./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff47df3-153c-46da-8f20-cafd1179ff9d/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff47df3-153c-46da-8f20-cafd1179ff9d/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff47df3-153c-46da-8f20-cafd1179ff9d/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff47df3-153c-46da-8f20-cafd1179ff9d/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff47df3-153c-46da-8f20-cafd1179ff9d/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff47df3-153c-46da-8f20-cafd1179ff9d/bin/uautomizer-verify-aQ6SnzHsRB --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 3e2d1ca14c91be6e836759580a015ed2d4b9eb8ea9888f9f925ea579405b630f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:21:20,565 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:21:20,674 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff47df3-153c-46da-8f20-cafd1179ff9d/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 05:21:20,682 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:21:20,683 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:21:20,729 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:21:20,730 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:21:20,730 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:21:20,731 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:21:20,731 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:21:20,731 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:21:20,732 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:21:20,732 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:21:20,732 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:21:20,733 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:21:20,733 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:21:20,733 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:21:20,733 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:21:20,736 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:21:20,736 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:21:20,737 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 05:21:20,737 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 05:21:20,737 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 05:21:20,737 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:21:20,737 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 05:21:20,737 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 05:21:20,738 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:21:20,738 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:21:20,738 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:21:20,738 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:21:20,738 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:21:20,738 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:21:20,738 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:21:20,739 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:21:20,739 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:21:20,739 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:21:20,739 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:21:20,739 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:21:20,739 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:21:20,739 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:21:20,739 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:21:20,739 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:21:20,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:21:20,740 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:21:20,740 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:21:20,740 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:21:20,740 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:21:20,740 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_7ff47df3-153c-46da-8f20-cafd1179ff9d/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 3e2d1ca14c91be6e836759580a015ed2d4b9eb8ea9888f9f925ea579405b630f [2024-11-28 05:21:21,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:21:21,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:21:21,122 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:21:21,125 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:21:21,125 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:21:21,128 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff47df3-153c-46da-8f20-cafd1179ff9d/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i [2024-11-28 05:21:24,901 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff47df3-153c-46da-8f20-cafd1179ff9d/bin/uautomizer-verify-aQ6SnzHsRB/data/8e8ce48a3/c4ac1fc4004d495399d291e2922af397/FLAG00e628aaf [2024-11-28 05:21:25,545 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:21:25,546 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff47df3-153c-46da-8f20-cafd1179ff9d/sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i [2024-11-28 05:21:25,577 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff47df3-153c-46da-8f20-cafd1179ff9d/bin/uautomizer-verify-aQ6SnzHsRB/data/8e8ce48a3/c4ac1fc4004d495399d291e2922af397/FLAG00e628aaf [2024-11-28 05:21:25,605 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff47df3-153c-46da-8f20-cafd1179ff9d/bin/uautomizer-verify-aQ6SnzHsRB/data/8e8ce48a3/c4ac1fc4004d495399d291e2922af397 [2024-11-28 05:21:25,608 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:21:25,611 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:21:25,612 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:21:25,612 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:21:25,624 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:21:25,625 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:21:25" (1/1) ... [2024-11-28 05:21:25,630 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bdf35b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:25, skipping insertion in model container [2024-11-28 05:21:25,630 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:21:25" (1/1) ... [2024-11-28 05:21:25,697 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:21:26,323 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:21:26,351 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:21:26,433 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:21:26,501 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:21:26,502 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:26 WrapperNode [2024-11-28 05:21:26,503 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:21:26,506 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:21:26,506 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:21:26,506 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:21:26,513 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:26" (1/1) ... [2024-11-28 05:21:26,534 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:26" (1/1) ... [2024-11-28 05:21:26,563 INFO L138 Inliner]: procedures = 252, calls = 52, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 137 [2024-11-28 05:21:26,563 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:21:26,564 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:21:26,564 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:21:26,564 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:21:26,573 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:26" (1/1) ... [2024-11-28 05:21:26,574 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:26" (1/1) ... [2024-11-28 05:21:26,577 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:26" (1/1) ... [2024-11-28 05:21:26,593 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 5, 5, 5, 2]. 26 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 0, 1]. [2024-11-28 05:21:26,593 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:26" (1/1) ... [2024-11-28 05:21:26,593 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:26" (1/1) ... [2024-11-28 05:21:26,603 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:26" (1/1) ... [2024-11-28 05:21:26,604 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:26" (1/1) ... [2024-11-28 05:21:26,609 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:26" (1/1) ... [2024-11-28 05:21:26,611 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:26" (1/1) ... [2024-11-28 05:21:26,613 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:26" (1/1) ... [2024-11-28 05:21:26,617 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:21:26,618 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:21:26,618 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:21:26,619 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:21:26,620 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:26" (1/1) ... [2024-11-28 05:21:26,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:21:26,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff47df3-153c-46da-8f20-cafd1179ff9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:21:26,666 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff47df3-153c-46da-8f20-cafd1179ff9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:21:26,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff47df3-153c-46da-8f20-cafd1179ff9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:21:26,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 05:21:26,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 05:21:26,699 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 05:21:26,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 05:21:26,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 05:21:26,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 05:21:26,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 05:21:26,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 05:21:26,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 05:21:26,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 05:21:26,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 05:21:26,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 05:21:26,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 05:21:26,700 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 05:21:26,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:21:26,700 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-28 05:21:26,700 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-28 05:21:26,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 05:21:26,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 05:21:26,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 05:21:26,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 05:21:26,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 05:21:26,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:21:26,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:21:26,703 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 05:21:26,896 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:21:26,898 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:21:27,345 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 05:21:27,345 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:21:27,706 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:21:27,707 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-28 05:21:27,707 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:21:27 BoogieIcfgContainer [2024-11-28 05:21:27,707 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:21:27,712 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:21:27,712 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:21:27,721 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:21:27,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:21:25" (1/3) ... [2024-11-28 05:21:27,723 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e3d8e75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:21:27, skipping insertion in model container [2024-11-28 05:21:27,724 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:26" (2/3) ... [2024-11-28 05:21:27,726 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e3d8e75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:21:27, skipping insertion in model container [2024-11-28 05:21:27,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:21:27" (3/3) ... [2024-11-28 05:21:27,728 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_28-funptr_racefree.i [2024-11-28 05:21:27,786 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:21:27,788 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_28-funptr_racefree.i that has 2 procedures, 57 locations, 1 initial locations, 6 loop locations, and 6 error locations. [2024-11-28 05:21:27,788 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 05:21:27,880 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-28 05:21:27,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 68 transitions, 143 flow [2024-11-28 05:21:28,035 INFO L124 PetriNetUnfolderBase]: 15/103 cut-off events. [2024-11-28 05:21:28,039 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 05:21:28,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 103 events. 15/103 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 361 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 63. Up to 4 conditions per place. [2024-11-28 05:21:28,045 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 68 transitions, 143 flow [2024-11-28 05:21:28,050 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 68 transitions, 143 flow [2024-11-28 05:21:28,061 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:21:28,077 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;@32ed9333, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:21:28,077 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-28 05:21:28,085 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 05:21:28,086 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-28 05:21:28,086 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 05:21:28,086 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:21:28,087 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 05:21:28,088 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-28 05:21:28,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:28,095 INFO L85 PathProgramCache]: Analyzing trace with hash 395276, now seen corresponding path program 1 times [2024-11-28 05:21:28,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:28,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29589396] [2024-11-28 05:21:28,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:28,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:28,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:21:28,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:21:28,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29589396] [2024-11-28 05:21:28,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29589396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:21:28,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:21:28,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 05:21:28,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909634668] [2024-11-28 05:21:28,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:21:28,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:21:28,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:21:28,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:21:28,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:21:28,635 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 68 [2024-11-28 05:21:28,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 68 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:21:28,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:21:28,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 68 [2024-11-28 05:21:28,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:21:29,124 INFO L124 PetriNetUnfolderBase]: 253/754 cut-off events. [2024-11-28 05:21:29,124 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 05:21:29,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1317 conditions, 754 events. 253/754 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3983 event pairs, 224 based on Foata normal form. 121/851 useless extension candidates. Maximal degree in co-relation 1256. Up to 497 conditions per place. [2024-11-28 05:21:29,133 INFO L140 encePairwiseOnDemand]: 54/68 looper letters, 47 selfloop transitions, 2 changer transitions 1/69 dead transitions. [2024-11-28 05:21:29,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 69 transitions, 245 flow [2024-11-28 05:21:29,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:21:29,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 05:21:29,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2024-11-28 05:21:29,156 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6127450980392157 [2024-11-28 05:21:29,159 INFO L175 Difference]: Start difference. First operand has 60 places, 68 transitions, 143 flow. Second operand 3 states and 125 transitions. [2024-11-28 05:21:29,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 69 transitions, 245 flow [2024-11-28 05:21:29,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 69 transitions, 245 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 05:21:29,176 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 119 flow [2024-11-28 05:21:29,179 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2024-11-28 05:21:29,183 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, -1 predicate places. [2024-11-28 05:21:29,184 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 119 flow [2024-11-28 05:21:29,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:21:29,184 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:21:29,184 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 05:21:29,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 05:21:29,185 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-28 05:21:29,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:29,188 INFO L85 PathProgramCache]: Analyzing trace with hash 395277, now seen corresponding path program 1 times [2024-11-28 05:21:29,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:29,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806346775] [2024-11-28 05:21:29,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:29,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:29,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:21:29,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:21:29,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806346775] [2024-11-28 05:21:29,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806346775] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:21:29,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:21:29,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 05:21:29,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147441005] [2024-11-28 05:21:29,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:21:29,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:21:29,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:21:29,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:21:29,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:21:29,605 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 68 [2024-11-28 05:21:29,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 119 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) [2024-11-28 05:21:29,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:21:29,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 68 [2024-11-28 05:21:29,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:21:29,917 INFO L124 PetriNetUnfolderBase]: 224/698 cut-off events. [2024-11-28 05:21:29,918 INFO L125 PetriNetUnfolderBase]: For 5/6 co-relation queries the response was YES. [2024-11-28 05:21:29,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1206 conditions, 698 events. 224/698 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3688 event pairs, 120 based on Foata normal form. 1/662 useless extension candidates. Maximal degree in co-relation 1172. Up to 468 conditions per place. [2024-11-28 05:21:29,929 INFO L140 encePairwiseOnDemand]: 64/68 looper letters, 47 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2024-11-28 05:21:29,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 69 transitions, 247 flow [2024-11-28 05:21:29,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:21:29,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 05:21:29,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2024-11-28 05:21:29,934 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5735294117647058 [2024-11-28 05:21:29,934 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 119 flow. Second operand 3 states and 117 transitions. [2024-11-28 05:21:29,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 69 transitions, 247 flow [2024-11-28 05:21:29,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 69 transitions, 243 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 05:21:29,941 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 125 flow [2024-11-28 05:21:29,942 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2024-11-28 05:21:29,944 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, -1 predicate places. [2024-11-28 05:21:29,944 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 125 flow [2024-11-28 05:21:29,947 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) [2024-11-28 05:21:29,948 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:21:29,948 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-28 05:21:29,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 05:21:29,948 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-28 05:21:29,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:29,949 INFO L85 PathProgramCache]: Analyzing trace with hash -14395628, now seen corresponding path program 1 times [2024-11-28 05:21:29,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:29,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297979935] [2024-11-28 05:21:29,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:29,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:29,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:30,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:21:30,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:21:30,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297979935] [2024-11-28 05:21:30,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297979935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:21:30,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:21:30,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:21:30,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753834451] [2024-11-28 05:21:30,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:21:30,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:21:30,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:21:30,252 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:21:30,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:21:30,288 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 68 [2024-11-28 05:21:30,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 125 flow. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:21:30,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:21:30,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 68 [2024-11-28 05:21:30,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:21:30,684 INFO L124 PetriNetUnfolderBase]: 210/662 cut-off events. [2024-11-28 05:21:30,685 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-28 05:21:30,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1171 conditions, 662 events. 210/662 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3626 event pairs, 0 based on Foata normal form. 15/657 useless extension candidates. Maximal degree in co-relation 1130. Up to 381 conditions per place. [2024-11-28 05:21:30,692 INFO L140 encePairwiseOnDemand]: 64/68 looper letters, 59 selfloop transitions, 3 changer transitions 0/82 dead transitions. [2024-11-28 05:21:30,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 82 transitions, 303 flow [2024-11-28 05:21:30,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:21:30,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:21:30,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 151 transitions. [2024-11-28 05:21:30,696 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5551470588235294 [2024-11-28 05:21:30,697 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 125 flow. Second operand 4 states and 151 transitions. [2024-11-28 05:21:30,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 82 transitions, 303 flow [2024-11-28 05:21:30,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 82 transitions, 299 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 05:21:30,704 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 123 flow [2024-11-28 05:21:30,705 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=123, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2024-11-28 05:21:30,706 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, -1 predicate places. [2024-11-28 05:21:30,707 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 123 flow [2024-11-28 05:21:30,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:21:30,708 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:21:30,708 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-28 05:21:30,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 05:21:30,709 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-28 05:21:30,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:30,710 INFO L85 PathProgramCache]: Analyzing trace with hash -446264104, now seen corresponding path program 1 times [2024-11-28 05:21:30,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:30,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269419322] [2024-11-28 05:21:30,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:30,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:30,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 05:21:30,762 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 05:21:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 05:21:30,828 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 05:21:30,829 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 05:21:30,830 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-28 05:21:30,833 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-11-28 05:21:30,833 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-11-28 05:21:30,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 7 remaining) [2024-11-28 05:21:30,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-11-28 05:21:30,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-11-28 05:21:30,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-28 05:21:30,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 05:21:30,840 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-28 05:21:30,846 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 05:21:30,847 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-28 05:21:30,904 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 05:21:30,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 97 transitions, 210 flow [2024-11-28 05:21:30,954 INFO L124 PetriNetUnfolderBase]: 27/179 cut-off events. [2024-11-28 05:21:30,954 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-28 05:21:30,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 179 events. 27/179 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 755 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 107. Up to 6 conditions per place. [2024-11-28 05:21:30,958 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 97 transitions, 210 flow [2024-11-28 05:21:30,960 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 97 transitions, 210 flow [2024-11-28 05:21:30,963 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:21:30,967 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;@32ed9333, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:21:30,967 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-28 05:21:30,971 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 05:21:30,974 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-28 05:21:30,974 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 05:21:30,974 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:21:30,974 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 05:21:30,975 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-28 05:21:30,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:30,976 INFO L85 PathProgramCache]: Analyzing trace with hash 491597, now seen corresponding path program 1 times [2024-11-28 05:21:30,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:30,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222621332] [2024-11-28 05:21:30,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:30,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:30,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:31,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:21:31,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:21:31,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222621332] [2024-11-28 05:21:31,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222621332] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:21:31,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:21:31,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 05:21:31,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5777695] [2024-11-28 05:21:31,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:21:31,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:21:31,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:21:31,077 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:21:31,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:21:31,098 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 97 [2024-11-28 05:21:31,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 97 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:21:31,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:21:31,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 97 [2024-11-28 05:21:31,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:21:33,968 INFO L124 PetriNetUnfolderBase]: 8123/15822 cut-off events. [2024-11-28 05:21:33,969 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2024-11-28 05:21:34,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28697 conditions, 15822 events. 8123/15822 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 125145 event pairs, 7210 based on Foata normal form. 2972/18287 useless extension candidates. Maximal degree in co-relation 21754. Up to 11384 conditions per place. [2024-11-28 05:21:34,087 INFO L140 encePairwiseOnDemand]: 77/97 looper letters, 77 selfloop transitions, 2 changer transitions 1/106 dead transitions. [2024-11-28 05:21:34,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 106 transitions, 388 flow [2024-11-28 05:21:34,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:21:34,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 05:21:34,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 188 transitions. [2024-11-28 05:21:34,091 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6460481099656358 [2024-11-28 05:21:34,091 INFO L175 Difference]: Start difference. First operand has 84 places, 97 transitions, 210 flow. Second operand 3 states and 188 transitions. [2024-11-28 05:21:34,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 106 transitions, 388 flow [2024-11-28 05:21:34,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 106 transitions, 388 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 05:21:34,096 INFO L231 Difference]: Finished difference. Result has 83 places, 77 transitions, 174 flow [2024-11-28 05:21:34,097 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=83, PETRI_TRANSITIONS=77} [2024-11-28 05:21:34,098 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, -1 predicate places. [2024-11-28 05:21:34,098 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 77 transitions, 174 flow [2024-11-28 05:21:34,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:21:34,098 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:21:34,098 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 05:21:34,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 05:21:34,099 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-28 05:21:34,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:34,100 INFO L85 PathProgramCache]: Analyzing trace with hash 491598, now seen corresponding path program 1 times [2024-11-28 05:21:34,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:34,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006604751] [2024-11-28 05:21:34,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:34,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:34,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:21:34,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:21:34,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006604751] [2024-11-28 05:21:34,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006604751] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:21:34,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:21:34,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 05:21:34,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20742819] [2024-11-28 05:21:34,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:21:34,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:21:34,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:21:34,258 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:21:34,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:21:34,283 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 97 [2024-11-28 05:21:34,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 77 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:21:34,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:21:34,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 97 [2024-11-28 05:21:34,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:21:36,616 INFO L124 PetriNetUnfolderBase]: 7226/14592 cut-off events. [2024-11-28 05:21:36,617 INFO L125 PetriNetUnfolderBase]: For 186/199 co-relation queries the response was YES. [2024-11-28 05:21:36,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26304 conditions, 14592 events. 7226/14592 cut-off events. For 186/199 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 118280 event pairs, 5570 based on Foata normal form. 1/13963 useless extension candidates. Maximal degree in co-relation 24406. Up to 11355 conditions per place. [2024-11-28 05:21:36,712 INFO L140 encePairwiseOnDemand]: 93/97 looper letters, 64 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2024-11-28 05:21:36,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 93 transitions, 338 flow [2024-11-28 05:21:36,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:21:36,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 05:21:36,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2024-11-28 05:21:36,716 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5326460481099656 [2024-11-28 05:21:36,717 INFO L175 Difference]: Start difference. First operand has 83 places, 77 transitions, 174 flow. Second operand 3 states and 155 transitions. [2024-11-28 05:21:36,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 93 transitions, 338 flow [2024-11-28 05:21:36,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 93 transitions, 334 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 05:21:36,760 INFO L231 Difference]: Finished difference. Result has 83 places, 78 transitions, 184 flow [2024-11-28 05:21:36,761 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=83, PETRI_TRANSITIONS=78} [2024-11-28 05:21:36,763 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, -1 predicate places. [2024-11-28 05:21:36,764 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 78 transitions, 184 flow [2024-11-28 05:21:36,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:21:36,765 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:21:36,765 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-28 05:21:36,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 05:21:36,766 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-28 05:21:36,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:36,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1250452198, now seen corresponding path program 1 times [2024-11-28 05:21:36,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:36,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688460274] [2024-11-28 05:21:36,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:36,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:37,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:21:37,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:21:37,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688460274] [2024-11-28 05:21:37,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688460274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:21:37,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:21:37,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:21:37,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998992685] [2024-11-28 05:21:37,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:21:37,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:21:37,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:21:37,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:21:37,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:21:37,036 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 97 [2024-11-28 05:21:37,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 78 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:21:37,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:21:37,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 97 [2024-11-28 05:21:37,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:21:39,081 INFO L124 PetriNetUnfolderBase]: 7212/14624 cut-off events. [2024-11-28 05:21:39,082 INFO L125 PetriNetUnfolderBase]: For 591/591 co-relation queries the response was YES. [2024-11-28 05:21:39,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26772 conditions, 14624 events. 7212/14624 cut-off events. For 591/591 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 124615 event pairs, 0 based on Foata normal form. 15/14259 useless extension candidates. Maximal degree in co-relation 1799. Up to 10833 conditions per place. [2024-11-28 05:21:39,156 INFO L140 encePairwiseOnDemand]: 93/97 looper letters, 92 selfloop transitions, 4 changer transitions 0/123 dead transitions. [2024-11-28 05:21:39,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 123 transitions, 468 flow [2024-11-28 05:21:39,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:21:39,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:21:39,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 213 transitions. [2024-11-28 05:21:39,159 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5489690721649485 [2024-11-28 05:21:39,159 INFO L175 Difference]: Start difference. First operand has 83 places, 78 transitions, 184 flow. Second operand 4 states and 213 transitions. [2024-11-28 05:21:39,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 123 transitions, 468 flow [2024-11-28 05:21:39,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 123 transitions, 466 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 05:21:39,165 INFO L231 Difference]: Finished difference. Result has 86 places, 79 transitions, 201 flow [2024-11-28 05:21:39,165 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=201, PETRI_PLACES=86, PETRI_TRANSITIONS=79} [2024-11-28 05:21:39,166 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 2 predicate places. [2024-11-28 05:21:39,168 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 79 transitions, 201 flow [2024-11-28 05:21:39,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:21:39,168 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:21:39,169 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2024-11-28 05:21:39,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 05:21:39,169 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-28 05:21:39,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:39,171 INFO L85 PathProgramCache]: Analyzing trace with hash -927668155, now seen corresponding path program 1 times [2024-11-28 05:21:39,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:39,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134159595] [2024-11-28 05:21:39,172 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:39,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:39,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:39,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:21:39,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:21:39,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134159595] [2024-11-28 05:21:39,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134159595] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:21:39,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:21:39,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:21:39,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977929684] [2024-11-28 05:21:39,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:21:39,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:21:39,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:21:39,467 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:21:39,467 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:21:39,516 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 97 [2024-11-28 05:21:39,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 79 transitions, 201 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:21:39,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:21:39,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 97 [2024-11-28 05:21:39,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:21:41,655 INFO L124 PetriNetUnfolderBase]: 7226/14311 cut-off events. [2024-11-28 05:21:41,655 INFO L125 PetriNetUnfolderBase]: For 1383/1383 co-relation queries the response was YES. [2024-11-28 05:21:41,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26971 conditions, 14311 events. 7226/14311 cut-off events. For 1383/1383 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 115887 event pairs, 1584 based on Foata normal form. 225/14302 useless extension candidates. Maximal degree in co-relation 1724. Up to 8898 conditions per place. [2024-11-28 05:21:41,756 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 148 selfloop transitions, 6 changer transitions 0/180 dead transitions. [2024-11-28 05:21:41,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 180 transitions, 707 flow [2024-11-28 05:21:41,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:21:41,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 05:21:41,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 323 transitions. [2024-11-28 05:21:41,759 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5549828178694158 [2024-11-28 05:21:41,759 INFO L175 Difference]: Start difference. First operand has 86 places, 79 transitions, 201 flow. Second operand 6 states and 323 transitions. [2024-11-28 05:21:41,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 180 transitions, 707 flow [2024-11-28 05:21:41,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 180 transitions, 698 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-28 05:21:41,766 INFO L231 Difference]: Finished difference. Result has 89 places, 79 transitions, 205 flow [2024-11-28 05:21:41,767 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=205, PETRI_PLACES=89, PETRI_TRANSITIONS=79} [2024-11-28 05:21:41,767 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 5 predicate places. [2024-11-28 05:21:41,768 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 79 transitions, 205 flow [2024-11-28 05:21:41,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:21:41,768 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:21:41,769 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2024-11-28 05:21:41,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 05:21:41,769 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-28 05:21:41,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:41,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1307058755, now seen corresponding path program 1 times [2024-11-28 05:21:41,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:41,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004343042] [2024-11-28 05:21:41,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:41,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:41,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 05:21:41,800 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 05:21:41,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 05:21:41,824 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 05:21:41,825 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 05:21:41,825 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-28 05:21:41,825 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-11-28 05:21:41,825 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-11-28 05:21:41,826 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 7 remaining) [2024-11-28 05:21:41,826 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-11-28 05:21:41,826 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-11-28 05:21:41,826 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-28 05:21:41,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 05:21:41,827 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-28 05:21:41,828 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 05:21:41,828 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-28 05:21:41,874 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-28 05:21:41,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 126 transitions, 279 flow [2024-11-28 05:21:41,919 INFO L124 PetriNetUnfolderBase]: 42/276 cut-off events. [2024-11-28 05:21:41,919 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-28 05:21:41,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 276 events. 42/276 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1272 event pairs, 1 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 190. Up to 12 conditions per place. [2024-11-28 05:21:41,921 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 126 transitions, 279 flow [2024-11-28 05:21:41,924 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 108 places, 126 transitions, 279 flow [2024-11-28 05:21:41,925 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:21:41,926 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;@32ed9333, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:21:41,926 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-28 05:21:41,928 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 05:21:41,928 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-28 05:21:41,929 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 05:21:41,929 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:21:41,929 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 05:21:41,929 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-28 05:21:41,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:41,930 INFO L85 PathProgramCache]: Analyzing trace with hash 616715, now seen corresponding path program 1 times [2024-11-28 05:21:41,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:41,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243016670] [2024-11-28 05:21:41,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:41,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:41,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:41,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:21:41,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:21:41,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243016670] [2024-11-28 05:21:41,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243016670] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:21:41,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:21:41,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 05:21:41,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815540581] [2024-11-28 05:21:41,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:21:41,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:21:41,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:21:41,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:21:41,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:21:41,998 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 126 [2024-11-28 05:21:41,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 126 transitions, 279 flow. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:21:41,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:21:41,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 126 [2024-11-28 05:21:41,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:22:09,984 INFO L124 PetriNetUnfolderBase]: 189484/306048 cut-off events. [2024-11-28 05:22:09,984 INFO L125 PetriNetUnfolderBase]: For 2417/2417 co-relation queries the response was YES. [2024-11-28 05:22:10,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 568596 conditions, 306048 events. 189484/306048 cut-off events. For 2417/2417 co-relation queries the response was YES. Maximal size of possible extension queue 5242. Compared 2894457 event pairs, 167707 based on Foata normal form. 63279/360063 useless extension candidates. Maximal degree in co-relation 228786. Up to 231132 conditions per place. [2024-11-28 05:22:11,765 INFO L140 encePairwiseOnDemand]: 100/126 looper letters, 107 selfloop transitions, 2 changer transitions 1/143 dead transitions. [2024-11-28 05:22:11,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 143 transitions, 533 flow [2024-11-28 05:22:11,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:22:11,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 05:22:11,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 251 transitions. [2024-11-28 05:22:11,767 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6640211640211641 [2024-11-28 05:22:11,767 INFO L175 Difference]: Start difference. First operand has 108 places, 126 transitions, 279 flow. Second operand 3 states and 251 transitions. [2024-11-28 05:22:11,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 143 transitions, 533 flow [2024-11-28 05:22:11,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 143 transitions, 533 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 05:22:11,773 INFO L231 Difference]: Finished difference. Result has 107 places, 100 transitions, 231 flow [2024-11-28 05:22:11,773 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=231, PETRI_PLACES=107, PETRI_TRANSITIONS=100} [2024-11-28 05:22:11,774 INFO L279 CegarLoopForPetriNet]: 108 programPoint places, -1 predicate places. [2024-11-28 05:22:11,774 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 100 transitions, 231 flow [2024-11-28 05:22:11,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:22:11,774 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:22:11,775 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 05:22:11,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 05:22:11,775 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-28 05:22:11,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:22:11,776 INFO L85 PathProgramCache]: Analyzing trace with hash 616716, now seen corresponding path program 1 times [2024-11-28 05:22:11,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:22:11,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954997182] [2024-11-28 05:22:11,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:22:11,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:22:11,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:22:11,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:22:11,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:22:11,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954997182] [2024-11-28 05:22:11,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954997182] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:22:11,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:22:11,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 05:22:11,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844844113] [2024-11-28 05:22:11,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:22:11,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:22:11,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:22:11,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:22:11,861 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:22:11,877 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 126 [2024-11-28 05:22:11,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 100 transitions, 231 flow. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:22:11,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:22:11,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 126 [2024-11-28 05:22:11,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand