/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -tc ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis PETRI_NET -i ../../../trunk/examples/svcomp/pthread-ext/43_NetBSD_sysmon_power_sliced-pthread.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 19:22:59,794 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 19:22:59,845 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2025-04-13 19:22:59,848 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 19:22:59,849 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 19:22:59,866 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 19:22:59,866 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 19:22:59,866 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 19:22:59,866 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 19:22:59,866 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 19:22:59,866 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 19:22:59,867 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 19:22:59,867 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 19:22:59,867 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 19:22:59,867 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 19:22:59,867 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 19:22:59,867 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 19:22:59,867 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 19:22:59,867 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 19:22:59,867 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 19:22:59,867 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 19:22:59,867 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 19:22:59,869 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 19:22:59,869 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 19:22:59,869 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 19:22:59,869 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 19:22:59,869 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 19:22:59,869 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 19:22:59,869 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 19:22:59,869 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:22:59,870 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:22:59,870 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:22:59,870 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:22:59,870 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 19:22:59,870 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:22:59,870 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:22:59,870 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:22:59,870 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:22:59,870 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 19:22:59,870 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 19:22:59,870 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 19:22:59,870 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 19:22:59,870 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 19:22:59,870 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 19:22:59,870 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 19:22:59,871 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 19:22:59,871 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 19:22:59,871 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Automaton type used in concurrency analysis -> PETRI_NET [2025-04-13 19:23:00,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 19:23:00,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 19:23:00,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 19:23:00,098 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 19:23:00,098 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 19:23:00,099 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/43_NetBSD_sysmon_power_sliced-pthread.i [2025-04-13 19:23:01,370 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79ddba3d7/557c1005e2ea42beaa263b67e62ff73b/FLAG006222b2e [2025-04-13 19:23:01,679 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 19:23:01,680 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/43_NetBSD_sysmon_power_sliced-pthread.i [2025-04-13 19:23:01,694 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79ddba3d7/557c1005e2ea42beaa263b67e62ff73b/FLAG006222b2e [2025-04-13 19:23:02,421 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79ddba3d7/557c1005e2ea42beaa263b67e62ff73b [2025-04-13 19:23:02,423 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 19:23:02,424 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 19:23:02,425 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 19:23:02,425 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 19:23:02,430 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 19:23:02,431 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:23:02" (1/1) ... [2025-04-13 19:23:02,431 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dcd34a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:23:02, skipping insertion in model container [2025-04-13 19:23:02,431 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:23:02" (1/1) ... [2025-04-13 19:23:02,457 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 19:23:02,753 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/43_NetBSD_sysmon_power_sliced-pthread.i[30535,30548] [2025-04-13 19:23:02,762 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/43_NetBSD_sysmon_power_sliced-pthread.i[30687,30700] [2025-04-13 19:23:02,769 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/43_NetBSD_sysmon_power_sliced-pthread.i[31414,31427] [2025-04-13 19:23:02,771 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/43_NetBSD_sysmon_power_sliced-pthread.i[31599,31612] [2025-04-13 19:23:02,776 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/43_NetBSD_sysmon_power_sliced-pthread.i[31752,31765] [2025-04-13 19:23:02,784 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/43_NetBSD_sysmon_power_sliced-pthread.i[32141,32154] [2025-04-13 19:23:02,786 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/43_NetBSD_sysmon_power_sliced-pthread.i[32327,32340] [2025-04-13 19:23:02,793 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/43_NetBSD_sysmon_power_sliced-pthread.i[32488,32501] [2025-04-13 19:23:02,794 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/43_NetBSD_sysmon_power_sliced-pthread.i[32646,32659] [2025-04-13 19:23:02,798 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/43_NetBSD_sysmon_power_sliced-pthread.i[32802,32815] [2025-04-13 19:23:02,800 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/43_NetBSD_sysmon_power_sliced-pthread.i[33149,33162] [2025-04-13 19:23:02,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:23:02,833 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 19:23:02,892 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/43_NetBSD_sysmon_power_sliced-pthread.i[30535,30548] [2025-04-13 19:23:02,893 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/43_NetBSD_sysmon_power_sliced-pthread.i[30687,30700] [2025-04-13 19:23:02,895 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/43_NetBSD_sysmon_power_sliced-pthread.i[31414,31427] [2025-04-13 19:23:02,900 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/43_NetBSD_sysmon_power_sliced-pthread.i[31599,31612] [2025-04-13 19:23:02,902 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/43_NetBSD_sysmon_power_sliced-pthread.i[31752,31765] [2025-04-13 19:23:02,903 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/43_NetBSD_sysmon_power_sliced-pthread.i[32141,32154] [2025-04-13 19:23:02,907 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/43_NetBSD_sysmon_power_sliced-pthread.i[32327,32340] [2025-04-13 19:23:02,908 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/43_NetBSD_sysmon_power_sliced-pthread.i[32488,32501] [2025-04-13 19:23:02,908 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/43_NetBSD_sysmon_power_sliced-pthread.i[32646,32659] [2025-04-13 19:23:02,909 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/43_NetBSD_sysmon_power_sliced-pthread.i[32802,32815] [2025-04-13 19:23:02,909 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/43_NetBSD_sysmon_power_sliced-pthread.i[33149,33162] [2025-04-13 19:23:02,916 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:23:02,956 INFO L204 MainTranslator]: Completed translation [2025-04-13 19:23:02,957 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:23:02 WrapperNode [2025-04-13 19:23:02,958 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 19:23:02,958 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 19:23:02,958 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 19:23:02,958 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 19:23:02,962 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:23:02" (1/1) ... [2025-04-13 19:23:02,981 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:23:02" (1/1) ... [2025-04-13 19:23:03,013 INFO L138 Inliner]: procedures = 173, calls = 51, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 446 [2025-04-13 19:23:03,017 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 19:23:03,017 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 19:23:03,017 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 19:23:03,017 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 19:23:03,024 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:23:02" (1/1) ... [2025-04-13 19:23:03,024 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:23:02" (1/1) ... [2025-04-13 19:23:03,032 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:23:02" (1/1) ... [2025-04-13 19:23:03,058 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2025-04-13 19:23:03,059 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:23:02" (1/1) ... [2025-04-13 19:23:03,059 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:23:02" (1/1) ... [2025-04-13 19:23:03,069 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:23:02" (1/1) ... [2025-04-13 19:23:03,074 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:23:02" (1/1) ... [2025-04-13 19:23:03,081 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:23:02" (1/1) ... [2025-04-13 19:23:03,082 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:23:02" (1/1) ... [2025-04-13 19:23:03,083 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:23:02" (1/1) ... [2025-04-13 19:23:03,098 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 19:23:03,099 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 19:23:03,099 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 19:23:03,099 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 19:23:03,100 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:23:02" (1/1) ... [2025-04-13 19:23:03,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:23:03,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 19:23:03,129 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-13 19:23:03,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-13 19:23:03,151 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-04-13 19:23:03,151 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-04-13 19:23:03,151 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-13 19:23:03,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 19:23:03,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 19:23:03,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-13 19:23:03,151 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-13 19:23:03,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 19:23:03,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 19:23:03,152 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 19:23:03,268 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 19:23:03,269 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 19:23:03,633 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 19:23:03,634 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 19:23:03,634 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 19:23:04,411 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 19:23:04,413 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 19:23:04,421 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 19:23:04,430 WARN L179 LargeBlockEncoding]: Complex 2:3 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 19:23:04,441 WARN L179 LargeBlockEncoding]: Complex 12:14 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 19:23:04,788 INFO L313 CfgBuilder]: Removed 3 assume(true) statements. [2025-04-13 19:23:04,789 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:23:04 BoogieIcfgContainer [2025-04-13 19:23:04,789 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 19:23:04,791 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 19:23:04,791 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 19:23:04,795 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 19:23:04,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 07:23:02" (1/3) ... [2025-04-13 19:23:04,795 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5263f808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:23:04, skipping insertion in model container [2025-04-13 19:23:04,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:23:02" (2/3) ... [2025-04-13 19:23:04,796 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5263f808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:23:04, skipping insertion in model container [2025-04-13 19:23:04,796 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:23:04" (3/3) ... [2025-04-13 19:23:04,797 INFO L128 eAbstractionObserver]: Analyzing ICFG 43_NetBSD_sysmon_power_sliced-pthread.i [2025-04-13 19:23:04,809 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 19:23:04,812 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 43_NetBSD_sysmon_power_sliced-pthread.i that has 2 procedures, 68 locations, 218 edges, 1 initial locations, 4 loop locations, and 11 error locations. [2025-04-13 19:23:04,812 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 19:23:05,469 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-13 19:23:05,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 233 transitions, 470 flow [2025-04-13 19:23:05,675 INFO L116 PetriNetUnfolderBase]: 164/235 cut-off events. [2025-04-13 19:23:05,676 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 19:23:05,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 235 events. 164/235 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 588 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 230. Up to 14 conditions per place. [2025-04-13 19:23:05,678 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 233 transitions, 470 flow [2025-04-13 19:23:05,686 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 233 transitions, 470 flow [2025-04-13 19:23:05,694 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:23:05,704 INFO L340 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=LoopHeads, 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;@5c34edb8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:23:05,704 INFO L341 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2025-04-13 19:23:05,723 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:23:05,723 INFO L116 PetriNetUnfolderBase]: 11/26 cut-off events. [2025-04-13 19:23:05,723 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 19:23:05,723 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:23:05,724 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-04-13 19:23:05,724 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err5ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err5ASSERT_VIOLATIONERROR_FUNCTION, thr1Err6ASSERT_VIOLATIONERROR_FUNCTION, thr1Err10ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2025-04-13 19:23:05,729 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:23:05,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1365483303, now seen corresponding path program 1 times [2025-04-13 19:23:05,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:23:05,736 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411898855] [2025-04-13 19:23:05,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:23:05,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:23:06,023 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-13 19:23:06,059 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-13 19:23:06,060 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:23:06,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:23:06,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:23:06,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:23:06,134 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411898855] [2025-04-13 19:23:06,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411898855] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:23:06,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:23:06,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-13 19:23:06,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477224017] [2025-04-13 19:23:06,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:23:06,140 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-04-13 19:23:06,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:23:06,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-04-13 19:23:06,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-04-13 19:23:06,158 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 233 [2025-04-13 19:23:06,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 233 transitions, 470 flow. Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:23:06,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:23:06,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 233 [2025-04-13 19:23:06,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:23:06,573 INFO L116 PetriNetUnfolderBase]: 289/398 cut-off events. [2025-04-13 19:23:06,573 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 19:23:06,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 798 conditions, 398 events. 289/398 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1110 event pairs, 51 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 786. Up to 396 conditions per place. [2025-04-13 19:23:06,576 INFO L140 encePairwiseOnDemand]: 175/233 looper letters, 173 selfloop transitions, 0 changer transitions 0/175 dead transitions. [2025-04-13 19:23:06,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 175 transitions, 700 flow [2025-04-13 19:23:06,577 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-13 19:23:06,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-04-13 19:23:06,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 235 transitions. [2025-04-13 19:23:06,585 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5042918454935622 [2025-04-13 19:23:06,587 INFO L175 Difference]: Start difference. First operand has 72 places, 233 transitions, 470 flow. Second operand 2 states and 235 transitions. [2025-04-13 19:23:06,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 175 transitions, 700 flow [2025-04-13 19:23:06,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 175 transitions, 700 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-04-13 19:23:06,595 INFO L231 Difference]: Finished difference. Result has 60 places, 175 transitions, 354 flow [2025-04-13 19:23:06,597 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=354, PETRI_PLACES=60, PETRI_TRANSITIONS=175} [2025-04-13 19:23:06,600 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, -12 predicate places. [2025-04-13 19:23:06,600 INFO L485 AbstractCegarLoop]: Abstraction has has 60 places, 175 transitions, 354 flow [2025-04-13 19:23:06,600 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:23:06,600 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:23:06,600 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2025-04-13 19:23:06,600 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 19:23:06,601 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err5ASSERT_VIOLATIONERROR_FUNCTION, thr1Err6ASSERT_VIOLATIONERROR_FUNCTION, thr1Err10ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2025-04-13 19:23:06,601 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:23:06,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1365476738, now seen corresponding path program 1 times [2025-04-13 19:23:06,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:23:06,601 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937201343] [2025-04-13 19:23:06,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:23:06,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:23:06,689 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-13 19:23:06,709 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-13 19:23:06,710 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:23:06,710 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:23:06,710 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 19:23:06,717 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-13 19:23:06,732 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-13 19:23:06,732 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:23:06,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:23:06,761 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 19:23:06,762 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 19:23:06,763 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2025-04-13 19:23:06,767 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (21 of 23 remaining) [2025-04-13 19:23:06,768 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONERROR_FUNCTION (20 of 23 remaining) [2025-04-13 19:23:06,768 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONERROR_FUNCTION (19 of 23 remaining) [2025-04-13 19:23:06,768 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (18 of 23 remaining) [2025-04-13 19:23:06,768 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (17 of 23 remaining) [2025-04-13 19:23:06,768 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (16 of 23 remaining) [2025-04-13 19:23:06,768 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (15 of 23 remaining) [2025-04-13 19:23:06,768 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (14 of 23 remaining) [2025-04-13 19:23:06,768 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (13 of 23 remaining) [2025-04-13 19:23:06,768 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONERROR_FUNCTION (12 of 23 remaining) [2025-04-13 19:23:06,768 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONERROR_FUNCTION (11 of 23 remaining) [2025-04-13 19:23:06,768 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (10 of 23 remaining) [2025-04-13 19:23:06,768 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONERROR_FUNCTION (9 of 23 remaining) [2025-04-13 19:23:06,768 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONERROR_FUNCTION (8 of 23 remaining) [2025-04-13 19:23:06,768 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (7 of 23 remaining) [2025-04-13 19:23:06,768 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (6 of 23 remaining) [2025-04-13 19:23:06,768 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (5 of 23 remaining) [2025-04-13 19:23:06,769 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (4 of 23 remaining) [2025-04-13 19:23:06,769 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 23 remaining) [2025-04-13 19:23:06,769 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (2 of 23 remaining) [2025-04-13 19:23:06,769 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONERROR_FUNCTION (1 of 23 remaining) [2025-04-13 19:23:06,769 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONERROR_FUNCTION (0 of 23 remaining) [2025-04-13 19:23:06,769 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 19:23:06,769 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-04-13 19:23:06,771 WARN L247 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-13 19:23:06,771 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-04-13 19:23:07,492 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-13 19:23:07,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 139 places, 462 transitions, 934 flow [2025-04-13 19:23:07,637 INFO L116 PetriNetUnfolderBase]: 328/466 cut-off events. [2025-04-13 19:23:07,637 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-13 19:23:07,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 466 events. 328/466 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1361 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 458. Up to 14 conditions per place. [2025-04-13 19:23:07,648 INFO L82 GeneralOperation]: Start removeDead. Operand has 139 places, 462 transitions, 934 flow [2025-04-13 19:23:07,667 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 139 places, 462 transitions, 934 flow [2025-04-13 19:23:07,668 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:23:07,668 INFO L340 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=LoopHeads, 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;@5c34edb8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:23:07,671 INFO L341 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2025-04-13 19:23:07,677 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:23:07,677 INFO L116 PetriNetUnfolderBase]: 11/28 cut-off events. [2025-04-13 19:23:07,677 INFO L117 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-04-13 19:23:07,677 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:23:07,677 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-04-13 19:23:07,677 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err5ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err5ASSERT_VIOLATIONERROR_FUNCTION, thr1Err6ASSERT_VIOLATIONERROR_FUNCTION, thr1Err10ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2025-04-13 19:23:07,678 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:23:07,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1806598617, now seen corresponding path program 1 times [2025-04-13 19:23:07,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:23:07,678 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557613470] [2025-04-13 19:23:07,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:23:07,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:23:07,804 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-13 19:23:07,810 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-13 19:23:07,810 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:23:07,811 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:23:07,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:23:07,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:23:07,844 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557613470] [2025-04-13 19:23:07,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557613470] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:23:07,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:23:07,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-13 19:23:07,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631953842] [2025-04-13 19:23:07,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:23:07,844 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-04-13 19:23:07,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:23:07,845 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-04-13 19:23:07,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-04-13 19:23:07,845 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 462 [2025-04-13 19:23:07,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 462 transitions, 934 flow. Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:23:07,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:23:07,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 462 [2025-04-13 19:23:07,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:23:15,633 INFO L116 PetriNetUnfolderBase]: 32997/38651 cut-off events. [2025-04-13 19:23:15,634 INFO L117 PetriNetUnfolderBase]: For 166/166 co-relation queries the response was YES. [2025-04-13 19:23:15,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77324 conditions, 38651 events. 32997/38651 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 1222. Compared 134978 event pairs, 8007 based on Foata normal form. 0/14061 useless extension candidates. Maximal degree in co-relation 14840. Up to 38512 conditions per place. [2025-04-13 19:23:15,775 INFO L140 encePairwiseOnDemand]: 347/462 looper letters, 344 selfloop transitions, 0 changer transitions 0/347 dead transitions. [2025-04-13 19:23:15,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 347 transitions, 1392 flow [2025-04-13 19:23:15,776 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-13 19:23:15,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-04-13 19:23:15,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 465 transitions. [2025-04-13 19:23:15,779 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5032467532467533 [2025-04-13 19:23:15,779 INFO L175 Difference]: Start difference. First operand has 139 places, 462 transitions, 934 flow. Second operand 2 states and 465 transitions. [2025-04-13 19:23:15,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 347 transitions, 1392 flow [2025-04-13 19:23:15,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 347 transitions, 1392 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-04-13 19:23:15,787 INFO L231 Difference]: Finished difference. Result has 115 places, 347 transitions, 704 flow [2025-04-13 19:23:15,788 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=704, PETRI_PLACES=115, PETRI_TRANSITIONS=347} [2025-04-13 19:23:15,788 INFO L279 CegarLoopForPetriNet]: 139 programPoint places, -24 predicate places. [2025-04-13 19:23:15,788 INFO L485 AbstractCegarLoop]: Abstraction has has 115 places, 347 transitions, 704 flow [2025-04-13 19:23:15,788 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:23:15,789 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:23:15,789 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1] [2025-04-13 19:23:15,789 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 19:23:15,789 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err5ASSERT_VIOLATIONERROR_FUNCTION, thr1Err6ASSERT_VIOLATIONERROR_FUNCTION, thr1Err10ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2025-04-13 19:23:15,789 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:23:15,789 INFO L85 PathProgramCache]: Analyzing trace with hash 961442706, now seen corresponding path program 1 times [2025-04-13 19:23:15,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:23:15,789 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007175714] [2025-04-13 19:23:15,789 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:23:15,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:23:15,859 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-13 19:23:15,874 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-13 19:23:15,874 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:23:15,879 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:23:15,879 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 19:23:15,882 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-13 19:23:15,891 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-13 19:23:15,891 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:23:15,891 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:23:15,913 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 19:23:15,913 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 19:23:15,913 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (33 of 34 remaining) [2025-04-13 19:23:15,913 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (32 of 34 remaining) [2025-04-13 19:23:15,913 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONERROR_FUNCTION (31 of 34 remaining) [2025-04-13 19:23:15,913 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONERROR_FUNCTION (30 of 34 remaining) [2025-04-13 19:23:15,914 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (29 of 34 remaining) [2025-04-13 19:23:15,914 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (28 of 34 remaining) [2025-04-13 19:23:15,914 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (27 of 34 remaining) [2025-04-13 19:23:15,914 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (26 of 34 remaining) [2025-04-13 19:23:15,914 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (25 of 34 remaining) [2025-04-13 19:23:15,914 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (24 of 34 remaining) [2025-04-13 19:23:15,914 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONERROR_FUNCTION (23 of 34 remaining) [2025-04-13 19:23:15,914 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONERROR_FUNCTION (22 of 34 remaining) [2025-04-13 19:23:15,914 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (21 of 34 remaining) [2025-04-13 19:23:15,914 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONERROR_FUNCTION (20 of 34 remaining) [2025-04-13 19:23:15,914 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONERROR_FUNCTION (19 of 34 remaining) [2025-04-13 19:23:15,914 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (18 of 34 remaining) [2025-04-13 19:23:15,914 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (17 of 34 remaining) [2025-04-13 19:23:15,914 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (16 of 34 remaining) [2025-04-13 19:23:15,914 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (15 of 34 remaining) [2025-04-13 19:23:15,914 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (14 of 34 remaining) [2025-04-13 19:23:15,914 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (13 of 34 remaining) [2025-04-13 19:23:15,914 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONERROR_FUNCTION (12 of 34 remaining) [2025-04-13 19:23:15,914 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONERROR_FUNCTION (11 of 34 remaining) [2025-04-13 19:23:15,914 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (10 of 34 remaining) [2025-04-13 19:23:15,914 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONERROR_FUNCTION (9 of 34 remaining) [2025-04-13 19:23:15,914 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONERROR_FUNCTION (8 of 34 remaining) [2025-04-13 19:23:15,915 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (7 of 34 remaining) [2025-04-13 19:23:15,915 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (6 of 34 remaining) [2025-04-13 19:23:15,915 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (5 of 34 remaining) [2025-04-13 19:23:15,915 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (4 of 34 remaining) [2025-04-13 19:23:15,915 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 34 remaining) [2025-04-13 19:23:15,915 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (2 of 34 remaining) [2025-04-13 19:23:15,915 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONERROR_FUNCTION (1 of 34 remaining) [2025-04-13 19:23:15,915 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONERROR_FUNCTION (0 of 34 remaining) [2025-04-13 19:23:15,915 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-13 19:23:15,915 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-04-13 19:23:15,917 WARN L247 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-13 19:23:15,917 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-04-13 19:23:16,654 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-13 19:23:16,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 691 transitions, 1400 flow [2025-04-13 19:23:16,792 INFO L116 PetriNetUnfolderBase]: 492/697 cut-off events. [2025-04-13 19:23:16,793 INFO L117 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-04-13 19:23:16,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 710 conditions, 697 events. 492/697 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2183 event pairs, 0 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 686. Up to 14 conditions per place. [2025-04-13 19:23:16,813 INFO L82 GeneralOperation]: Start removeDead. Operand has 206 places, 691 transitions, 1400 flow [2025-04-13 19:23:16,843 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 691 transitions, 1400 flow [2025-04-13 19:23:16,845 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:23:16,846 INFO L340 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=LoopHeads, 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;@5c34edb8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:23:16,846 INFO L341 AbstractCegarLoop]: Starting to check reachability of 45 error locations. [2025-04-13 19:23:16,854 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:23:16,854 INFO L116 PetriNetUnfolderBase]: 10/27 cut-off events. [2025-04-13 19:23:16,854 INFO L117 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-04-13 19:23:16,854 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:23:16,855 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-04-13 19:23:16,855 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err5ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err5ASSERT_VIOLATIONERROR_FUNCTION, thr1Err6ASSERT_VIOLATIONERROR_FUNCTION, thr1Err10ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2025-04-13 19:23:16,856 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:23:16,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1828724816, now seen corresponding path program 1 times [2025-04-13 19:23:16,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:23:16,856 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732488118] [2025-04-13 19:23:16,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:23:16,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:23:16,939 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-13 19:23:16,948 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-13 19:23:16,948 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:23:16,948 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:23:16,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:23:16,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:23:16,967 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732488118] [2025-04-13 19:23:16,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732488118] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:23:16,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:23:16,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-13 19:23:16,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471198862] [2025-04-13 19:23:16,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:23:16,967 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-04-13 19:23:16,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:23:16,967 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-04-13 19:23:16,967 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-04-13 19:23:16,968 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 691 [2025-04-13 19:23:16,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 691 transitions, 1400 flow. Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:23:16,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:23:16,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 691 [2025-04-13 19:23:16,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand