 INFO L231 Difference]: Finished difference. Result has 427 places, 346 transitions, 3320 flow [2022-11-02 20:51:57,116 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3141, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=3320, PETRI_PLACES=427, PETRI_TRANSITIONS=346} [2022-11-02 20:51:57,117 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 270 predicate places. [2022-11-02 20:51:57,117 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 346 transitions, 3320 flow [2022-11-02 20:51:57,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:51:57,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:57,117 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:57,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-02 20:51:57,118 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 20:51:57,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:57,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1131111196, now seen corresponding path program 8 times [2022-11-02 20:51:57,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:57,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583273327] [2022-11-02 20:51:57,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:57,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:57,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:57,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:57,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:57,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583273327] [2022-11-02 20:51:57,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583273327] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:57,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:57,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:51:57,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568835709] [2022-11-02 20:51:57,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:57,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:51:57,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:57,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:51:57,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:51:57,368 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:51:57,370 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 346 transitions, 3320 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:51:57,370 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:57,370 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:51:57,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:58,678 INFO L130 PetriNetUnfolder]: 560/2505 cut-off events. [2022-11-02 20:51:58,678 INFO L131 PetriNetUnfolder]: For 37419/37486 co-relation queries the response was YES. [2022-11-02 20:51:58,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13252 conditions, 2505 events. 560/2505 cut-off events. For 37419/37486 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 20737 event pairs, 271 based on Foata normal form. 9/2433 useless extension candidates. Maximal degree in co-relation 13079. Up to 962 conditions per place. [2022-11-02 20:51:58,723 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 258 selfloop transitions, 44 changer transitions 53/514 dead transitions. [2022-11-02 20:51:58,723 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 514 transitions, 6231 flow [2022-11-02 20:51:58,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-02 20:51:58,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-02 20:51:58,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4111 transitions. [2022-11-02 20:51:58,728 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7621431219873934 [2022-11-02 20:51:58,728 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 4111 transitions. [2022-11-02 20:51:58,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 4111 transitions. [2022-11-02 20:51:58,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:58,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 4111 transitions. [2022-11-02 20:51:58,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 132.61290322580646) internal successors, (4111), 31 states have internal predecessors, (4111), 0 states have call successors, (0), 0 states 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 20:51:58,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states 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 20:51:58,743 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states 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 20:51:58,743 INFO L175 Difference]: Start difference. First operand has 427 places, 346 transitions, 3320 flow. Second operand 31 states and 4111 transitions. [2022-11-02 20:51:58,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 514 transitions, 6231 flow [2022-11-02 20:51:59,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 514 transitions, 6055 flow, removed 44 selfloop flow, removed 19 redundant places. [2022-11-02 20:51:59,039 INFO L231 Difference]: Finished difference. Result has 444 places, 351 transitions, 3573 flow [2022-11-02 20:51:59,039 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3240, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=3573, PETRI_PLACES=444, PETRI_TRANSITIONS=351} [2022-11-02 20:51:59,040 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 287 predicate places. [2022-11-02 20:51:59,040 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 351 transitions, 3573 flow [2022-11-02 20:51:59,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:51:59,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:59,040 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:59,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-02 20:51:59,040 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 20:51:59,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:59,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1900103022, now seen corresponding path program 9 times [2022-11-02 20:51:59,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:59,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71979194] [2022-11-02 20:51:59,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:59,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:59,299 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 20:51:59,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:59,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71979194] [2022-11-02 20:51:59,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71979194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:59,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:59,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:51:59,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280220156] [2022-11-02 20:51:59,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:59,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:51:59,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:59,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:51:59,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:51:59,307 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:51:59,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 351 transitions, 3573 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:51:59,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:59,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:51:59,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:00,563 INFO L130 PetriNetUnfolder]: 555/2513 cut-off events. [2022-11-02 20:52:00,563 INFO L131 PetriNetUnfolder]: For 39397/39464 co-relation queries the response was YES. [2022-11-02 20:52:00,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13612 conditions, 2513 events. 555/2513 cut-off events. For 39397/39464 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 20738 event pairs, 297 based on Foata normal form. 15/2438 useless extension candidates. Maximal degree in co-relation 13289. Up to 1130 conditions per place. [2022-11-02 20:52:00,597 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 192 selfloop transitions, 37 changer transitions 35/423 dead transitions. [2022-11-02 20:52:00,597 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 423 transitions, 5258 flow [2022-11-02 20:52:00,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-02 20:52:00,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-02 20:52:00,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3180 transitions. [2022-11-02 20:52:00,601 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7614942528735632 [2022-11-02 20:52:00,601 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3180 transitions. [2022-11-02 20:52:00,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3180 transitions. [2022-11-02 20:52:00,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:00,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3180 transitions. [2022-11-02 20:52:00,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.5) internal successors, (3180), 24 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states 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 20:52:00,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states 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 20:52:00,613 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states 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 20:52:00,613 INFO L175 Difference]: Start difference. First operand has 444 places, 351 transitions, 3573 flow. Second operand 24 states and 3180 transitions. [2022-11-02 20:52:00,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 423 transitions, 5258 flow [2022-11-02 20:52:00,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 423 transitions, 4998 flow, removed 107 selfloop flow, removed 19 redundant places. [2022-11-02 20:52:00,949 INFO L231 Difference]: Finished difference. Result has 440 places, 352 transitions, 3602 flow [2022-11-02 20:52:00,949 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3458, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3602, PETRI_PLACES=440, PETRI_TRANSITIONS=352} [2022-11-02 20:52:00,950 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 283 predicate places. [2022-11-02 20:52:00,950 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 352 transitions, 3602 flow [2022-11-02 20:52:00,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:00,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:00,951 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:00,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-02 20:52:00,951 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 20:52:00,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:00,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1819757638, now seen corresponding path program 11 times [2022-11-02 20:52:00,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:00,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621613751] [2022-11-02 20:52:00,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:00,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:00,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:01,216 INFO 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 20:52:01,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:01,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621613751] [2022-11-02 20:52:01,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621613751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:01,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:01,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:52:01,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495928002] [2022-11-02 20:52:01,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:01,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:52:01,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:01,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:52:01,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:52:01,221 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:52:01,226 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 352 transitions, 3602 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:01,226 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:01,227 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:52:01,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:02,593 INFO L130 PetriNetUnfolder]: 528/2448 cut-off events. [2022-11-02 20:52:02,593 INFO L131 PetriNetUnfolder]: For 33622/33704 co-relation queries the response was YES. [2022-11-02 20:52:02,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12985 conditions, 2448 events. 528/2448 cut-off events. For 33622/33704 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 20216 event pairs, 285 based on Foata normal form. 9/2367 useless extension candidates. Maximal degree in co-relation 12771. Up to 1113 conditions per place. [2022-11-02 20:52:02,639 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 191 selfloop transitions, 37 changer transitions 36/425 dead transitions. [2022-11-02 20:52:02,639 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 425 transitions, 5205 flow [2022-11-02 20:52:02,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:52:02,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-02 20:52:02,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2925 transitions. [2022-11-02 20:52:02,643 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7641065830721003 [2022-11-02 20:52:02,643 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2925 transitions. [2022-11-02 20:52:02,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2925 transitions. [2022-11-02 20:52:02,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:02,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2925 transitions. [2022-11-02 20:52:02,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.95454545454547) internal successors, (2925), 22 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states 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 20:52:02,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states 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 20:52:02,653 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states 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 20:52:02,653 INFO L175 Difference]: Start difference. First operand has 440 places, 352 transitions, 3602 flow. Second operand 22 states and 2925 transitions. [2022-11-02 20:52:02,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 425 transitions, 5205 flow [2022-11-02 20:52:02,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 425 transitions, 5107 flow, removed 26 selfloop flow, removed 20 redundant places. [2022-11-02 20:52:02,906 INFO L231 Difference]: Finished difference. Result has 437 places, 363 transitions, 3806 flow [2022-11-02 20:52:02,907 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3510, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3806, PETRI_PLACES=437, PETRI_TRANSITIONS=363} [2022-11-02 20:52:02,908 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 280 predicate places. [2022-11-02 20:52:02,908 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 363 transitions, 3806 flow [2022-11-02 20:52:02,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:02,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:02,909 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:02,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-02 20:52:02,909 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 20:52:02,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:02,910 INFO L85 PathProgramCache]: Analyzing trace with hash 46997952, now seen corresponding path program 10 times [2022-11-02 20:52:02,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:02,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824057944] [2022-11-02 20:52:02,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:02,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:03,157 INFO 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 20:52:03,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:03,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824057944] [2022-11-02 20:52:03,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824057944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:03,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:03,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:52:03,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413310854] [2022-11-02 20:52:03,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:03,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:52:03,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:03,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:52:03,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:52:03,162 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:52:03,163 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 363 transitions, 3806 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:03,163 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:03,163 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:52:03,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:04,305 INFO L130 PetriNetUnfolder]: 561/2581 cut-off events. [2022-11-02 20:52:04,305 INFO L131 PetriNetUnfolder]: For 33358/33450 co-relation queries the response was YES. [2022-11-02 20:52:04,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13239 conditions, 2581 events. 561/2581 cut-off events. For 33358/33450 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 21549 event pairs, 325 based on Foata normal form. 12/2494 useless extension candidates. Maximal degree in co-relation 13025. Up to 1156 conditions per place. [2022-11-02 20:52:04,354 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 188 selfloop transitions, 41 changer transitions 38/427 dead transitions. [2022-11-02 20:52:04,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 427 transitions, 5359 flow [2022-11-02 20:52:04,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-02 20:52:04,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-02 20:52:04,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3312 transitions. [2022-11-02 20:52:04,358 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7613793103448275 [2022-11-02 20:52:04,358 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3312 transitions. [2022-11-02 20:52:04,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3312 transitions. [2022-11-02 20:52:04,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:04,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3312 transitions. [2022-11-02 20:52:04,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 132.48) internal successors, (3312), 25 states have internal predecessors, (3312), 0 states have call successors, (0), 0 states 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 20:52:04,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states 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 20:52:04,367 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states 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 20:52:04,367 INFO L175 Difference]: Start difference. First operand has 437 places, 363 transitions, 3806 flow. Second operand 25 states and 3312 transitions. [2022-11-02 20:52:04,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 427 transitions, 5359 flow [2022-11-02 20:52:04,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 427 transitions, 5280 flow, removed 25 selfloop flow, removed 9 redundant places. [2022-11-02 20:52:04,645 INFO L231 Difference]: Finished difference. Result has 457 places, 368 transitions, 3969 flow [2022-11-02 20:52:04,646 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3727, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=3969, PETRI_PLACES=457, PETRI_TRANSITIONS=368} [2022-11-02 20:52:04,646 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 300 predicate places. [2022-11-02 20:52:04,646 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 368 transitions, 3969 flow [2022-11-02 20:52:04,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:04,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:04,647 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:04,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-02 20:52:04,647 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 20:52:04,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:04,647 INFO L85 PathProgramCache]: Analyzing trace with hash -2035642944, now seen corresponding path program 12 times [2022-11-02 20:52:04,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:04,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082459193] [2022-11-02 20:52:04,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:04,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:04,948 INFO 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 20:52:04,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:04,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082459193] [2022-11-02 20:52:04,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082459193] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:04,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:04,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:52:04,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347051746] [2022-11-02 20:52:04,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:04,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:52:04,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:04,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:52:04,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:52:04,952 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:52:04,953 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 368 transitions, 3969 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:04,953 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:04,953 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:52:04,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:06,111 INFO L130 PetriNetUnfolder]: 515/2435 cut-off events. [2022-11-02 20:52:06,111 INFO L131 PetriNetUnfolder]: For 33224/33306 co-relation queries the response was YES. [2022-11-02 20:52:06,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12913 conditions, 2435 events. 515/2435 cut-off events. For 33224/33306 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 20221 event pairs, 279 based on Foata normal form. 9/2356 useless extension candidates. Maximal degree in co-relation 12718. Up to 1101 conditions per place. [2022-11-02 20:52:06,158 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 197 selfloop transitions, 38 changer transitions 37/432 dead transitions. [2022-11-02 20:52:06,158 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 432 transitions, 5481 flow [2022-11-02 20:52:06,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:52:06,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-02 20:52:06,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2796 transitions. [2022-11-02 20:52:06,163 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7651888341543513 [2022-11-02 20:52:06,163 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2796 transitions. [2022-11-02 20:52:06,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2796 transitions. [2022-11-02 20:52:06,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:06,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2796 transitions. [2022-11-02 20:52:06,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 133.14285714285714) internal successors, (2796), 21 states have internal predecessors, (2796), 0 states have call successors, (0), 0 states 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 20:52:06,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states 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 20:52:06,168 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states 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 20:52:06,168 INFO L175 Difference]: Start difference. First operand has 457 places, 368 transitions, 3969 flow. Second operand 21 states and 2796 transitions. [2022-11-02 20:52:06,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 432 transitions, 5481 flow [2022-11-02 20:52:06,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 432 transitions, 5357 flow, removed 29 selfloop flow, removed 17 redundant places. [2022-11-02 20:52:06,417 INFO L231 Difference]: Finished difference. Result has 456 places, 370 transitions, 4009 flow [2022-11-02 20:52:06,417 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3851, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=4009, PETRI_PLACES=456, PETRI_TRANSITIONS=370} [2022-11-02 20:52:06,418 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 299 predicate places. [2022-11-02 20:52:06,418 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 370 transitions, 4009 flow [2022-11-02 20:52:06,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:06,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:06,419 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:06,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-02 20:52:06,419 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 20:52:06,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:06,420 INFO L85 PathProgramCache]: Analyzing trace with hash 115996652, now seen corresponding path program 11 times [2022-11-02 20:52:06,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:06,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314274768] [2022-11-02 20:52:06,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:06,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:06,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:06,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:52:06,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:06,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314274768] [2022-11-02 20:52:06,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314274768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:06,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:06,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:52:06,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104873514] [2022-11-02 20:52:06,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:06,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:52:06,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:06,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:52:06,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:52:06,670 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:52:06,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 370 transitions, 4009 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:06,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:06,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:52:06,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:07,813 INFO L130 PetriNetUnfolder]: 538/2531 cut-off events. [2022-11-02 20:52:07,814 INFO L131 PetriNetUnfolder]: For 32936/33038 co-relation queries the response was YES. [2022-11-02 20:52:07,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12866 conditions, 2531 events. 538/2531 cut-off events. For 32936/33038 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 21046 event pairs, 290 based on Foata normal form. 23/2459 useless extension candidates. Maximal degree in co-relation 12697. Up to 1122 conditions per place. [2022-11-02 20:52:07,864 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 197 selfloop transitions, 25 changer transitions 35/416 dead transitions. [2022-11-02 20:52:07,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 416 transitions, 5142 flow [2022-11-02 20:52:07,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:52:07,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-02 20:52:07,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2649 transitions. [2022-11-02 20:52:07,866 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7612068965517241 [2022-11-02 20:52:07,866 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2649 transitions. [2022-11-02 20:52:07,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2649 transitions. [2022-11-02 20:52:07,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:07,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2649 transitions. [2022-11-02 20:52:07,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.45) internal successors, (2649), 20 states have internal predecessors, (2649), 0 states have call successors, (0), 0 states 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 20:52:07,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 20:52:07,872 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 20:52:07,873 INFO L175 Difference]: Start difference. First operand has 456 places, 370 transitions, 4009 flow. Second operand 20 states and 2649 transitions. [2022-11-02 20:52:07,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 416 transitions, 5142 flow [2022-11-02 20:52:08,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 416 transitions, 5018 flow, removed 36 selfloop flow, removed 11 redundant places. [2022-11-02 20:52:08,181 INFO L231 Difference]: Finished difference. Result has 461 places, 349 transitions, 3612 flow [2022-11-02 20:52:08,182 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3889, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3612, PETRI_PLACES=461, PETRI_TRANSITIONS=349} [2022-11-02 20:52:08,182 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 304 predicate places. [2022-11-02 20:52:08,183 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 349 transitions, 3612 flow [2022-11-02 20:52:08,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:08,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:08,184 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:08,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-02 20:52:08,184 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 20:52:08,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:08,185 INFO L85 PathProgramCache]: Analyzing trace with hash 347704562, now seen corresponding path program 13 times [2022-11-02 20:52:08,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:08,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327468308] [2022-11-02 20:52:08,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:08,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:08,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:08,403 INFO 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 20:52:08,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:08,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327468308] [2022-11-02 20:52:08,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327468308] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:08,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:08,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:52:08,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271866761] [2022-11-02 20:52:08,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:08,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:52:08,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:08,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:52:08,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:52:08,411 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:52:08,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 349 transitions, 3612 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:08,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:08,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:52:08,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:09,499 INFO L130 PetriNetUnfolder]: 493/2379 cut-off events. [2022-11-02 20:52:09,499 INFO L131 PetriNetUnfolder]: For 31245/31326 co-relation queries the response was YES. [2022-11-02 20:52:09,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12305 conditions, 2379 events. 493/2379 cut-off events. For 31245/31326 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 19619 event pairs, 276 based on Foata normal form. 9/2302 useless extension candidates. Maximal degree in co-relation 12150. Up to 1063 conditions per place. [2022-11-02 20:52:09,545 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 179 selfloop transitions, 26 changer transitions 36/397 dead transitions. [2022-11-02 20:52:09,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 397 transitions, 4813 flow [2022-11-02 20:52:09,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:52:09,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-02 20:52:09,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2529 transitions. [2022-11-02 20:52:09,548 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.76497277676951 [2022-11-02 20:52:09,548 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2529 transitions. [2022-11-02 20:52:09,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2529 transitions. [2022-11-02 20:52:09,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:09,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2529 transitions. [2022-11-02 20:52:09,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.10526315789474) internal successors, (2529), 19 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states 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 20:52:09,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states 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 20:52:09,553 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states 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 20:52:09,553 INFO L175 Difference]: Start difference. First operand has 461 places, 349 transitions, 3612 flow. Second operand 19 states and 2529 transitions. [2022-11-02 20:52:09,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 397 transitions, 4813 flow [2022-11-02 20:52:09,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 397 transitions, 4667 flow, removed 18 selfloop flow, removed 20 redundant places. [2022-11-02 20:52:09,803 INFO L231 Difference]: Finished difference. Result has 437 places, 338 transitions, 3356 flow [2022-11-02 20:52:09,803 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3472, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3356, PETRI_PLACES=437, PETRI_TRANSITIONS=338} [2022-11-02 20:52:09,803 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 280 predicate places. [2022-11-02 20:52:09,804 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 338 transitions, 3356 flow [2022-11-02 20:52:09,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:09,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:09,805 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:09,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-02 20:52:09,805 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 20:52:09,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:09,806 INFO L85 PathProgramCache]: Analyzing trace with hash 144727342, now seen corresponding path program 14 times [2022-11-02 20:52:09,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:09,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109404885] [2022-11-02 20:52:09,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:09,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:10,054 INFO 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 20:52:10,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:10,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109404885] [2022-11-02 20:52:10,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109404885] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:10,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:10,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:52:10,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008116890] [2022-11-02 20:52:10,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:10,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:52:10,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:10,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:52:10,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:52:10,059 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:52:10,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 338 transitions, 3356 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:10,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:10,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:52:10,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:11,114 INFO L130 PetriNetUnfolder]: 480/2392 cut-off events. [2022-11-02 20:52:11,115 INFO L131 PetriNetUnfolder]: For 29870/29946 co-relation queries the response was YES. [2022-11-02 20:52:11,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11873 conditions, 2392 events. 480/2392 cut-off events. For 29870/29946 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 19860 event pairs, 283 based on Foata normal form. 8/2313 useless extension candidates. Maximal degree in co-relation 11725. Up to 1053 conditions per place. [2022-11-02 20:52:11,156 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 168 selfloop transitions, 14 changer transitions 37/375 dead transitions. [2022-11-02 20:52:11,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 375 transitions, 4323 flow [2022-11-02 20:52:11,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:52:11,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-02 20:52:11,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2649 transitions. [2022-11-02 20:52:11,159 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7612068965517241 [2022-11-02 20:52:11,159 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2649 transitions. [2022-11-02 20:52:11,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2649 transitions. [2022-11-02 20:52:11,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:11,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2649 transitions. [2022-11-02 20:52:11,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.45) internal successors, (2649), 20 states have internal predecessors, (2649), 0 states have call successors, (0), 0 states 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 20:52:11,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 20:52:11,164 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 20:52:11,165 INFO L175 Difference]: Start difference. First operand has 437 places, 338 transitions, 3356 flow. Second operand 20 states and 2649 transitions. [2022-11-02 20:52:11,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 375 transitions, 4323 flow [2022-11-02 20:52:11,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 375 transitions, 4190 flow, removed 19 selfloop flow, removed 21 redundant places. [2022-11-02 20:52:11,379 INFO L231 Difference]: Finished difference. Result has 422 places, 315 transitions, 2910 flow [2022-11-02 20:52:11,379 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3242, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2910, PETRI_PLACES=422, PETRI_TRANSITIONS=315} [2022-11-02 20:52:11,380 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 265 predicate places. [2022-11-02 20:52:11,380 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 315 transitions, 2910 flow [2022-11-02 20:52:11,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:11,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:11,380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:11,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-02 20:52:11,381 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 20:52:11,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:11,381 INFO L85 PathProgramCache]: Analyzing trace with hash -150164290, now seen corresponding path program 15 times [2022-11-02 20:52:11,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:11,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702043654] [2022-11-02 20:52:11,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:11,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:11,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:11,619 INFO 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 20:52:11,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:11,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702043654] [2022-11-02 20:52:11,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702043654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:11,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:11,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:52:11,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204451773] [2022-11-02 20:52:11,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:11,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:52:11,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:11,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:52:11,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:52:11,622 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:52:11,624 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 315 transitions, 2910 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:11,624 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:11,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:52:11,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:12,760 INFO L130 PetriNetUnfolder]: 492/2336 cut-off events. [2022-11-02 20:52:12,761 INFO L131 PetriNetUnfolder]: For 29717/29797 co-relation queries the response was YES. [2022-11-02 20:52:12,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12010 conditions, 2336 events. 492/2336 cut-off events. For 29717/29797 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 19149 event pairs, 281 based on Foata normal form. 9/2256 useless extension candidates. Maximal degree in co-relation 11869. Up to 1055 conditions per place. [2022-11-02 20:52:12,802 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 166 selfloop transitions, 27 changer transitions 36/385 dead transitions. [2022-11-02 20:52:12,802 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 385 transitions, 4456 flow [2022-11-02 20:52:12,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-02 20:52:12,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-02 20:52:12,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3187 transitions. [2022-11-02 20:52:12,806 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7631704980842912 [2022-11-02 20:52:12,806 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3187 transitions. [2022-11-02 20:52:12,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3187 transitions. [2022-11-02 20:52:12,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:12,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3187 transitions. [2022-11-02 20:52:12,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.79166666666666) internal successors, (3187), 24 states have internal predecessors, (3187), 0 states have call successors, (0), 0 states 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 20:52:12,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states 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 20:52:12,813 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states 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 20:52:12,813 INFO L175 Difference]: Start difference. First operand has 422 places, 315 transitions, 2910 flow. Second operand 24 states and 3187 transitions. [2022-11-02 20:52:12,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 385 transitions, 4456 flow [2022-11-02 20:52:13,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 385 transitions, 4213 flow, removed 45 selfloop flow, removed 22 redundant places. [2022-11-02 20:52:13,013 INFO L231 Difference]: Finished difference. Result has 406 places, 327 transitions, 3111 flow [2022-11-02 20:52:13,014 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2796, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3111, PETRI_PLACES=406, PETRI_TRANSITIONS=327} [2022-11-02 20:52:13,014 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 249 predicate places. [2022-11-02 20:52:13,014 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 327 transitions, 3111 flow [2022-11-02 20:52:13,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:13,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:13,015 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:13,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-02 20:52:13,016 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 20:52:13,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:13,016 INFO L85 PathProgramCache]: Analyzing trace with hash 720622452, now seen corresponding path program 12 times [2022-11-02 20:52:13,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:13,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537855956] [2022-11-02 20:52:13,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:13,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:13,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:13,263 INFO 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 20:52:13,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:13,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537855956] [2022-11-02 20:52:13,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537855956] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:13,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:13,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:52:13,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484415451] [2022-11-02 20:52:13,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:13,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:52:13,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:13,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:52:13,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:52:13,267 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:52:13,268 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 327 transitions, 3111 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:13,269 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:13,269 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:52:13,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:14,466 INFO L130 PetriNetUnfolder]: 541/2470 cut-off events. [2022-11-02 20:52:14,466 INFO L131 PetriNetUnfolder]: For 28813/28875 co-relation queries the response was YES. [2022-11-02 20:52:14,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12457 conditions, 2470 events. 541/2470 cut-off events. For 28813/28875 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 20328 event pairs, 311 based on Foata normal form. 11/2390 useless extension candidates. Maximal degree in co-relation 12316. Up to 1106 conditions per place. [2022-11-02 20:52:14,495 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 173 selfloop transitions, 34 changer transitions 35/398 dead transitions. [2022-11-02 20:52:14,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 398 transitions, 4649 flow [2022-11-02 20:52:14,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-02 20:52:14,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-02 20:52:14,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3187 transitions. [2022-11-02 20:52:14,499 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7631704980842912 [2022-11-02 20:52:14,500 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3187 transitions. [2022-11-02 20:52:14,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3187 transitions. [2022-11-02 20:52:14,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:14,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3187 transitions. [2022-11-02 20:52:14,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.79166666666666) internal successors, (3187), 24 states have internal predecessors, (3187), 0 states have call successors, (0), 0 states 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 20:52:14,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states 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 20:52:14,507 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states 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 20:52:14,507 INFO L175 Difference]: Start difference. First operand has 406 places, 327 transitions, 3111 flow. Second operand 24 states and 3187 transitions. [2022-11-02 20:52:14,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 398 transitions, 4649 flow [2022-11-02 20:52:14,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 398 transitions, 4581 flow, removed 30 selfloop flow, removed 11 redundant places. [2022-11-02 20:52:14,673 INFO L231 Difference]: Finished difference. Result has 418 places, 339 transitions, 3378 flow [2022-11-02 20:52:14,673 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3043, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3378, PETRI_PLACES=418, PETRI_TRANSITIONS=339} [2022-11-02 20:52:14,674 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 261 predicate places. [2022-11-02 20:52:14,674 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 339 transitions, 3378 flow [2022-11-02 20:52:14,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:14,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:14,675 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:14,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-02 20:52:14,675 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 20:52:14,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:14,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1140919816, now seen corresponding path program 16 times [2022-11-02 20:52:14,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:14,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555295290] [2022-11-02 20:52:14,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:14,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:14,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:52:14,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:14,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555295290] [2022-11-02 20:52:14,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555295290] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:14,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:14,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:52:14,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007062220] [2022-11-02 20:52:14,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:14,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:52:14,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:14,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:52:14,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:52:14,932 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:52:14,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 339 transitions, 3378 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:14,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:14,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:52:14,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:16,053 INFO L130 PetriNetUnfolder]: 504/2390 cut-off events. [2022-11-02 20:52:16,053 INFO L131 PetriNetUnfolder]: For 29722/29802 co-relation queries the response was YES. [2022-11-02 20:52:16,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12262 conditions, 2390 events. 504/2390 cut-off events. For 29722/29802 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 19760 event pairs, 284 based on Foata normal form. 9/2310 useless extension candidates. Maximal degree in co-relation 12116. Up to 1093 conditions per place. [2022-11-02 20:52:16,096 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 177 selfloop transitions, 29 changer transitions 37/399 dead transitions. [2022-11-02 20:52:16,096 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 399 transitions, 4713 flow [2022-11-02 20:52:16,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:52:16,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-02 20:52:16,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3056 transitions. [2022-11-02 20:52:16,099 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7636181909045477 [2022-11-02 20:52:16,100 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3056 transitions. [2022-11-02 20:52:16,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3056 transitions. [2022-11-02 20:52:16,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:16,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3056 transitions. [2022-11-02 20:52:16,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 132.8695652173913) internal successors, (3056), 23 states have internal predecessors, (3056), 0 states have call successors, (0), 0 states 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 20:52:16,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states 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 20:52:16,110 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states 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 20:52:16,110 INFO L175 Difference]: Start difference. First operand has 418 places, 339 transitions, 3378 flow. Second operand 23 states and 3056 transitions. [2022-11-02 20:52:16,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 399 transitions, 4713 flow [2022-11-02 20:52:16,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 399 transitions, 4626 flow, removed 29 selfloop flow, removed 12 redundant places. [2022-11-02 20:52:16,305 INFO L231 Difference]: Finished difference. Result has 429 places, 343 transitions, 3497 flow [2022-11-02 20:52:16,306 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3297, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=3497, PETRI_PLACES=429, PETRI_TRANSITIONS=343} [2022-11-02 20:52:16,307 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 272 predicate places. [2022-11-02 20:52:16,307 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 343 transitions, 3497 flow [2022-11-02 20:52:16,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:16,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:16,308 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:16,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-02 20:52:16,308 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 20:52:16,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:16,309 INFO L85 PathProgramCache]: Analyzing trace with hash 2043663764, now seen corresponding path program 13 times [2022-11-02 20:52:16,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:16,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009071983] [2022-11-02 20:52:16,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:16,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:16,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:16,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:52:16,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:16,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009071983] [2022-11-02 20:52:16,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009071983] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:16,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:16,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:52:16,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071649199] [2022-11-02 20:52:16,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:16,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:52:16,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:16,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:52:16,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:52:16,524 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:52:16,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 343 transitions, 3497 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:16,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:16,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:52:16,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:17,543 INFO L130 PetriNetUnfolder]: 543/2515 cut-off events. [2022-11-02 20:52:17,543 INFO L131 PetriNetUnfolder]: For 29647/29722 co-relation queries the response was YES. [2022-11-02 20:52:17,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12571 conditions, 2515 events. 543/2515 cut-off events. For 29647/29722 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 20835 event pairs, 321 based on Foata normal form. 11/2427 useless extension candidates. Maximal degree in co-relation 12419. Up to 1114 conditions per place. [2022-11-02 20:52:17,587 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 172 selfloop transitions, 42 changer transitions 29/399 dead transitions. [2022-11-02 20:52:17,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 399 transitions, 4855 flow [2022-11-02 20:52:17,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:52:17,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-02 20:52:17,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2664 transitions. [2022-11-02 20:52:17,590 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7655172413793103 [2022-11-02 20:52:17,590 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2664 transitions. [2022-11-02 20:52:17,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2664 transitions. [2022-11-02 20:52:17,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:17,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2664 transitions. [2022-11-02 20:52:17,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.2) internal successors, (2664), 20 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states 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 20:52:17,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 20:52:17,595 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 20:52:17,595 INFO L175 Difference]: Start difference. First operand has 429 places, 343 transitions, 3497 flow. Second operand 20 states and 2664 transitions. [2022-11-02 20:52:17,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 399 transitions, 4855 flow [2022-11-02 20:52:17,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 399 transitions, 4741 flow, removed 36 selfloop flow, removed 14 redundant places. [2022-11-02 20:52:17,804 INFO L231 Difference]: Finished difference. Result has 430 places, 354 transitions, 3750 flow [2022-11-02 20:52:17,804 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3385, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3750, PETRI_PLACES=430, PETRI_TRANSITIONS=354} [2022-11-02 20:52:17,805 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 273 predicate places. [2022-11-02 20:52:17,805 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 354 transitions, 3750 flow [2022-11-02 20:52:17,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:17,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:17,806 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:17,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-02 20:52:17,806 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 20:52:17,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:17,807 INFO L85 PathProgramCache]: Analyzing trace with hash -431462114, now seen corresponding path program 17 times [2022-11-02 20:52:17,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:17,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8640168] [2022-11-02 20:52:17,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:17,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:18,041 INFO 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 20:52:18,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:18,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8640168] [2022-11-02 20:52:18,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8640168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:18,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:18,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:52:18,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793937591] [2022-11-02 20:52:18,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:18,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:52:18,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:18,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:52:18,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:52:18,044 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:52:18,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 354 transitions, 3750 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:18,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:18,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:52:18,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:19,246 INFO L130 PetriNetUnfolder]: 502/2381 cut-off events. [2022-11-02 20:52:19,246 INFO L131 PetriNetUnfolder]: For 28676/28756 co-relation queries the response was YES. [2022-11-02 20:52:19,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12208 conditions, 2381 events. 502/2381 cut-off events. For 28676/28756 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 19617 event pairs, 278 based on Foata normal form. 9/2300 useless extension candidates. Maximal degree in co-relation 12058. Up to 1101 conditions per place. [2022-11-02 20:52:19,291 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 187 selfloop transitions, 30 changer transitions 33/406 dead transitions. [2022-11-02 20:52:19,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 406 transitions, 4973 flow [2022-11-02 20:52:19,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:52:19,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-02 20:52:19,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2665 transitions. [2022-11-02 20:52:19,295 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7658045977011494 [2022-11-02 20:52:19,295 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2665 transitions. [2022-11-02 20:52:19,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2665 transitions. [2022-11-02 20:52:19,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:19,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2665 transitions. [2022-11-02 20:52:19,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.25) internal successors, (2665), 20 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states 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 20:52:19,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 20:52:19,302 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 20:52:19,302 INFO L175 Difference]: Start difference. First operand has 430 places, 354 transitions, 3750 flow. Second operand 20 states and 2665 transitions. [2022-11-02 20:52:19,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 406 transitions, 4973 flow [2022-11-02 20:52:19,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 406 transitions, 4833 flow, removed 51 selfloop flow, removed 9 redundant places. [2022-11-02 20:52:19,525 INFO L231 Difference]: Finished difference. Result has 439 places, 360 transitions, 3822 flow [2022-11-02 20:52:19,526 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3620, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3822, PETRI_PLACES=439, PETRI_TRANSITIONS=360} [2022-11-02 20:52:19,527 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 282 predicate places. [2022-11-02 20:52:19,527 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 360 transitions, 3822 flow [2022-11-02 20:52:19,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:19,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:19,528 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:19,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-02 20:52:19,529 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 20:52:19,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:19,529 INFO L85 PathProgramCache]: Analyzing trace with hash -691614202, now seen corresponding path program 18 times [2022-11-02 20:52:19,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:19,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670035259] [2022-11-02 20:52:19,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:19,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:19,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:19,803 INFO 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 20:52:19,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:19,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670035259] [2022-11-02 20:52:19,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670035259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:19,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:19,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:52:19,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053215876] [2022-11-02 20:52:19,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:19,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:52:19,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:19,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:52:19,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:52:19,808 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:52:19,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 360 transitions, 3822 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:19,810 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:19,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:52:19,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:21,248 INFO L130 PetriNetUnfolder]: 506/2390 cut-off events. [2022-11-02 20:52:21,248 INFO L131 PetriNetUnfolder]: For 28301/28381 co-relation queries the response was YES. [2022-11-02 20:52:21,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12216 conditions, 2390 events. 506/2390 cut-off events. For 28301/28381 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 19670 event pairs, 279 based on Foata normal form. 9/2310 useless extension candidates. Maximal degree in co-relation 12064. Up to 1101 conditions per place. [2022-11-02 20:52:21,306 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 187 selfloop transitions, 38 changer transitions 32/413 dead transitions. [2022-11-02 20:52:21,306 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 413 transitions, 5144 flow [2022-11-02 20:52:21,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:52:21,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-02 20:52:21,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2534 transitions. [2022-11-02 20:52:21,310 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7664851784633999 [2022-11-02 20:52:21,311 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2534 transitions. [2022-11-02 20:52:21,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2534 transitions. [2022-11-02 20:52:21,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:21,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2534 transitions. [2022-11-02 20:52:21,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.3684210526316) internal successors, (2534), 19 states have internal predecessors, (2534), 0 states have call successors, (0), 0 states 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 20:52:21,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states 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 20:52:21,323 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states 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 20:52:21,323 INFO L175 Difference]: Start difference. First operand has 439 places, 360 transitions, 3822 flow. Second operand 19 states and 2534 transitions. [2022-11-02 20:52:21,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 413 transitions, 5144 flow [2022-11-02 20:52:21,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 413 transitions, 4976 flow, removed 56 selfloop flow, removed 10 redundant places. [2022-11-02 20:52:21,587 INFO L231 Difference]: Finished difference. Result has 447 places, 368 transitions, 3985 flow [2022-11-02 20:52:21,587 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3712, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3985, PETRI_PLACES=447, PETRI_TRANSITIONS=368} [2022-11-02 20:52:21,588 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 290 predicate places. [2022-11-02 20:52:21,588 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 368 transitions, 3985 flow [2022-11-02 20:52:21,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:21,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:21,589 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:21,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-02 20:52:21,589 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 20:52:21,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:21,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1948290876, now seen corresponding path program 14 times [2022-11-02 20:52:21,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:21,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4902215] [2022-11-02 20:52:21,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:21,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:21,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:21,855 INFO 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 20:52:21,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:21,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4902215] [2022-11-02 20:52:21,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4902215] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:21,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:21,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:52:21,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120928388] [2022-11-02 20:52:21,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:21,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:52:21,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:21,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:52:21,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:52:21,858 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:52:21,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 368 transitions, 3985 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:21,860 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:21,860 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:52:21,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:23,046 INFO L130 PetriNetUnfolder]: 531/2461 cut-off events. [2022-11-02 20:52:23,047 INFO L131 PetriNetUnfolder]: For 28078/28140 co-relation queries the response was YES. [2022-11-02 20:52:23,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12348 conditions, 2461 events. 531/2461 cut-off events. For 28078/28140 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 20297 event pairs, 298 based on Foata normal form. 11/2380 useless extension candidates. Maximal degree in co-relation 12193. Up to 1107 conditions per place. [2022-11-02 20:52:23,106 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 190 selfloop transitions, 41 changer transitions 30/417 dead transitions. [2022-11-02 20:52:23,107 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 417 transitions, 5243 flow [2022-11-02 20:52:23,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:52:23,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-02 20:52:23,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2663 transitions. [2022-11-02 20:52:23,109 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7652298850574712 [2022-11-02 20:52:23,109 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2663 transitions. [2022-11-02 20:52:23,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2663 transitions. [2022-11-02 20:52:23,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:23,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2663 transitions. [2022-11-02 20:52:23,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.15) internal successors, (2663), 20 states have internal predecessors, (2663), 0 states have call successors, (0), 0 states 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 20:52:23,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 20:52:23,115 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 20:52:23,115 INFO L175 Difference]: Start difference. First operand has 447 places, 368 transitions, 3985 flow. Second operand 20 states and 2663 transitions. [2022-11-02 20:52:23,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 417 transitions, 5243 flow [2022-11-02 20:52:23,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 417 transitions, 5137 flow, removed 22 selfloop flow, removed 11 redundant places. [2022-11-02 20:52:23,351 INFO L231 Difference]: Finished difference. Result has 455 places, 373 transitions, 4093 flow [2022-11-02 20:52:23,352 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3879, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=4093, PETRI_PLACES=455, PETRI_TRANSITIONS=373} [2022-11-02 20:52:23,352 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 298 predicate places. [2022-11-02 20:52:23,352 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 373 transitions, 4093 flow [2022-11-02 20:52:23,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:23,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:23,353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:23,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-02 20:52:23,353 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 20:52:23,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:23,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1810728888, now seen corresponding path program 19 times [2022-11-02 20:52:23,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:23,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714473297] [2022-11-02 20:52:23,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:23,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:23,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:23,590 INFO 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 20:52:23,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:23,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714473297] [2022-11-02 20:52:23,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714473297] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:23,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:23,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:52:23,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675787878] [2022-11-02 20:52:23,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:23,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:52:23,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:23,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:52:23,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:52:23,594 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:52:23,594 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 373 transitions, 4093 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:23,594 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:23,594 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:52:23,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:24,781 INFO L130 PetriNetUnfolder]: 499/2387 cut-off events. [2022-11-02 20:52:24,781 INFO L131 PetriNetUnfolder]: For 28399/28476 co-relation queries the response was YES. [2022-11-02 20:52:24,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12062 conditions, 2387 events. 499/2387 cut-off events. For 28399/28476 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 19599 event pairs, 288 based on Foata normal form. 7/2307 useless extension candidates. Maximal degree in co-relation 11905. Up to 1085 conditions per place. [2022-11-02 20:52:24,830 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 197 selfloop transitions, 34 changer transitions 33/420 dead transitions. [2022-11-02 20:52:24,830 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 420 transitions, 5290 flow [2022-11-02 20:52:24,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:52:24,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-02 20:52:24,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2665 transitions. [2022-11-02 20:52:24,833 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7658045977011494 [2022-11-02 20:52:24,833 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2665 transitions. [2022-11-02 20:52:24,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2665 transitions. [2022-11-02 20:52:24,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:24,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2665 transitions. [2022-11-02 20:52:24,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.25) internal successors, (2665), 20 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states 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 20:52:24,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 20:52:24,838 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 20:52:24,839 INFO L175 Difference]: Start difference. First operand has 455 places, 373 transitions, 4093 flow. Second operand 20 states and 2665 transitions. [2022-11-02 20:52:24,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 420 transitions, 5290 flow [2022-11-02 20:52:25,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 420 transitions, 5156 flow, removed 37 selfloop flow, removed 11 redundant places. [2022-11-02 20:52:25,088 INFO L231 Difference]: Finished difference. Result has 460 places, 375 transitions, 4109 flow [2022-11-02 20:52:25,088 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3965, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=4109, PETRI_PLACES=460, PETRI_TRANSITIONS=375} [2022-11-02 20:52:25,089 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 303 predicate places. [2022-11-02 20:52:25,089 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 375 transitions, 4109 flow [2022-11-02 20:52:25,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:25,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:25,090 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:25,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-02 20:52:25,090 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 20:52:25,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:25,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1013284284, now seen corresponding path program 20 times [2022-11-02 20:52:25,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:25,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364514253] [2022-11-02 20:52:25,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:25,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:25,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:25,335 INFO 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 20:52:25,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:25,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364514253] [2022-11-02 20:52:25,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364514253] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:25,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:25,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:52:25,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383116534] [2022-11-02 20:52:25,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:25,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:52:25,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:25,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:52:25,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:52:25,339 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:52:25,341 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 375 transitions, 4109 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:25,341 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:25,341 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:52:25,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:26,441 INFO L130 PetriNetUnfolder]: 493/2364 cut-off events. [2022-11-02 20:52:26,441 INFO L131 PetriNetUnfolder]: For 27704/27781 co-relation queries the response was YES. [2022-11-02 20:52:26,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11805 conditions, 2364 events. 493/2364 cut-off events. For 27704/27781 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 19339 event pairs, 289 based on Foata normal form. 7/2284 useless extension candidates. Maximal degree in co-relation 11649. Up to 1086 conditions per place. [2022-11-02 20:52:26,483 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 193 selfloop transitions, 19 changer transitions 40/408 dead transitions. [2022-11-02 20:52:26,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 408 transitions, 4995 flow [2022-11-02 20:52:26,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:52:26,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-02 20:52:26,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2660 transitions. [2022-11-02 20:52:26,486 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.764367816091954 [2022-11-02 20:52:26,487 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2660 transitions. [2022-11-02 20:52:26,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2660 transitions. [2022-11-02 20:52:26,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:26,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2660 transitions. [2022-11-02 20:52:26,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.0) internal successors, (2660), 20 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states 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 20:52:26,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 20:52:26,495 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 20:52:26,495 INFO L175 Difference]: Start difference. First operand has 460 places, 375 transitions, 4109 flow. Second operand 20 states and 2660 transitions. [2022-11-02 20:52:26,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 408 transitions, 4995 flow [2022-11-02 20:52:26,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 408 transitions, 4875 flow, removed 35 selfloop flow, removed 8 redundant places. [2022-11-02 20:52:26,772 INFO L231 Difference]: Finished difference. Result has 468 places, 358 transitions, 3752 flow [2022-11-02 20:52:26,772 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=4005, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3752, PETRI_PLACES=468, PETRI_TRANSITIONS=358} [2022-11-02 20:52:26,773 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 311 predicate places. [2022-11-02 20:52:26,773 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 358 transitions, 3752 flow [2022-11-02 20:52:26,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:26,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:26,774 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:26,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-02 20:52:26,774 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 20:52:26,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:26,775 INFO L85 PathProgramCache]: Analyzing trace with hash -506097814, now seen corresponding path program 21 times [2022-11-02 20:52:26,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:26,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616845286] [2022-11-02 20:52:26,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:26,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:26,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:27,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:52:27,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:27,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616845286] [2022-11-02 20:52:27,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616845286] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:27,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:27,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:52:27,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933308573] [2022-11-02 20:52:27,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:27,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:52:27,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:27,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:52:27,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:52:27,022 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:52:27,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 358 transitions, 3752 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:27,023 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:27,023 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:52:27,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:28,200 INFO L130 PetriNetUnfolder]: 487/2354 cut-off events. [2022-11-02 20:52:28,201 INFO L131 PetriNetUnfolder]: For 27270/27347 co-relation queries the response was YES. [2022-11-02 20:52:28,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11666 conditions, 2354 events. 487/2354 cut-off events. For 27270/27347 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 19280 event pairs, 289 based on Foata normal form. 7/2274 useless extension candidates. Maximal degree in co-relation 11508. Up to 1085 conditions per place. [2022-11-02 20:52:28,248 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 183 selfloop transitions, 20 changer transitions 38/397 dead transitions. [2022-11-02 20:52:28,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 397 transitions, 4744 flow [2022-11-02 20:52:28,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:52:28,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-02 20:52:28,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2918 transitions. [2022-11-02 20:52:28,251 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7622779519331243 [2022-11-02 20:52:28,251 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2918 transitions. [2022-11-02 20:52:28,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2918 transitions. [2022-11-02 20:52:28,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:28,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2918 transitions. [2022-11-02 20:52:28,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.63636363636363) internal successors, (2918), 22 states have internal predecessors, (2918), 0 states have call successors, (0), 0 states 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 20:52:28,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states 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 20:52:28,257 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states 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 20:52:28,257 INFO L175 Difference]: Start difference. First operand has 468 places, 358 transitions, 3752 flow. Second operand 22 states and 2918 transitions. [2022-11-02 20:52:28,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 397 transitions, 4744 flow [2022-11-02 20:52:28,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 397 transitions, 4563 flow, removed 25 selfloop flow, removed 22 redundant places. [2022-11-02 20:52:28,472 INFO L231 Difference]: Finished difference. Result has 453 places, 349 transitions, 3540 flow [2022-11-02 20:52:28,472 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3630, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3540, PETRI_PLACES=453, PETRI_TRANSITIONS=349} [2022-11-02 20:52:28,473 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 296 predicate places. [2022-11-02 20:52:28,473 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 349 transitions, 3540 flow [2022-11-02 20:52:28,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:28,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:28,474 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:28,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-02 20:52:28,474 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 20:52:28,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:28,475 INFO L85 PathProgramCache]: Analyzing trace with hash -515376076, now seen corresponding path program 15 times [2022-11-02 20:52:28,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:28,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796776578] [2022-11-02 20:52:28,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:28,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:28,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:28,716 INFO 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 20:52:28,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:28,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796776578] [2022-11-02 20:52:28,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796776578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:28,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:28,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:52:28,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340655125] [2022-11-02 20:52:28,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:28,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:52:28,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:28,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:52:28,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:52:28,720 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:52:28,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 349 transitions, 3540 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:28,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:28,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:52:28,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:29,902 INFO L130 PetriNetUnfolder]: 503/2378 cut-off events. [2022-11-02 20:52:29,902 INFO L131 PetriNetUnfolder]: For 26444/26506 co-relation queries the response was YES. [2022-11-02 20:52:29,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11622 conditions, 2378 events. 503/2378 cut-off events. For 26444/26506 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 19455 event pairs, 291 based on Foata normal form. 11/2299 useless extension candidates. Maximal degree in co-relation 11467. Up to 1036 conditions per place. [2022-11-02 20:52:29,969 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 166 selfloop transitions, 36 changer transitions 38/396 dead transitions. [2022-11-02 20:52:29,969 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 396 transitions, 4717 flow [2022-11-02 20:52:29,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:52:29,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-02 20:52:29,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3053 transitions. [2022-11-02 20:52:29,972 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7628685657171415 [2022-11-02 20:52:29,972 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3053 transitions. [2022-11-02 20:52:29,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3053 transitions. [2022-11-02 20:52:29,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:29,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3053 transitions. [2022-11-02 20:52:29,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 132.7391304347826) internal successors, (3053), 23 states have internal predecessors, (3053), 0 states have call successors, (0), 0 states 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 20:52:29,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states 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 20:52:29,978 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states 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 20:52:29,979 INFO L175 Difference]: Start difference. First operand has 453 places, 349 transitions, 3540 flow. Second operand 23 states and 3053 transitions. [2022-11-02 20:52:29,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 396 transitions, 4717 flow [2022-11-02 20:52:30,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 396 transitions, 4628 flow, removed 16 selfloop flow, removed 21 redundant places. [2022-11-02 20:52:30,194 INFO L231 Difference]: Finished difference. Result has 445 places, 345 transitions, 3504 flow [2022-11-02 20:52:30,195 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3451, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=3504, PETRI_PLACES=445, PETRI_TRANSITIONS=345} [2022-11-02 20:52:30,196 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 288 predicate places. [2022-11-02 20:52:30,196 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 345 transitions, 3504 flow [2022-11-02 20:52:30,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:30,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:30,197 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:30,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-02 20:52:30,197 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 20:52:30,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:30,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1406058206, now seen corresponding path program 22 times [2022-11-02 20:52:30,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:30,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034553344] [2022-11-02 20:52:30,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:30,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:30,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:30,439 INFO 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 20:52:30,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:30,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034553344] [2022-11-02 20:52:30,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034553344] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:30,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:30,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:52:30,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090562102] [2022-11-02 20:52:30,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:30,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:52:30,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:30,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:52:30,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:52:30,443 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:52:30,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 345 transitions, 3504 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:30,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:30,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:52:30,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:31,545 INFO L130 PetriNetUnfolder]: 457/2261 cut-off events. [2022-11-02 20:52:31,545 INFO L131 PetriNetUnfolder]: For 26178/26255 co-relation queries the response was YES. [2022-11-02 20:52:31,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10977 conditions, 2261 events. 457/2261 cut-off events. For 26178/26255 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 18377 event pairs, 277 based on Foata normal form. 7/2184 useless extension candidates. Maximal degree in co-relation 10826. Up to 1040 conditions per place. [2022-11-02 20:52:31,590 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 168 selfloop transitions, 4 changer transitions 40/368 dead transitions. [2022-11-02 20:52:31,591 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 368 transitions, 4153 flow [2022-11-02 20:52:31,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:52:31,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-02 20:52:31,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2775 transitions. [2022-11-02 20:52:31,594 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7594417077175698 [2022-11-02 20:52:31,594 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2775 transitions. [2022-11-02 20:52:31,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2775 transitions. [2022-11-02 20:52:31,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:31,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2775 transitions. [2022-11-02 20:52:31,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.14285714285714) internal successors, (2775), 21 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states 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 20:52:31,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states 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 20:52:31,697 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states 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 20:52:31,698 INFO L175 Difference]: Start difference. First operand has 445 places, 345 transitions, 3504 flow. Second operand 21 states and 2775 transitions. [2022-11-02 20:52:31,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 368 transitions, 4153 flow [2022-11-02 20:52:31,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 368 transitions, 3994 flow, removed 33 selfloop flow, removed 15 redundant places. [2022-11-02 20:52:31,919 INFO L231 Difference]: Finished difference. Result has 441 places, 318 transitions, 2971 flow [2022-11-02 20:52:31,920 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3351, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2971, PETRI_PLACES=441, PETRI_TRANSITIONS=318} [2022-11-02 20:52:31,920 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 284 predicate places. [2022-11-02 20:52:31,921 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 318 transitions, 2971 flow [2022-11-02 20:52:31,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:31,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:31,922 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:31,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-02 20:52:31,922 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 20:52:31,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:31,923 INFO L85 PathProgramCache]: Analyzing trace with hash -513134840, now seen corresponding path program 16 times [2022-11-02 20:52:31,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:31,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706606429] [2022-11-02 20:52:31,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:31,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:31,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:32,151 INFO 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 20:52:32,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:32,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706606429] [2022-11-02 20:52:32,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706606429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:32,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:32,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:52:32,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837092207] [2022-11-02 20:52:32,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:32,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:52:32,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:32,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:52:32,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:52:32,156 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:52:32,157 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 318 transitions, 2971 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:32,157 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:32,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:52:32,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:33,166 INFO L130 PetriNetUnfolder]: 484/2325 cut-off events. [2022-11-02 20:52:33,167 INFO L131 PetriNetUnfolder]: For 24712/24786 co-relation queries the response was YES. [2022-11-02 20:52:33,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10973 conditions, 2325 events. 484/2325 cut-off events. For 24712/24786 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 18892 event pairs, 306 based on Foata normal form. 11/2239 useless extension candidates. Maximal degree in co-relation 10829. Up to 1009 conditions per place. [2022-11-02 20:52:33,209 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 134 selfloop transitions, 34 changer transitions 32/352 dead transitions. [2022-11-02 20:52:33,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 352 transitions, 3855 flow [2022-11-02 20:52:33,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:52:33,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-02 20:52:33,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2913 transitions. [2022-11-02 20:52:33,212 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7609717868338558 [2022-11-02 20:52:33,212 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2913 transitions. [2022-11-02 20:52:33,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2913 transitions. [2022-11-02 20:52:33,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:33,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2913 transitions. [2022-11-02 20:52:33,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.4090909090909) internal successors, (2913), 22 states have internal predecessors, (2913), 0 states have call successors, (0), 0 states 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 20:52:33,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states 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 20:52:33,218 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states 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 20:52:33,218 INFO L175 Difference]: Start difference. First operand has 441 places, 318 transitions, 2971 flow. Second operand 22 states and 2913 transitions. [2022-11-02 20:52:33,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 352 transitions, 3855 flow [2022-11-02 20:52:33,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 352 transitions, 3771 flow, removed 30 selfloop flow, removed 22 redundant places. [2022-11-02 20:52:33,428 INFO L231 Difference]: Finished difference. Result has 410 places, 309 transitions, 2832 flow [2022-11-02 20:52:33,429 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2895, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2832, PETRI_PLACES=410, PETRI_TRANSITIONS=309} [2022-11-02 20:52:33,429 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 253 predicate places. [2022-11-02 20:52:33,429 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 309 transitions, 2832 flow [2022-11-02 20:52:33,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:33,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:33,430 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:33,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-02 20:52:33,431 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 20:52:33,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:33,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1690823666, now seen corresponding path program 17 times [2022-11-02 20:52:33,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:33,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017512790] [2022-11-02 20:52:33,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:33,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:33,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:33,681 INFO 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 20:52:33,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:33,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017512790] [2022-11-02 20:52:33,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017512790] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:33,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:33,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:52:33,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453196299] [2022-11-02 20:52:33,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:33,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:52:33,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:33,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:52:33,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:52:33,686 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:52:33,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 309 transitions, 2832 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:33,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:33,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:52:33,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:34,776 INFO L130 PetriNetUnfolder]: 472/2298 cut-off events. [2022-11-02 20:52:34,776 INFO L131 PetriNetUnfolder]: For 22228/22302 co-relation queries the response was YES. [2022-11-02 20:52:34,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10532 conditions, 2298 events. 472/2298 cut-off events. For 22228/22302 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 18697 event pairs, 297 based on Foata normal form. 11/2216 useless extension candidates. Maximal degree in co-relation 10395. Up to 998 conditions per place. [2022-11-02 20:52:34,850 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 131 selfloop transitions, 20 changer transitions 33/336 dead transitions. [2022-11-02 20:52:34,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 336 transitions, 3575 flow [2022-11-02 20:52:34,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:52:34,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-02 20:52:34,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2652 transitions. [2022-11-02 20:52:34,854 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7620689655172413 [2022-11-02 20:52:34,854 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2652 transitions. [2022-11-02 20:52:34,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2652 transitions. [2022-11-02 20:52:34,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:34,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2652 transitions. [2022-11-02 20:52:34,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.6) internal successors, (2652), 20 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states 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 20:52:34,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 20:52:34,863 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 20:52:34,863 INFO L175 Difference]: Start difference. First operand has 410 places, 309 transitions, 2832 flow. Second operand 20 states and 2652 transitions. [2022-11-02 20:52:34,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 336 transitions, 3575 flow [2022-11-02 20:52:35,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 336 transitions, 3407 flow, removed 23 selfloop flow, removed 22 redundant places. [2022-11-02 20:52:35,058 INFO L231 Difference]: Finished difference. Result has 394 places, 292 transitions, 2471 flow [2022-11-02 20:52:35,058 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2689, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2471, PETRI_PLACES=394, PETRI_TRANSITIONS=292} [2022-11-02 20:52:35,061 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 237 predicate places. [2022-11-02 20:52:35,061 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 292 transitions, 2471 flow [2022-11-02 20:52:35,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:35,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:35,062 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:35,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-11-02 20:52:35,062 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 20:52:35,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:35,062 INFO L85 PathProgramCache]: Analyzing trace with hash -773106686, now seen corresponding path program 18 times [2022-11-02 20:52:35,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:35,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592845145] [2022-11-02 20:52:35,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:35,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:35,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:35,303 INFO 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 20:52:35,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:35,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592845145] [2022-11-02 20:52:35,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592845145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:35,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:35,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:52:35,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971669341] [2022-11-02 20:52:35,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:35,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:52:35,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:35,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:52:35,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:52:35,307 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:52:35,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 292 transitions, 2471 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:35,329 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:35,330 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:52:35,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:36,250 INFO L130 PetriNetUnfolder]: 457/2244 cut-off events. [2022-11-02 20:52:36,250 INFO L131 PetriNetUnfolder]: For 21260/21334 co-relation queries the response was YES. [2022-11-02 20:52:36,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10107 conditions, 2244 events. 457/2244 cut-off events. For 21260/21334 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 18130 event pairs, 298 based on Foata normal form. 11/2161 useless extension candidates. Maximal degree in co-relation 9979. Up to 983 conditions per place. [2022-11-02 20:52:36,286 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 116 selfloop transitions, 8 changer transitions 34/310 dead transitions. [2022-11-02 20:52:36,286 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 310 transitions, 3001 flow [2022-11-02 20:52:36,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:52:36,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-02 20:52:36,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2769 transitions. [2022-11-02 20:52:36,289 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7577996715927751 [2022-11-02 20:52:36,289 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2769 transitions. [2022-11-02 20:52:36,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2769 transitions. [2022-11-02 20:52:36,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:36,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2769 transitions. [2022-11-02 20:52:36,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 131.85714285714286) internal successors, (2769), 21 states have internal predecessors, (2769), 0 states have call successors, (0), 0 states 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 20:52:36,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states 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 20:52:36,294 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states 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 20:52:36,294 INFO L175 Difference]: Start difference. First operand has 394 places, 292 transitions, 2471 flow. Second operand 21 states and 2769 transitions. [2022-11-02 20:52:36,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 310 transitions, 3001 flow [2022-11-02 20:52:36,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 310 transitions, 2881 flow, removed 21 selfloop flow, removed 21 redundant places. [2022-11-02 20:52:36,416 INFO L231 Difference]: Finished difference. Result has 374 places, 265 transitions, 1995 flow [2022-11-02 20:52:36,416 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2365, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1995, PETRI_PLACES=374, PETRI_TRANSITIONS=265} [2022-11-02 20:52:36,416 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 217 predicate places. [2022-11-02 20:52:36,416 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 265 transitions, 1995 flow [2022-11-02 20:52:36,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:36,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:36,417 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:36,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-11-02 20:52:36,417 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 20:52:36,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:36,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1208877794, now seen corresponding path program 23 times [2022-11-02 20:52:36,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:36,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574102143] [2022-11-02 20:52:36,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:36,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:36,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:36,648 INFO 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 20:52:36,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:36,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574102143] [2022-11-02 20:52:36,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574102143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:36,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:36,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:52:36,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349843719] [2022-11-02 20:52:36,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:36,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:52:36,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:36,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:52:36,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:52:36,652 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:52:36,654 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 265 transitions, 1995 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:36,654 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:36,654 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:52:36,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:37,767 INFO L130 PetriNetUnfolder]: 444/2175 cut-off events. [2022-11-02 20:52:37,768 INFO L131 PetriNetUnfolder]: For 20453/20529 co-relation queries the response was YES. [2022-11-02 20:52:37,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10023 conditions, 2175 events. 444/2175 cut-off events. For 20453/20529 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 17524 event pairs, 251 based on Foata normal form. 7/2099 useless extension candidates. Maximal degree in co-relation 9903. Up to 977 conditions per place. [2022-11-02 20:52:37,823 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 144 selfloop transitions, 24 changer transitions 43/362 dead transitions. [2022-11-02 20:52:37,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 362 transitions, 3479 flow [2022-11-02 20:52:37,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-02 20:52:37,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-02 20:52:37,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3707 transitions. [2022-11-02 20:52:37,827 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7608784893267652 [2022-11-02 20:52:37,827 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3707 transitions. [2022-11-02 20:52:37,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3707 transitions. [2022-11-02 20:52:37,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:37,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3707 transitions. [2022-11-02 20:52:37,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.39285714285714) internal successors, (3707), 28 states have internal predecessors, (3707), 0 states have call successors, (0), 0 states 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 20:52:37,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states 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 20:52:37,835 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states 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 20:52:37,835 INFO L175 Difference]: Start difference. First operand has 374 places, 265 transitions, 1995 flow. Second operand 28 states and 3707 transitions. [2022-11-02 20:52:37,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 362 transitions, 3479 flow [2022-11-02 20:52:37,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 362 transitions, 3405 flow, removed 22 selfloop flow, removed 18 redundant places. [2022-11-02 20:52:37,962 INFO L231 Difference]: Finished difference. Result has 363 places, 279 transitions, 2213 flow [2022-11-02 20:52:37,963 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1927, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2213, PETRI_PLACES=363, PETRI_TRANSITIONS=279} [2022-11-02 20:52:37,963 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 206 predicate places. [2022-11-02 20:52:37,963 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 279 transitions, 2213 flow [2022-11-02 20:52:37,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:37,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:37,964 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:37,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-11-02 20:52:37,964 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:52:37,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:37,965 INFO L85 PathProgramCache]: Analyzing trace with hash -275583526, now seen corresponding path program 19 times [2022-11-02 20:52:37,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:37,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255895397] [2022-11-02 20:52:37,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:37,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:37,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:38,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:52:38,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:38,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255895397] [2022-11-02 20:52:38,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255895397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:38,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:38,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:52:38,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103230641] [2022-11-02 20:52:38,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:38,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:52:38,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:38,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:52:38,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:52:38,228 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:52:38,229 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 279 transitions, 2213 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:38,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:38,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:52:38,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:39,375 INFO L130 PetriNetUnfolder]: 476/2269 cut-off events. [2022-11-02 20:52:39,375 INFO L131 PetriNetUnfolder]: For 20111/20165 co-relation queries the response was YES. [2022-11-02 20:52:39,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10355 conditions, 2269 events. 476/2269 cut-off events. For 20111/20165 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 18329 event pairs, 256 based on Foata normal form. 9/2192 useless extension candidates. Maximal degree in co-relation 10229. Up to 951 conditions per place. [2022-11-02 20:52:39,413 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 131 selfloop transitions, 25 changer transitions 40/354 dead transitions. [2022-11-02 20:52:39,413 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 354 transitions, 3578 flow [2022-11-02 20:52:39,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-02 20:52:39,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-02 20:52:39,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3449 transitions. [2022-11-02 20:52:39,417 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7623784261715296 [2022-11-02 20:52:39,417 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3449 transitions. [2022-11-02 20:52:39,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3449 transitions. [2022-11-02 20:52:39,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:39,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3449 transitions. [2022-11-02 20:52:39,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.65384615384616) internal successors, (3449), 26 states have internal predecessors, (3449), 0 states have call successors, (0), 0 states 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 20:52:39,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states 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 20:52:39,424 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states 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 20:52:39,424 INFO L175 Difference]: Start difference. First operand has 363 places, 279 transitions, 2213 flow. Second operand 26 states and 3449 transitions. [2022-11-02 20:52:39,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 354 transitions, 3578 flow [2022-11-02 20:52:39,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 354 transitions, 3522 flow, removed 23 selfloop flow, removed 17 redundant places. [2022-11-02 20:52:39,588 INFO L231 Difference]: Finished difference. Result has 372 places, 287 transitions, 2399 flow [2022-11-02 20:52:39,588 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2157, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2399, PETRI_PLACES=372, PETRI_TRANSITIONS=287} [2022-11-02 20:52:39,589 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 215 predicate places. [2022-11-02 20:52:39,589 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 287 transitions, 2399 flow [2022-11-02 20:52:39,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:39,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:39,590 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:39,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-11-02 20:52:39,591 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:52:39,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:39,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1552759850, now seen corresponding path program 24 times [2022-11-02 20:52:39,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:39,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858732508] [2022-11-02 20:52:39,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:39,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:39,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:39,829 INFO 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 20:52:39,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:39,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858732508] [2022-11-02 20:52:39,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858732508] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:39,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:39,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:52:39,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707717952] [2022-11-02 20:52:39,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:39,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:52:39,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:39,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:52:39,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:52:39,832 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:52:39,834 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 287 transitions, 2399 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:39,834 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:39,834 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:52:39,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:41,072 INFO L130 PetriNetUnfolder]: 437/2185 cut-off events. [2022-11-02 20:52:41,072 INFO L131 PetriNetUnfolder]: For 21647/21723 co-relation queries the response was YES. [2022-11-02 20:52:41,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10286 conditions, 2185 events. 437/2185 cut-off events. For 21647/21723 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 17709 event pairs, 249 based on Foata normal form. 7/2107 useless extension candidates. Maximal degree in co-relation 10155. Up to 973 conditions per place. [2022-11-02 20:52:41,109 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 137 selfloop transitions, 26 changer transitions 42/360 dead transitions. [2022-11-02 20:52:41,109 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 360 transitions, 3688 flow [2022-11-02 20:52:41,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-02 20:52:41,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-02 20:52:41,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3579 transitions. [2022-11-02 20:52:41,112 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7618135376756067 [2022-11-02 20:52:41,113 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3579 transitions. [2022-11-02 20:52:41,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3579 transitions. [2022-11-02 20:52:41,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:41,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3579 transitions. [2022-11-02 20:52:41,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.55555555555554) internal successors, (3579), 27 states have internal predecessors, (3579), 0 states have call successors, (0), 0 states 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 20:52:41,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states 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 20:52:41,119 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states 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 20:52:41,120 INFO L175 Difference]: Start difference. First operand has 372 places, 287 transitions, 2399 flow. Second operand 27 states and 3579 transitions. [2022-11-02 20:52:41,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 360 transitions, 3688 flow [2022-11-02 20:52:41,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 360 transitions, 3623 flow, removed 29 selfloop flow, removed 16 redundant places. [2022-11-02 20:52:41,272 INFO L231 Difference]: Finished difference. Result has 386 places, 292 transitions, 2569 flow [2022-11-02 20:52:41,272 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2340, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2569, PETRI_PLACES=386, PETRI_TRANSITIONS=292} [2022-11-02 20:52:41,273 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 229 predicate places. [2022-11-02 20:52:41,273 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 292 transitions, 2569 flow [2022-11-02 20:52:41,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:41,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:41,274 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:41,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-11-02 20:52:41,274 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:52:41,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:41,275 INFO L85 PathProgramCache]: Analyzing trace with hash 615189384, now seen corresponding path program 25 times [2022-11-02 20:52:41,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:41,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565342557] [2022-11-02 20:52:41,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:41,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:41,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:41,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:52:41,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:41,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565342557] [2022-11-02 20:52:41,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565342557] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:41,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:41,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:52:41,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821778523] [2022-11-02 20:52:41,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:41,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:52:41,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:41,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:52:41,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:52:41,523 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:52:41,524 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 292 transitions, 2569 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:41,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:41,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:52:41,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:42,579 INFO L130 PetriNetUnfolder]: 432/2165 cut-off events. [2022-11-02 20:52:42,579 INFO L131 PetriNetUnfolder]: For 21599/21675 co-relation queries the response was YES. [2022-11-02 20:52:42,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10307 conditions, 2165 events. 432/2165 cut-off events. For 21599/21675 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 17488 event pairs, 241 based on Foata normal form. 7/2091 useless extension candidates. Maximal degree in co-relation 10169. Up to 976 conditions per place. [2022-11-02 20:52:42,619 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 147 selfloop transitions, 28 changer transitions 39/369 dead transitions. [2022-11-02 20:52:42,619 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 369 transitions, 4017 flow [2022-11-02 20:52:42,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-02 20:52:42,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-02 20:52:42,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3185 transitions. [2022-11-02 20:52:42,623 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7626915708812261 [2022-11-02 20:52:42,623 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3185 transitions. [2022-11-02 20:52:42,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3185 transitions. [2022-11-02 20:52:42,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:42,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3185 transitions. [2022-11-02 20:52:42,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.70833333333334) internal successors, (3185), 24 states have internal predecessors, (3185), 0 states have call successors, (0), 0 states 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 20:52:42,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states 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 20:52:42,629 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states 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 20:52:42,630 INFO L175 Difference]: Start difference. First operand has 386 places, 292 transitions, 2569 flow. Second operand 24 states and 3185 transitions. [2022-11-02 20:52:42,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 369 transitions, 4017 flow [2022-11-02 20:52:42,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 369 transitions, 3795 flow, removed 92 selfloop flow, removed 19 redundant places. [2022-11-02 20:52:42,782 INFO L231 Difference]: Finished difference. Result has 386 places, 299 transitions, 2701 flow [2022-11-02 20:52:42,783 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2466, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2701, PETRI_PLACES=386, PETRI_TRANSITIONS=299} [2022-11-02 20:52:42,783 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 229 predicate places. [2022-11-02 20:52:42,783 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 299 transitions, 2701 flow [2022-11-02 20:52:42,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:42,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:42,784 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:42,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-11-02 20:52:42,784 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:52:42,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:42,784 INFO L85 PathProgramCache]: Analyzing trace with hash 103584774, now seen corresponding path program 26 times [2022-11-02 20:52:42,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:42,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035984312] [2022-11-02 20:52:42,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:42,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:42,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:43,012 INFO 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 20:52:43,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:43,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035984312] [2022-11-02 20:52:43,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035984312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:43,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:43,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:52:43,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824596513] [2022-11-02 20:52:43,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:43,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:52:43,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:43,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:52:43,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:52:43,014 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:52:43,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 299 transitions, 2701 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:43,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:43,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:52:43,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:44,084 INFO L130 PetriNetUnfolder]: 444/2198 cut-off events. [2022-11-02 20:52:44,084 INFO L131 PetriNetUnfolder]: For 20998/21074 co-relation queries the response was YES. [2022-11-02 20:52:44,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10487 conditions, 2198 events. 444/2198 cut-off events. For 20998/21074 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 17832 event pairs, 251 based on Foata normal form. 7/2120 useless extension candidates. Maximal degree in co-relation 10351. Up to 987 conditions per place. [2022-11-02 20:52:44,124 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 137 selfloop transitions, 38 changer transitions 37/367 dead transitions. [2022-11-02 20:52:44,124 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 367 transitions, 4071 flow [2022-11-02 20:52:44,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:52:44,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-02 20:52:44,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3057 transitions. [2022-11-02 20:52:44,127 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7638680659670165 [2022-11-02 20:52:44,128 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3057 transitions. [2022-11-02 20:52:44,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3057 transitions. [2022-11-02 20:52:44,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:44,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3057 transitions. [2022-11-02 20:52:44,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 132.91304347826087) internal successors, (3057), 23 states have internal predecessors, (3057), 0 states have call successors, (0), 0 states 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 20:52:44,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states 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 20:52:44,138 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states 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 20:52:44,138 INFO L175 Difference]: Start difference. First operand has 386 places, 299 transitions, 2701 flow. Second operand 23 states and 3057 transitions. [2022-11-02 20:52:44,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 367 transitions, 4071 flow [2022-11-02 20:52:44,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 367 transitions, 3904 flow, removed 63 selfloop flow, removed 15 redundant places. [2022-11-02 20:52:44,293 INFO L231 Difference]: Finished difference. Result has 394 places, 310 transitions, 2947 flow [2022-11-02 20:52:44,294 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2609, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2947, PETRI_PLACES=394, PETRI_TRANSITIONS=310} [2022-11-02 20:52:44,294 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 237 predicate places. [2022-11-02 20:52:44,294 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 310 transitions, 2947 flow [2022-11-02 20:52:44,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:44,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:44,295 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:44,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-11-02 20:52:44,295 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:52:44,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:44,296 INFO L85 PathProgramCache]: Analyzing trace with hash -2037467308, now seen corresponding path program 27 times [2022-11-02 20:52:44,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:44,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768355653] [2022-11-02 20:52:44,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:44,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:44,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:44,545 INFO 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 20:52:44,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:44,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768355653] [2022-11-02 20:52:44,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768355653] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:44,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:44,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:52:44,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727678407] [2022-11-02 20:52:44,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:44,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:52:44,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:44,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:52:44,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:52:44,552 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:52:44,553 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 310 transitions, 2947 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:44,554 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:44,554 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:52:44,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:45,671 INFO L130 PetriNetUnfolder]: 441/2197 cut-off events. [2022-11-02 20:52:45,671 INFO L131 PetriNetUnfolder]: For 21189/21265 co-relation queries the response was YES. [2022-11-02 20:52:45,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10541 conditions, 2197 events. 441/2197 cut-off events. For 21189/21265 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 17824 event pairs, 247 based on Foata normal form. 7/2120 useless extension candidates. Maximal degree in co-relation 10402. Up to 985 conditions per place. [2022-11-02 20:52:45,708 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 147 selfloop transitions, 34 changer transitions 38/374 dead transitions. [2022-11-02 20:52:45,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 374 transitions, 4344 flow [2022-11-02 20:52:45,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-02 20:52:45,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-02 20:52:45,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3190 transitions. [2022-11-02 20:52:45,714 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7638888888888888 [2022-11-02 20:52:45,714 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3190 transitions. [2022-11-02 20:52:45,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3190 transitions. [2022-11-02 20:52:45,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:45,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3190 transitions. [2022-11-02 20:52:45,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.91666666666666) internal successors, (3190), 24 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states 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 20:52:45,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states 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 20:52:45,721 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states 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 20:52:45,721 INFO L175 Difference]: Start difference. First operand has 394 places, 310 transitions, 2947 flow. Second operand 24 states and 3190 transitions. [2022-11-02 20:52:45,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 374 transitions, 4344 flow [2022-11-02 20:52:45,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 374 transitions, 4144 flow, removed 67 selfloop flow, removed 14 redundant places. [2022-11-02 20:52:45,888 INFO L231 Difference]: Finished difference. Result has 404 places, 314 transitions, 3048 flow [2022-11-02 20:52:45,888 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2835, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3048, PETRI_PLACES=404, PETRI_TRANSITIONS=314} [2022-11-02 20:52:45,888 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 247 predicate places. [2022-11-02 20:52:45,889 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 314 transitions, 3048 flow [2022-11-02 20:52:45,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:45,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:45,890 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:45,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-11-02 20:52:45,890 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:52:45,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:45,891 INFO L85 PathProgramCache]: Analyzing trace with hash 113900932, now seen corresponding path program 28 times [2022-11-02 20:52:45,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:45,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720695318] [2022-11-02 20:52:45,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:45,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:45,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:46,117 INFO 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 20:52:46,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:46,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720695318] [2022-11-02 20:52:46,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720695318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:46,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:46,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:52:46,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056423833] [2022-11-02 20:52:46,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:46,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:52:46,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:46,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:52:46,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:52:46,121 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:52:46,122 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 314 transitions, 3048 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:46,122 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:46,123 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:52:46,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:47,280 INFO L130 PetriNetUnfolder]: 435/2181 cut-off events. [2022-11-02 20:52:47,280 INFO L131 PetriNetUnfolder]: For 20898/20974 co-relation queries the response was YES. [2022-11-02 20:52:47,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10380 conditions, 2181 events. 435/2181 cut-off events. For 20898/20974 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 17696 event pairs, 240 based on Foata normal form. 7/2108 useless extension candidates. Maximal degree in co-relation 10237. Up to 987 conditions per place. [2022-11-02 20:52:47,321 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 151 selfloop transitions, 35 changer transitions 35/376 dead transitions. [2022-11-02 20:52:47,321 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 376 transitions, 4262 flow [2022-11-02 20:52:47,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:52:47,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-02 20:52:47,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2663 transitions. [2022-11-02 20:52:47,324 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7652298850574712 [2022-11-02 20:52:47,324 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2663 transitions. [2022-11-02 20:52:47,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2663 transitions. [2022-11-02 20:52:47,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:47,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2663 transitions. [2022-11-02 20:52:47,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.15) internal successors, (2663), 20 states have internal predecessors, (2663), 0 states have call successors, (0), 0 states 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 20:52:47,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 20:52:47,329 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 20:52:47,329 INFO L175 Difference]: Start difference. First operand has 404 places, 314 transitions, 3048 flow. Second operand 20 states and 2663 transitions. [2022-11-02 20:52:47,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 376 transitions, 4262 flow [2022-11-02 20:52:47,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 376 transitions, 4095 flow, removed 63 selfloop flow, removed 13 redundant places. [2022-11-02 20:52:47,579 INFO L231 Difference]: Finished difference. Result has 404 places, 320 transitions, 3148 flow [2022-11-02 20:52:47,579 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2934, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3148, PETRI_PLACES=404, PETRI_TRANSITIONS=320} [2022-11-02 20:52:47,580 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 247 predicate places. [2022-11-02 20:52:47,580 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 320 transitions, 3148 flow [2022-11-02 20:52:47,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:47,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:47,581 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:47,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-11-02 20:52:47,581 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:52:47,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:47,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1300721400, now seen corresponding path program 29 times [2022-11-02 20:52:47,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:47,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015265592] [2022-11-02 20:52:47,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:47,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:47,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:47,822 INFO 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 20:52:47,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:47,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015265592] [2022-11-02 20:52:47,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015265592] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:47,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:47,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:52:47,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890941764] [2022-11-02 20:52:47,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:47,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:52:47,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:47,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:52:47,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:52:47,825 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:52:47,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 320 transitions, 3148 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:47,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:47,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:52:47,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:48,919 INFO L130 PetriNetUnfolder]: 432/2169 cut-off events. [2022-11-02 20:52:48,919 INFO L131 PetriNetUnfolder]: For 20468/20544 co-relation queries the response was YES. [2022-11-02 20:52:48,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10296 conditions, 2169 events. 432/2169 cut-off events. For 20468/20544 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 17581 event pairs, 244 based on Foata normal form. 7/2092 useless extension candidates. Maximal degree in co-relation 10155. Up to 985 conditions per place. [2022-11-02 20:52:48,959 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 148 selfloop transitions, 35 changer transitions 33/371 dead transitions. [2022-11-02 20:52:48,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 371 transitions, 4280 flow [2022-11-02 20:52:48,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:52:48,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-02 20:52:48,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2668 transitions. [2022-11-02 20:52:48,962 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7666666666666667 [2022-11-02 20:52:48,963 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2668 transitions. [2022-11-02 20:52:48,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2668 transitions. [2022-11-02 20:52:48,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:48,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2668 transitions. [2022-11-02 20:52:48,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.4) internal successors, (2668), 20 states have internal predecessors, (2668), 0 states have call successors, (0), 0 states 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 20:52:48,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 20:52:48,968 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 20:52:48,968 INFO L175 Difference]: Start difference. First operand has 404 places, 320 transitions, 3148 flow. Second operand 20 states and 2668 transitions. [2022-11-02 20:52:48,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 371 transitions, 4280 flow [2022-11-02 20:52:49,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 371 transitions, 4140 flow, removed 45 selfloop flow, removed 10 redundant places. [2022-11-02 20:52:49,133 INFO L231 Difference]: Finished difference. Result has 413 places, 325 transitions, 3261 flow [2022-11-02 20:52:49,134 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3047, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3261, PETRI_PLACES=413, PETRI_TRANSITIONS=325} [2022-11-02 20:52:49,134 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 256 predicate places. [2022-11-02 20:52:49,134 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 325 transitions, 3261 flow [2022-11-02 20:52:49,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:49,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:49,135 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:49,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-11-02 20:52:49,135 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:52:49,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:49,135 INFO L85 PathProgramCache]: Analyzing trace with hash 892465404, now seen corresponding path program 20 times [2022-11-02 20:52:49,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:49,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216231228] [2022-11-02 20:52:49,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:49,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:49,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:49,366 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 20:52:49,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:49,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216231228] [2022-11-02 20:52:49,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216231228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:49,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:49,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:52:49,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394584134] [2022-11-02 20:52:49,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:49,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:52:49,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:49,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:52:49,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:52:49,370 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:52:49,371 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 325 transitions, 3261 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:49,372 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:49,372 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:52:49,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:50,710 INFO L130 PetriNetUnfolder]: 475/2269 cut-off events. [2022-11-02 20:52:50,710 INFO L131 PetriNetUnfolder]: For 21066/21120 co-relation queries the response was YES. [2022-11-02 20:52:50,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10694 conditions, 2269 events. 475/2269 cut-off events. For 21066/21120 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 18342 event pairs, 238 based on Foata normal form. 9/2195 useless extension candidates. Maximal degree in co-relation 10550. Up to 939 conditions per place. [2022-11-02 20:52:50,750 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 188 selfloop transitions, 38 changer transitions 41/427 dead transitions. [2022-11-02 20:52:50,751 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 427 transitions, 5124 flow [2022-11-02 20:52:50,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-02 20:52:50,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-02 20:52:50,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3703 transitions. [2022-11-02 20:52:50,754 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7600574712643678 [2022-11-02 20:52:50,754 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3703 transitions. [2022-11-02 20:52:50,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3703 transitions. [2022-11-02 20:52:50,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:50,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3703 transitions. [2022-11-02 20:52:50,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.25) internal successors, (3703), 28 states have internal predecessors, (3703), 0 states have call successors, (0), 0 states 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 20:52:50,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states 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 20:52:50,765 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states 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 20:52:50,766 INFO L175 Difference]: Start difference. First operand has 413 places, 325 transitions, 3261 flow. Second operand 28 states and 3703 transitions. [2022-11-02 20:52:50,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 427 transitions, 5124 flow [2022-11-02 20:52:50,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 427 transitions, 4995 flow, removed 42 selfloop flow, removed 11 redundant places. [2022-11-02 20:52:50,948 INFO L231 Difference]: Finished difference. Result has 438 places, 341 transitions, 3533 flow [2022-11-02 20:52:50,948 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3132, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=3533, PETRI_PLACES=438, PETRI_TRANSITIONS=341} [2022-11-02 20:52:50,949 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 281 predicate places. [2022-11-02 20:52:50,949 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 341 transitions, 3533 flow [2022-11-02 20:52:50,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:50,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:50,950 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:50,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-11-02 20:52:50,951 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:52:50,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:50,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1833311066, now seen corresponding path program 30 times [2022-11-02 20:52:50,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:50,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937633809] [2022-11-02 20:52:50,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:50,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:50,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:51,185 INFO 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 20:52:51,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:51,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937633809] [2022-11-02 20:52:51,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937633809] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:51,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:51,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:52:51,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123436214] [2022-11-02 20:52:51,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:51,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:52:51,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:51,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:52:51,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:52:51,190 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:52:51,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 341 transitions, 3533 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:51,191 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:51,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:52:51,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:52,330 INFO L130 PetriNetUnfolder]: 448/2214 cut-off events. [2022-11-02 20:52:52,330 INFO L131 PetriNetUnfolder]: For 22048/22124 co-relation queries the response was YES. [2022-11-02 20:52:52,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10828 conditions, 2214 events. 448/2214 cut-off events. For 22048/22124 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 17953 event pairs, 244 based on Foata normal form. 7/2137 useless extension candidates. Maximal degree in co-relation 10673. Up to 1015 conditions per place. [2022-11-02 20:52:52,367 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 161 selfloop transitions, 42 changer transitions 32/393 dead transitions. [2022-11-02 20:52:52,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 393 transitions, 4678 flow [2022-11-02 20:52:52,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:52:52,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-02 20:52:52,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2666 transitions. [2022-11-02 20:52:52,369 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7660919540229885 [2022-11-02 20:52:52,369 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2666 transitions. [2022-11-02 20:52:52,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2666 transitions. [2022-11-02 20:52:52,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:52,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2666 transitions. [2022-11-02 20:52:52,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.3) internal successors, (2666), 20 states have internal predecessors, (2666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:52,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 20:52:52,374 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 20:52:52,374 INFO L175 Difference]: Start difference. First operand has 438 places, 341 transitions, 3533 flow. Second operand 20 states and 2666 transitions. [2022-11-02 20:52:52,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 393 transitions, 4678 flow [2022-11-02 20:52:52,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 393 transitions, 4589 flow, removed 38 selfloop flow, removed 16 redundant places. [2022-11-02 20:52:52,528 INFO L231 Difference]: Finished difference. Result has 433 places, 349 transitions, 3741 flow [2022-11-02 20:52:52,529 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3456, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3741, PETRI_PLACES=433, PETRI_TRANSITIONS=349} [2022-11-02 20:52:52,529 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 276 predicate places. [2022-11-02 20:52:52,529 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 349 transitions, 3741 flow [2022-11-02 20:52:52,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:52,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:52,529 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:52,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-11-02 20:52:52,530 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:52:52,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:52,530 INFO L85 PathProgramCache]: Analyzing trace with hash 947314090, now seen corresponding path program 31 times [2022-11-02 20:52:52,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:52,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438715858] [2022-11-02 20:52:52,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:52,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:52,718 INFO 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 20:52:52,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:52,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438715858] [2022-11-02 20:52:52,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438715858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:52,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:52,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:52:52,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935976637] [2022-11-02 20:52:52,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:52,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:52:52,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:52,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:52:52,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:52:52,722 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:52:52,723 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 349 transitions, 3741 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:52,723 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:52,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:52:52,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:53,708 INFO L130 PetriNetUnfolder]: 445/2203 cut-off events. [2022-11-02 20:52:53,708 INFO L131 PetriNetUnfolder]: For 22192/22268 co-relation queries the response was YES. [2022-11-02 20:52:53,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10781 conditions, 2203 events. 445/2203 cut-off events. For 22192/22268 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 17796 event pairs, 243 based on Foata normal form. 7/2126 useless extension candidates. Maximal degree in co-relation 10631. Up to 1011 conditions per place. [2022-11-02 20:52:53,744 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 151 selfloop transitions, 52 changer transitions 34/395 dead transitions. [2022-11-02 20:52:53,744 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 395 transitions, 4853 flow [2022-11-02 20:52:53,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:52:53,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-02 20:52:53,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2535 transitions. [2022-11-02 20:52:53,746 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7667876588021778 [2022-11-02 20:52:53,746 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2535 transitions. [2022-11-02 20:52:53,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2535 transitions. [2022-11-02 20:52:53,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:53,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2535 transitions. [2022-11-02 20:52:53,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.42105263157896) internal successors, (2535), 19 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states 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 20:52:53,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states 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 20:52:53,751 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states 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 20:52:53,751 INFO L175 Difference]: Start difference. First operand has 433 places, 349 transitions, 3741 flow. Second operand 19 states and 2535 transitions. [2022-11-02 20:52:53,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 395 transitions, 4853 flow [2022-11-02 20:52:53,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 395 transitions, 4716 flow, removed 38 selfloop flow, removed 9 redundant places. [2022-11-02 20:52:53,916 INFO L231 Difference]: Finished difference. Result has 441 places, 351 transitions, 3851 flow [2022-11-02 20:52:53,916 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3638, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3851, PETRI_PLACES=441, PETRI_TRANSITIONS=351} [2022-11-02 20:52:53,917 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 284 predicate places. [2022-11-02 20:52:53,917 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 351 transitions, 3851 flow [2022-11-02 20:52:53,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:53,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:53,917 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:53,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-11-02 20:52:53,917 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:52:53,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:53,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1490231592, now seen corresponding path program 32 times [2022-11-02 20:52:53,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:53,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334143624] [2022-11-02 20:52:53,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:53,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:54,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:52:54,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:54,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334143624] [2022-11-02 20:52:54,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334143624] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:54,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:54,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:52:54,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301347816] [2022-11-02 20:52:54,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:54,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:52:54,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:54,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:52:54,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:52:54,117 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:52:54,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 351 transitions, 3851 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:54,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:54,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:52:54,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:55,055 INFO L130 PetriNetUnfolder]: 436/2165 cut-off events. [2022-11-02 20:52:55,056 INFO L131 PetriNetUnfolder]: For 21802/21878 co-relation queries the response was YES. [2022-11-02 20:52:55,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10516 conditions, 2165 events. 436/2165 cut-off events. For 21802/21878 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 17461 event pairs, 239 based on Foata normal form. 7/2092 useless extension candidates. Maximal degree in co-relation 10363. Up to 1005 conditions per place. [2022-11-02 20:52:55,091 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 167 selfloop transitions, 20 changer transitions 41/386 dead transitions. [2022-11-02 20:52:55,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 386 transitions, 4580 flow [2022-11-02 20:52:55,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:52:55,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-02 20:52:55,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2526 transitions. [2022-11-02 20:52:55,094 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.764065335753176 [2022-11-02 20:52:55,094 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2526 transitions. [2022-11-02 20:52:55,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2526 transitions. [2022-11-02 20:52:55,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:55,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2526 transitions. [2022-11-02 20:52:55,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 132.94736842105263) internal successors, (2526), 19 states have internal predecessors, (2526), 0 states have call successors, (0), 0 states 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 20:52:55,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states 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 20:52:55,098 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states 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 20:52:55,098 INFO L175 Difference]: Start difference. First operand has 441 places, 351 transitions, 3851 flow. Second operand 19 states and 2526 transitions. [2022-11-02 20:52:55,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 386 transitions, 4580 flow [2022-11-02 20:52:55,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 386 transitions, 4421 flow, removed 34 selfloop flow, removed 12 redundant places. [2022-11-02 20:52:55,263 INFO L231 Difference]: Finished difference. Result has 443 places, 327 transitions, 3330 flow [2022-11-02 20:52:55,264 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3698, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3330, PETRI_PLACES=443, PETRI_TRANSITIONS=327} [2022-11-02 20:52:55,264 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 286 predicate places. [2022-11-02 20:52:55,264 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 327 transitions, 3330 flow [2022-11-02 20:52:55,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:55,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:55,264 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:55,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-11-02 20:52:55,265 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:52:55,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:55,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1712435264, now seen corresponding path program 33 times [2022-11-02 20:52:55,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:55,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356544105] [2022-11-02 20:52:55,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:55,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:55,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:55,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:52:55,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:55,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356544105] [2022-11-02 20:52:55,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356544105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:55,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:55,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:52:55,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236601551] [2022-11-02 20:52:55,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:55,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:52:55,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:55,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:52:55,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:52:55,431 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:52:55,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 327 transitions, 3330 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:55,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:55,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:52:55,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:56,321 INFO L130 PetriNetUnfolder]: 431/2143 cut-off events. [2022-11-02 20:52:56,322 INFO L131 PetriNetUnfolder]: For 21204/21280 co-relation queries the response was YES. [2022-11-02 20:52:56,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10345 conditions, 2143 events. 431/2143 cut-off events. For 21204/21280 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 17271 event pairs, 243 based on Foata normal form. 7/2067 useless extension candidates. Maximal degree in co-relation 10195. Up to 1002 conditions per place. [2022-11-02 20:52:56,358 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 141 selfloop transitions, 28 changer transitions 39/366 dead transitions. [2022-11-02 20:52:56,358 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 366 transitions, 4178 flow [2022-11-02 20:52:56,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:52:56,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-02 20:52:56,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2920 transitions. [2022-11-02 20:52:56,360 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7628004179728317 [2022-11-02 20:52:56,360 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2920 transitions. [2022-11-02 20:52:56,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2920 transitions. [2022-11-02 20:52:56,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:56,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2920 transitions. [2022-11-02 20:52:56,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.72727272727272) internal successors, (2920), 22 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states 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 20:52:56,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states 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 20:52:56,365 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states 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 20:52:56,365 INFO L175 Difference]: Start difference. First operand has 443 places, 327 transitions, 3330 flow. Second operand 22 states and 2920 transitions. [2022-11-02 20:52:56,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 366 transitions, 4178 flow [2022-11-02 20:52:56,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 366 transitions, 3992 flow, removed 21 selfloop flow, removed 18 redundant places. [2022-11-02 20:52:56,519 INFO L231 Difference]: Finished difference. Result has 427 places, 318 transitions, 3104 flow [2022-11-02 20:52:56,519 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3191, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3104, PETRI_PLACES=427, PETRI_TRANSITIONS=318} [2022-11-02 20:52:56,520 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 270 predicate places. [2022-11-02 20:52:56,520 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 318 transitions, 3104 flow [2022-11-02 20:52:56,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:56,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:56,521 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:56,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-11-02 20:52:56,521 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:52:56,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:56,522 INFO L85 PathProgramCache]: Analyzing trace with hash 332097970, now seen corresponding path program 34 times [2022-11-02 20:52:56,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:56,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710956122] [2022-11-02 20:52:56,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:56,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:56,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:56,682 INFO 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 20:52:56,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:56,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710956122] [2022-11-02 20:52:56,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710956122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:56,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:56,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:52:56,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707730489] [2022-11-02 20:52:56,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:56,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:52:56,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:56,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:52:56,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:52:56,684 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:52:56,685 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 318 transitions, 3104 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:56,685 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:56,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:52:56,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:57,605 INFO L130 PetriNetUnfolder]: 421/2120 cut-off events. [2022-11-02 20:52:57,605 INFO L131 PetriNetUnfolder]: For 20204/20280 co-relation queries the response was YES. [2022-11-02 20:52:57,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9969 conditions, 2120 events. 421/2120 cut-off events. For 20204/20280 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 17110 event pairs, 242 based on Foata normal form. 7/2043 useless extension candidates. Maximal degree in co-relation 9820. Up to 995 conditions per place. [2022-11-02 20:52:57,634 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 138 selfloop transitions, 14 changer transitions 40/350 dead transitions. [2022-11-02 20:52:57,635 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 350 transitions, 3779 flow [2022-11-02 20:52:57,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:52:57,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-02 20:52:57,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2788 transitions. [2022-11-02 20:52:57,637 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7629994526546251 [2022-11-02 20:52:57,637 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2788 transitions. [2022-11-02 20:52:57,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2788 transitions. [2022-11-02 20:52:57,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:57,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2788 transitions. [2022-11-02 20:52:57,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.76190476190476) internal successors, (2788), 21 states have internal predecessors, (2788), 0 states have call successors, (0), 0 states 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 20:52:57,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states 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 20:52:57,643 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states 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 20:52:57,643 INFO L175 Difference]: Start difference. First operand has 427 places, 318 transitions, 3104 flow. Second operand 21 states and 2788 transitions. [2022-11-02 20:52:57,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 350 transitions, 3779 flow [2022-11-02 20:52:57,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 350 transitions, 3631 flow, removed 24 selfloop flow, removed 22 redundant places. [2022-11-02 20:52:57,773 INFO L231 Difference]: Finished difference. Result has 413 places, 301 transitions, 2747 flow [2022-11-02 20:52:57,773 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2980, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2747, PETRI_PLACES=413, PETRI_TRANSITIONS=301} [2022-11-02 20:52:57,774 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 256 predicate places. [2022-11-02 20:52:57,774 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 301 transitions, 2747 flow [2022-11-02 20:52:57,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:57,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:57,775 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:57,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-11-02 20:52:57,775 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:52:57,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:57,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1347623990, now seen corresponding path program 35 times [2022-11-02 20:52:57,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:57,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858752651] [2022-11-02 20:52:57,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:57,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:57,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:57,965 INFO 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 20:52:57,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:57,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858752651] [2022-11-02 20:52:57,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858752651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:57,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:57,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:52:57,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301101553] [2022-11-02 20:52:57,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:57,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:52:57,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:57,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:52:57,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:52:57,968 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:52:57,969 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 301 transitions, 2747 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:57,970 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:57,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:52:57,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:58,781 INFO L130 PetriNetUnfolder]: 407/2040 cut-off events. [2022-11-02 20:52:58,781 INFO L131 PetriNetUnfolder]: For 19321/19397 co-relation queries the response was YES. [2022-11-02 20:52:58,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9531 conditions, 2040 events. 407/2040 cut-off events. For 19321/19397 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 16207 event pairs, 242 based on Foata normal form. 7/1965 useless extension candidates. Maximal degree in co-relation 9390. Up to 971 conditions per place. [2022-11-02 20:52:58,816 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 123 selfloop transitions, 2 changer transitions 43/324 dead transitions. [2022-11-02 20:52:58,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 324 transitions, 3229 flow [2022-11-02 20:52:58,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:52:58,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-02 20:52:58,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2647 transitions. [2022-11-02 20:52:58,819 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.760632183908046 [2022-11-02 20:52:58,819 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2647 transitions. [2022-11-02 20:52:58,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2647 transitions. [2022-11-02 20:52:58,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:58,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2647 transitions. [2022-11-02 20:52:58,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.35) internal successors, (2647), 20 states have internal predecessors, (2647), 0 states have call successors, (0), 0 states 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 20:52:58,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 20:52:58,824 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 20:52:58,824 INFO L175 Difference]: Start difference. First operand has 413 places, 301 transitions, 2747 flow. Second operand 20 states and 2647 transitions. [2022-11-02 20:52:58,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 324 transitions, 3229 flow [2022-11-02 20:52:58,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 324 transitions, 3142 flow, removed 17 selfloop flow, removed 20 redundant places. [2022-11-02 20:52:58,950 INFO L231 Difference]: Finished difference. Result has 392 places, 272 transitions, 2275 flow [2022-11-02 20:52:58,950 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2668, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2275, PETRI_PLACES=392, PETRI_TRANSITIONS=272} [2022-11-02 20:52:58,951 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 235 predicate places. [2022-11-02 20:52:58,951 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 272 transitions, 2275 flow [2022-11-02 20:52:58,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:58,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:58,951 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:58,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-11-02 20:52:58,952 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:52:58,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:58,952 INFO L85 PathProgramCache]: Analyzing trace with hash -819479878, now seen corresponding path program 21 times [2022-11-02 20:52:58,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:58,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486039537] [2022-11-02 20:52:58,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:58,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:58,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:59,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:52:59,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:59,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486039537] [2022-11-02 20:52:59,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486039537] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:59,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:59,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:52:59,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379796358] [2022-11-02 20:52:59,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:59,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:52:59,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:59,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:52:59,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:52:59,165 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:52:59,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 272 transitions, 2275 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:52:59,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:59,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:52:59,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:53:00,104 INFO L130 PetriNetUnfolder]: 434/2086 cut-off events. [2022-11-02 20:53:00,104 INFO L131 PetriNetUnfolder]: For 18777/18830 co-relation queries the response was YES. [2022-11-02 20:53:00,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9641 conditions, 2086 events. 434/2086 cut-off events. For 18777/18830 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 16526 event pairs, 250 based on Foata normal form. 9/2008 useless extension candidates. Maximal degree in co-relation 9509. Up to 828 conditions per place. [2022-11-02 20:53:00,133 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 118 selfloop transitions, 42 changer transitions 39/347 dead transitions. [2022-11-02 20:53:00,133 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 347 transitions, 3702 flow [2022-11-02 20:53:00,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-02 20:53:00,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-02 20:53:00,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3575 transitions. [2022-11-02 20:53:00,136 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7609621115368241 [2022-11-02 20:53:00,136 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3575 transitions. [2022-11-02 20:53:00,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3575 transitions. [2022-11-02 20:53:00,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:53:00,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3575 transitions. [2022-11-02 20:53:00,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.40740740740742) internal successors, (3575), 27 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states 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 20:53:00,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states 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 20:53:00,142 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states 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 20:53:00,142 INFO L175 Difference]: Start difference. First operand has 392 places, 272 transitions, 2275 flow. Second operand 27 states and 3575 transitions. [2022-11-02 20:53:00,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 347 transitions, 3702 flow [2022-11-02 20:53:00,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 347 transitions, 3634 flow, removed 26 selfloop flow, removed 25 redundant places. [2022-11-02 20:53:00,241 INFO L231 Difference]: Finished difference. Result has 372 places, 281 transitions, 2543 flow [2022-11-02 20:53:00,241 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2207, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2543, PETRI_PLACES=372, PETRI_TRANSITIONS=281} [2022-11-02 20:53:00,242 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 215 predicate places. [2022-11-02 20:53:00,242 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 281 transitions, 2543 flow [2022-11-02 20:53:00,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:53:00,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:53:00,242 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:53:00,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-11-02 20:53:00,242 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:53:00,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:00,243 INFO L85 PathProgramCache]: Analyzing trace with hash 522290356, now seen corresponding path program 22 times [2022-11-02 20:53:00,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:00,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406351457] [2022-11-02 20:53:00,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:00,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:00,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:00,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:53:00,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:00,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406351457] [2022-11-02 20:53:00,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406351457] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:00,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:00,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:53:00,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220218508] [2022-11-02 20:53:00,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:00,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:53:00,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:00,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:53:00,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:53:00,432 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:53:00,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 281 transitions, 2543 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:53:00,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:53:00,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:53:00,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:53:01,444 INFO L130 PetriNetUnfolder]: 430/2069 cut-off events. [2022-11-02 20:53:01,444 INFO L131 PetriNetUnfolder]: For 18564/18617 co-relation queries the response was YES. [2022-11-02 20:53:01,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9606 conditions, 2069 events. 430/2069 cut-off events. For 18564/18617 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 16345 event pairs, 247 based on Foata normal form. 9/1987 useless extension candidates. Maximal degree in co-relation 9476. Up to 826 conditions per place. [2022-11-02 20:53:01,477 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 122 selfloop transitions, 41 changer transitions 40/351 dead transitions. [2022-11-02 20:53:01,477 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 351 transitions, 4097 flow [2022-11-02 20:53:01,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-02 20:53:01,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-02 20:53:01,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3446 transitions. [2022-11-02 20:53:01,480 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7617152961980548 [2022-11-02 20:53:01,480 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3446 transitions. [2022-11-02 20:53:01,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3446 transitions. [2022-11-02 20:53:01,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:53:01,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3446 transitions. [2022-11-02 20:53:01,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.53846153846155) internal successors, (3446), 26 states have internal predecessors, (3446), 0 states have call successors, (0), 0 states 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 20:53:01,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states 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 20:53:01,486 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states 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 20:53:01,486 INFO L175 Difference]: Start difference. First operand has 372 places, 281 transitions, 2543 flow. Second operand 26 states and 3446 transitions. [2022-11-02 20:53:01,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 351 transitions, 4097 flow [2022-11-02 20:53:01,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 351 transitions, 3912 flow, removed 71 selfloop flow, removed 15 redundant places. [2022-11-02 20:53:01,597 INFO L231 Difference]: Finished difference. Result has 383 places, 289 transitions, 2739 flow [2022-11-02 20:53:01,597 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2418, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2739, PETRI_PLACES=383, PETRI_TRANSITIONS=289} [2022-11-02 20:53:01,598 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 226 predicate places. [2022-11-02 20:53:01,598 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 289 transitions, 2739 flow [2022-11-02 20:53:01,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:53:01,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:53:01,599 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:53:01,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-11-02 20:53:01,599 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:53:01,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:01,599 INFO L85 PathProgramCache]: Analyzing trace with hash -113458978, now seen corresponding path program 23 times [2022-11-02 20:53:01,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:01,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895829376] [2022-11-02 20:53:01,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:01,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:01,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:01,784 INFO 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 20:53:01,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:01,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895829376] [2022-11-02 20:53:01,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895829376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:01,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:01,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:53:01,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630282748] [2022-11-02 20:53:01,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:01,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:53:01,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:01,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:53:01,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:53:01,793 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:53:01,794 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 289 transitions, 2739 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:53:01,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:53:01,795 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:53:01,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:53:02,699 INFO L130 PetriNetUnfolder]: 423/2037 cut-off events. [2022-11-02 20:53:02,699 INFO L131 PetriNetUnfolder]: For 17749/17802 co-relation queries the response was YES. [2022-11-02 20:53:02,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9430 conditions, 2037 events. 423/2037 cut-off events. For 17749/17802 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 15990 event pairs, 234 based on Foata normal form. 9/1963 useless extension candidates. Maximal degree in co-relation 9295. Up to 828 conditions per place. [2022-11-02 20:53:02,722 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 136 selfloop transitions, 43 changer transitions 36/363 dead transitions. [2022-11-02 20:53:02,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 363 transitions, 4171 flow [2022-11-02 20:53:02,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:53:02,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-02 20:53:02,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2920 transitions. [2022-11-02 20:53:02,725 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7628004179728317 [2022-11-02 20:53:02,725 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2920 transitions. [2022-11-02 20:53:02,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2920 transitions. [2022-11-02 20:53:02,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:53:02,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2920 transitions. [2022-11-02 20:53:02,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.72727272727272) internal successors, (2920), 22 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states 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 20:53:02,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states 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 20:53:02,733 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states 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 20:53:02,733 INFO L175 Difference]: Start difference. First operand has 383 places, 289 transitions, 2739 flow. Second operand 22 states and 2920 transitions. [2022-11-02 20:53:02,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 363 transitions, 4171 flow [2022-11-02 20:53:02,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 363 transitions, 3917 flow, removed 70 selfloop flow, removed 21 redundant places. [2022-11-02 20:53:02,839 INFO L231 Difference]: Finished difference. Result has 378 places, 295 transitions, 2764 flow [2022-11-02 20:53:02,839 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2538, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2764, PETRI_PLACES=378, PETRI_TRANSITIONS=295} [2022-11-02 20:53:02,840 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 221 predicate places. [2022-11-02 20:53:02,840 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 295 transitions, 2764 flow [2022-11-02 20:53:02,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:53:02,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:53:02,841 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:53:02,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-11-02 20:53:02,841 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:53:02,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:02,842 INFO L85 PathProgramCache]: Analyzing trace with hash 667477022, now seen corresponding path program 24 times [2022-11-02 20:53:02,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:02,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864409492] [2022-11-02 20:53:02,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:02,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:02,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:03,021 INFO 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 20:53:03,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:03,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864409492] [2022-11-02 20:53:03,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864409492] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:03,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:03,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:53:03,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549026487] [2022-11-02 20:53:03,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:03,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:53:03,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:03,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:53:03,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:53:03,025 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:53:03,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 295 transitions, 2764 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:53:03,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:53:03,025 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:53:03,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:53:03,803 INFO L130 PetriNetUnfolder]: 427/2045 cut-off events. [2022-11-02 20:53:03,803 INFO L131 PetriNetUnfolder]: For 16622/16675 co-relation queries the response was YES. [2022-11-02 20:53:03,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9429 conditions, 2045 events. 427/2045 cut-off events. For 16622/16675 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 16055 event pairs, 247 based on Foata normal form. 9/1966 useless extension candidates. Maximal degree in co-relation 9301. Up to 830 conditions per place. [2022-11-02 20:53:03,833 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 126 selfloop transitions, 50 changer transitions 33/357 dead transitions. [2022-11-02 20:53:03,834 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 357 transitions, 4044 flow [2022-11-02 20:53:03,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:53:03,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-02 20:53:03,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2792 transitions. [2022-11-02 20:53:03,836 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7640941434044882 [2022-11-02 20:53:03,836 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2792 transitions. [2022-11-02 20:53:03,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2792 transitions. [2022-11-02 20:53:03,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:53:03,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2792 transitions. [2022-11-02 20:53:03,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.95238095238096) internal successors, (2792), 21 states have internal predecessors, (2792), 0 states have call successors, (0), 0 states 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 20:53:03,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states 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 20:53:03,841 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states 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 20:53:03,841 INFO L175 Difference]: Start difference. First operand has 378 places, 295 transitions, 2764 flow. Second operand 21 states and 2792 transitions. [2022-11-02 20:53:03,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 357 transitions, 4044 flow [2022-11-02 20:53:03,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 357 transitions, 3924 flow, removed 39 selfloop flow, removed 10 redundant places. [2022-11-02 20:53:03,950 INFO L231 Difference]: Finished difference. Result has 389 places, 305 transitions, 3004 flow [2022-11-02 20:53:03,951 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2683, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3004, PETRI_PLACES=389, PETRI_TRANSITIONS=305} [2022-11-02 20:53:03,951 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 232 predicate places. [2022-11-02 20:53:03,951 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 305 transitions, 3004 flow [2022-11-02 20:53:03,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:53:03,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:53:03,952 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:53:03,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-11-02 20:53:03,952 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:53:03,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:03,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1186364990, now seen corresponding path program 25 times [2022-11-02 20:53:03,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:03,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838326379] [2022-11-02 20:53:03,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:03,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:03,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:04,150 INFO 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 20:53:04,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:04,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838326379] [2022-11-02 20:53:04,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838326379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:04,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:04,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:53:04,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013016656] [2022-11-02 20:53:04,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:04,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:53:04,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:04,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:53:04,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:53:04,152 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:53:04,153 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 305 transitions, 3004 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:53:04,153 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:53:04,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:53:04,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:53:05,129 INFO L130 PetriNetUnfolder]: 429/2056 cut-off events. [2022-11-02 20:53:05,130 INFO L131 PetriNetUnfolder]: For 17085/17138 co-relation queries the response was YES. [2022-11-02 20:53:05,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9575 conditions, 2056 events. 429/2056 cut-off events. For 17085/17138 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 16234 event pairs, 246 based on Foata normal form. 9/1977 useless extension candidates. Maximal degree in co-relation 9443. Up to 831 conditions per place. [2022-11-02 20:53:05,193 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 135 selfloop transitions, 47 changer transitions 32/362 dead transitions. [2022-11-02 20:53:05,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 362 transitions, 4241 flow [2022-11-02 20:53:05,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:53:05,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-02 20:53:05,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2536 transitions. [2022-11-02 20:53:05,197 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7670901391409558 [2022-11-02 20:53:05,197 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2536 transitions. [2022-11-02 20:53:05,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2536 transitions. [2022-11-02 20:53:05,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:53:05,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2536 transitions. [2022-11-02 20:53:05,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.47368421052633) internal successors, (2536), 19 states have internal predecessors, (2536), 0 states have call successors, (0), 0 states 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 20:53:05,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states 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 20:53:05,205 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states 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 20:53:05,206 INFO L175 Difference]: Start difference. First operand has 389 places, 305 transitions, 3004 flow. Second operand 19 states and 2536 transitions. [2022-11-02 20:53:05,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 362 transitions, 4241 flow [2022-11-02 20:53:05,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 362 transitions, 4096 flow, removed 36 selfloop flow, removed 11 redundant places. [2022-11-02 20:53:05,425 INFO L231 Difference]: Finished difference. Result has 395 places, 312 transitions, 3160 flow [2022-11-02 20:53:05,425 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2899, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3160, PETRI_PLACES=395, PETRI_TRANSITIONS=312} [2022-11-02 20:53:05,426 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 238 predicate places. [2022-11-02 20:53:05,427 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 312 transitions, 3160 flow [2022-11-02 20:53:05,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:53:05,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:53:05,428 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:53:05,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-11-02 20:53:05,428 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:53:05,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:05,429 INFO L85 PathProgramCache]: Analyzing trace with hash 922256060, now seen corresponding path program 26 times [2022-11-02 20:53:05,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:05,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053427573] [2022-11-02 20:53:05,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:05,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:05,669 INFO 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 20:53:05,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:05,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053427573] [2022-11-02 20:53:05,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053427573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:05,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:05,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:53:05,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328847607] [2022-11-02 20:53:05,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:05,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:53:05,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:05,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:53:05,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:53:05,673 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:53:05,674 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 312 transitions, 3160 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:53:05,674 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:53:05,674 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:53:05,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:53:06,727 INFO L130 PetriNetUnfolder]: 418/2014 cut-off events. [2022-11-02 20:53:06,727 INFO L131 PetriNetUnfolder]: For 16721/16774 co-relation queries the response was YES. [2022-11-02 20:53:06,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9385 conditions, 2014 events. 418/2014 cut-off events. For 16721/16774 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 15842 event pairs, 248 based on Foata normal form. 9/1934 useless extension candidates. Maximal degree in co-relation 9252. Up to 827 conditions per place. [2022-11-02 20:53:06,761 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 131 selfloop transitions, 34 changer transitions 37/350 dead transitions. [2022-11-02 20:53:06,761 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 350 transitions, 4031 flow [2022-11-02 20:53:06,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:53:06,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-02 20:53:06,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2917 transitions. [2022-11-02 20:53:06,764 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7620167189132706 [2022-11-02 20:53:06,764 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2917 transitions. [2022-11-02 20:53:06,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2917 transitions. [2022-11-02 20:53:06,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:53:06,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2917 transitions. [2022-11-02 20:53:06,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.5909090909091) internal successors, (2917), 22 states have internal predecessors, (2917), 0 states have call successors, (0), 0 states 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 20:53:06,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states 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 20:53:06,769 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states 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 20:53:06,769 INFO L175 Difference]: Start difference. First operand has 395 places, 312 transitions, 3160 flow. Second operand 22 states and 2917 transitions. [2022-11-02 20:53:06,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 350 transitions, 4031 flow [2022-11-02 20:53:06,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 350 transitions, 3921 flow, removed 19 selfloop flow, removed 9 redundant places. [2022-11-02 20:53:06,913 INFO L231 Difference]: Finished difference. Result has 405 places, 296 transitions, 2849 flow [2022-11-02 20:53:06,913 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3062, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2849, PETRI_PLACES=405, PETRI_TRANSITIONS=296} [2022-11-02 20:53:06,913 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 248 predicate places. [2022-11-02 20:53:06,913 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 296 transitions, 2849 flow [2022-11-02 20:53:06,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:53:06,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:53:06,914 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:53:06,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-11-02 20:53:06,914 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:53:06,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:06,915 INFO L85 PathProgramCache]: Analyzing trace with hash -210355396, now seen corresponding path program 27 times [2022-11-02 20:53:06,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:06,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007596220] [2022-11-02 20:53:06,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:06,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:06,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:07,137 INFO 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 20:53:07,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:07,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007596220] [2022-11-02 20:53:07,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007596220] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:07,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:07,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:53:07,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345691551] [2022-11-02 20:53:07,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:07,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:53:07,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:07,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:53:07,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:53:07,141 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:53:07,142 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 296 transitions, 2849 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:53:07,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:53:07,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:53:07,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:53:08,292 INFO L130 PetriNetUnfolder]: 422/2034 cut-off events. [2022-11-02 20:53:08,292 INFO L131 PetriNetUnfolder]: For 17398/17451 co-relation queries the response was YES. [2022-11-02 20:53:08,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9454 conditions, 2034 events. 422/2034 cut-off events. For 17398/17451 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 15991 event pairs, 242 based on Foata normal form. 9/1952 useless extension candidates. Maximal degree in co-relation 9320. Up to 827 conditions per place. [2022-11-02 20:53:08,327 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 119 selfloop transitions, 55 changer transitions 31/353 dead transitions. [2022-11-02 20:53:08,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 353 transitions, 4174 flow [2022-11-02 20:53:08,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:53:08,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-02 20:53:08,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2665 transitions. [2022-11-02 20:53:08,330 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7658045977011494 [2022-11-02 20:53:08,330 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2665 transitions. [2022-11-02 20:53:08,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2665 transitions. [2022-11-02 20:53:08,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:53:08,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2665 transitions. [2022-11-02 20:53:08,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.25) internal successors, (2665), 20 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states 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 20:53:08,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 20:53:08,336 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 20:53:08,336 INFO L175 Difference]: Start difference. First operand has 405 places, 296 transitions, 2849 flow. Second operand 20 states and 2665 transitions. [2022-11-02 20:53:08,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 353 transitions, 4174 flow [2022-11-02 20:53:08,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 353 transitions, 3975 flow, removed 29 selfloop flow, removed 21 redundant places. [2022-11-02 20:53:08,471 INFO L231 Difference]: Finished difference. Result has 394 places, 309 transitions, 3137 flow [2022-11-02 20:53:08,472 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2701, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3137, PETRI_PLACES=394, PETRI_TRANSITIONS=309} [2022-11-02 20:53:08,472 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 237 predicate places. [2022-11-02 20:53:08,472 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 309 transitions, 3137 flow [2022-11-02 20:53:08,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:53:08,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:53:08,473 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:53:08,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-11-02 20:53:08,473 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:53:08,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:08,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1425252972, now seen corresponding path program 28 times [2022-11-02 20:53:08,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:08,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714025712] [2022-11-02 20:53:08,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:08,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:08,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:08,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:53:08,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:08,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714025712] [2022-11-02 20:53:08,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714025712] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:08,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:08,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:53:08,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450077673] [2022-11-02 20:53:08,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:08,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:53:08,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:08,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:53:08,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:53:08,695 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:53:08,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 309 transitions, 3137 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:53:08,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:53:08,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:53:08,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:53:09,779 INFO L130 PetriNetUnfolder]: 427/2053 cut-off events. [2022-11-02 20:53:09,780 INFO L131 PetriNetUnfolder]: For 17106/17159 co-relation queries the response was YES. [2022-11-02 20:53:09,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9603 conditions, 2053 events. 427/2053 cut-off events. For 17106/17159 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 16197 event pairs, 244 based on Foata normal form. 9/1970 useless extension candidates. Maximal degree in co-relation 9471. Up to 827 conditions per place. [2022-11-02 20:53:09,811 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 129 selfloop transitions, 52 changer transitions 31/360 dead transitions. [2022-11-02 20:53:09,811 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 360 transitions, 4357 flow [2022-11-02 20:53:09,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:53:09,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-02 20:53:09,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2537 transitions. [2022-11-02 20:53:09,814 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7673926194797338 [2022-11-02 20:53:09,814 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2537 transitions. [2022-11-02 20:53:09,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2537 transitions. [2022-11-02 20:53:09,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:53:09,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2537 transitions. [2022-11-02 20:53:09,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.52631578947367) internal successors, (2537), 19 states have internal predecessors, (2537), 0 states have call successors, (0), 0 states 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 20:53:09,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states 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 20:53:09,819 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states 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 20:53:09,819 INFO L175 Difference]: Start difference. First operand has 394 places, 309 transitions, 3137 flow. Second operand 19 states and 2537 transitions. [2022-11-02 20:53:09,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 360 transitions, 4357 flow [2022-11-02 20:53:09,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 360 transitions, 4206 flow, removed 66 selfloop flow, removed 8 redundant places. [2022-11-02 20:53:09,956 INFO L231 Difference]: Finished difference. Result has 404 places, 317 transitions, 3332 flow [2022-11-02 20:53:09,956 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3031, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3332, PETRI_PLACES=404, PETRI_TRANSITIONS=317} [2022-11-02 20:53:09,957 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 247 predicate places. [2022-11-02 20:53:09,957 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 317 transitions, 3332 flow [2022-11-02 20:53:09,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:53:09,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:53:09,957 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:53:09,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-11-02 20:53:09,957 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:53:09,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:09,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1442796002, now seen corresponding path program 29 times [2022-11-02 20:53:09,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:09,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629375105] [2022-11-02 20:53:09,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:09,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:09,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:10,140 INFO 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 20:53:10,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:10,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629375105] [2022-11-02 20:53:10,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629375105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:10,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:10,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:53:10,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233463672] [2022-11-02 20:53:10,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:10,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:53:10,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:10,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:53:10,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:53:10,143 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:53:10,143 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 317 transitions, 3332 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:53:10,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:53:10,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:53:10,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:53:11,171 INFO L130 PetriNetUnfolder]: 418/2026 cut-off events. [2022-11-02 20:53:11,172 INFO L131 PetriNetUnfolder]: For 16882/16935 co-relation queries the response was YES. [2022-11-02 20:53:11,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9446 conditions, 2026 events. 418/2026 cut-off events. For 16882/16935 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 16005 event pairs, 240 based on Foata normal form. 9/1946 useless extension candidates. Maximal degree in co-relation 9311. Up to 827 conditions per place. [2022-11-02 20:53:11,208 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 125 selfloop transitions, 53 changer transitions 39/365 dead transitions. [2022-11-02 20:53:11,208 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 365 transitions, 4512 flow [2022-11-02 20:53:11,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-02 20:53:11,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-02 20:53:11,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3185 transitions. [2022-11-02 20:53:11,211 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7626915708812261 [2022-11-02 20:53:11,211 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3185 transitions. [2022-11-02 20:53:11,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3185 transitions. [2022-11-02 20:53:11,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:53:11,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3185 transitions. [2022-11-02 20:53:11,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.70833333333334) internal successors, (3185), 24 states have internal predecessors, (3185), 0 states have call successors, (0), 0 states 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 20:53:11,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states 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 20:53:11,217 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states 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 20:53:11,217 INFO L175 Difference]: Start difference. First operand has 404 places, 317 transitions, 3332 flow. Second operand 24 states and 3185 transitions. [2022-11-02 20:53:11,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 365 transitions, 4512 flow [2022-11-02 20:53:11,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 365 transitions, 4348 flow, removed 29 selfloop flow, removed 10 redundant places. [2022-11-02 20:53:11,357 INFO L231 Difference]: Finished difference. Result has 422 places, 315 transitions, 3331 flow [2022-11-02 20:53:11,358 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3209, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3331, PETRI_PLACES=422, PETRI_TRANSITIONS=315} [2022-11-02 20:53:11,358 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 265 predicate places. [2022-11-02 20:53:11,359 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 315 transitions, 3331 flow [2022-11-02 20:53:11,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:53:11,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:53:11,359 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:53:11,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-11-02 20:53:11,360 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:53:11,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:11,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1532654390, now seen corresponding path program 30 times [2022-11-02 20:53:11,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:11,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083133994] [2022-11-02 20:53:11,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:11,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:11,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:11,540 INFO 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 20:53:11,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:11,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083133994] [2022-11-02 20:53:11,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083133994] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:11,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:11,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:53:11,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446935440] [2022-11-02 20:53:11,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:11,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:53:11,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:11,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:53:11,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:53:11,544 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:53:11,545 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 315 transitions, 3331 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:53:11,546 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:53:11,546 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:53:11,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:53:12,449 INFO L130 PetriNetUnfolder]: 402/1986 cut-off events. [2022-11-02 20:53:12,449 INFO L131 PetriNetUnfolder]: For 16250/16303 co-relation queries the response was YES. [2022-11-02 20:53:12,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9088 conditions, 1986 events. 402/1986 cut-off events. For 16250/16303 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 15554 event pairs, 236 based on Foata normal form. 9/1906 useless extension candidates. Maximal degree in co-relation 8945. Up to 827 conditions per place. [2022-11-02 20:53:12,483 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 118 selfloop transitions, 41 changer transitions 35/342 dead transitions. [2022-11-02 20:53:12,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 342 transitions, 4075 flow [2022-11-02 20:53:12,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:53:12,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-02 20:53:12,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2655 transitions. [2022-11-02 20:53:12,486 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7629310344827587 [2022-11-02 20:53:12,486 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2655 transitions. [2022-11-02 20:53:12,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2655 transitions. [2022-11-02 20:53:12,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:53:12,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2655 transitions. [2022-11-02 20:53:12,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.75) internal successors, (2655), 20 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states 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 20:53:12,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 20:53:12,491 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 20:53:12,491 INFO L175 Difference]: Start difference. First operand has 422 places, 315 transitions, 3331 flow. Second operand 20 states and 2655 transitions. [2022-11-02 20:53:12,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 342 transitions, 4075 flow [2022-11-02 20:53:12,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 342 transitions, 3887 flow, removed 32 selfloop flow, removed 18 redundant places. [2022-11-02 20:53:12,630 INFO L231 Difference]: Finished difference. Result has 415 places, 298 transitions, 2930 flow [2022-11-02 20:53:12,631 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3173, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2930, PETRI_PLACES=415, PETRI_TRANSITIONS=298} [2022-11-02 20:53:12,632 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 258 predicate places. [2022-11-02 20:53:12,632 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 298 transitions, 2930 flow [2022-11-02 20:53:12,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:53:12,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:53:12,633 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:53:12,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-11-02 20:53:12,633 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:53:12,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:12,634 INFO L85 PathProgramCache]: Analyzing trace with hash -100825896, now seen corresponding path program 31 times [2022-11-02 20:53:12,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:12,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540314584] [2022-11-02 20:53:12,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:12,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:12,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:12,841 INFO 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 20:53:12,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:12,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540314584] [2022-11-02 20:53:12,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540314584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:12,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:12,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:53:12,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617087378] [2022-11-02 20:53:12,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:12,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:53:12,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:12,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:53:12,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:53:12,844 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:53:12,845 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 298 transitions, 2930 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:53:12,845 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:53:12,845 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:53:12,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:53:13,786 INFO L130 PetriNetUnfolder]: 398/1965 cut-off events. [2022-11-02 20:53:13,786 INFO L131 PetriNetUnfolder]: For 15603/15656 co-relation queries the response was YES. [2022-11-02 20:53:13,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8893 conditions, 1965 events. 398/1965 cut-off events. For 15603/15656 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 15389 event pairs, 240 based on Foata normal form. 9/1886 useless extension candidates. Maximal degree in co-relation 8758. Up to 827 conditions per place. [2022-11-02 20:53:13,819 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 121 selfloop transitions, 40 changer transitions 32/341 dead transitions. [2022-11-02 20:53:13,820 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 341 transitions, 3969 flow [2022-11-02 20:53:13,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:53:13,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-02 20:53:13,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2666 transitions. [2022-11-02 20:53:13,822 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7660919540229885 [2022-11-02 20:53:13,822 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2666 transitions. [2022-11-02 20:53:13,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2666 transitions. [2022-11-02 20:53:13,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:53:13,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2666 transitions. [2022-11-02 20:53:13,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.3) internal successors, (2666), 20 states have internal predecessors, (2666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:13,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 20:53:13,827 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 20:53:13,828 INFO L175 Difference]: Start difference. First operand has 415 places, 298 transitions, 2930 flow. Second operand 20 states and 2666 transitions. [2022-11-02 20:53:13,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 341 transitions, 3969 flow [2022-11-02 20:53:13,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 341 transitions, 3722 flow, removed 21 selfloop flow, removed 21 redundant places. [2022-11-02 20:53:13,962 INFO L231 Difference]: Finished difference. Result has 396 places, 300 transitions, 2887 flow [2022-11-02 20:53:13,962 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2736, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2887, PETRI_PLACES=396, PETRI_TRANSITIONS=300} [2022-11-02 20:53:13,962 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 239 predicate places. [2022-11-02 20:53:13,963 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 300 transitions, 2887 flow [2022-11-02 20:53:13,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:53:13,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:53:13,963 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:53:13,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-11-02 20:53:13,963 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:53:13,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:13,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1445733772, now seen corresponding path program 32 times [2022-11-02 20:53:13,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:13,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349402517] [2022-11-02 20:53:13,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:13,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:13,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:14,179 INFO 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 20:53:14,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:14,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349402517] [2022-11-02 20:53:14,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349402517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:14,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:14,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:53:14,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144396519] [2022-11-02 20:53:14,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:14,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:53:14,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:14,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:53:14,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:53:14,183 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:53:14,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 300 transitions, 2887 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:53:14,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:53:14,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:53:14,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:53:15,159 INFO L130 PetriNetUnfolder]: 391/1943 cut-off events. [2022-11-02 20:53:15,159 INFO L131 PetriNetUnfolder]: For 14756/14809 co-relation queries the response was YES. [2022-11-02 20:53:15,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8620 conditions, 1943 events. 391/1943 cut-off events. For 14756/14809 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 15167 event pairs, 238 based on Foata normal form. 9/1863 useless extension candidates. Maximal degree in co-relation 8492. Up to 827 conditions per place. [2022-11-02 20:53:15,183 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 119 selfloop transitions, 31 changer transitions 34/332 dead transitions. [2022-11-02 20:53:15,183 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 332 transitions, 3699 flow [2022-11-02 20:53:15,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:53:15,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-02 20:53:15,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2789 transitions. [2022-11-02 20:53:15,185 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7632731253420909 [2022-11-02 20:53:15,186 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2789 transitions. [2022-11-02 20:53:15,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2789 transitions. [2022-11-02 20:53:15,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:53:15,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2789 transitions. [2022-11-02 20:53:15,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.8095238095238) internal successors, (2789), 21 states have internal predecessors, (2789), 0 states have call successors, (0), 0 states 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 20:53:15,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states 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 20:53:15,190 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states 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 20:53:15,191 INFO L175 Difference]: Start difference. First operand has 396 places, 300 transitions, 2887 flow. Second operand 21 states and 2789 transitions. [2022-11-02 20:53:15,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 332 transitions, 3699 flow [2022-11-02 20:53:15,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 332 transitions, 3548 flow, removed 31 selfloop flow, removed 9 redundant places. [2022-11-02 20:53:15,295 INFO L231 Difference]: Finished difference. Result has 406 places, 291 transitions, 2680 flow [2022-11-02 20:53:15,296 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2765, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2680, PETRI_PLACES=406, PETRI_TRANSITIONS=291} [2022-11-02 20:53:15,296 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 249 predicate places. [2022-11-02 20:53:15,296 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 291 transitions, 2680 flow [2022-11-02 20:53:15,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:53:15,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:53:15,296 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:53:15,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-11-02 20:53:15,297 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:53:15,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:15,297 INFO L85 PathProgramCache]: Analyzing trace with hash 189672454, now seen corresponding path program 33 times [2022-11-02 20:53:15,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:15,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850095812] [2022-11-02 20:53:15,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:15,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:15,528 INFO 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 20:53:15,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:15,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850095812] [2022-11-02 20:53:15,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850095812] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:15,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:15,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:53:15,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734660108] [2022-11-02 20:53:15,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:15,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:53:15,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:15,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:53:15,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:53:15,531 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:53:15,531 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 291 transitions, 2680 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:53:15,531 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:53:15,531 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:53:15,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:53:16,333 INFO L130 PetriNetUnfolder]: 376/1905 cut-off events. [2022-11-02 20:53:16,333 INFO L131 PetriNetUnfolder]: For 13464/13517 co-relation queries the response was YES. [2022-11-02 20:53:16,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8172 conditions, 1905 events. 376/1905 cut-off events. For 13464/13517 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 14821 event pairs, 234 based on Foata normal form. 9/1826 useless extension candidates. Maximal degree in co-relation 8041. Up to 821 conditions per place. [2022-11-02 20:53:16,364 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 107 selfloop transitions, 17 changer transitions 36/308 dead transitions. [2022-11-02 20:53:16,364 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 308 transitions, 3156 flow [2022-11-02 20:53:16,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:53:16,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-02 20:53:16,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2909 transitions. [2022-11-02 20:53:16,367 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.759926854754441 [2022-11-02 20:53:16,367 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2909 transitions. [2022-11-02 20:53:16,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2909 transitions. [2022-11-02 20:53:16,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:53:16,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2909 transitions. [2022-11-02 20:53:16,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.22727272727272) internal successors, (2909), 22 states have internal predecessors, (2909), 0 states have call successors, (0), 0 states 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 20:53:16,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states 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 20:53:16,373 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states 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 20:53:16,373 INFO L175 Difference]: Start difference. First operand has 406 places, 291 transitions, 2680 flow. Second operand 22 states and 2909 transitions. [2022-11-02 20:53:16,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 308 transitions, 3156 flow [2022-11-02 20:53:16,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 308 transitions, 2988 flow, removed 17 selfloop flow, removed 23 redundant places. [2022-11-02 20:53:16,464 INFO L231 Difference]: Finished difference. Result has 390 places, 265 transitions, 2140 flow [2022-11-02 20:53:16,464 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2524, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2140, PETRI_PLACES=390, PETRI_TRANSITIONS=265} [2022-11-02 20:53:16,464 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 233 predicate places. [2022-11-02 20:53:16,465 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 265 transitions, 2140 flow [2022-11-02 20:53:16,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:53:16,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:53:16,465 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:53:16,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-11-02 20:53:16,465 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:53:16,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:16,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1064214780, now seen corresponding path program 34 times [2022-11-02 20:53:16,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:16,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512192202] [2022-11-02 20:53:16,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:16,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:16,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:16,655 INFO 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 20:53:16,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:16,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512192202] [2022-11-02 20:53:16,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512192202] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:16,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:16,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:53:16,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975123291] [2022-11-02 20:53:16,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:16,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:53:16,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:16,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:53:16,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:53:16,659 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:53:16,660 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 265 transitions, 2140 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:53:16,660 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:53:16,660 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:53:16,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:53:17,419 INFO L130 PetriNetUnfolder]: 368/1876 cut-off events. [2022-11-02 20:53:17,419 INFO L131 PetriNetUnfolder]: For 12708/12761 co-relation queries the response was YES. [2022-11-02 20:53:17,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7890 conditions, 1876 events. 368/1876 cut-off events. For 12708/12761 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 14578 event pairs, 230 based on Foata normal form. 9/1802 useless extension candidates. Maximal degree in co-relation 7767. Up to 817 conditions per place. [2022-11-02 20:53:17,446 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 103 selfloop transitions, 15 changer transitions 35/301 dead transitions. [2022-11-02 20:53:17,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 301 transitions, 2782 flow [2022-11-02 20:53:17,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:53:17,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:53:17,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2395 transitions. [2022-11-02 20:53:17,449 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7646871008939975 [2022-11-02 20:53:17,449 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2395 transitions. [2022-11-02 20:53:17,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2395 transitions. [2022-11-02 20:53:17,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:53:17,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2395 transitions. [2022-11-02 20:53:17,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 133.05555555555554) internal successors, (2395), 18 states have internal predecessors, (2395), 0 states have call successors, (0), 0 states 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 20:53:17,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states 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 20:53:17,455 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states 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 20:53:17,455 INFO L175 Difference]: Start difference. First operand has 390 places, 265 transitions, 2140 flow. Second operand 18 states and 2395 transitions. [2022-11-02 20:53:17,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 301 transitions, 2782 flow [2022-11-02 20:53:17,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 301 transitions, 2640 flow, removed 18 selfloop flow, removed 21 redundant places. [2022-11-02 20:53:17,543 INFO L231 Difference]: Finished difference. Result has 358 places, 245 transitions, 1748 flow [2022-11-02 20:53:17,543 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2012, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1748, PETRI_PLACES=358, PETRI_TRANSITIONS=245} [2022-11-02 20:53:17,543 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 201 predicate places. [2022-11-02 20:53:17,543 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 245 transitions, 1748 flow [2022-11-02 20:53:17,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:53:17,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:53:17,544 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:53:17,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-11-02 20:53:17,544 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:53:17,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:17,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1748211298, now seen corresponding path program 35 times [2022-11-02 20:53:17,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:17,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494459063] [2022-11-02 20:53:17,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:17,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:17,770 INFO 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 20:53:17,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:17,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494459063] [2022-11-02 20:53:17,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494459063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:17,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:17,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:53:17,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663123077] [2022-11-02 20:53:17,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:17,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:53:17,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:17,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:53:17,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:53:17,773 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-02 20:53:17,773 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 245 transitions, 1748 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:53:17,773 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:53:17,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-02 20:53:17,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:53:18,544 INFO L130 PetriNetUnfolder]: 353/1786 cut-off events. [2022-11-02 20:53:18,544 INFO L131 PetriNetUnfolder]: For 11137/11190 co-relation queries the response was YES. [2022-11-02 20:53:18,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7342 conditions, 1786 events. 353/1786 cut-off events. For 11137/11190 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 13707 event pairs, 230 based on Foata normal form. 9/1711 useless extension candidates. Maximal degree in co-relation 7229. Up to 796 conditions per place. [2022-11-02 20:53:18,568 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 83 selfloop transitions, 4 changer transitions 38/271 dead transitions. [2022-11-02 20:53:18,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 271 transitions, 2214 flow [2022-11-02 20:53:18,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:53:18,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-02 20:53:18,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2648 transitions. [2022-11-02 20:53:18,571 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7609195402298851 [2022-11-02 20:53:18,571 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2648 transitions. [2022-11-02 20:53:18,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2648 transitions. [2022-11-02 20:53:18,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:53:18,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2648 transitions. [2022-11-02 20:53:18,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.4) internal successors, (2648), 20 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states 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 20:53:18,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 20:53:18,576 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 20:53:18,576 INFO L175 Difference]: Start difference. First operand has 358 places, 245 transitions, 1748 flow. Second operand 20 states and 2648 transitions. [2022-11-02 20:53:18,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 271 transitions, 2214 flow [2022-11-02 20:53:18,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 271 transitions, 2096 flow, removed 15 selfloop flow, removed 19 redundant places. [2022-11-02 20:53:18,643 INFO L231 Difference]: Finished difference. Result has 339 places, 219 transitions, 1334 flow [2022-11-02 20:53:18,643 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1645, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1334, PETRI_PLACES=339, PETRI_TRANSITIONS=219} [2022-11-02 20:53:18,643 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 182 predicate places. [2022-11-02 20:53:18,643 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 219 transitions, 1334 flow [2022-11-02 20:53:18,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 20:53:18,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:53:18,644 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:53:18,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-11-02 20:53:18,644 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:53:18,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:18,645 INFO L85 PathProgramCache]: Analyzing trace with hash -337355029, now seen corresponding path program 1 times [2022-11-02 20:53:18,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:18,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108277639] [2022-11-02 20:53:18,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:18,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:19,274 INFO 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 20:53:19,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:19,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108277639] [2022-11-02 20:53:19,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108277639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:19,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:19,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:53:19,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343818635] [2022-11-02 20:53:19,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:19,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:53:19,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:19,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:53:19,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:53:19,278 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-11-02 20:53:19,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 219 transitions, 1334 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 20:53:19,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:53:19,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-11-02 20:53:19,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:53:21,688 INFO L130 PetriNetUnfolder]: 947/3878 cut-off events. [2022-11-02 20:53:21,689 INFO L131 PetriNetUnfolder]: For 20691/20747 co-relation queries the response was YES. [2022-11-02 20:53:21,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13501 conditions, 3878 events. 947/3878 cut-off events. For 20691/20747 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 34064 event pairs, 248 based on Foata normal form. 45/3805 useless extension candidates. Maximal degree in co-relation 13392. Up to 655 conditions per place. [2022-11-02 20:53:21,875 INFO L137 encePairwiseOnDemand]: 145/174 looper letters, 321 selfloop transitions, 40 changer transitions 40/492 dead transitions. [2022-11-02 20:53:21,875 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 492 transitions, 4139 flow [2022-11-02 20:53:21,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-02 20:53:21,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-02 20:53:21,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3046 transitions. [2022-11-02 20:53:21,878 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6252052545155994 [2022-11-02 20:53:21,878 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3046 transitions. [2022-11-02 20:53:21,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3046 transitions. [2022-11-02 20:53:21,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:53:21,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3046 transitions. [2022-11-02 20:53:21,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 108.78571428571429) internal successors, (3046), 28 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states 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 20:53:21,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states 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 20:53:21,886 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states 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 20:53:21,886 INFO L175 Difference]: Start difference. First operand has 339 places, 219 transitions, 1334 flow. Second operand 28 states and 3046 transitions. [2022-11-02 20:53:21,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 492 transitions, 4139 flow [2022-11-02 20:53:21,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 492 transitions, 3930 flow, removed 68 selfloop flow, removed 27 redundant places. [2022-11-02 20:53:21,966 INFO L231 Difference]: Finished difference. Result has 331 places, 241 transitions, 1604 flow [2022-11-02 20:53:21,966 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1248, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1604, PETRI_PLACES=331, PETRI_TRANSITIONS=241} [2022-11-02 20:53:21,967 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 174 predicate places. [2022-11-02 20:53:21,967 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 241 transitions, 1604 flow [2022-11-02 20:53:21,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 20:53:21,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:53:21,967 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:53:21,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-11-02 20:53:21,968 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:53:21,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:21,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1244809497, now seen corresponding path program 2 times [2022-11-02 20:53:21,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:21,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877577978] [2022-11-02 20:53:21,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:21,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:21,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:22,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:53:22,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:22,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877577978] [2022-11-02 20:53:22,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877577978] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:22,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:22,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:53:22,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139315435] [2022-11-02 20:53:22,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:22,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:53:22,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:22,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:53:22,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:53:22,607 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-11-02 20:53:22,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 241 transitions, 1604 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 20:53:22,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:53:22,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-11-02 20:53:22,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:53:25,911 INFO L130 PetriNetUnfolder]: 946/3685 cut-off events. [2022-11-02 20:53:25,911 INFO L131 PetriNetUnfolder]: For 26000/26058 co-relation queries the response was YES. [2022-11-02 20:53:25,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14781 conditions, 3685 events. 946/3685 cut-off events. For 26000/26058 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 31668 event pairs, 503 based on Foata normal form. 46/3614 useless extension candidates. Maximal degree in co-relation 14666. Up to 1129 conditions per place. [2022-11-02 20:53:25,975 INFO L137 encePairwiseOnDemand]: 147/174 looper letters, 272 selfloop transitions, 26 changer transitions 90/479 dead transitions. [2022-11-02 20:53:25,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 479 transitions, 4075 flow [2022-11-02 20:53:25,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-02 20:53:25,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-02 20:53:25,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 4032 transitions. [2022-11-02 20:53:25,979 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6098003629764065 [2022-11-02 20:53:25,979 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 4032 transitions. [2022-11-02 20:53:25,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 4032 transitions. [2022-11-02 20:53:25,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:53:25,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 4032 transitions. [2022-11-02 20:53:25,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 106.10526315789474) internal successors, (4032), 38 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states 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 20:53:25,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 174.0) internal successors, (6786), 39 states have internal predecessors, (6786), 0 states have call successors, (0), 0 states 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 20:53:25,988 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 174.0) internal successors, (6786), 39 states have internal predecessors, (6786), 0 states have call successors, (0), 0 states 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 20:53:25,988 INFO L175 Difference]: Start difference. First operand has 331 places, 241 transitions, 1604 flow. Second operand 38 states and 4032 transitions. [2022-11-02 20:53:25,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 479 transitions, 4075 flow [2022-11-02 20:53:26,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 479 transitions, 3885 flow, removed 92 selfloop flow, removed 12 redundant places. [2022-11-02 20:53:26,179 INFO L231 Difference]: Finished difference. Result has 375 places, 241 transitions, 1674 flow [2022-11-02 20:53:26,180 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1536, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=1674, PETRI_PLACES=375, PETRI_TRANSITIONS=241} [2022-11-02 20:53:26,180 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 218 predicate places. [2022-11-02 20:53:26,180 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 241 transitions, 1674 flow [2022-11-02 20:53:26,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 20:53:26,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:53:26,181 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:53:26,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-11-02 20:53:26,181 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:53:26,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:26,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1076779535, now seen corresponding path program 3 times [2022-11-02 20:53:26,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:26,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872460180] [2022-11-02 20:53:26,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:26,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:26,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:26,783 INFO 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 20:53:26,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:26,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872460180] [2022-11-02 20:53:26,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872460180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:26,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:26,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:53:26,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432071576] [2022-11-02 20:53:26,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:26,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:53:26,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:26,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:53:26,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:53:26,786 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-11-02 20:53:26,787 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 241 transitions, 1674 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 20:53:26,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:53:26,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-11-02 20:53:26,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:53:29,516 INFO L130 PetriNetUnfolder]: 1185/4919 cut-off events. [2022-11-02 20:53:29,516 INFO L131 PetriNetUnfolder]: For 38369/38421 co-relation queries the response was YES. [2022-11-02 20:53:29,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20108 conditions, 4919 events. 1185/4919 cut-off events. For 38369/38421 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 46181 event pairs, 380 based on Foata normal form. 45/4825 useless extension candidates. Maximal degree in co-relation 19971. Up to 1221 conditions per place. [2022-11-02 20:53:29,604 INFO L137 encePairwiseOnDemand]: 142/174 looper letters, 326 selfloop transitions, 131 changer transitions 59/607 dead transitions. [2022-11-02 20:53:29,604 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 607 transitions, 6165 flow [2022-11-02 20:53:29,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-02 20:53:29,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-02 20:53:29,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2756 transitions. [2022-11-02 20:53:29,607 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6335632183908046 [2022-11-02 20:53:29,607 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2756 transitions. [2022-11-02 20:53:29,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2756 transitions. [2022-11-02 20:53:29,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:53:29,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2756 transitions. [2022-11-02 20:53:29,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 110.24) internal successors, (2756), 25 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states 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 20:53:29,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states 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 20:53:29,612 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states 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 20:53:29,612 INFO L175 Difference]: Start difference. First operand has 375 places, 241 transitions, 1674 flow. Second operand 25 states and 2756 transitions. [2022-11-02 20:53:29,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 607 transitions, 6165 flow [2022-11-02 20:53:29,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 607 transitions, 5857 flow, removed 130 selfloop flow, removed 33 redundant places. [2022-11-02 20:53:29,919 INFO L231 Difference]: Finished difference. Result has 356 places, 347 transitions, 3395 flow [2022-11-02 20:53:29,919 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1576, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=3395, PETRI_PLACES=356, PETRI_TRANSITIONS=347} [2022-11-02 20:53:29,919 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 199 predicate places. [2022-11-02 20:53:29,920 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 347 transitions, 3395 flow [2022-11-02 20:53:29,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 20:53:29,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:53:29,920 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:53:29,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-11-02 20:53:29,920 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:53:29,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:29,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1616336421, now seen corresponding path program 4 times [2022-11-02 20:53:29,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:29,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899373109] [2022-11-02 20:53:29,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:29,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:29,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:30,448 INFO 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 20:53:30,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:30,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899373109] [2022-11-02 20:53:30,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899373109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:30,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:30,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:53:30,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582998225] [2022-11-02 20:53:30,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:30,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:53:30,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:30,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:53:30,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:53:30,451 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-11-02 20:53:30,452 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 347 transitions, 3395 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 20:53:30,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:53:30,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-11-02 20:53:30,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:53:34,426 INFO L130 PetriNetUnfolder]: 1377/5903 cut-off events. [2022-11-02 20:53:34,426 INFO L131 PetriNetUnfolder]: For 52133/52192 co-relation queries the response was YES. [2022-11-02 20:53:34,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25394 conditions, 5903 events. 1377/5903 cut-off events. For 52133/52192 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 59111 event pairs, 457 based on Foata normal form. 56/5781 useless extension candidates. Maximal degree in co-relation 25266. Up to 1116 conditions per place. [2022-11-02 20:53:34,523 INFO L137 encePairwiseOnDemand]: 142/174 looper letters, 362 selfloop transitions, 195 changer transitions 83/731 dead transitions. [2022-11-02 20:53:34,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 731 transitions, 8547 flow [2022-11-02 20:53:34,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-02 20:53:34,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-02 20:53:34,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 4144 transitions. [2022-11-02 20:53:34,526 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6267392619479734 [2022-11-02 20:53:34,526 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 4144 transitions. [2022-11-02 20:53:34,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 4144 transitions. [2022-11-02 20:53:34,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:53:34,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 4144 transitions. [2022-11-02 20:53:34,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 109.05263157894737) internal successors, (4144), 38 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states 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 20:53:34,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 174.0) internal successors, (6786), 39 states have internal predecessors, (6786), 0 states have call successors, (0), 0 states 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 20:53:34,533 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 174.0) internal successors, (6786), 39 states have internal predecessors, (6786), 0 states have call successors, (0), 0 states 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 20:53:34,533 INFO L175 Difference]: Start difference. First operand has 356 places, 347 transitions, 3395 flow. Second operand 38 states and 4144 transitions. [2022-11-02 20:53:34,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 731 transitions, 8547 flow [2022-11-02 20:53:34,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 731 transitions, 7611 flow, removed 461 selfloop flow, removed 10 redundant places. [2022-11-02 20:53:34,836 INFO L231 Difference]: Finished difference. Result has 406 places, 433 transitions, 4770 flow [2022-11-02 20:53:34,837 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3053, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=4770, PETRI_PLACES=406, PETRI_TRANSITIONS=433} [2022-11-02 20:53:34,837 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 249 predicate places. [2022-11-02 20:53:34,837 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 433 transitions, 4770 flow [2022-11-02 20:53:34,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 20:53:34,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:53:34,838 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:53:34,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-11-02 20:53:34,838 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:53:34,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:34,838 INFO L85 PathProgramCache]: Analyzing trace with hash 767409305, now seen corresponding path program 5 times [2022-11-02 20:53:34,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:34,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635985372] [2022-11-02 20:53:34,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:34,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:34,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:35,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:53:35,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:35,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635985372] [2022-11-02 20:53:35,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635985372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:35,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:35,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:53:35,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330293629] [2022-11-02 20:53:35,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:35,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:53:35,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:35,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:53:35,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:53:35,318 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-11-02 20:53:35,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 433 transitions, 4770 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 20:53:35,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:53:35,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-11-02 20:53:35,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:53:38,695 INFO L130 PetriNetUnfolder]: 1351/5369 cut-off events. [2022-11-02 20:53:38,696 INFO L131 PetriNetUnfolder]: For 51394/51453 co-relation queries the response was YES. [2022-11-02 20:53:38,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24808 conditions, 5369 events. 1351/5369 cut-off events. For 51394/51453 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 51650 event pairs, 681 based on Foata normal form. 39/5201 useless extension candidates. Maximal degree in co-relation 24657. Up to 2166 conditions per place. [2022-11-02 20:53:38,781 INFO L137 encePairwiseOnDemand]: 147/174 looper letters, 442 selfloop transitions, 82 changer transitions 72/687 dead transitions. [2022-11-02 20:53:38,781 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 687 transitions, 8517 flow [2022-11-02 20:53:38,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-02 20:53:38,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-02 20:53:38,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3734 transitions. [2022-11-02 20:53:38,785 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6131362889983579 [2022-11-02 20:53:38,785 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3734 transitions. [2022-11-02 20:53:38,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3734 transitions. [2022-11-02 20:53:38,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:53:38,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3734 transitions. [2022-11-02 20:53:38,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 106.68571428571428) internal successors, (3734), 35 states have internal predecessors, (3734), 0 states have call successors, (0), 0 states 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 20:53:38,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 174.0) internal successors, (6264), 36 states have internal predecessors, (6264), 0 states have call successors, (0), 0 states 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 20:53:38,793 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 174.0) internal successors, (6264), 36 states have internal predecessors, (6264), 0 states have call successors, (0), 0 states 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 20:53:38,793 INFO L175 Difference]: Start difference. First operand has 406 places, 433 transitions, 4770 flow. Second operand 35 states and 3734 transitions. [2022-11-02 20:53:38,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 687 transitions, 8517 flow [2022-11-02 20:53:39,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 687 transitions, 8223 flow, removed 125 selfloop flow, removed 5 redundant places. [2022-11-02 20:53:39,087 INFO L231 Difference]: Finished difference. Result has 464 places, 467 transitions, 5429 flow [2022-11-02 20:53:39,087 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=4509, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5429, PETRI_PLACES=464, PETRI_TRANSITIONS=467} [2022-11-02 20:53:39,087 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 307 predicate places. [2022-11-02 20:53:39,087 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 467 transitions, 5429 flow [2022-11-02 20:53:39,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 20:53:39,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:53:39,088 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:53:39,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-11-02 20:53:39,088 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:53:39,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:39,088 INFO L85 PathProgramCache]: Analyzing trace with hash 2003729515, now seen corresponding path program 6 times [2022-11-02 20:53:39,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:39,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440343967] [2022-11-02 20:53:39,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:39,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:39,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:39,540 INFO 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 20:53:39,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:39,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440343967] [2022-11-02 20:53:39,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440343967] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:39,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:39,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:53:39,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775321857] [2022-11-02 20:53:39,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:39,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:53:39,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:39,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:53:39,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:53:39,544 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-11-02 20:53:39,545 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 467 transitions, 5429 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 20:53:39,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:53:39,545 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-11-02 20:53:39,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:53:43,268 INFO L130 PetriNetUnfolder]: 1334/5331 cut-off events. [2022-11-02 20:53:43,269 INFO L131 PetriNetUnfolder]: For 54787/54844 co-relation queries the response was YES. [2022-11-02 20:53:43,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25345 conditions, 5331 events. 1334/5331 cut-off events. For 54787/54844 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 51327 event pairs, 678 based on Foata normal form. 39/5165 useless extension candidates. Maximal degree in co-relation 25166. Up to 2147 conditions per place. [2022-11-02 20:53:43,346 INFO L137 encePairwiseOnDemand]: 147/174 looper letters, 442 selfloop transitions, 67 changer transitions 79/679 dead transitions. [2022-11-02 20:53:43,347 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 679 transitions, 8519 flow [2022-11-02 20:53:43,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-02 20:53:43,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-02 20:53:43,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3836 transitions. [2022-11-02 20:53:43,349 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6123882503192848 [2022-11-02 20:53:43,349 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 3836 transitions. [2022-11-02 20:53:43,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 3836 transitions. [2022-11-02 20:53:43,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:53:43,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 3836 transitions. [2022-11-02 20:53:43,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 106.55555555555556) internal successors, (3836), 36 states have internal predecessors, (3836), 0 states have call successors, (0), 0 states 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 20:53:43,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 174.0) internal successors, (6438), 37 states have internal predecessors, (6438), 0 states have call successors, (0), 0 states 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 20:53:43,356 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 174.0) internal successors, (6438), 37 states have internal predecessors, (6438), 0 states have call successors, (0), 0 states 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 20:53:43,356 INFO L175 Difference]: Start difference. First operand has 464 places, 467 transitions, 5429 flow. Second operand 36 states and 3836 transitions. [2022-11-02 20:53:43,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 679 transitions, 8519 flow [2022-11-02 20:53:43,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 679 transitions, 8175 flow, removed 128 selfloop flow, removed 29 redundant places. [2022-11-02 20:53:43,766 INFO L231 Difference]: Finished difference. Result has 474 places, 453 transitions, 5215 flow [2022-11-02 20:53:43,767 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=5269, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=5215, PETRI_PLACES=474, PETRI_TRANSITIONS=453} [2022-11-02 20:53:43,767 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 317 predicate places. [2022-11-02 20:53:43,767 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 453 transitions, 5215 flow [2022-11-02 20:53:43,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 20:53:43,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:53:43,767 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:53:43,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-11-02 20:53:43,768 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:53:43,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:43,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1848957523, now seen corresponding path program 7 times [2022-11-02 20:53:43,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:43,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153967100] [2022-11-02 20:53:43,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:43,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:43,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:44,195 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 20:53:44,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:44,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153967100] [2022-11-02 20:53:44,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153967100] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:44,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:44,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:53:44,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680523283] [2022-11-02 20:53:44,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:44,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:53:44,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:44,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:53:44,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:53:44,199 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-11-02 20:53:44,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 453 transitions, 5215 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 20:53:44,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:53:44,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-11-02 20:53:44,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:53:47,941 INFO L130 PetriNetUnfolder]: 1531/6630 cut-off events. [2022-11-02 20:53:47,941 INFO L131 PetriNetUnfolder]: For 68239/68305 co-relation queries the response was YES. [2022-11-02 20:53:48,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30889 conditions, 6630 events. 1531/6630 cut-off events. For 68239/68305 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 68547 event pairs, 520 based on Foata normal form. 60/6498 useless extension candidates. Maximal degree in co-relation 30707. Up to 1560 conditions per place. [2022-11-02 20:53:48,136 INFO L137 encePairwiseOnDemand]: 142/174 looper letters, 381 selfloop transitions, 204 changer transitions 103/779 dead transitions. [2022-11-02 20:53:48,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 779 transitions, 10329 flow [2022-11-02 20:53:48,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-02 20:53:48,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-02 20:53:48,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3583 transitions. [2022-11-02 20:53:48,140 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6239986067572274 [2022-11-02 20:53:48,140 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3583 transitions. [2022-11-02 20:53:48,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3583 transitions. [2022-11-02 20:53:48,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:53:48,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3583 transitions. [2022-11-02 20:53:48,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 108.57575757575758) internal successors, (3583), 33 states have internal predecessors, (3583), 0 states have call successors, (0), 0 states 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 20:53:48,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 174.0) internal successors, (5916), 34 states have internal predecessors, (5916), 0 states have call successors, (0), 0 states 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 20:53:48,147 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 174.0) internal successors, (5916), 34 states have internal predecessors, (5916), 0 states have call successors, (0), 0 states 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 20:53:48,147 INFO L175 Difference]: Start difference. First operand has 474 places, 453 transitions, 5215 flow. Second operand 33 states and 3583 transitions. [2022-11-02 20:53:48,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 779 transitions, 10329 flow [2022-11-02 20:53:48,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 779 transitions, 9862 flow, removed 98 selfloop flow, removed 35 redundant places. [2022-11-02 20:53:48,599 INFO L231 Difference]: Finished difference. Result has 467 places, 485 transitions, 6285 flow [2022-11-02 20:53:48,599 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=5007, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=6285, PETRI_PLACES=467, PETRI_TRANSITIONS=485} [2022-11-02 20:53:48,599 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 310 predicate places. [2022-11-02 20:53:48,599 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 485 transitions, 6285 flow [2022-11-02 20:53:48,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 20:53:48,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:53:48,600 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:53:48,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-11-02 20:53:48,600 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:53:48,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:48,600 INFO L85 PathProgramCache]: Analyzing trace with hash 2067127503, now seen corresponding path program 8 times [2022-11-02 20:53:48,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:48,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128880049] [2022-11-02 20:53:48,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:48,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:48,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:49,074 INFO 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 20:53:49,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:49,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128880049] [2022-11-02 20:53:49,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128880049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:49,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:49,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:53:49,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120086024] [2022-11-02 20:53:49,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:49,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:53:49,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:49,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:53:49,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:53:49,078 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-11-02 20:53:49,079 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 485 transitions, 6285 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 20:53:49,079 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:53:49,079 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-11-02 20:53:49,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:53:52,921 INFO L130 PetriNetUnfolder]: 1498/6583 cut-off events. [2022-11-02 20:53:52,921 INFO L131 PetriNetUnfolder]: For 70028/70083 co-relation queries the response was YES. [2022-11-02 20:53:53,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30925 conditions, 6583 events. 1498/6583 cut-off events. For 70028/70083 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 67939 event pairs, 480 based on Foata normal form. 53/6437 useless extension candidates. Maximal degree in co-relation 30748. Up to 1478 conditions per place. [2022-11-02 20:53:53,082 INFO L137 encePairwiseOnDemand]: 142/174 looper letters, 377 selfloop transitions, 190 changer transitions 115/773 dead transitions. [2022-11-02 20:53:53,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 773 transitions, 10623 flow [2022-11-02 20:53:53,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-02 20:53:53,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-02 20:53:53,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3683 transitions. [2022-11-02 20:53:53,086 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6225490196078431 [2022-11-02 20:53:53,086 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3683 transitions. [2022-11-02 20:53:53,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3683 transitions. [2022-11-02 20:53:53,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:53:53,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3683 transitions. [2022-11-02 20:53:53,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 108.32352941176471) internal successors, (3683), 34 states have internal predecessors, (3683), 0 states have call successors, (0), 0 states 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 20:53:53,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 174.0) internal successors, (6090), 35 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states 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 20:53:53,093 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 174.0) internal successors, (6090), 35 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states 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 20:53:53,094 INFO L175 Difference]: Start difference. First operand has 467 places, 485 transitions, 6285 flow. Second operand 34 states and 3683 transitions. [2022-11-02 20:53:53,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 773 transitions, 10623 flow [2022-11-02 20:53:53,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 773 transitions, 10233 flow, removed 120 selfloop flow, removed 28 redundant places. [2022-11-02 20:53:53,604 INFO L231 Difference]: Finished difference. Result has 476 places, 471 transitions, 6379 flow [2022-11-02 20:53:53,604 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=6081, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=6379, PETRI_PLACES=476, PETRI_TRANSITIONS=471} [2022-11-02 20:53:53,605 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 319 predicate places. [2022-11-02 20:53:53,605 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 471 transitions, 6379 flow [2022-11-02 20:53:53,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 20:53:53,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:53:53,605 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:53:53,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-11-02 20:53:53,606 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:53:53,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:53,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1258208833, now seen corresponding path program 9 times [2022-11-02 20:53:53,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:53,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113404422] [2022-11-02 20:53:53,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:53,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:53,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:54,123 INFO 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 20:53:54,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:54,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113404422] [2022-11-02 20:53:54,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113404422] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:54,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:54,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:53:54,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879271899] [2022-11-02 20:53:54,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:54,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:53:54,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:54,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:53:54,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:53:54,127 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-11-02 20:53:54,128 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 471 transitions, 6379 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 20:53:54,128 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:53:54,128 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-11-02 20:53:54,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:53:58,981 INFO L130 PetriNetUnfolder]: 1548/6667 cut-off events. [2022-11-02 20:53:58,982 INFO L131 PetriNetUnfolder]: For 80034/80088 co-relation queries the response was YES. [2022-11-02 20:53:59,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33134 conditions, 6667 events. 1548/6667 cut-off events. For 80034/80088 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 68666 event pairs, 507 based on Foata normal form. 50/6538 useless extension candidates. Maximal degree in co-relation 32953. Up to 1759 conditions per place. [2022-11-02 20:53:59,335 INFO L137 encePairwiseOnDemand]: 142/174 looper letters, 363 selfloop transitions, 219 changer transitions 85/758 dead transitions. [2022-11-02 20:53:59,335 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 758 transitions, 11469 flow [2022-11-02 20:53:59,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-02 20:53:59,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-02 20:53:59,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3363 transitions. [2022-11-02 20:53:59,339 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6234705228031145 [2022-11-02 20:53:59,339 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3363 transitions. [2022-11-02 20:53:59,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3363 transitions. [2022-11-02 20:53:59,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:53:59,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3363 transitions. [2022-11-02 20:53:59,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 108.48387096774194) internal successors, (3363), 31 states have internal predecessors, (3363), 0 states have call successors, (0), 0 states 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 20:53:59,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states 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 20:53:59,348 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states 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 20:53:59,348 INFO L175 Difference]: Start difference. First operand has 476 places, 471 transitions, 6379 flow. Second operand 31 states and 3363 transitions. [2022-11-02 20:53:59,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 758 transitions, 11469 flow [2022-11-02 20:54:00,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 758 transitions, 10497 flow, removed 121 selfloop flow, removed 34 redundant places. [2022-11-02 20:54:00,095 INFO L231 Difference]: Finished difference. Result has 467 places, 500 transitions, 7105 flow [2022-11-02 20:54:00,095 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=5802, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=7105, PETRI_PLACES=467, PETRI_TRANSITIONS=500} [2022-11-02 20:54:00,096 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 310 predicate places. [2022-11-02 20:54:00,096 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 500 transitions, 7105 flow [2022-11-02 20:54:00,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 20:54:00,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:54:00,097 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:54:00,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-11-02 20:54:00,097 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:54:00,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:00,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1922811369, now seen corresponding path program 10 times [2022-11-02 20:54:00,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:00,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141023434] [2022-11-02 20:54:00,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:00,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:00,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:00,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:54:00,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:00,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141023434] [2022-11-02 20:54:00,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141023434] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:00,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:00,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:54:00,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076051808] [2022-11-02 20:54:00,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:00,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:54:00,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:00,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:54:00,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:54:00,706 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-11-02 20:54:00,708 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 500 transitions, 7105 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 20:54:00,708 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:54:00,708 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-11-02 20:54:00,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:54:05,691 INFO L130 PetriNetUnfolder]: 1438/6412 cut-off events. [2022-11-02 20:54:05,692 INFO L131 PetriNetUnfolder]: For 71519/71568 co-relation queries the response was YES. [2022-11-02 20:54:05,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30689 conditions, 6412 events. 1438/6412 cut-off events. For 71519/71568 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 65600 event pairs, 459 based on Foata normal form. 45/6271 useless extension candidates. Maximal degree in co-relation 30516. Up to 1478 conditions per place. [2022-11-02 20:54:05,998 INFO L137 encePairwiseOnDemand]: 142/174 looper letters, 371 selfloop transitions, 191 changer transitions 97/750 dead transitions. [2022-11-02 20:54:05,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 750 transitions, 10849 flow [2022-11-02 20:54:05,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-02 20:54:05,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-02 20:54:06,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3476 transitions. [2022-11-02 20:54:06,003 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6242816091954023 [2022-11-02 20:54:06,003 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3476 transitions. [2022-11-02 20:54:06,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3476 transitions. [2022-11-02 20:54:06,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:54:06,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3476 transitions. [2022-11-02 20:54:06,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 108.625) internal successors, (3476), 32 states have internal predecessors, (3476), 0 states have call successors, (0), 0 states 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 20:54:06,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 174.0) internal successors, (5742), 33 states have internal predecessors, (5742), 0 states have call successors, (0), 0 states 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 20:54:06,013 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 174.0) internal successors, (5742), 33 states have internal predecessors, (5742), 0 states have call successors, (0), 0 states 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 20:54:06,013 INFO L175 Difference]: Start difference. First operand has 467 places, 500 transitions, 7105 flow. Second operand 32 states and 3476 transitions. [2022-11-02 20:54:06,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 750 transitions, 10849 flow [2022-11-02 20:54:06,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 750 transitions, 10355 flow, removed 102 selfloop flow, removed 25 redundant places. [2022-11-02 20:54:06,640 INFO L231 Difference]: Finished difference. Result has 476 places, 470 transitions, 6574 flow [2022-11-02 20:54:06,641 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=6781, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=6574, PETRI_PLACES=476, PETRI_TRANSITIONS=470} [2022-11-02 20:54:06,642 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 319 predicate places. [2022-11-02 20:54:06,642 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 470 transitions, 6574 flow [2022-11-02 20:54:06,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 20:54:06,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:54:06,643 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:54:06,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-11-02 20:54:06,643 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:54:06,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:06,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1789453971, now seen corresponding path program 11 times [2022-11-02 20:54:06,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:06,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250320225] [2022-11-02 20:54:06,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:06,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:06,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:06,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:54:06,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:06,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250320225] [2022-11-02 20:54:06,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250320225] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:06,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:06,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:54:06,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962245746] [2022-11-02 20:54:06,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:06,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:54:06,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:06,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:54:06,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:54:06,800 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 174 [2022-11-02 20:54:06,801 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 470 transitions, 6574 flow. Second operand has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states 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 20:54:06,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:54:06,801 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 174 [2022-11-02 20:54:06,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:54:07,395 INFO L130 PetriNetUnfolder]: 171/1415 cut-off events. [2022-11-02 20:54:07,395 INFO L131 PetriNetUnfolder]: For 17279/17310 co-relation queries the response was YES. [2022-11-02 20:54:07,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6555 conditions, 1415 events. 171/1415 cut-off events. For 17279/17310 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 10273 event pairs, 88 based on Foata normal form. 27/1388 useless extension candidates. Maximal degree in co-relation 6377. Up to 101 conditions per place. [2022-11-02 20:54:07,427 INFO L137 encePairwiseOnDemand]: 162/174 looper letters, 42 selfloop transitions, 6 changer transitions 59/283 dead transitions. [2022-11-02 20:54:07,427 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 283 transitions, 2856 flow [2022-11-02 20:54:07,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:54:07,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 20:54:07,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 751 transitions. [2022-11-02 20:54:07,429 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8632183908045977 [2022-11-02 20:54:07,429 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 751 transitions. [2022-11-02 20:54:07,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 751 transitions. [2022-11-02 20:54:07,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:54:07,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 751 transitions. [2022-11-02 20:54:07,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.2) internal successors, (751), 5 states have internal predecessors, (751), 0 states have call successors, (0), 0 states 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 20:54:07,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states 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 20:54:07,431 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states 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 20:54:07,431 INFO L175 Difference]: Start difference. First operand has 476 places, 470 transitions, 6574 flow. Second operand 5 states and 751 transitions. [2022-11-02 20:54:07,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 283 transitions, 2856 flow [2022-11-02 20:54:07,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 283 transitions, 2345 flow, removed 150 selfloop flow, removed 78 redundant places. [2022-11-02 20:54:07,585 INFO L231 Difference]: Finished difference. Result has 354 places, 219 transitions, 1612 flow [2022-11-02 20:54:07,585 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2128, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1612, PETRI_PLACES=354, PETRI_TRANSITIONS=219} [2022-11-02 20:54:07,586 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 197 predicate places. [2022-11-02 20:54:07,586 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 219 transitions, 1612 flow [2022-11-02 20:54:07,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states 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 20:54:07,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:54:07,586 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:54:07,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-11-02 20:54:07,586 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:54:07,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:07,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1995529451, now seen corresponding path program 1 times [2022-11-02 20:54:07,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:07,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615265311] [2022-11-02 20:54:07,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:07,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:07,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:07,813 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 20:54:07,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:07,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615265311] [2022-11-02 20:54:07,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615265311] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:07,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:07,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:54:07,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591365298] [2022-11-02 20:54:07,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:07,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:54:07,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:07,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:54:07,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:54:07,816 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 174 [2022-11-02 20:54:07,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 219 transitions, 1612 flow. Second operand has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states 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 20:54:07,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:54:07,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 174 [2022-11-02 20:54:07,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:54:08,289 INFO L130 PetriNetUnfolder]: 114/998 cut-off events. [2022-11-02 20:54:08,289 INFO L131 PetriNetUnfolder]: For 6660/6669 co-relation queries the response was YES. [2022-11-02 20:54:08,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3653 conditions, 998 events. 114/998 cut-off events. For 6660/6669 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 6182 event pairs, 58 based on Foata normal form. 8/966 useless extension candidates. Maximal degree in co-relation 3534. Up to 68 conditions per place. [2022-11-02 20:54:08,316 INFO L137 encePairwiseOnDemand]: 166/174 looper letters, 39 selfloop transitions, 12 changer transitions 0/227 dead transitions. [2022-11-02 20:54:08,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 227 transitions, 1712 flow [2022-11-02 20:54:08,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:54:08,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 20:54:08,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 743 transitions. [2022-11-02 20:54:08,319 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8540229885057471 [2022-11-02 20:54:08,320 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 743 transitions. [2022-11-02 20:54:08,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 743 transitions. [2022-11-02 20:54:08,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:54:08,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 743 transitions. [2022-11-02 20:54:08,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.6) internal successors, (743), 5 states have internal predecessors, (743), 0 states have call successors, (0), 0 states 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 20:54:08,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states 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 20:54:08,324 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states 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 20:54:08,324 INFO L175 Difference]: Start difference. First operand has 354 places, 219 transitions, 1612 flow. Second operand 5 states and 743 transitions. [2022-11-02 20:54:08,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 227 transitions, 1712 flow [2022-11-02 20:54:08,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 227 transitions, 1454 flow, removed 38 selfloop flow, removed 40 redundant places. [2022-11-02 20:54:08,381 INFO L231 Difference]: Finished difference. Result has 286 places, 216 transitions, 1342 flow [2022-11-02 20:54:08,381 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1300, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1342, PETRI_PLACES=286, PETRI_TRANSITIONS=216} [2022-11-02 20:54:08,382 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 129 predicate places. [2022-11-02 20:54:08,382 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 216 transitions, 1342 flow [2022-11-02 20:54:08,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states 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 20:54:08,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:54:08,383 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:54:08,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-11-02 20:54:08,384 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:54:08,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:08,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1852721659, now seen corresponding path program 2 times [2022-11-02 20:54:08,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:08,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032286299] [2022-11-02 20:54:08,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:08,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:08,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:08,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:54:08,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:08,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032286299] [2022-11-02 20:54:08,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032286299] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:08,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:08,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:54:08,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654803088] [2022-11-02 20:54:08,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:08,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:54:08,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:08,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:54:08,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:54:08,507 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 174 [2022-11-02 20:54:08,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 216 transitions, 1342 flow. Second operand has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states 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 20:54:08,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:54:08,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 174 [2022-11-02 20:54:08,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:54:08,760 INFO L130 PetriNetUnfolder]: 78/720 cut-off events. [2022-11-02 20:54:08,760 INFO L131 PetriNetUnfolder]: For 2600/2607 co-relation queries the response was YES. [2022-11-02 20:54:08,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2235 conditions, 720 events. 78/720 cut-off events. For 2600/2607 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3825 event pairs, 46 based on Foata normal form. 5/690 useless extension candidates. Maximal degree in co-relation 2147. Up to 64 conditions per place. [2022-11-02 20:54:08,770 INFO L137 encePairwiseOnDemand]: 168/174 looper letters, 31 selfloop transitions, 3 changer transitions 5/183 dead transitions. [2022-11-02 20:54:08,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 183 transitions, 952 flow [2022-11-02 20:54:08,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:54:08,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-02 20:54:08,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 592 transitions. [2022-11-02 20:54:08,771 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8505747126436781 [2022-11-02 20:54:08,772 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 592 transitions. [2022-11-02 20:54:08,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 592 transitions. [2022-11-02 20:54:08,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:54:08,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 592 transitions. [2022-11-02 20:54:08,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states 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 20:54:08,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states 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 20:54:08,774 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states 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 20:54:08,774 INFO L175 Difference]: Start difference. First operand has 286 places, 216 transitions, 1342 flow. Second operand 4 states and 592 transitions. [2022-11-02 20:54:08,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 183 transitions, 952 flow [2022-11-02 20:54:08,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 183 transitions, 872 flow, removed 21 selfloop flow, removed 19 redundant places. [2022-11-02 20:54:08,791 INFO L231 Difference]: Finished difference. Result has 247 places, 175 transitions, 748 flow [2022-11-02 20:54:08,791 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=748, PETRI_PLACES=247, PETRI_TRANSITIONS=175} [2022-11-02 20:54:08,791 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 90 predicate places. [2022-11-02 20:54:08,792 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 175 transitions, 748 flow [2022-11-02 20:54:08,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states 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 20:54:08,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:54:08,792 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:54:08,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-11-02 20:54:08,792 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:54:08,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:08,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1746092857, now seen corresponding path program 12 times [2022-11-02 20:54:08,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:08,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147726187] [2022-11-02 20:54:08,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:08,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:08,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:09,418 INFO 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 20:54:09,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:09,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147726187] [2022-11-02 20:54:09,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147726187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:09,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:09,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:54:09,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556002466] [2022-11-02 20:54:09,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:09,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:54:09,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:09,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:54:09,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:54:09,422 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-11-02 20:54:09,424 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 175 transitions, 748 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 20:54:09,424 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:54:09,424 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-11-02 20:54:09,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:54:13,405 INFO L130 PetriNetUnfolder]: 354/1406 cut-off events. [2022-11-02 20:54:13,406 INFO L131 PetriNetUnfolder]: For 4233/4239 co-relation queries the response was YES. [2022-11-02 20:54:13,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4696 conditions, 1406 events. 354/1406 cut-off events. For 4233/4239 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9145 event pairs, 160 based on Foata normal form. 3/1353 useless extension candidates. Maximal degree in co-relation 4623. Up to 437 conditions per place. [2022-11-02 20:54:13,435 INFO L137 encePairwiseOnDemand]: 149/174 looper letters, 154 selfloop transitions, 18 changer transitions 78/335 dead transitions. [2022-11-02 20:54:13,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 335 transitions, 2174 flow [2022-11-02 20:54:13,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-02 20:54:13,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-02 20:54:13,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 3894 transitions. [2022-11-02 20:54:13,441 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6048462255358807 [2022-11-02 20:54:13,441 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 3894 transitions. [2022-11-02 20:54:13,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 3894 transitions. [2022-11-02 20:54:13,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:54:13,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 3894 transitions. [2022-11-02 20:54:13,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 105.24324324324324) internal successors, (3894), 37 states have internal predecessors, (3894), 0 states have call successors, (0), 0 states 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 20:54:13,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 174.0) internal successors, (6612), 38 states have internal predecessors, (6612), 0 states have call successors, (0), 0 states 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 20:54:13,456 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 174.0) internal successors, (6612), 38 states have internal predecessors, (6612), 0 states have call successors, (0), 0 states 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 20:54:13,457 INFO L175 Difference]: Start difference. First operand has 247 places, 175 transitions, 748 flow. Second operand 37 states and 3894 transitions. [2022-11-02 20:54:13,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 335 transitions, 2174 flow [2022-11-02 20:54:13,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 335 transitions, 2129 flow, removed 9 selfloop flow, removed 5 redundant places. [2022-11-02 20:54:13,484 INFO L231 Difference]: Finished difference. Result has 306 places, 175 transitions, 839 flow [2022-11-02 20:54:13,484 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=729, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=839, PETRI_PLACES=306, PETRI_TRANSITIONS=175} [2022-11-02 20:54:13,485 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 149 predicate places. [2022-11-02 20:54:13,485 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 175 transitions, 839 flow [2022-11-02 20:54:13,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 20:54:13,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:54:13,486 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:54:13,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-11-02 20:54:13,486 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:54:13,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:13,487 INFO L85 PathProgramCache]: Analyzing trace with hash 460194399, now seen corresponding path program 13 times [2022-11-02 20:54:13,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:13,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568104770] [2022-11-02 20:54:13,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:13,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:14,083 INFO 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 20:54:14,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:14,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568104770] [2022-11-02 20:54:14,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568104770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:14,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:14,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:54:14,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571083602] [2022-11-02 20:54:14,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:14,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:54:14,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:14,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:54:14,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:54:14,087 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-11-02 20:54:14,089 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 175 transitions, 839 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 20:54:14,089 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:54:14,089 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-11-02 20:54:14,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:54:15,891 INFO L130 PetriNetUnfolder]: 372/1383 cut-off events. [2022-11-02 20:54:15,891 INFO L131 PetriNetUnfolder]: For 6810/6813 co-relation queries the response was YES. [2022-11-02 20:54:15,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5364 conditions, 1383 events. 372/1383 cut-off events. For 6810/6813 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 8647 event pairs, 154 based on Foata normal form. 4/1329 useless extension candidates. Maximal degree in co-relation 5263. Up to 437 conditions per place. [2022-11-02 20:54:15,905 INFO L137 encePairwiseOnDemand]: 150/174 looper letters, 140 selfloop transitions, 40 changer transitions 31/296 dead transitions. [2022-11-02 20:54:15,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 296 transitions, 2387 flow [2022-11-02 20:54:15,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-02 20:54:15,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-02 20:54:15,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2554 transitions. [2022-11-02 20:54:15,907 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6115900383141762 [2022-11-02 20:54:15,907 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2554 transitions. [2022-11-02 20:54:15,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2554 transitions. [2022-11-02 20:54:15,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:54:15,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2554 transitions. [2022-11-02 20:54:15,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 106.41666666666667) internal successors, (2554), 24 states have internal predecessors, (2554), 0 states have call successors, (0), 0 states 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 20:54:15,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states 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 20:54:15,911 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states 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 20:54:15,911 INFO L175 Difference]: Start difference. First operand has 306 places, 175 transitions, 839 flow. Second operand 24 states and 2554 transitions. [2022-11-02 20:54:15,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 296 transitions, 2387 flow [2022-11-02 20:54:15,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 296 transitions, 2094 flow, removed 102 selfloop flow, removed 34 redundant places. [2022-11-02 20:54:15,931 INFO L231 Difference]: Finished difference. Result has 282 places, 204 transitions, 1307 flow [2022-11-02 20:54:15,931 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1307, PETRI_PLACES=282, PETRI_TRANSITIONS=204} [2022-11-02 20:54:15,931 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 125 predicate places. [2022-11-02 20:54:15,931 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 204 transitions, 1307 flow [2022-11-02 20:54:15,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 20:54:15,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:54:15,932 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:54:15,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-11-02 20:54:15,933 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:54:15,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:15,934 INFO L85 PathProgramCache]: Analyzing trace with hash -2039489857, now seen corresponding path program 14 times [2022-11-02 20:54:15,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:15,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420962554] [2022-11-02 20:54:15,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:15,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:15,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:16,282 INFO 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 20:54:16,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:16,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420962554] [2022-11-02 20:54:16,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420962554] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:16,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:16,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:54:16,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865147991] [2022-11-02 20:54:16,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:16,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:54:16,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:16,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:54:16,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:54:16,286 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-11-02 20:54:16,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 204 transitions, 1307 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 20:54:16,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:54:16,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-11-02 20:54:16,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:54:18,492 INFO L130 PetriNetUnfolder]: 398/1496 cut-off events. [2022-11-02 20:54:18,492 INFO L131 PetriNetUnfolder]: For 7425/7433 co-relation queries the response was YES. [2022-11-02 20:54:18,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5862 conditions, 1496 events. 398/1496 cut-off events. For 7425/7433 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 9750 event pairs, 164 based on Foata normal form. 5/1439 useless extension candidates. Maximal degree in co-relation 5773. Up to 437 conditions per place. [2022-11-02 20:54:18,509 INFO L137 encePairwiseOnDemand]: 150/174 looper letters, 172 selfloop transitions, 35 changer transitions 75/367 dead transitions. [2022-11-02 20:54:18,509 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 367 transitions, 3136 flow [2022-11-02 20:54:18,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-02 20:54:18,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-02 20:54:18,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3690 transitions. [2022-11-02 20:54:18,513 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6059113300492611 [2022-11-02 20:54:18,513 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3690 transitions. [2022-11-02 20:54:18,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3690 transitions. [2022-11-02 20:54:18,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:54:18,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3690 transitions. [2022-11-02 20:54:18,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 105.42857142857143) internal successors, (3690), 35 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states 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 20:54:18,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 174.0) internal successors, (6264), 36 states have internal predecessors, (6264), 0 states have call successors, (0), 0 states 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 20:54:18,521 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 174.0) internal successors, (6264), 36 states have internal predecessors, (6264), 0 states have call successors, (0), 0 states 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 20:54:18,521 INFO L175 Difference]: Start difference. First operand has 282 places, 204 transitions, 1307 flow. Second operand 35 states and 3690 transitions. [2022-11-02 20:54:18,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 367 transitions, 3136 flow [2022-11-02 20:54:18,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 367 transitions, 2839 flow, removed 132 selfloop flow, removed 12 redundant places. [2022-11-02 20:54:18,559 INFO L231 Difference]: Finished difference. Result has 324 places, 203 transitions, 1306 flow [2022-11-02 20:54:18,560 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1148, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1306, PETRI_PLACES=324, PETRI_TRANSITIONS=203} [2022-11-02 20:54:18,560 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 167 predicate places. [2022-11-02 20:54:18,560 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 203 transitions, 1306 flow [2022-11-02 20:54:18,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 20:54:18,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:54:18,561 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:54:18,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-11-02 20:54:18,562 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:54:18,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:18,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1334750369, now seen corresponding path program 15 times [2022-11-02 20:54:18,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:18,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885708584] [2022-11-02 20:54:18,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:18,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:18,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:18,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:54:18,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:18,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885708584] [2022-11-02 20:54:18,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885708584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:18,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:18,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:54:18,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686424883] [2022-11-02 20:54:18,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:18,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:54:18,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:18,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:54:18,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:54:18,974 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-11-02 20:54:18,975 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 203 transitions, 1306 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 20:54:18,975 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:54:18,975 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-11-02 20:54:18,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:54:21,548 INFO L130 PetriNetUnfolder]: 447/1765 cut-off events. [2022-11-02 20:54:21,548 INFO L131 PetriNetUnfolder]: For 12480/12488 co-relation queries the response was YES. [2022-11-02 20:54:21,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7334 conditions, 1765 events. 447/1765 cut-off events. For 12480/12488 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 12271 event pairs, 191 based on Foata normal form. 5/1699 useless extension candidates. Maximal degree in co-relation 7224. Up to 437 conditions per place. [2022-11-02 20:54:21,573 INFO L137 encePairwiseOnDemand]: 150/174 looper letters, 185 selfloop transitions, 35 changer transitions 72/377 dead transitions. [2022-11-02 20:54:21,573 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 377 transitions, 3420 flow [2022-11-02 20:54:21,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-02 20:54:21,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-02 20:54:21,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3597 transitions. [2022-11-02 20:54:21,577 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6080121703853956 [2022-11-02 20:54:21,577 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3597 transitions. [2022-11-02 20:54:21,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3597 transitions. [2022-11-02 20:54:21,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:54:21,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3597 transitions. [2022-11-02 20:54:21,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 105.79411764705883) internal successors, (3597), 34 states have internal predecessors, (3597), 0 states have call successors, (0), 0 states 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 20:54:21,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 174.0) internal successors, (6090), 35 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states 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 20:54:21,585 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 174.0) internal successors, (6090), 35 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states 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 20:54:21,585 INFO L175 Difference]: Start difference. First operand has 324 places, 203 transitions, 1306 flow. Second operand 34 states and 3597 transitions. [2022-11-02 20:54:21,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 377 transitions, 3420 flow [2022-11-02 20:54:21,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 377 transitions, 2959 flow, removed 157 selfloop flow, removed 35 redundant places. [2022-11-02 20:54:21,635 INFO L231 Difference]: Finished difference. Result has 324 places, 209 transitions, 1463 flow [2022-11-02 20:54:21,636 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1157, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1463, PETRI_PLACES=324, PETRI_TRANSITIONS=209} [2022-11-02 20:54:21,636 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 167 predicate places. [2022-11-02 20:54:21,636 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 209 transitions, 1463 flow [2022-11-02 20:54:21,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 20:54:21,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:54:21,637 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:54:21,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-11-02 20:54:21,638 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:54:21,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:21,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1305103957, now seen corresponding path program 16 times [2022-11-02 20:54:21,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:21,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717919391] [2022-11-02 20:54:21,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:21,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:22,168 INFO 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 20:54:22,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:22,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717919391] [2022-11-02 20:54:22,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717919391] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:22,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:22,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:54:22,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989757548] [2022-11-02 20:54:22,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:22,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:54:22,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:22,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:54:22,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:54:22,173 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-11-02 20:54:22,174 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 209 transitions, 1463 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 20:54:22,174 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:54:22,175 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-11-02 20:54:22,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:54:24,612 INFO L130 PetriNetUnfolder]: 440/1698 cut-off events. [2022-11-02 20:54:24,612 INFO L131 PetriNetUnfolder]: For 13183/13194 co-relation queries the response was YES. [2022-11-02 20:54:24,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7557 conditions, 1698 events. 440/1698 cut-off events. For 13183/13194 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 11658 event pairs, 203 based on Foata normal form. 4/1633 useless extension candidates. Maximal degree in co-relation 7446. Up to 437 conditions per place. [2022-11-02 20:54:24,637 INFO L137 encePairwiseOnDemand]: 150/174 looper letters, 192 selfloop transitions, 36 changer transitions 72/385 dead transitions. [2022-11-02 20:54:24,637 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 385 transitions, 3697 flow [2022-11-02 20:54:24,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-02 20:54:24,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-02 20:54:24,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3614 transitions. [2022-11-02 20:54:24,640 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6108857336037864 [2022-11-02 20:54:24,640 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3614 transitions. [2022-11-02 20:54:24,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3614 transitions. [2022-11-02 20:54:24,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:54:24,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3614 transitions. [2022-11-02 20:54:24,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 106.29411764705883) internal successors, (3614), 34 states have internal predecessors, (3614), 0 states have call successors, (0), 0 states 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 20:54:24,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 174.0) internal successors, (6090), 35 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states 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 20:54:24,647 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 174.0) internal successors, (6090), 35 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states 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 20:54:24,647 INFO L175 Difference]: Start difference. First operand has 324 places, 209 transitions, 1463 flow. Second operand 34 states and 3614 transitions. [2022-11-02 20:54:24,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 385 transitions, 3697 flow [2022-11-02 20:54:24,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 385 transitions, 3309 flow, removed 178 selfloop flow, removed 25 redundant places. [2022-11-02 20:54:24,702 INFO L231 Difference]: Finished difference. Result has 334 places, 209 transitions, 1531 flow [2022-11-02 20:54:24,703 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1376, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1531, PETRI_PLACES=334, PETRI_TRANSITIONS=209} [2022-11-02 20:54:24,703 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 177 predicate places. [2022-11-02 20:54:24,703 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 209 transitions, 1531 flow [2022-11-02 20:54:24,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 20:54:24,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:54:24,704 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:54:24,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-11-02 20:54:24,705 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:54:24,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:24,705 INFO L85 PathProgramCache]: Analyzing trace with hash -576272665, now seen corresponding path program 17 times [2022-11-02 20:54:24,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:24,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924704936] [2022-11-02 20:54:24,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:24,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:24,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:25,179 INFO 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 20:54:25,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:25,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924704936] [2022-11-02 20:54:25,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924704936] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:25,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:25,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:54:25,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387539235] [2022-11-02 20:54:25,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:25,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:54:25,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:25,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:54:25,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:54:25,183 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-11-02 20:54:25,186 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 209 transitions, 1531 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 20:54:25,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:54:25,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-11-02 20:54:25,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:54:27,034 INFO L130 PetriNetUnfolder]: 416/1618 cut-off events. [2022-11-02 20:54:27,034 INFO L131 PetriNetUnfolder]: For 13259/13259 co-relation queries the response was YES. [2022-11-02 20:54:27,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7266 conditions, 1618 events. 416/1618 cut-off events. For 13259/13259 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 10721 event pairs, 202 based on Foata normal form. 1/1550 useless extension candidates. Maximal degree in co-relation 7149. Up to 437 conditions per place. [2022-11-02 20:54:27,060 INFO L137 encePairwiseOnDemand]: 150/174 looper letters, 150 selfloop transitions, 58 changer transitions 32/325 dead transitions. [2022-11-02 20:54:27,060 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 325 transitions, 3414 flow [2022-11-02 20:54:27,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-02 20:54:27,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-02 20:54:27,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2558 transitions. [2022-11-02 20:54:27,063 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6125478927203065 [2022-11-02 20:54:27,063 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2558 transitions. [2022-11-02 20:54:27,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2558 transitions. [2022-11-02 20:54:27,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:54:27,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2558 transitions. [2022-11-02 20:54:27,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 106.58333333333333) internal successors, (2558), 24 states have internal predecessors, (2558), 0 states have call successors, (0), 0 states 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 20:54:27,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states 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 20:54:27,068 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states 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 20:54:27,069 INFO L175 Difference]: Start difference. First operand has 334 places, 209 transitions, 1531 flow. Second operand 24 states and 2558 transitions. [2022-11-02 20:54:27,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 325 transitions, 3414 flow [2022-11-02 20:54:27,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 325 transitions, 2852 flow, removed 154 selfloop flow, removed 34 redundant places. [2022-11-02 20:54:27,121 INFO L231 Difference]: Finished difference. Result has 315 places, 233 transitions, 1922 flow [2022-11-02 20:54:27,121 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1313, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1922, PETRI_PLACES=315, PETRI_TRANSITIONS=233} [2022-11-02 20:54:27,121 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 158 predicate places. [2022-11-02 20:54:27,121 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 233 transitions, 1922 flow [2022-11-02 20:54:27,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 20:54:27,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:54:27,122 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:54:27,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-11-02 20:54:27,122 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:54:27,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:27,123 INFO L85 PathProgramCache]: Analyzing trace with hash 504791203, now seen corresponding path program 18 times [2022-11-02 20:54:27,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:27,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668454440] [2022-11-02 20:54:27,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:27,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:27,647 INFO 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 20:54:27,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:27,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668454440] [2022-11-02 20:54:27,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668454440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:27,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:27,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:54:27,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566974710] [2022-11-02 20:54:27,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:27,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:54:27,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:27,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:54:27,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:54:27,651 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-11-02 20:54:27,653 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 233 transitions, 1922 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 20:54:27,653 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:54:27,653 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-11-02 20:54:27,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:54:30,142 INFO L130 PetriNetUnfolder]: 434/1661 cut-off events. [2022-11-02 20:54:30,142 INFO L131 PetriNetUnfolder]: For 11914/11930 co-relation queries the response was YES. [2022-11-02 20:54:30,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7376 conditions, 1661 events. 434/1661 cut-off events. For 11914/11930 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 11280 event pairs, 205 based on Foata normal form. 8/1601 useless extension candidates. Maximal degree in co-relation 7270. Up to 437 conditions per place. [2022-11-02 20:54:30,165 INFO L137 encePairwiseOnDemand]: 150/174 looper letters, 191 selfloop transitions, 47 changer transitions 64/387 dead transitions. [2022-11-02 20:54:30,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 387 transitions, 3900 flow [2022-11-02 20:54:30,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-02 20:54:30,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-02 20:54:30,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3506 transitions. [2022-11-02 20:54:30,169 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6105886450714036 [2022-11-02 20:54:30,169 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3506 transitions. [2022-11-02 20:54:30,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3506 transitions. [2022-11-02 20:54:30,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:54:30,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3506 transitions. [2022-11-02 20:54:30,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 106.24242424242425) internal successors, (3506), 33 states have internal predecessors, (3506), 0 states have call successors, (0), 0 states 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 20:54:30,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 174.0) internal successors, (5916), 34 states have internal predecessors, (5916), 0 states have call successors, (0), 0 states 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 20:54:30,176 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 174.0) internal successors, (5916), 34 states have internal predecessors, (5916), 0 states have call successors, (0), 0 states 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 20:54:30,177 INFO L175 Difference]: Start difference. First operand has 315 places, 233 transitions, 1922 flow. Second operand 33 states and 3506 transitions. [2022-11-02 20:54:30,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 387 transitions, 3900 flow [2022-11-02 20:54:30,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 387 transitions, 3215 flow, removed 300 selfloop flow, removed 12 redundant places. [2022-11-02 20:54:30,240 INFO L231 Difference]: Finished difference. Result has 351 places, 232 transitions, 1737 flow [2022-11-02 20:54:30,241 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1580, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1737, PETRI_PLACES=351, PETRI_TRANSITIONS=232} [2022-11-02 20:54:30,242 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 194 predicate places. [2022-11-02 20:54:30,242 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 232 transitions, 1737 flow [2022-11-02 20:54:30,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 20:54:30,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:54:30,243 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:54:30,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-11-02 20:54:30,244 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:54:30,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:30,244 INFO L85 PathProgramCache]: Analyzing trace with hash -603882123, now seen corresponding path program 19 times [2022-11-02 20:54:30,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:30,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653803710] [2022-11-02 20:54:30,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:30,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:30,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:30,712 INFO 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 20:54:30,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:30,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653803710] [2022-11-02 20:54:30,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653803710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:30,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:30,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:54:30,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809694166] [2022-11-02 20:54:30,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:30,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:54:30,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:30,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:54:30,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:54:30,715 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-11-02 20:54:30,716 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 232 transitions, 1737 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 20:54:30,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:54:30,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-11-02 20:54:30,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:54:33,069 INFO L130 PetriNetUnfolder]: 423/1599 cut-off events. [2022-11-02 20:54:33,069 INFO L131 PetriNetUnfolder]: For 11331/11333 co-relation queries the response was YES. [2022-11-02 20:54:33,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7065 conditions, 1599 events. 423/1599 cut-off events. For 11331/11333 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 10552 event pairs, 211 based on Foata normal form. 3/1538 useless extension candidates. Maximal degree in co-relation 6942. Up to 437 conditions per place. [2022-11-02 20:54:33,088 INFO L137 encePairwiseOnDemand]: 150/174 looper letters, 184 selfloop transitions, 47 changer transitions 60/376 dead transitions. [2022-11-02 20:54:33,088 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 376 transitions, 3448 flow [2022-11-02 20:54:33,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-02 20:54:33,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-02 20:54:33,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3397 transitions. [2022-11-02 20:54:33,092 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6100933908045977 [2022-11-02 20:54:33,092 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3397 transitions. [2022-11-02 20:54:33,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3397 transitions. [2022-11-02 20:54:33,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:54:33,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3397 transitions. [2022-11-02 20:54:33,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 106.15625) internal successors, (3397), 32 states have internal predecessors, (3397), 0 states have call successors, (0), 0 states 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 20:54:33,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 174.0) internal successors, (5742), 33 states have internal predecessors, (5742), 0 states have call successors, (0), 0 states 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 20:54:33,099 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 174.0) internal successors, (5742), 33 states have internal predecessors, (5742), 0 states have call successors, (0), 0 states 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 20:54:33,099 INFO L175 Difference]: Start difference. First operand has 351 places, 232 transitions, 1737 flow. Second operand 32 states and 3397 transitions. [2022-11-02 20:54:33,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 376 transitions, 3448 flow [2022-11-02 20:54:33,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 376 transitions, 3082 flow, removed 112 selfloop flow, removed 37 redundant places. [2022-11-02 20:54:33,154 INFO L231 Difference]: Finished difference. Result has 344 places, 231 transitions, 1710 flow [2022-11-02 20:54:33,155 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1560, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1710, PETRI_PLACES=344, PETRI_TRANSITIONS=231} [2022-11-02 20:54:33,155 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 187 predicate places. [2022-11-02 20:54:33,155 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 231 transitions, 1710 flow [2022-11-02 20:54:33,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 20:54:33,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:54:33,156 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:54:33,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-11-02 20:54:33,156 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:54:33,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:33,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1939324031, now seen corresponding path program 20 times [2022-11-02 20:54:33,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:33,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004138263] [2022-11-02 20:54:33,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:33,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:33,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:33,682 INFO 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 20:54:33,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:33,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004138263] [2022-11-02 20:54:33,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004138263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:33,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:33,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:54:33,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941450660] [2022-11-02 20:54:33,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:33,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:54:33,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:33,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:54:33,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:54:33,686 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-11-02 20:54:33,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 231 transitions, 1710 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 20:54:33,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:54:33,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-11-02 20:54:33,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:54:35,767 INFO L130 PetriNetUnfolder]: 438/1639 cut-off events. [2022-11-02 20:54:35,768 INFO L131 PetriNetUnfolder]: For 11434/11438 co-relation queries the response was YES. [2022-11-02 20:54:35,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7293 conditions, 1639 events. 438/1639 cut-off events. For 11434/11438 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 11011 event pairs, 216 based on Foata normal form. 3/1575 useless extension candidates. Maximal degree in co-relation 7177. Up to 437 conditions per place. [2022-11-02 20:54:35,793 INFO L137 encePairwiseOnDemand]: 150/174 looper letters, 162 selfloop transitions, 59 changer transitions 48/354 dead transitions. [2022-11-02 20:54:35,793 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 354 transitions, 3336 flow [2022-11-02 20:54:35,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-02 20:54:35,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-02 20:54:35,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3171 transitions. [2022-11-02 20:54:35,796 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6074712643678161 [2022-11-02 20:54:35,796 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3171 transitions. [2022-11-02 20:54:35,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3171 transitions. [2022-11-02 20:54:35,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:54:35,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3171 transitions. [2022-11-02 20:54:35,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 105.7) internal successors, (3171), 30 states have internal predecessors, (3171), 0 states have call successors, (0), 0 states 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 20:54:35,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states 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 20:54:35,803 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states 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 20:54:35,803 INFO L175 Difference]: Start difference. First operand has 344 places, 231 transitions, 1710 flow. Second operand 30 states and 3171 transitions. [2022-11-02 20:54:35,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 354 transitions, 3336 flow [2022-11-02 20:54:35,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 354 transitions, 3025 flow, removed 73 selfloop flow, removed 31 redundant places. [2022-11-02 20:54:35,862 INFO L231 Difference]: Finished difference. Result has 339 places, 242 transitions, 1892 flow [2022-11-02 20:54:35,862 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1556, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1892, PETRI_PLACES=339, PETRI_TRANSITIONS=242} [2022-11-02 20:54:35,862 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 182 predicate places. [2022-11-02 20:54:35,863 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 242 transitions, 1892 flow [2022-11-02 20:54:35,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 20:54:35,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:54:35,863 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:54:35,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-11-02 20:54:35,864 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:54:35,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:35,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1978702967, now seen corresponding path program 21 times [2022-11-02 20:54:35,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:35,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194625498] [2022-11-02 20:54:35,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:35,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:36,334 INFO 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 20:54:36,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:36,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194625498] [2022-11-02 20:54:36,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194625498] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:36,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:36,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:54:36,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039674315] [2022-11-02 20:54:36,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:36,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:54:36,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:36,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:54:36,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:54:36,337 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-11-02 20:54:36,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 242 transitions, 1892 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 20:54:36,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:54:36,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-11-02 20:54:36,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:54:38,366 INFO L130 PetriNetUnfolder]: 409/1583 cut-off events. [2022-11-02 20:54:38,366 INFO L131 PetriNetUnfolder]: For 10573/10574 co-relation queries the response was YES. [2022-11-02 20:54:38,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6847 conditions, 1583 events. 409/1583 cut-off events. For 10573/10574 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 10468 event pairs, 197 based on Foata normal form. 1/1522 useless extension candidates. Maximal degree in co-relation 6735. Up to 437 conditions per place. [2022-11-02 20:54:38,389 INFO L137 encePairwiseOnDemand]: 150/174 looper letters, 177 selfloop transitions, 47 changer transitions 54/363 dead transitions. [2022-11-02 20:54:38,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 363 transitions, 3279 flow [2022-11-02 20:54:38,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-02 20:54:38,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-02 20:54:38,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3285 transitions. [2022-11-02 20:54:38,392 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6090100111234705 [2022-11-02 20:54:38,392 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3285 transitions. [2022-11-02 20:54:38,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3285 transitions. [2022-11-02 20:54:38,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:54:38,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3285 transitions. [2022-11-02 20:54:38,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 105.96774193548387) internal successors, (3285), 31 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states 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 20:54:38,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states 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 20:54:38,399 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states 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 20:54:38,399 INFO L175 Difference]: Start difference. First operand has 339 places, 242 transitions, 1892 flow. Second operand 31 states and 3285 transitions. [2022-11-02 20:54:38,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 363 transitions, 3279 flow [2022-11-02 20:54:38,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 363 transitions, 3059 flow, removed 66 selfloop flow, removed 24 redundant places. [2022-11-02 20:54:38,453 INFO L231 Difference]: Finished difference. Result has 348 places, 232 transitions, 1765 flow [2022-11-02 20:54:38,454 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1770, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1765, PETRI_PLACES=348, PETRI_TRANSITIONS=232} [2022-11-02 20:54:38,454 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 191 predicate places. [2022-11-02 20:54:38,454 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 232 transitions, 1765 flow [2022-11-02 20:54:38,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 20:54:38,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:54:38,455 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:54:38,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-11-02 20:54:38,455 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:54:38,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:38,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1933630887, now seen corresponding path program 22 times [2022-11-02 20:54:38,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:38,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136581099] [2022-11-02 20:54:38,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:38,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:38,884 INFO 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 20:54:38,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:38,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136581099] [2022-11-02 20:54:38,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136581099] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:38,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:38,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:54:38,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477830468] [2022-11-02 20:54:38,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:38,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:54:38,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:38,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:54:38,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:54:38,888 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-11-02 20:54:38,888 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 232 transitions, 1765 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 20:54:38,888 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:54:38,889 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-11-02 20:54:38,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand