./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe019_rmo.oepc.i --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_c9c8179e-a28c-4514-8f02-2183aedaecfc/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9c8179e-a28c-4514-8f02-2183aedaecfc/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_c9c8179e-a28c-4514-8f02-2183aedaecfc/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9c8179e-a28c-4514-8f02-2183aedaecfc/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe019_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9c8179e-a28c-4514-8f02-2183aedaecfc/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_c9c8179e-a28c-4514-8f02-2183aedaecfc/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 63f865703c59d821a54141355edec3427193a51b37abbaa1f96833fe96db9b5e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:15:35,433 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:15:35,602 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9c8179e-a28c-4514-8f02-2183aedaecfc/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-31 22:15:35,618 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:15:35,622 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:15:35,664 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:15:35,666 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:15:35,667 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:15:35,668 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:15:35,668 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:15:35,670 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:15:35,670 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:15:35,671 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:15:35,671 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:15:35,672 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:15:35,675 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:15:35,675 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:15:35,675 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:15:35,676 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:15:35,676 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:15:35,676 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-31 22:15:35,677 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-31 22:15:35,681 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-31 22:15:35,681 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:15:35,681 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 22:15:35,682 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:15:35,682 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:15:35,682 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:15:35,682 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:15:35,683 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:15:35,683 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:15:35,683 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:15:35,685 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:15:35,686 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:15:35,686 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:15:35,687 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:15:35,687 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:15:35,687 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:15:35,687 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:15:35,688 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:15:35,688 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:15:35,688 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:15:35,688 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_c9c8179e-a28c-4514-8f02-2183aedaecfc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9c8179e-a28c-4514-8f02-2183aedaecfc/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63f865703c59d821a54141355edec3427193a51b37abbaa1f96833fe96db9b5e [2024-10-31 22:15:36,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:15:36,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:15:36,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:15:36,118 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:15:36,120 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:15:36,121 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9c8179e-a28c-4514-8f02-2183aedaecfc/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-wmm/safe019_rmo.oepc.i Unable to find full path for "g++" [2024-10-31 22:15:38,360 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:15:38,730 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:15:38,731 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9c8179e-a28c-4514-8f02-2183aedaecfc/sv-benchmarks/c/pthread-wmm/safe019_rmo.oepc.i [2024-10-31 22:15:38,747 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9c8179e-a28c-4514-8f02-2183aedaecfc/bin/uautomizer-verify-4GaUIPS5ZU/data/5a505259c/c44f9aafcc1a4575b982201a127da9ca/FLAG2cea0361c [2024-10-31 22:15:38,770 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9c8179e-a28c-4514-8f02-2183aedaecfc/bin/uautomizer-verify-4GaUIPS5ZU/data/5a505259c/c44f9aafcc1a4575b982201a127da9ca [2024-10-31 22:15:38,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:15:38,774 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:15:38,776 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:15:38,776 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:15:38,784 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:15:38,785 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:15:38" (1/1) ... [2024-10-31 22:15:38,786 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4977d188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:38, skipping insertion in model container [2024-10-31 22:15:38,786 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:15:38" (1/1) ... [2024-10-31 22:15:38,851 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:15:39,395 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:15:39,409 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:15:39,492 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:15:39,541 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:15:39,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:39 WrapperNode [2024-10-31 22:15:39,542 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:15:39,543 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:15:39,543 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:15:39,544 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:15:39,553 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:39" (1/1) ... [2024-10-31 22:15:39,582 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:39" (1/1) ... [2024-10-31 22:15:39,639 INFO L138 Inliner]: procedures = 176, calls = 70, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 173 [2024-10-31 22:15:39,639 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:15:39,640 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:15:39,640 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:15:39,640 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:15:39,659 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:39" (1/1) ... [2024-10-31 22:15:39,659 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:39" (1/1) ... [2024-10-31 22:15:39,666 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:39" (1/1) ... [2024-10-31 22:15:39,706 INFO L175 MemorySlicer]: Split 24 memory accesses to 2 slices as follows [2, 22]. 92 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 9 writes are split as follows [0, 9]. [2024-10-31 22:15:39,707 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:39" (1/1) ... [2024-10-31 22:15:39,707 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:39" (1/1) ... [2024-10-31 22:15:39,728 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:39" (1/1) ... [2024-10-31 22:15:39,732 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:39" (1/1) ... [2024-10-31 22:15:39,734 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:39" (1/1) ... [2024-10-31 22:15:39,742 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:39" (1/1) ... [2024-10-31 22:15:39,750 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:15:39,751 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:15:39,754 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:15:39,754 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:15:39,755 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:39" (1/1) ... [2024-10-31 22:15:39,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:15:39,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9c8179e-a28c-4514-8f02-2183aedaecfc/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:15:39,795 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9c8179e-a28c-4514-8f02-2183aedaecfc/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:15:39,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9c8179e-a28c-4514-8f02-2183aedaecfc/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:15:39,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:15:39,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:15:39,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:15:39,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:15:39,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:15:39,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:15:39,837 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-31 22:15:39,837 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-31 22:15:39,837 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-31 22:15:39,837 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-31 22:15:39,838 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-10-31 22:15:39,838 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-10-31 22:15:39,838 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-10-31 22:15:39,838 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-10-31 22:15:39,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:15:39,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:15:39,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:15:39,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:15:39,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:15:39,841 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 22:15:40,018 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:15:40,021 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:15:40,730 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:15:40,731 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:15:41,572 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:15:41,574 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-31 22:15:41,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:15:41 BoogieIcfgContainer [2024-10-31 22:15:41,574 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:15:41,579 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:15:41,579 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:15:41,585 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:15:41,586 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:15:38" (1/3) ... [2024-10-31 22:15:41,586 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d8c92e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:15:41, skipping insertion in model container [2024-10-31 22:15:41,587 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:39" (2/3) ... [2024-10-31 22:15:41,587 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d8c92e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:15:41, skipping insertion in model container [2024-10-31 22:15:41,587 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:15:41" (3/3) ... [2024-10-31 22:15:41,590 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_rmo.oepc.i [2024-10-31 22:15:41,613 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:15:41,613 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2024-10-31 22:15:41,613 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:15:41,812 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:15:41,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 92 transitions, 200 flow [2024-10-31 22:15:41,927 INFO L124 PetriNetUnfolderBase]: 2/88 cut-off events. [2024-10-31 22:15:41,927 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:15:41,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 88 events. 2/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 304 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2024-10-31 22:15:41,936 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 92 transitions, 200 flow [2024-10-31 22:15:41,943 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 88 transitions, 188 flow [2024-10-31 22:15:41,958 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:15:41,966 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;@2c675518, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:15:41,966 INFO L334 AbstractCegarLoop]: Starting to check reachability of 72 error locations. [2024-10-31 22:15:41,971 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:15:41,971 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-10-31 22:15:41,971 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:15:41,972 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:41,972 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-31 22:15:41,973 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2024-10-31 22:15:41,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:41,978 INFO L85 PathProgramCache]: Analyzing trace with hash 24803383, now seen corresponding path program 1 times [2024-10-31 22:15:41,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:41,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559780112] [2024-10-31 22:15:41,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:41,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:42,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:42,404 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 22:15:42,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:42,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559780112] [2024-10-31 22:15:42,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559780112] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:42,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:42,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:15:42,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534753527] [2024-10-31 22:15:42,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:42,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:15:42,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:42,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:15:42,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:15:42,463 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 92 [2024-10-31 22:15:42,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 88 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 22:15:42,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:42,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 92 [2024-10-31 22:15:42,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:48,858 INFO L124 PetriNetUnfolderBase]: 16139/23720 cut-off events. [2024-10-31 22:15:48,859 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-10-31 22:15:48,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45628 conditions, 23720 events. 16139/23720 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 2051. Compared 189373 event pairs, 16139 based on Foata normal form. 784/16286 useless extension candidates. Maximal degree in co-relation 45616. Up to 21764 conditions per place. [2024-10-31 22:15:49,105 INFO L140 encePairwiseOnDemand]: 59/92 looper letters, 36 selfloop transitions, 1 changer transitions 0/55 dead transitions. [2024-10-31 22:15:49,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 55 transitions, 196 flow [2024-10-31 22:15:49,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:15:49,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:15:49,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2024-10-31 22:15:49,121 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2024-10-31 22:15:49,123 INFO L175 Difference]: Start difference. First operand has 99 places, 88 transitions, 188 flow. Second operand 3 states and 135 transitions. [2024-10-31 22:15:49,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 55 transitions, 196 flow [2024-10-31 22:15:49,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 55 transitions, 192 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-31 22:15:49,136 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 120 flow [2024-10-31 22:15:49,141 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2024-10-31 22:15:49,145 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, -33 predicate places. [2024-10-31 22:15:49,147 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 120 flow [2024-10-31 22:15:49,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 22:15:49,148 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:49,148 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-31 22:15:49,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:15:49,149 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2024-10-31 22:15:49,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:49,149 INFO L85 PathProgramCache]: Analyzing trace with hash 24803384, now seen corresponding path program 1 times [2024-10-31 22:15:49,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:49,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452955685] [2024-10-31 22:15:49,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:49,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:49,360 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 22:15:49,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:49,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452955685] [2024-10-31 22:15:49,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452955685] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:49,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:49,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:15:49,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406825507] [2024-10-31 22:15:49,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:49,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:15:49,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:49,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:15:49,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:15:49,367 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 92 [2024-10-31 22:15:49,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 22:15:49,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:49,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 92 [2024-10-31 22:15:49,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:50,637 INFO L124 PetriNetUnfolderBase]: 2831/4522 cut-off events. [2024-10-31 22:15:50,638 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:15:50,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8548 conditions, 4522 events. 2831/4522 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 32703 event pairs, 2831 based on Foata normal form. 0/4296 useless extension candidates. Maximal degree in co-relation 8542. Up to 3954 conditions per place. [2024-10-31 22:15:50,674 INFO L140 encePairwiseOnDemand]: 81/92 looper letters, 25 selfloop transitions, 1 changer transitions 1/45 dead transitions. [2024-10-31 22:15:50,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 45 transitions, 154 flow [2024-10-31 22:15:50,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:15:50,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:15:50,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-10-31 22:15:50,680 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37318840579710144 [2024-10-31 22:15:50,680 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 120 flow. Second operand 3 states and 103 transitions. [2024-10-31 22:15:50,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 45 transitions, 154 flow [2024-10-31 22:15:50,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 45 transitions, 153 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:15:50,682 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 99 flow [2024-10-31 22:15:50,682 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2024-10-31 22:15:50,683 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, -42 predicate places. [2024-10-31 22:15:50,683 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 99 flow [2024-10-31 22:15:50,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 22:15:50,685 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:50,686 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:50,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:15:50,686 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2024-10-31 22:15:50,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:50,687 INFO L85 PathProgramCache]: Analyzing trace with hash 849852388, now seen corresponding path program 1 times [2024-10-31 22:15:50,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:50,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342258161] [2024-10-31 22:15:50,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:50,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:50,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:50,956 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 22:15:50,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:50,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342258161] [2024-10-31 22:15:50,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342258161] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:50,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:50,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:15:50,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942202687] [2024-10-31 22:15:50,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:50,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:15:50,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:50,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:15:50,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:15:50,960 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 92 [2024-10-31 22:15:50,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 22:15:50,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:50,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 92 [2024-10-31 22:15:50,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:52,141 INFO L124 PetriNetUnfolderBase]: 2383/3785 cut-off events. [2024-10-31 22:15:52,142 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:15:52,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7204 conditions, 3785 events. 2383/3785 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 24709 event pairs, 1171 based on Foata normal form. 0/3636 useless extension candidates. Maximal degree in co-relation 7197. Up to 2565 conditions per place. [2024-10-31 22:15:52,175 INFO L140 encePairwiseOnDemand]: 88/92 looper letters, 44 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2024-10-31 22:15:52,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 64 transitions, 237 flow [2024-10-31 22:15:52,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:15:52,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:15:52,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2024-10-31 22:15:52,177 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41304347826086957 [2024-10-31 22:15:52,177 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 99 flow. Second operand 3 states and 114 transitions. [2024-10-31 22:15:52,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 64 transitions, 237 flow [2024-10-31 22:15:52,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 64 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:15:52,180 INFO L231 Difference]: Finished difference. Result has 58 places, 44 transitions, 108 flow [2024-10-31 22:15:52,181 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=58, PETRI_TRANSITIONS=44} [2024-10-31 22:15:52,181 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, -41 predicate places. [2024-10-31 22:15:52,182 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 44 transitions, 108 flow [2024-10-31 22:15:52,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 22:15:52,182 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:52,183 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:52,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:15:52,183 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2024-10-31 22:15:52,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:52,184 INFO L85 PathProgramCache]: Analyzing trace with hash 664443511, now seen corresponding path program 1 times [2024-10-31 22:15:52,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:52,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490092869] [2024-10-31 22:15:52,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:52,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:52,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:52,422 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 22:15:52,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:52,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490092869] [2024-10-31 22:15:52,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490092869] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:52,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:52,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:15:52,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956229469] [2024-10-31 22:15:52,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:52,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:15:52,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:52,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:15:52,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:15:52,433 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 92 [2024-10-31 22:15:52,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 44 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 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 22:15:52,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:52,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 92 [2024-10-31 22:15:52,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:53,408 INFO L124 PetriNetUnfolderBase]: 2223/4145 cut-off events. [2024-10-31 22:15:53,408 INFO L125 PetriNetUnfolderBase]: For 310/310 co-relation queries the response was YES. [2024-10-31 22:15:53,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7962 conditions, 4145 events. 2223/4145 cut-off events. For 310/310 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 32670 event pairs, 535 based on Foata normal form. 0/4100 useless extension candidates. Maximal degree in co-relation 7953. Up to 2340 conditions per place. [2024-10-31 22:15:53,439 INFO L140 encePairwiseOnDemand]: 89/92 looper letters, 43 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2024-10-31 22:15:53,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 63 transitions, 240 flow [2024-10-31 22:15:53,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:15:53,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:15:53,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-10-31 22:15:53,441 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3641304347826087 [2024-10-31 22:15:53,441 INFO L175 Difference]: Start difference. First operand has 58 places, 44 transitions, 108 flow. Second operand 4 states and 134 transitions. [2024-10-31 22:15:53,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 63 transitions, 240 flow [2024-10-31 22:15:53,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 63 transitions, 236 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:15:53,445 INFO L231 Difference]: Finished difference. Result has 58 places, 43 transitions, 104 flow [2024-10-31 22:15:53,446 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=58, PETRI_TRANSITIONS=43} [2024-10-31 22:15:53,446 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, -41 predicate places. [2024-10-31 22:15:53,447 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 43 transitions, 104 flow [2024-10-31 22:15:53,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 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 22:15:53,447 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:53,447 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:53,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:15:53,448 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2024-10-31 22:15:53,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:53,449 INFO L85 PathProgramCache]: Analyzing trace with hash 664443512, now seen corresponding path program 1 times [2024-10-31 22:15:53,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:53,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557174074] [2024-10-31 22:15:53,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:53,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:53,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:53,890 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 22:15:53,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:53,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557174074] [2024-10-31 22:15:53,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557174074] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:53,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:53,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:15:53,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470235614] [2024-10-31 22:15:53,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:53,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:15:53,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:53,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:15:53,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:15:53,893 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 92 [2024-10-31 22:15:53,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 43 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 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 22:15:53,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:53,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 92 [2024-10-31 22:15:53,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:54,596 INFO L124 PetriNetUnfolderBase]: 2063/3337 cut-off events. [2024-10-31 22:15:54,596 INFO L125 PetriNetUnfolderBase]: For 338/338 co-relation queries the response was YES. [2024-10-31 22:15:54,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6866 conditions, 3337 events. 2063/3337 cut-off events. For 338/338 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 21403 event pairs, 947 based on Foata normal form. 64/3388 useless extension candidates. Maximal degree in co-relation 6857. Up to 2116 conditions per place. [2024-10-31 22:15:54,625 INFO L140 encePairwiseOnDemand]: 89/92 looper letters, 42 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2024-10-31 22:15:54,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 62 transitions, 234 flow [2024-10-31 22:15:54,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:15:54,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:15:54,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2024-10-31 22:15:54,627 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36141304347826086 [2024-10-31 22:15:54,628 INFO L175 Difference]: Start difference. First operand has 58 places, 43 transitions, 104 flow. Second operand 4 states and 133 transitions. [2024-10-31 22:15:54,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 62 transitions, 234 flow [2024-10-31 22:15:54,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 62 transitions, 229 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:15:54,631 INFO L231 Difference]: Finished difference. Result has 57 places, 42 transitions, 99 flow [2024-10-31 22:15:54,631 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=99, PETRI_PLACES=57, PETRI_TRANSITIONS=42} [2024-10-31 22:15:54,633 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, -42 predicate places. [2024-10-31 22:15:54,633 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 42 transitions, 99 flow [2024-10-31 22:15:54,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 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 22:15:54,633 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:54,634 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:54,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:15:54,634 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2024-10-31 22:15:54,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:54,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1470813549, now seen corresponding path program 1 times [2024-10-31 22:15:54,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:54,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455781812] [2024-10-31 22:15:54,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:54,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:54,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:54,720 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 22:15:54,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:54,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455781812] [2024-10-31 22:15:54,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455781812] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:54,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:54,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:15:54,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792396369] [2024-10-31 22:15:54,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:54,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:15:54,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:54,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:15:54,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:15:54,725 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 92 [2024-10-31 22:15:54,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 22:15:54,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:54,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 92 [2024-10-31 22:15:54,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:55,367 INFO L124 PetriNetUnfolderBase]: 2063/3370 cut-off events. [2024-10-31 22:15:55,367 INFO L125 PetriNetUnfolderBase]: For 278/278 co-relation queries the response was YES. [2024-10-31 22:15:55,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6898 conditions, 3370 events. 2063/3370 cut-off events. For 278/278 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 23493 event pairs, 2063 based on Foata normal form. 96/3432 useless extension candidates. Maximal degree in co-relation 6890. Up to 2898 conditions per place. [2024-10-31 22:15:55,387 INFO L140 encePairwiseOnDemand]: 90/92 looper letters, 22 selfloop transitions, 1 changer transitions 1/41 dead transitions. [2024-10-31 22:15:55,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 41 transitions, 145 flow [2024-10-31 22:15:55,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:15:55,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:15:55,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2024-10-31 22:15:55,388 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3188405797101449 [2024-10-31 22:15:55,389 INFO L175 Difference]: Start difference. First operand has 57 places, 42 transitions, 99 flow. Second operand 3 states and 88 transitions. [2024-10-31 22:15:55,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 41 transitions, 145 flow [2024-10-31 22:15:55,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 41 transitions, 142 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:15:55,390 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 94 flow [2024-10-31 22:15:55,391 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2024-10-31 22:15:55,391 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, -43 predicate places. [2024-10-31 22:15:55,392 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 94 flow [2024-10-31 22:15:55,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 22:15:55,392 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:55,392 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:55,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:15:55,393 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2024-10-31 22:15:55,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:55,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1470815157, now seen corresponding path program 1 times [2024-10-31 22:15:55,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:55,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64268601] [2024-10-31 22:15:55,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:55,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:55,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:55,678 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 22:15:55,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:55,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64268601] [2024-10-31 22:15:55,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64268601] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:55,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:55,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:15:55,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941511344] [2024-10-31 22:15:55,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:55,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:15:55,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:55,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:15:55,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:15:55,689 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 92 [2024-10-31 22:15:55,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 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 22:15:55,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:55,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 92 [2024-10-31 22:15:55,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:57,948 INFO L124 PetriNetUnfolderBase]: 7438/11046 cut-off events. [2024-10-31 22:15:57,948 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:15:57,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22707 conditions, 11046 events. 7438/11046 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 637. Compared 72417 event pairs, 770 based on Foata normal form. 300/11335 useless extension candidates. Maximal degree in co-relation 22699. Up to 6691 conditions per place. [2024-10-31 22:15:58,010 INFO L140 encePairwiseOnDemand]: 85/92 looper letters, 51 selfloop transitions, 6 changer transitions 1/70 dead transitions. [2024-10-31 22:15:58,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 70 transitions, 280 flow [2024-10-31 22:15:58,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:15:58,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:15:58,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2024-10-31 22:15:58,012 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34782608695652173 [2024-10-31 22:15:58,013 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 94 flow. Second operand 4 states and 128 transitions. [2024-10-31 22:15:58,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 70 transitions, 280 flow [2024-10-31 22:15:58,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 70 transitions, 279 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:15:58,014 INFO L231 Difference]: Finished difference. Result has 59 places, 44 transitions, 135 flow [2024-10-31 22:15:58,015 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=135, PETRI_PLACES=59, PETRI_TRANSITIONS=44} [2024-10-31 22:15:58,016 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, -40 predicate places. [2024-10-31 22:15:58,016 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 44 transitions, 135 flow [2024-10-31 22:15:58,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 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 22:15:58,016 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:58,017 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] [2024-10-31 22:15:58,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:15:58,017 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2024-10-31 22:15:58,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:58,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1226106701, now seen corresponding path program 1 times [2024-10-31 22:15:58,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:58,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137119363] [2024-10-31 22:15:58,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:58,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:58,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:58,328 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 22:15:58,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:58,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137119363] [2024-10-31 22:15:58,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137119363] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:58,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:58,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:15:58,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058478003] [2024-10-31 22:15:58,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:58,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:15:58,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:58,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:15:58,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:15:58,350 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 92 [2024-10-31 22:15:58,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 44 transitions, 135 flow. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 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 22:15:58,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:58,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 92 [2024-10-31 22:15:58,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:59,610 INFO L124 PetriNetUnfolderBase]: 5806/8694 cut-off events. [2024-10-31 22:15:59,610 INFO L125 PetriNetUnfolderBase]: For 2109/2109 co-relation queries the response was YES. [2024-10-31 22:15:59,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20738 conditions, 8694 events. 5806/8694 cut-off events. For 2109/2109 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 54228 event pairs, 294 based on Foata normal form. 282/8965 useless extension candidates. Maximal degree in co-relation 20727. Up to 4585 conditions per place. [2024-10-31 22:15:59,668 INFO L140 encePairwiseOnDemand]: 85/92 looper letters, 65 selfloop transitions, 10 changer transitions 1/88 dead transitions. [2024-10-31 22:15:59,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 88 transitions, 410 flow [2024-10-31 22:15:59,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:15:59,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:15:59,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 163 transitions. [2024-10-31 22:15:59,670 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35434782608695653 [2024-10-31 22:15:59,670 INFO L175 Difference]: Start difference. First operand has 59 places, 44 transitions, 135 flow. Second operand 5 states and 163 transitions. [2024-10-31 22:15:59,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 88 transitions, 410 flow [2024-10-31 22:15:59,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 88 transitions, 399 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-31 22:15:59,674 INFO L231 Difference]: Finished difference. Result has 63 places, 48 transitions, 187 flow [2024-10-31 22:15:59,675 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=187, PETRI_PLACES=63, PETRI_TRANSITIONS=48} [2024-10-31 22:15:59,675 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, -36 predicate places. [2024-10-31 22:15:59,676 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 48 transitions, 187 flow [2024-10-31 22:15:59,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 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 22:15:59,676 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:59,680 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 22:15:59,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:15:59,684 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2024-10-31 22:15:59,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:59,684 INFO L85 PathProgramCache]: Analyzing trace with hash 493415449, now seen corresponding path program 1 times [2024-10-31 22:15:59,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:59,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980850117] [2024-10-31 22:15:59,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:59,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:59,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:00,090 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 22:16:00,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:00,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980850117] [2024-10-31 22:16:00,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980850117] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:00,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:00,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:16:00,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180654613] [2024-10-31 22:16:00,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:00,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:16:00,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:00,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:16:00,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:16:00,110 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 92 [2024-10-31 22:16:00,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 48 transitions, 187 flow. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 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 22:16:00,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:16:00,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 92 [2024-10-31 22:16:00,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:16:01,317 INFO L124 PetriNetUnfolderBase]: 3561/5327 cut-off events. [2024-10-31 22:16:01,317 INFO L125 PetriNetUnfolderBase]: For 3900/3900 co-relation queries the response was YES. [2024-10-31 22:16:01,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14214 conditions, 5327 events. 3561/5327 cut-off events. For 3900/3900 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 29230 event pairs, 149 based on Foata normal form. 204/5520 useless extension candidates. Maximal degree in co-relation 14201. Up to 1801 conditions per place. [2024-10-31 22:16:01,353 INFO L140 encePairwiseOnDemand]: 85/92 looper letters, 77 selfloop transitions, 14 changer transitions 1/104 dead transitions. [2024-10-31 22:16:01,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 104 transitions, 539 flow [2024-10-31 22:16:01,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:16:01,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:16:01,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 196 transitions. [2024-10-31 22:16:01,355 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35507246376811596 [2024-10-31 22:16:01,355 INFO L175 Difference]: Start difference. First operand has 63 places, 48 transitions, 187 flow. Second operand 6 states and 196 transitions. [2024-10-31 22:16:01,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 104 transitions, 539 flow [2024-10-31 22:16:01,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 104 transitions, 509 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-10-31 22:16:01,373 INFO L231 Difference]: Finished difference. Result has 66 places, 52 transitions, 237 flow [2024-10-31 22:16:01,373 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=237, PETRI_PLACES=66, PETRI_TRANSITIONS=52} [2024-10-31 22:16:01,374 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, -33 predicate places. [2024-10-31 22:16:01,374 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 52 transitions, 237 flow [2024-10-31 22:16:01,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 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 22:16:01,375 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:16:01,375 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, 1, 1, 1, 1, 1] [2024-10-31 22:16:01,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:16:01,376 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2024-10-31 22:16:01,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:01,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1954440013, now seen corresponding path program 1 times [2024-10-31 22:16:01,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:01,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979502219] [2024-10-31 22:16:01,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:01,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:01,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:02,013 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 22:16:02,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:02,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979502219] [2024-10-31 22:16:02,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979502219] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:02,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:02,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:16:02,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211112283] [2024-10-31 22:16:02,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:02,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:16:02,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:02,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:16:02,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:16:02,036 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 92 [2024-10-31 22:16:02,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 52 transitions, 237 flow. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 0 states have call successors, (0), 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 22:16:02,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:16:02,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 92 [2024-10-31 22:16:02,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:16:03,034 INFO L124 PetriNetUnfolderBase]: 2205/3207 cut-off events. [2024-10-31 22:16:03,034 INFO L125 PetriNetUnfolderBase]: For 4072/4072 co-relation queries the response was YES. [2024-10-31 22:16:03,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9583 conditions, 3207 events. 2205/3207 cut-off events. For 4072/4072 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 15517 event pairs, 103 based on Foata normal form. 88/3284 useless extension candidates. Maximal degree in co-relation 9569. Up to 1020 conditions per place. [2024-10-31 22:16:03,061 INFO L140 encePairwiseOnDemand]: 85/92 looper letters, 69 selfloop transitions, 18 changer transitions 1/100 dead transitions. [2024-10-31 22:16:03,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 100 transitions, 531 flow [2024-10-31 22:16:03,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:16:03,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 22:16:03,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 209 transitions. [2024-10-31 22:16:03,065 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3245341614906832 [2024-10-31 22:16:03,065 INFO L175 Difference]: Start difference. First operand has 66 places, 52 transitions, 237 flow. Second operand 7 states and 209 transitions. [2024-10-31 22:16:03,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 100 transitions, 531 flow [2024-10-31 22:16:03,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 100 transitions, 485 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-10-31 22:16:03,093 INFO L231 Difference]: Finished difference. Result has 69 places, 52 transitions, 247 flow [2024-10-31 22:16:03,093 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=247, PETRI_PLACES=69, PETRI_TRANSITIONS=52} [2024-10-31 22:16:03,094 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, -30 predicate places. [2024-10-31 22:16:03,094 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 52 transitions, 247 flow [2024-10-31 22:16:03,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 0 states have call successors, (0), 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 22:16:03,095 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:16:03,095 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:03,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-31 22:16:03,096 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2024-10-31 22:16:03,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:03,096 INFO L85 PathProgramCache]: Analyzing trace with hash 900437490, now seen corresponding path program 1 times [2024-10-31 22:16:03,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:03,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226128664] [2024-10-31 22:16:03,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:03,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:03,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:03,890 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 22:16:03,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:03,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226128664] [2024-10-31 22:16:03,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226128664] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:03,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:03,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:16:03,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371615987] [2024-10-31 22:16:03,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:03,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:16:03,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:03,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:16:03,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:16:03,915 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 92 [2024-10-31 22:16:03,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 52 transitions, 247 flow. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 0 states have call successors, (0), 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 22:16:03,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:16:03,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 92 [2024-10-31 22:16:03,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:16:04,869 INFO L124 PetriNetUnfolderBase]: 2814/4699 cut-off events. [2024-10-31 22:16:04,869 INFO L125 PetriNetUnfolderBase]: For 2487/2593 co-relation queries the response was YES. [2024-10-31 22:16:04,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11778 conditions, 4699 events. 2814/4699 cut-off events. For 2487/2593 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 30502 event pairs, 489 based on Foata normal form. 16/4505 useless extension candidates. Maximal degree in co-relation 11763. Up to 1648 conditions per place. [2024-10-31 22:16:04,896 INFO L140 encePairwiseOnDemand]: 86/92 looper letters, 42 selfloop transitions, 3 changer transitions 18/90 dead transitions. [2024-10-31 22:16:04,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 90 transitions, 469 flow [2024-10-31 22:16:04,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:16:04,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:16:04,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 184 transitions. [2024-10-31 22:16:04,898 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-10-31 22:16:04,898 INFO L175 Difference]: Start difference. First operand has 69 places, 52 transitions, 247 flow. Second operand 6 states and 184 transitions. [2024-10-31 22:16:04,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 90 transitions, 469 flow [2024-10-31 22:16:04,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 90 transitions, 363 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-10-31 22:16:04,931 INFO L231 Difference]: Finished difference. Result has 67 places, 53 transitions, 169 flow [2024-10-31 22:16:04,931 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=169, PETRI_PLACES=67, PETRI_TRANSITIONS=53} [2024-10-31 22:16:04,932 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, -32 predicate places. [2024-10-31 22:16:04,932 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 53 transitions, 169 flow [2024-10-31 22:16:04,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 0 states have call successors, (0), 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 22:16:04,932 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:16:04,933 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:04,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-31 22:16:04,933 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2024-10-31 22:16:04,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:04,933 INFO L85 PathProgramCache]: Analyzing trace with hash -504282788, now seen corresponding path program 2 times [2024-10-31 22:16:04,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:04,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546735306] [2024-10-31 22:16:04,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:04,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:05,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat