./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/bin/uautomizer-verify-4GaUIPS5ZU --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 613bf9314e4e3fb6e64527ec38c7e6b39400e524de37a5103e9f06d9db406d3d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:01:15,541 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:01:15,648 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-31 22:01:15,656 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:01:15,656 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:01:15,696 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:01:15,697 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:01:15,697 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:01:15,698 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:01:15,700 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:01:15,701 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:01:15,701 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:01:15,702 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:01:15,703 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:01:15,703 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:01:15,705 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:01:15,706 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:01:15,706 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:01:15,707 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:01:15,707 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:01:15,711 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-31 22:01:15,712 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-31 22:01:15,712 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-31 22:01:15,713 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:01:15,713 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 22:01:15,713 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:01:15,714 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:01:15,714 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:01:15,714 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:01:15,728 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:01:15,728 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:01:15,729 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:01:15,729 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:01:15,729 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:01:15,730 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:01:15,730 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:01:15,731 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:01:15,731 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:01:15,732 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:01:15,732 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:01:15,733 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:01:15,733 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:01:15,734 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 613bf9314e4e3fb6e64527ec38c7e6b39400e524de37a5103e9f06d9db406d3d [2024-10-31 22:01:16,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:01:16,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:01:16,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:01:16,110 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:01:16,111 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:01:16,113 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c Unable to find full path for "g++" [2024-10-31 22:01:18,200 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:01:18,387 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:01:18,388 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2024-10-31 22:01:18,400 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/bin/uautomizer-verify-4GaUIPS5ZU/data/738e02f68/84d13a659abd44c48681fdaece2d6fec/FLAG574413a1a [2024-10-31 22:01:18,423 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/bin/uautomizer-verify-4GaUIPS5ZU/data/738e02f68/84d13a659abd44c48681fdaece2d6fec [2024-10-31 22:01:18,426 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:01:18,427 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:01:18,432 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:01:18,432 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:01:18,438 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:01:18,439 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:01:18" (1/1) ... [2024-10-31 22:01:18,440 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21a2a294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:18, skipping insertion in model container [2024-10-31 22:01:18,440 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:01:18" (1/1) ... [2024-10-31 22:01:18,474 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:01:18,721 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:01:18,726 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:01:18,749 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:01:18,798 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:01:18,830 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:01:18,830 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:18 WrapperNode [2024-10-31 22:01:18,831 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:01:18,832 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:01:18,833 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:01:18,833 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:01:18,843 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:18" (1/1) ... [2024-10-31 22:01:18,856 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:18" (1/1) ... [2024-10-31 22:01:18,910 INFO L138 Inliner]: procedures = 24, calls = 30, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 161 [2024-10-31 22:01:18,914 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:01:18,915 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:01:18,915 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:01:18,916 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:01:18,928 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:18" (1/1) ... [2024-10-31 22:01:18,929 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:18" (1/1) ... [2024-10-31 22:01:18,932 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:18" (1/1) ... [2024-10-31 22:01:18,960 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-31 22:01:18,960 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:18" (1/1) ... [2024-10-31 22:01:18,961 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:18" (1/1) ... [2024-10-31 22:01:18,974 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:18" (1/1) ... [2024-10-31 22:01:18,982 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:18" (1/1) ... [2024-10-31 22:01:18,983 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:18" (1/1) ... [2024-10-31 22:01:18,989 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:18" (1/1) ... [2024-10-31 22:01:18,991 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:01:18,996 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:01:18,996 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:01:18,996 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:01:18,997 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:18" (1/1) ... [2024-10-31 22:01:19,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:01:19,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:19,048 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:01:19,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:01:19,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:01:19,093 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-31 22:01:19,094 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-31 22:01:19,095 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-31 22:01:19,095 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-31 22:01:19,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:01:19,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:01:19,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:01:19,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:01:19,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:01:19,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:01:19,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-31 22:01:19,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:01:19,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:01:19,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:01:19,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:01:19,101 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:01:19,256 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:01:19,257 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:01:19,689 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:01:19,689 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:01:20,106 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:01:20,107 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-31 22:01:20,107 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:01:20 BoogieIcfgContainer [2024-10-31 22:01:20,108 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:01:20,111 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:01:20,111 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:01:20,118 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:01:20,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:01:18" (1/3) ... [2024-10-31 22:01:20,119 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@109d07e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:01:20, skipping insertion in model container [2024-10-31 22:01:20,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:18" (2/3) ... [2024-10-31 22:01:20,120 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@109d07e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:01:20, skipping insertion in model container [2024-10-31 22:01:20,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:01:20" (3/3) ... [2024-10-31 22:01:20,125 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-2-nl.wvr.c [2024-10-31 22:01:20,145 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:01:20,146 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-10-31 22:01:20,146 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:01:20,217 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-31 22:01:20,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 40 transitions, 94 flow [2024-10-31 22:01:20,316 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2024-10-31 22:01:20,317 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:01:20,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 38 events. 4/38 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 76 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2024-10-31 22:01:20,324 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 40 transitions, 94 flow [2024-10-31 22:01:20,328 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 37 transitions, 86 flow [2024-10-31 22:01:20,347 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:01:20,356 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@56f82812, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:01:20,357 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-10-31 22:01:20,367 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:01:20,369 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-31 22:01:20,369 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:01:20,370 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:20,370 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-31 22:01:20,371 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-31 22:01:20,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:20,379 INFO L85 PathProgramCache]: Analyzing trace with hash 515660, now seen corresponding path program 1 times [2024-10-31 22:01:20,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:20,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460997199] [2024-10-31 22:01:20,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:20,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:20,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:20,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:20,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460997199] [2024-10-31 22:01:20,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460997199] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:20,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:20,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:01:20,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617250198] [2024-10-31 22:01:20,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:20,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:01:20,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:20,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:01:20,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:01:20,819 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-31 22:01:20,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:20,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:20,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-31 22:01:20,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:21,079 INFO L124 PetriNetUnfolderBase]: 238/440 cut-off events. [2024-10-31 22:01:21,080 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-10-31 22:01:21,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 864 conditions, 440 events. 238/440 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2029 event pairs, 201 based on Foata normal form. 22/325 useless extension candidates. Maximal degree in co-relation 808. Up to 388 conditions per place. [2024-10-31 22:01:21,088 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 25 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2024-10-31 22:01:21,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 33 transitions, 132 flow [2024-10-31 22:01:21,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:01:21,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:01:21,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2024-10-31 22:01:21,103 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-10-31 22:01:21,105 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 86 flow. Second operand 3 states and 57 transitions. [2024-10-31 22:01:21,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 33 transitions, 132 flow [2024-10-31 22:01:21,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 124 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-31 22:01:21,112 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 74 flow [2024-10-31 22:01:21,114 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2024-10-31 22:01:21,120 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -5 predicate places. [2024-10-31 22:01:21,121 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 74 flow [2024-10-31 22:01:21,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:21,122 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:21,122 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-31 22:01:21,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:01:21,124 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-31 22:01:21,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:21,125 INFO L85 PathProgramCache]: Analyzing trace with hash 515661, now seen corresponding path program 1 times [2024-10-31 22:01:21,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:21,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457969747] [2024-10-31 22:01:21,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:21,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:21,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:21,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:21,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457969747] [2024-10-31 22:01:21,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457969747] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:21,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:21,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:01:21,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137800742] [2024-10-31 22:01:21,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:21,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:01:21,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:21,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:01:21,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:01:21,630 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-31 22:01:21,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:21,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:21,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-31 22:01:21,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:21,905 INFO L124 PetriNetUnfolderBase]: 239/443 cut-off events. [2024-10-31 22:01:21,905 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:01:21,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 854 conditions, 443 events. 239/443 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2027 event pairs, 201 based on Foata normal form. 0/306 useless extension candidates. Maximal degree in co-relation 832. Up to 393 conditions per place. [2024-10-31 22:01:21,913 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 27 selfloop transitions, 4 changer transitions 0/36 dead transitions. [2024-10-31 22:01:21,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 36 transitions, 144 flow [2024-10-31 22:01:21,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:01:21,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:01:21,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-10-31 22:01:21,915 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-10-31 22:01:21,916 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 74 flow. Second operand 4 states and 68 transitions. [2024-10-31 22:01:21,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 36 transitions, 144 flow [2024-10-31 22:01:21,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 36 transitions, 138 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:01:21,919 INFO L231 Difference]: Finished difference. Result has 38 places, 36 transitions, 97 flow [2024-10-31 22:01:21,919 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=38, PETRI_TRANSITIONS=36} [2024-10-31 22:01:21,920 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2024-10-31 22:01:21,920 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 36 transitions, 97 flow [2024-10-31 22:01:21,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:21,921 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:21,922 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-31 22:01:21,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:01:21,924 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-31 22:01:21,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:21,925 INFO L85 PathProgramCache]: Analyzing trace with hash 495566162, now seen corresponding path program 1 times [2024-10-31 22:01:21,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:21,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020438080] [2024-10-31 22:01:21,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:21,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:21,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:22,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:22,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:22,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020438080] [2024-10-31 22:01:22,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020438080] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:01:22,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917005209] [2024-10-31 22:01:22,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:22,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:22,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:22,339 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:01:22,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:01:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:22,444 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-31 22:01:22,451 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:01:22,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-10-31 22:01:22,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:22,774 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:01:22,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:22,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917005209] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:01:22,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:01:22,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-10-31 22:01:22,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961986567] [2024-10-31 22:01:22,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:01:22,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-31 22:01:22,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:22,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-31 22:01:22,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:01:23,034 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-31 22:01:23,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 97 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:23,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:23,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-31 22:01:23,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:23,499 INFO L124 PetriNetUnfolderBase]: 240/445 cut-off events. [2024-10-31 22:01:23,499 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:01:23,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 870 conditions, 445 events. 240/445 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2047 event pairs, 201 based on Foata normal form. 0/307 useless extension candidates. Maximal degree in co-relation 839. Up to 390 conditions per place. [2024-10-31 22:01:23,505 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 23 selfloop transitions, 10 changer transitions 0/38 dead transitions. [2024-10-31 22:01:23,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 38 transitions, 171 flow [2024-10-31 22:01:23,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:01:23,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:01:23,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-10-31 22:01:23,508 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-10-31 22:01:23,508 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 97 flow. Second operand 8 states and 107 transitions. [2024-10-31 22:01:23,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 38 transitions, 171 flow [2024-10-31 22:01:23,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 38 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:01:23,510 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 122 flow [2024-10-31 22:01:23,510 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=122, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2024-10-31 22:01:23,511 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2024-10-31 22:01:23,511 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 122 flow [2024-10-31 22:01:23,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:23,512 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:23,512 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-31 22:01:23,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:01:23,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:23,718 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-31 22:01:23,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:23,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1815149000, now seen corresponding path program 1 times [2024-10-31 22:01:23,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:23,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562965656] [2024-10-31 22:01:23,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:23,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:23,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:23,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:23,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:23,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562965656] [2024-10-31 22:01:23,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562965656] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:23,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:23,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:01:23,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355890852] [2024-10-31 22:01:23,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:23,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:01:23,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:23,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:01:23,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:01:23,838 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-31 22:01:23,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:23,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:23,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-31 22:01:23,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:23,938 INFO L124 PetriNetUnfolderBase]: 169/320 cut-off events. [2024-10-31 22:01:23,939 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:01:23,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 635 conditions, 320 events. 169/320 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1276 event pairs, 136 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 597. Up to 273 conditions per place. [2024-10-31 22:01:23,943 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 26 selfloop transitions, 4 changer transitions 0/35 dead transitions. [2024-10-31 22:01:23,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 35 transitions, 176 flow [2024-10-31 22:01:23,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:01:23,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:01:23,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2024-10-31 22:01:23,946 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-10-31 22:01:23,946 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 122 flow. Second operand 4 states and 63 transitions. [2024-10-31 22:01:23,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 35 transitions, 176 flow [2024-10-31 22:01:23,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 35 transitions, 134 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-10-31 22:01:23,950 INFO L231 Difference]: Finished difference. Result has 36 places, 35 transitions, 82 flow [2024-10-31 22:01:23,951 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=36, PETRI_TRANSITIONS=35} [2024-10-31 22:01:23,952 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -4 predicate places. [2024-10-31 22:01:23,953 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 35 transitions, 82 flow [2024-10-31 22:01:23,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:23,954 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:23,954 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-31 22:01:23,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:01:23,955 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-31 22:01:23,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:23,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1815148999, now seen corresponding path program 1 times [2024-10-31 22:01:23,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:23,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903659435] [2024-10-31 22:01:23,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:23,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:24,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:24,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:24,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903659435] [2024-10-31 22:01:24,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903659435] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:24,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:24,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:01:24,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423207324] [2024-10-31 22:01:24,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:24,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:01:24,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:24,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:01:24,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:01:24,034 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-10-31 22:01:24,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 82 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:24,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:24,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-10-31 22:01:24,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:24,169 INFO L124 PetriNetUnfolderBase]: 181/356 cut-off events. [2024-10-31 22:01:24,169 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:01:24,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 687 conditions, 356 events. 181/356 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1445 event pairs, 149 based on Foata normal form. 14/309 useless extension candidates. Maximal degree in co-relation 589. Up to 278 conditions per place. [2024-10-31 22:01:24,172 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 27 selfloop transitions, 2 changer transitions 8/42 dead transitions. [2024-10-31 22:01:24,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 42 transitions, 172 flow [2024-10-31 22:01:24,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:01:24,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:01:24,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 80 transitions. [2024-10-31 22:01:24,174 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-31 22:01:24,174 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 82 flow. Second operand 4 states and 80 transitions. [2024-10-31 22:01:24,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 42 transitions, 172 flow [2024-10-31 22:01:24,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 42 transitions, 167 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:01:24,176 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 90 flow [2024-10-31 22:01:24,176 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2024-10-31 22:01:24,177 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2024-10-31 22:01:24,177 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 90 flow [2024-10-31 22:01:24,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:24,178 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:24,178 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:24,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:01:24,178 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-31 22:01:24,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:24,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1611599124, now seen corresponding path program 1 times [2024-10-31 22:01:24,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:24,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649822359] [2024-10-31 22:01:24,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:24,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:24,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:24,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:24,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:24,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649822359] [2024-10-31 22:01:24,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649822359] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:01:24,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888486350] [2024-10-31 22:01:24,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:24,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:24,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:24,375 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:01:24,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:01:24,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:24,455 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-31 22:01:24,457 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:01:24,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:24,548 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:01:24,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888486350] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:24,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:01:24,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2024-10-31 22:01:24,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925238611] [2024-10-31 22:01:24,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:24,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:01:24,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:24,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:01:24,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:01:24,561 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-10-31 22:01:24,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:24,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:24,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-10-31 22:01:24,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:24,643 INFO L124 PetriNetUnfolderBase]: 109/214 cut-off events. [2024-10-31 22:01:24,643 INFO L125 PetriNetUnfolderBase]: For 33/36 co-relation queries the response was YES. [2024-10-31 22:01:24,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 449 conditions, 214 events. 109/214 cut-off events. For 33/36 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 685 event pairs, 83 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 437. Up to 176 conditions per place. [2024-10-31 22:01:24,645 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 23 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2024-10-31 22:01:24,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 31 transitions, 130 flow [2024-10-31 22:01:24,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:01:24,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:01:24,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2024-10-31 22:01:24,647 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-10-31 22:01:24,647 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 90 flow. Second operand 4 states and 64 transitions. [2024-10-31 22:01:24,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 31 transitions, 130 flow [2024-10-31 22:01:24,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 31 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:01:24,648 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 80 flow [2024-10-31 22:01:24,648 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=80, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2024-10-31 22:01:24,649 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -5 predicate places. [2024-10-31 22:01:24,649 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 80 flow [2024-10-31 22:01:24,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:24,650 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:24,650 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:24,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-31 22:01:24,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:24,854 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-31 22:01:24,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:24,855 INFO L85 PathProgramCache]: Analyzing trace with hash -719122717, now seen corresponding path program 1 times [2024-10-31 22:01:24,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:24,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896028153] [2024-10-31 22:01:24,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:24,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:24,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:24,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:01:24,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:24,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896028153] [2024-10-31 22:01:24,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896028153] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:24,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:24,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:01:24,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734096440] [2024-10-31 22:01:24,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:24,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:01:24,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:24,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:01:24,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:01:24,964 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-10-31 22:01:24,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:24,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:24,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-10-31 22:01:24,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:25,058 INFO L124 PetriNetUnfolderBase]: 117/232 cut-off events. [2024-10-31 22:01:25,058 INFO L125 PetriNetUnfolderBase]: For 40/43 co-relation queries the response was YES. [2024-10-31 22:01:25,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 232 events. 117/232 cut-off events. For 40/43 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 714 event pairs, 34 based on Foata normal form. 3/223 useless extension candidates. Maximal degree in co-relation 468. Up to 159 conditions per place. [2024-10-31 22:01:25,061 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 30 selfloop transitions, 3 changer transitions 0/38 dead transitions. [2024-10-31 22:01:25,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 38 transitions, 165 flow [2024-10-31 22:01:25,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:01:25,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:01:25,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-10-31 22:01:25,063 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2024-10-31 22:01:25,063 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 80 flow. Second operand 3 states and 59 transitions. [2024-10-31 22:01:25,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 38 transitions, 165 flow [2024-10-31 22:01:25,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 38 transitions, 161 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:01:25,066 INFO L231 Difference]: Finished difference. Result has 36 places, 33 transitions, 99 flow [2024-10-31 22:01:25,067 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=36, PETRI_TRANSITIONS=33} [2024-10-31 22:01:25,068 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -4 predicate places. [2024-10-31 22:01:25,069 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 33 transitions, 99 flow [2024-10-31 22:01:25,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:25,069 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:25,070 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:25,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:01:25,070 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-31 22:01:25,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:25,071 INFO L85 PathProgramCache]: Analyzing trace with hash 220299981, now seen corresponding path program 2 times [2024-10-31 22:01:25,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:25,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129372323] [2024-10-31 22:01:25,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:25,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:25,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:01:25,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:25,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129372323] [2024-10-31 22:01:25,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129372323] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:25,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:25,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-31 22:01:25,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753470235] [2024-10-31 22:01:25,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:25,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:01:25,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:25,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:01:25,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:01:25,769 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-31 22:01:25,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 99 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:25,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:25,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-31 22:01:25,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:26,077 INFO L124 PetriNetUnfolderBase]: 172/339 cut-off events. [2024-10-31 22:01:26,077 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2024-10-31 22:01:26,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 806 conditions, 339 events. 172/339 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1271 event pairs, 10 based on Foata normal form. 1/338 useless extension candidates. Maximal degree in co-relation 778. Up to 199 conditions per place. [2024-10-31 22:01:26,080 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 46 selfloop transitions, 14 changer transitions 5/69 dead transitions. [2024-10-31 22:01:26,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 69 transitions, 333 flow [2024-10-31 22:01:26,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:01:26,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-31 22:01:26,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 151 transitions. [2024-10-31 22:01:26,082 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3775 [2024-10-31 22:01:26,082 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 99 flow. Second operand 10 states and 151 transitions. [2024-10-31 22:01:26,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 69 transitions, 333 flow [2024-10-31 22:01:26,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 69 transitions, 307 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-10-31 22:01:26,086 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 162 flow [2024-10-31 22:01:26,086 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=162, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2024-10-31 22:01:26,087 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 7 predicate places. [2024-10-31 22:01:26,087 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 162 flow [2024-10-31 22:01:26,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:26,088 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:26,088 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:26,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:01:26,088 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-31 22:01:26,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:26,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1499283237, now seen corresponding path program 3 times [2024-10-31 22:01:26,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:26,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857681046] [2024-10-31 22:01:26,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:26,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:26,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:26,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:01:26,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:26,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857681046] [2024-10-31 22:01:26,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857681046] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:26,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:26,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-31 22:01:26,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035377651] [2024-10-31 22:01:26,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:26,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:01:26,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:26,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:01:26,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:01:26,730 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-31 22:01:26,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 162 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:26,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:26,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-31 22:01:26,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:27,034 INFO L124 PetriNetUnfolderBase]: 194/393 cut-off events. [2024-10-31 22:01:27,034 INFO L125 PetriNetUnfolderBase]: For 199/199 co-relation queries the response was YES. [2024-10-31 22:01:27,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1071 conditions, 393 events. 194/393 cut-off events. For 199/199 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1618 event pairs, 24 based on Foata normal form. 1/393 useless extension candidates. Maximal degree in co-relation 1059. Up to 226 conditions per place. [2024-10-31 22:01:27,039 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 48 selfloop transitions, 21 changer transitions 5/78 dead transitions. [2024-10-31 22:01:27,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 78 transitions, 448 flow [2024-10-31 22:01:27,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:01:27,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-31 22:01:27,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-10-31 22:01:27,042 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.385 [2024-10-31 22:01:27,042 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 162 flow. Second operand 10 states and 154 transitions. [2024-10-31 22:01:27,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 78 transitions, 448 flow [2024-10-31 22:01:27,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 78 transitions, 437 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-31 22:01:27,047 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 285 flow [2024-10-31 22:01:27,048 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=285, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2024-10-31 22:01:27,048 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 18 predicate places. [2024-10-31 22:01:27,049 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 285 flow [2024-10-31 22:01:27,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:27,049 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:27,050 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:27,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:01:27,050 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-31 22:01:27,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:27,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1747105657, now seen corresponding path program 4 times [2024-10-31 22:01:27,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:27,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032373527] [2024-10-31 22:01:27,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:27,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:27,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:01:27,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:27,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032373527] [2024-10-31 22:01:27,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032373527] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:27,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:27,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-31 22:01:27,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164051336] [2024-10-31 22:01:27,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:27,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:01:27,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:27,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:01:27,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:01:27,796 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-31 22:01:27,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 285 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:27,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:27,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-31 22:01:27,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:28,192 INFO L124 PetriNetUnfolderBase]: 206/433 cut-off events. [2024-10-31 22:01:28,192 INFO L125 PetriNetUnfolderBase]: For 495/495 co-relation queries the response was YES. [2024-10-31 22:01:28,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1375 conditions, 433 events. 206/433 cut-off events. For 495/495 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1946 event pairs, 9 based on Foata normal form. 1/434 useless extension candidates. Maximal degree in co-relation 1357. Up to 213 conditions per place. [2024-10-31 22:01:28,197 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 52 selfloop transitions, 27 changer transitions 5/88 dead transitions. [2024-10-31 22:01:28,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 88 transitions, 590 flow [2024-10-31 22:01:28,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-31 22:01:28,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-31 22:01:28,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-10-31 22:01:28,200 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3795454545454545 [2024-10-31 22:01:28,200 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 285 flow. Second operand 11 states and 167 transitions. [2024-10-31 22:01:28,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 88 transitions, 590 flow [2024-10-31 22:01:28,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 88 transitions, 566 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-10-31 22:01:28,207 INFO L231 Difference]: Finished difference. Result has 67 places, 58 transitions, 361 flow [2024-10-31 22:01:28,207 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=361, PETRI_PLACES=67, PETRI_TRANSITIONS=58} [2024-10-31 22:01:28,208 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 27 predicate places. [2024-10-31 22:01:28,208 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 58 transitions, 361 flow [2024-10-31 22:01:28,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:28,208 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:28,209 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:28,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-31 22:01:28,209 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-31 22:01:28,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:28,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1155481859, now seen corresponding path program 5 times [2024-10-31 22:01:28,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:28,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066694720] [2024-10-31 22:01:28,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:28,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:28,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:01:28,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:28,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066694720] [2024-10-31 22:01:28,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066694720] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:28,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:28,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-31 22:01:28,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016541111] [2024-10-31 22:01:28,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:28,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:01:28,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:28,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:01:28,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:01:28,804 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-31 22:01:28,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 361 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:28,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:28,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-31 22:01:28,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:29,134 INFO L124 PetriNetUnfolderBase]: 205/440 cut-off events. [2024-10-31 22:01:29,135 INFO L125 PetriNetUnfolderBase]: For 952/952 co-relation queries the response was YES. [2024-10-31 22:01:29,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1518 conditions, 440 events. 205/440 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2013 event pairs, 32 based on Foata normal form. 1/441 useless extension candidates. Maximal degree in co-relation 1498. Up to 263 conditions per place. [2024-10-31 22:01:29,140 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 53 selfloop transitions, 23 changer transitions 5/85 dead transitions. [2024-10-31 22:01:29,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 85 transitions, 655 flow [2024-10-31 22:01:29,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:01:29,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-31 22:01:29,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-10-31 22:01:29,142 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3825 [2024-10-31 22:01:29,142 INFO L175 Difference]: Start difference. First operand has 67 places, 58 transitions, 361 flow. Second operand 10 states and 153 transitions. [2024-10-31 22:01:29,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 85 transitions, 655 flow [2024-10-31 22:01:29,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 85 transitions, 592 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-10-31 22:01:29,152 INFO L231 Difference]: Finished difference. Result has 72 places, 61 transitions, 402 flow [2024-10-31 22:01:29,152 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=402, PETRI_PLACES=72, PETRI_TRANSITIONS=61} [2024-10-31 22:01:29,153 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 32 predicate places. [2024-10-31 22:01:29,153 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 61 transitions, 402 flow [2024-10-31 22:01:29,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:29,153 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:29,154 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:29,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-31 22:01:29,154 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-31 22:01:29,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:29,155 INFO L85 PathProgramCache]: Analyzing trace with hash 528006183, now seen corresponding path program 6 times [2024-10-31 22:01:29,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:29,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829602648] [2024-10-31 22:01:29,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:29,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:29,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:29,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:01:29,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:29,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829602648] [2024-10-31 22:01:29,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829602648] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:29,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:29,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-31 22:01:29,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967231284] [2024-10-31 22:01:29,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:29,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:01:29,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:29,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:01:29,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:01:29,821 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-31 22:01:29,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 61 transitions, 402 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:29,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:29,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-31 22:01:29,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:30,165 INFO L124 PetriNetUnfolderBase]: 217/474 cut-off events. [2024-10-31 22:01:30,166 INFO L125 PetriNetUnfolderBase]: For 970/970 co-relation queries the response was YES. [2024-10-31 22:01:30,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1654 conditions, 474 events. 217/474 cut-off events. For 970/970 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2265 event pairs, 21 based on Foata normal form. 1/475 useless extension candidates. Maximal degree in co-relation 1627. Up to 282 conditions per place. [2024-10-31 22:01:30,172 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 58 selfloop transitions, 24 changer transitions 5/91 dead transitions. [2024-10-31 22:01:30,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 91 transitions, 701 flow [2024-10-31 22:01:30,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:01:30,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-31 22:01:30,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-10-31 22:01:30,174 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-10-31 22:01:30,174 INFO L175 Difference]: Start difference. First operand has 72 places, 61 transitions, 402 flow. Second operand 10 states and 155 transitions. [2024-10-31 22:01:30,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 91 transitions, 701 flow [2024-10-31 22:01:30,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 91 transitions, 657 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-10-31 22:01:30,182 INFO L231 Difference]: Finished difference. Result has 78 places, 64 transitions, 447 flow [2024-10-31 22:01:30,183 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=447, PETRI_PLACES=78, PETRI_TRANSITIONS=64} [2024-10-31 22:01:30,185 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 38 predicate places. [2024-10-31 22:01:30,186 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 64 transitions, 447 flow [2024-10-31 22:01:30,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:30,186 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:30,186 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:30,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-31 22:01:30,187 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-31 22:01:30,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:30,187 INFO L85 PathProgramCache]: Analyzing trace with hash -829425351, now seen corresponding path program 7 times [2024-10-31 22:01:30,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:30,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939985659] [2024-10-31 22:01:30,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:30,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:30,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:30,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:01:30,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:30,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939985659] [2024-10-31 22:01:30,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939985659] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:30,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:30,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-31 22:01:30,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303286238] [2024-10-31 22:01:30,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:30,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:01:30,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:30,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:01:30,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:01:30,745 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-31 22:01:30,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 64 transitions, 447 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:30,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:30,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-31 22:01:30,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:31,035 INFO L124 PetriNetUnfolderBase]: 213/461 cut-off events. [2024-10-31 22:01:31,038 INFO L125 PetriNetUnfolderBase]: For 1505/1513 co-relation queries the response was YES. [2024-10-31 22:01:31,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1729 conditions, 461 events. 213/461 cut-off events. For 1505/1513 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2167 event pairs, 22 based on Foata normal form. 9/470 useless extension candidates. Maximal degree in co-relation 1705. Up to 286 conditions per place. [2024-10-31 22:01:31,043 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 52 selfloop transitions, 23 changer transitions 8/87 dead transitions. [2024-10-31 22:01:31,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 87 transitions, 716 flow [2024-10-31 22:01:31,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:01:31,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-31 22:01:31,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 150 transitions. [2024-10-31 22:01:31,045 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-10-31 22:01:31,046 INFO L175 Difference]: Start difference. First operand has 78 places, 64 transitions, 447 flow. Second operand 10 states and 150 transitions. [2024-10-31 22:01:31,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 87 transitions, 716 flow [2024-10-31 22:01:31,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 87 transitions, 657 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-10-31 22:01:31,054 INFO L231 Difference]: Finished difference. Result has 81 places, 64 transitions, 443 flow [2024-10-31 22:01:31,055 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=443, PETRI_PLACES=81, PETRI_TRANSITIONS=64} [2024-10-31 22:01:31,056 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 41 predicate places. [2024-10-31 22:01:31,056 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 64 transitions, 443 flow [2024-10-31 22:01:31,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:31,058 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:31,058 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:31,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-31 22:01:31,058 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-31 22:01:31,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:31,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1985813381, now seen corresponding path program 8 times [2024-10-31 22:01:31,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:31,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289822772] [2024-10-31 22:01:31,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:31,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:31,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:31,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:01:31,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:31,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289822772] [2024-10-31 22:01:31,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289822772] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:31,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:31,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-31 22:01:31,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594394247] [2024-10-31 22:01:31,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:31,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:01:31,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:31,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:01:31,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:01:31,689 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-31 22:01:31,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 64 transitions, 443 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:31,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:31,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-31 22:01:31,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:31,988 INFO L124 PetriNetUnfolderBase]: 222/486 cut-off events. [2024-10-31 22:01:31,989 INFO L125 PetriNetUnfolderBase]: For 1660/1672 co-relation queries the response was YES. [2024-10-31 22:01:31,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1825 conditions, 486 events. 222/486 cut-off events. For 1660/1672 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2317 event pairs, 42 based on Foata normal form. 3/489 useless extension candidates. Maximal degree in co-relation 1796. Up to 292 conditions per place. [2024-10-31 22:01:31,994 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 61 selfloop transitions, 24 changer transitions 5/94 dead transitions. [2024-10-31 22:01:31,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 94 transitions, 791 flow [2024-10-31 22:01:31,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:01:31,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-31 22:01:31,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-10-31 22:01:31,997 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3925 [2024-10-31 22:01:31,997 INFO L175 Difference]: Start difference. First operand has 81 places, 64 transitions, 443 flow. Second operand 10 states and 157 transitions. [2024-10-31 22:01:31,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 94 transitions, 791 flow [2024-10-31 22:01:32,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 94 transitions, 735 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-10-31 22:01:32,007 INFO L231 Difference]: Finished difference. Result has 83 places, 67 transitions, 486 flow [2024-10-31 22:01:32,008 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=486, PETRI_PLACES=83, PETRI_TRANSITIONS=67} [2024-10-31 22:01:32,009 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 43 predicate places. [2024-10-31 22:01:32,009 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 67 transitions, 486 flow [2024-10-31 22:01:32,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:32,010 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:32,010 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:32,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-31 22:01:32,010 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-31 22:01:32,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:32,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1146305349, now seen corresponding path program 9 times [2024-10-31 22:01:32,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:32,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585577972] [2024-10-31 22:01:32,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:32,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:32,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:32,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:01:32,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:32,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585577972] [2024-10-31 22:01:32,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585577972] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:32,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:32,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-31 22:01:32,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930460060] [2024-10-31 22:01:32,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:32,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:01:32,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:32,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:01:32,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:01:32,482 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-31 22:01:32,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 67 transitions, 486 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:32,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:32,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-31 22:01:32,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:32,802 INFO L124 PetriNetUnfolderBase]: 218/475 cut-off events. [2024-10-31 22:01:32,803 INFO L125 PetriNetUnfolderBase]: For 2271/2291 co-relation queries the response was YES. [2024-10-31 22:01:32,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1893 conditions, 475 events. 218/475 cut-off events. For 2271/2291 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2273 event pairs, 33 based on Foata normal form. 11/486 useless extension candidates. Maximal degree in co-relation 1866. Up to 296 conditions per place. [2024-10-31 22:01:32,808 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 55 selfloop transitions, 23 changer transitions 8/90 dead transitions. [2024-10-31 22:01:32,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 90 transitions, 796 flow [2024-10-31 22:01:32,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:01:32,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-31 22:01:32,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-10-31 22:01:32,810 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38 [2024-10-31 22:01:32,811 INFO L175 Difference]: Start difference. First operand has 83 places, 67 transitions, 486 flow. Second operand 10 states and 152 transitions. [2024-10-31 22:01:32,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 90 transitions, 796 flow [2024-10-31 22:01:32,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 90 transitions, 727 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-10-31 22:01:32,823 INFO L231 Difference]: Finished difference. Result has 86 places, 67 transitions, 474 flow [2024-10-31 22:01:32,823 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=474, PETRI_PLACES=86, PETRI_TRANSITIONS=67} [2024-10-31 22:01:32,824 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 46 predicate places. [2024-10-31 22:01:32,824 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 67 transitions, 474 flow [2024-10-31 22:01:32,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:32,824 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:32,824 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:32,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-31 22:01:32,825 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-31 22:01:32,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:32,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1965352537, now seen corresponding path program 10 times [2024-10-31 22:01:32,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:32,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167024636] [2024-10-31 22:01:32,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:32,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:32,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:33,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:01:33,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:33,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167024636] [2024-10-31 22:01:33,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167024636] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:33,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:33,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-31 22:01:33,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018975148] [2024-10-31 22:01:33,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:33,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:01:33,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:33,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:01:33,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:01:33,446 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-31 22:01:33,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 67 transitions, 474 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:33,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:33,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-31 22:01:33,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:33,840 INFO L124 PetriNetUnfolderBase]: 230/504 cut-off events. [2024-10-31 22:01:33,841 INFO L125 PetriNetUnfolderBase]: For 2507/2531 co-relation queries the response was YES. [2024-10-31 22:01:33,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2001 conditions, 504 events. 230/504 cut-off events. For 2507/2531 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2416 event pairs, 39 based on Foata normal form. 5/508 useless extension candidates. Maximal degree in co-relation 1969. Up to 302 conditions per place. [2024-10-31 22:01:33,847 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 64 selfloop transitions, 23 changer transitions 5/96 dead transitions. [2024-10-31 22:01:33,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 96 transitions, 845 flow [2024-10-31 22:01:33,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:01:33,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-31 22:01:33,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-10-31 22:01:33,849 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.395 [2024-10-31 22:01:33,849 INFO L175 Difference]: Start difference. First operand has 86 places, 67 transitions, 474 flow. Second operand 10 states and 158 transitions. [2024-10-31 22:01:33,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 96 transitions, 845 flow [2024-10-31 22:01:33,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 96 transitions, 787 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-10-31 22:01:33,862 INFO L231 Difference]: Finished difference. Result has 88 places, 70 transitions, 523 flow [2024-10-31 22:01:33,862 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=523, PETRI_PLACES=88, PETRI_TRANSITIONS=70} [2024-10-31 22:01:33,863 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 48 predicate places. [2024-10-31 22:01:33,863 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 70 transitions, 523 flow [2024-10-31 22:01:33,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:33,864 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:33,864 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:33,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-31 22:01:33,865 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-31 22:01:33,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:33,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1187406449, now seen corresponding path program 11 times [2024-10-31 22:01:33,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:33,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289522976] [2024-10-31 22:01:33,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:33,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:33,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:34,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:01:34,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:34,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289522976] [2024-10-31 22:01:34,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289522976] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:34,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:34,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-31 22:01:34,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203893474] [2024-10-31 22:01:34,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:34,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:01:34,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:34,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:01:34,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:01:34,333 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-31 22:01:34,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 70 transitions, 523 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:34,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:34,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-31 22:01:34,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:34,631 INFO L124 PetriNetUnfolderBase]: 226/491 cut-off events. [2024-10-31 22:01:34,631 INFO L125 PetriNetUnfolderBase]: For 3345/3383 co-relation queries the response was YES. [2024-10-31 22:01:34,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2055 conditions, 491 events. 226/491 cut-off events. For 3345/3383 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2332 event pairs, 39 based on Foata normal form. 13/503 useless extension candidates. Maximal degree in co-relation 2025. Up to 306 conditions per place. [2024-10-31 22:01:34,637 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 58 selfloop transitions, 22 changer transitions 8/92 dead transitions. [2024-10-31 22:01:34,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 92 transitions, 840 flow [2024-10-31 22:01:34,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:01:34,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-31 22:01:34,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-10-31 22:01:34,639 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3825 [2024-10-31 22:01:34,639 INFO L175 Difference]: Start difference. First operand has 88 places, 70 transitions, 523 flow. Second operand 10 states and 153 transitions. [2024-10-31 22:01:34,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 92 transitions, 840 flow [2024-10-31 22:01:34,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 92 transitions, 763 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-10-31 22:01:34,653 INFO L231 Difference]: Finished difference. Result has 91 places, 70 transitions, 503 flow [2024-10-31 22:01:34,654 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=503, PETRI_PLACES=91, PETRI_TRANSITIONS=70} [2024-10-31 22:01:34,654 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 51 predicate places. [2024-10-31 22:01:34,654 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 70 transitions, 503 flow [2024-10-31 22:01:34,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:34,655 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:34,655 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:34,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-31 22:01:34,655 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-31 22:01:34,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:34,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1831596706, now seen corresponding path program 1 times [2024-10-31 22:01:34,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:34,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134830114] [2024-10-31 22:01:34,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:34,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:34,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:34,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:34,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:34,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134830114] [2024-10-31 22:01:34,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134830114] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:01:34,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265484360] [2024-10-31 22:01:34,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:34,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:34,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:34,812 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:01:34,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:01:34,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:34,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-31 22:01:34,916 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:01:35,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:35,031 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:01:35,182 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:35,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265484360] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:01:35,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:01:35,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2024-10-31 22:01:35,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798031173] [2024-10-31 22:01:35,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:01:35,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-31 22:01:35,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:35,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-31 22:01:35,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-10-31 22:01:35,220 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-10-31 22:01:35,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 70 transitions, 503 flow. Second operand has 14 states, 14 states have (on average 13.428571428571429) internal successors, (188), 14 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:35,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:35,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-10-31 22:01:35,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:35,654 INFO L124 PetriNetUnfolderBase]: 359/859 cut-off events. [2024-10-31 22:01:35,654 INFO L125 PetriNetUnfolderBase]: For 6495/6545 co-relation queries the response was YES. [2024-10-31 22:01:35,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3616 conditions, 859 events. 359/859 cut-off events. For 6495/6545 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5101 event pairs, 148 based on Foata normal form. 38/896 useless extension candidates. Maximal degree in co-relation 3581. Up to 369 conditions per place. [2024-10-31 22:01:35,664 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 112 selfloop transitions, 8 changer transitions 13/138 dead transitions. [2024-10-31 22:01:35,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 138 transitions, 1314 flow [2024-10-31 22:01:35,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:01:35,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:01:35,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-10-31 22:01:35,666 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-10-31 22:01:35,666 INFO L175 Difference]: Start difference. First operand has 91 places, 70 transitions, 503 flow. Second operand 8 states and 138 transitions. [2024-10-31 22:01:35,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 138 transitions, 1314 flow [2024-10-31 22:01:35,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 138 transitions, 1194 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-10-31 22:01:35,684 INFO L231 Difference]: Finished difference. Result has 91 places, 72 transitions, 508 flow [2024-10-31 22:01:35,684 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=508, PETRI_PLACES=91, PETRI_TRANSITIONS=72} [2024-10-31 22:01:35,685 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 51 predicate places. [2024-10-31 22:01:35,685 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 72 transitions, 508 flow [2024-10-31 22:01:35,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.428571428571429) internal successors, (188), 14 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:35,685 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:35,686 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:35,706 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 22:01:35,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-31 22:01:35,890 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-31 22:01:35,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:35,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1817878605, now seen corresponding path program 1 times [2024-10-31 22:01:35,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:35,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392243852] [2024-10-31 22:01:35,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:35,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:35,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:35,967 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:01:35,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:35,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392243852] [2024-10-31 22:01:35,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392243852] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:35,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:35,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:01:35,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038762708] [2024-10-31 22:01:35,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:35,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:01:35,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:35,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:01:35,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:01:35,972 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-10-31 22:01:35,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 72 transitions, 508 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:35,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:35,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-10-31 22:01:35,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:36,170 INFO L124 PetriNetUnfolderBase]: 341/861 cut-off events. [2024-10-31 22:01:36,171 INFO L125 PetriNetUnfolderBase]: For 7837/7949 co-relation queries the response was YES. [2024-10-31 22:01:36,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3603 conditions, 861 events. 341/861 cut-off events. For 7837/7949 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5122 event pairs, 98 based on Foata normal form. 83/943 useless extension candidates. Maximal degree in co-relation 3530. Up to 322 conditions per place. [2024-10-31 22:01:36,179 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 58 selfloop transitions, 7 changer transitions 27/97 dead transitions. [2024-10-31 22:01:36,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 97 transitions, 852 flow [2024-10-31 22:01:36,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:01:36,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:01:36,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-10-31 22:01:36,181 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.56875 [2024-10-31 22:01:36,181 INFO L175 Difference]: Start difference. First operand has 91 places, 72 transitions, 508 flow. Second operand 4 states and 91 transitions. [2024-10-31 22:01:36,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 97 transitions, 852 flow [2024-10-31 22:01:36,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 97 transitions, 807 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-10-31 22:01:36,196 INFO L231 Difference]: Finished difference. Result has 90 places, 44 transitions, 308 flow [2024-10-31 22:01:36,197 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=308, PETRI_PLACES=90, PETRI_TRANSITIONS=44} [2024-10-31 22:01:36,197 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 50 predicate places. [2024-10-31 22:01:36,197 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 44 transitions, 308 flow [2024-10-31 22:01:36,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:36,198 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:36,198 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:36,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-31 22:01:36,198 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-31 22:01:36,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:36,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1362151489, now seen corresponding path program 2 times [2024-10-31 22:01:36,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:36,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790668367] [2024-10-31 22:01:36,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:36,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:36,610 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:36,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:36,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790668367] [2024-10-31 22:01:36,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790668367] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:01:36,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795257454] [2024-10-31 22:01:36,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:01:36,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:36,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:36,614 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:01:36,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:01:36,714 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:01:36,715 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:01:36,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-31 22:01:36,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:01:37,123 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-31 22:01:37,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-10-31 22:01:37,134 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:37,134 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:01:37,395 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-31 22:01:37,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-10-31 22:01:37,760 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:37,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795257454] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:01:37,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:01:37,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-10-31 22:01:37,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365888062] [2024-10-31 22:01:37,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:01:37,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-31 22:01:37,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:37,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-31 22:01:37,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2024-10-31 22:01:37,857 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-31 22:01:37,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 44 transitions, 308 flow. Second operand has 22 states, 22 states have (on average 10.863636363636363) internal successors, (239), 22 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:37,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:37,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-31 22:01:37,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:39,894 INFO L124 PetriNetUnfolderBase]: 945/1811 cut-off events. [2024-10-31 22:01:39,895 INFO L125 PetriNetUnfolderBase]: For 18411/18411 co-relation queries the response was YES. [2024-10-31 22:01:39,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8014 conditions, 1811 events. 945/1811 cut-off events. For 18411/18411 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 10079 event pairs, 160 based on Foata normal form. 39/1849 useless extension candidates. Maximal degree in co-relation 7781. Up to 396 conditions per place. [2024-10-31 22:01:39,918 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 156 selfloop transitions, 42 changer transitions 0/201 dead transitions. [2024-10-31 22:01:39,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 201 transitions, 1907 flow [2024-10-31 22:01:39,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-31 22:01:39,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-31 22:01:39,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 307 transitions. [2024-10-31 22:01:39,921 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4263888888888889 [2024-10-31 22:01:39,921 INFO L175 Difference]: Start difference. First operand has 90 places, 44 transitions, 308 flow. Second operand 18 states and 307 transitions. [2024-10-31 22:01:39,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 201 transitions, 1907 flow [2024-10-31 22:01:39,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 201 transitions, 1364 flow, removed 257 selfloop flow, removed 17 redundant places. [2024-10-31 22:01:39,942 INFO L231 Difference]: Finished difference. Result has 79 places, 82 transitions, 655 flow [2024-10-31 22:01:39,942 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=655, PETRI_PLACES=79, PETRI_TRANSITIONS=82} [2024-10-31 22:01:39,943 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 39 predicate places. [2024-10-31 22:01:39,943 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 82 transitions, 655 flow [2024-10-31 22:01:39,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 10.863636363636363) internal successors, (239), 22 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:39,944 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:39,944 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:39,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-31 22:01:40,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:40,144 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-31 22:01:40,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:40,145 INFO L85 PathProgramCache]: Analyzing trace with hash 2145393365, now seen corresponding path program 3 times [2024-10-31 22:01:40,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:40,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174837082] [2024-10-31 22:01:40,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:40,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:40,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:40,695 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:40,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:40,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174837082] [2024-10-31 22:01:40,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174837082] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:01:40,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436950009] [2024-10-31 22:01:40,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-31 22:01:40,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:40,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:40,699 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:01:40,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 22:01:40,796 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-31 22:01:40,796 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:01:40,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-31 22:01:40,799 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:01:40,882 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-31 22:01:40,882 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:01:40,946 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-31 22:01:40,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-10-31 22:01:40,977 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-31 22:01:40,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436950009] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:01:40,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:01:40,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 13 [2024-10-31 22:01:40,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298251333] [2024-10-31 22:01:40,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:01:40,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-31 22:01:40,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:40,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-31 22:01:40,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-10-31 22:01:41,023 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-31 22:01:41,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 82 transitions, 655 flow. Second operand has 14 states, 14 states have (on average 11.357142857142858) internal successors, (159), 14 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:41,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:41,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-31 22:01:41,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:41,918 INFO L124 PetriNetUnfolderBase]: 1314/2521 cut-off events. [2024-10-31 22:01:41,918 INFO L125 PetriNetUnfolderBase]: For 10652/10652 co-relation queries the response was YES. [2024-10-31 22:01:41,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9613 conditions, 2521 events. 1314/2521 cut-off events. For 10652/10652 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 14463 event pairs, 257 based on Foata normal form. 56/2576 useless extension candidates. Maximal degree in co-relation 7824. Up to 1031 conditions per place. [2024-10-31 22:01:41,959 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 131 selfloop transitions, 34 changer transitions 0/168 dead transitions. [2024-10-31 22:01:41,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 168 transitions, 1641 flow [2024-10-31 22:01:41,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-31 22:01:41,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-31 22:01:41,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-10-31 22:01:41,961 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3795454545454545 [2024-10-31 22:01:41,961 INFO L175 Difference]: Start difference. First operand has 79 places, 82 transitions, 655 flow. Second operand 11 states and 167 transitions. [2024-10-31 22:01:41,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 168 transitions, 1641 flow [2024-10-31 22:01:41,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 168 transitions, 1503 flow, removed 67 selfloop flow, removed 4 redundant places. [2024-10-31 22:01:41,991 INFO L231 Difference]: Finished difference. Result has 87 places, 95 transitions, 795 flow [2024-10-31 22:01:41,991 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=795, PETRI_PLACES=87, PETRI_TRANSITIONS=95} [2024-10-31 22:01:41,992 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 47 predicate places. [2024-10-31 22:01:41,992 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 95 transitions, 795 flow [2024-10-31 22:01:41,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.357142857142858) internal successors, (159), 14 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:41,992 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:41,993 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:42,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-31 22:01:42,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-31 22:01:42,197 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-31 22:01:42,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:42,198 INFO L85 PathProgramCache]: Analyzing trace with hash 175854733, now seen corresponding path program 1 times [2024-10-31 22:01:42,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:42,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243226844] [2024-10-31 22:01:42,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:42,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:42,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:43,784 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:43,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:43,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243226844] [2024-10-31 22:01:43,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243226844] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:01:43,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056035505] [2024-10-31 22:01:43,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:43,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:43,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:43,786 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:01:43,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0c02c3-9be5-48e0-be3c-917ae11d8c36/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-31 22:01:43,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:43,884 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-10-31 22:01:43,887 INFO L278 TraceCheckSpWp]: Computing forward predicates...