/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_thin002_power.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 01:17:07,217 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 01:17:07,292 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 01:17:07,297 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 01:17:07,298 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 01:17:07,298 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 01:17:07,299 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 01:17:07,332 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 01:17:07,333 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 01:17:07,337 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 01:17:07,337 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 01:17:07,338 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 01:17:07,339 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 01:17:07,340 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 01:17:07,340 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 01:17:07,340 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 01:17:07,341 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 01:17:07,341 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 01:17:07,341 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 01:17:07,341 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 01:17:07,342 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 01:17:07,342 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 01:17:07,342 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 01:17:07,342 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 01:17:07,343 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 01:17:07,343 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 01:17:07,343 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 01:17:07,344 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 01:17:07,344 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 01:17:07,344 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 01:17:07,345 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 01:17:07,345 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 01:17:07,345 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 01:17:07,346 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 01:17:07,346 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 01:17:07,346 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 01:17:07,346 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 01:17:07,346 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 01:17:07,346 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 01:17:07,347 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 01:17:07,347 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 01:17:07,347 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-04 01:17:07,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 01:17:07,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 01:17:07,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 01:17:07,631 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 01:17:07,631 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 01:17:07,632 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_thin002_power.oepc_bound2.i [2023-08-04 01:17:08,844 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 01:17:09,083 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 01:17:09,083 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_thin002_power.oepc_bound2.i [2023-08-04 01:17:09,099 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0adc81f97/ddcb3a0e51924a4eb1820c6bc5143b53/FLAG8f27008bc [2023-08-04 01:17:09,112 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0adc81f97/ddcb3a0e51924a4eb1820c6bc5143b53 [2023-08-04 01:17:09,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 01:17:09,116 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 01:17:09,117 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 01:17:09,117 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 01:17:09,120 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 01:17:09,121 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 01:17:09" (1/1) ... [2023-08-04 01:17:09,122 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@736448ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:17:09, skipping insertion in model container [2023-08-04 01:17:09,122 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 01:17:09" (1/1) ... [2023-08-04 01:17:09,185 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 01:17:09,320 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_thin002_power.oepc_bound2.i[995,1008] [2023-08-04 01:17:09,464 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 01:17:09,484 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 01:17:09,497 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_thin002_power.oepc_bound2.i[995,1008] [2023-08-04 01:17:09,521 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-04 01:17:09,522 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-04 01:17:09,589 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 01:17:09,630 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 01:17:09,631 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 01:17:09,637 INFO L206 MainTranslator]: Completed translation [2023-08-04 01:17:09,638 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:17:09 WrapperNode [2023-08-04 01:17:09,638 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 01:17:09,639 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 01:17:09,639 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 01:17:09,639 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 01:17:09,645 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:17:09" (1/1) ... [2023-08-04 01:17:09,671 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:17:09" (1/1) ... [2023-08-04 01:17:09,692 INFO L138 Inliner]: procedures = 177, calls = 82, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 187 [2023-08-04 01:17:09,692 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 01:17:09,693 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 01:17:09,693 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 01:17:09,693 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 01:17:09,702 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:17:09" (1/1) ... [2023-08-04 01:17:09,702 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:17:09" (1/1) ... [2023-08-04 01:17:09,706 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:17:09" (1/1) ... [2023-08-04 01:17:09,706 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:17:09" (1/1) ... [2023-08-04 01:17:09,718 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:17:09" (1/1) ... [2023-08-04 01:17:09,722 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:17:09" (1/1) ... [2023-08-04 01:17:09,725 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:17:09" (1/1) ... [2023-08-04 01:17:09,727 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:17:09" (1/1) ... [2023-08-04 01:17:09,731 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 01:17:09,732 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 01:17:09,732 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 01:17:09,732 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 01:17:09,733 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:17:09" (1/1) ... [2023-08-04 01:17:09,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 01:17:09,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:17:09,763 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-04 01:17:09,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-04 01:17:09,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 01:17:09,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 01:17:09,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 01:17:09,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 01:17:09,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 01:17:09,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 01:17:09,804 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 01:17:09,804 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 01:17:09,804 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 01:17:09,804 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 01:17:09,804 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 01:17:09,804 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 01:17:09,804 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-04 01:17:09,804 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-04 01:17:09,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 01:17:09,805 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 01:17:09,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 01:17:09,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 01:17:09,807 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 01:17:09,941 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 01:17:09,942 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 01:17:10,395 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 01:17:10,647 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 01:17:10,648 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-04 01:17:10,651 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 01:17:10 BoogieIcfgContainer [2023-08-04 01:17:10,651 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 01:17:10,654 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 01:17:10,655 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 01:17:10,659 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 01:17:10,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 01:17:09" (1/3) ... [2023-08-04 01:17:10,660 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6e82eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 01:17:10, skipping insertion in model container [2023-08-04 01:17:10,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:17:09" (2/3) ... [2023-08-04 01:17:10,661 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6e82eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 01:17:10, skipping insertion in model container [2023-08-04 01:17:10,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 01:17:10" (3/3) ... [2023-08-04 01:17:10,662 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_thin002_power.oepc_bound2.i [2023-08-04 01:17:10,669 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 01:17:10,676 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 01:17:10,677 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 01:17:10,677 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 01:17:10,760 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 01:17:10,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 175 transitions, 370 flow [2023-08-04 01:17:11,087 INFO L124 PetriNetUnfolderBase]: 62/938 cut-off events. [2023-08-04 01:17:11,088 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 01:17:11,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 988 conditions, 938 events. 62/938 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5560 event pairs, 0 based on Foata normal form. 0/830 useless extension candidates. Maximal degree in co-relation 567. Up to 32 conditions per place. [2023-08-04 01:17:11,101 INFO L82 GeneralOperation]: Start removeDead. Operand has 178 places, 175 transitions, 370 flow [2023-08-04 01:17:11,109 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 150 places, 144 transitions, 308 flow [2023-08-04 01:17:11,112 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 01:17:11,132 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 150 places, 144 transitions, 308 flow [2023-08-04 01:17:11,136 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 150 places, 144 transitions, 308 flow [2023-08-04 01:17:11,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 144 transitions, 308 flow [2023-08-04 01:17:11,184 INFO L124 PetriNetUnfolderBase]: 14/442 cut-off events. [2023-08-04 01:17:11,184 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 01:17:11,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 442 events. 14/442 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1873 event pairs, 0 based on Foata normal form. 0/414 useless extension candidates. Maximal degree in co-relation 319. Up to 16 conditions per place. [2023-08-04 01:17:11,192 INFO L119 LiptonReduction]: Number of co-enabled transitions 2048 [2023-08-04 01:17:18,029 INFO L134 LiptonReduction]: Checked pairs total: 4965 [2023-08-04 01:17:18,029 INFO L136 LiptonReduction]: Total number of compositions: 118 [2023-08-04 01:17:18,040 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 01:17:18,046 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@476829c0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 01:17:18,046 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 01:17:18,050 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 01:17:18,051 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-08-04 01:17:18,051 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 01:17:18,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:17:18,051 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 01:17:18,052 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:17:18,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:17:18,056 INFO L85 PathProgramCache]: Analyzing trace with hash -487762865, now seen corresponding path program 1 times [2023-08-04 01:17:18,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:17:18,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946823207] [2023-08-04 01:17:18,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:17:18,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:17:18,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 01:17:18,202 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 01:17:18,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 01:17:18,286 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 01:17:18,288 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 01:17:18,289 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 01:17:18,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 01:17:18,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 01:17:18,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 01:17:18,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 01:17:18,292 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 01:17:18,298 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (1/2) [2023-08-04 01:17:18,299 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 01:17:18,299 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 01:17:18,355 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 01:17:18,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 204 transitions, 456 flow [2023-08-04 01:17:19,020 INFO L124 PetriNetUnfolderBase]: 282/4264 cut-off events. [2023-08-04 01:17:19,020 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 01:17:19,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4553 conditions, 4264 events. 282/4264 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 40665 event pairs, 0 based on Foata normal form. 0/3781 useless extension candidates. Maximal degree in co-relation 3086. Up to 162 conditions per place. [2023-08-04 01:17:19,041 INFO L82 GeneralOperation]: Start removeDead. Operand has 215 places, 204 transitions, 456 flow [2023-08-04 01:17:19,046 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 187 places, 173 transitions, 394 flow [2023-08-04 01:17:19,046 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 01:17:19,046 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 187 places, 173 transitions, 394 flow [2023-08-04 01:17:19,046 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 187 places, 173 transitions, 394 flow [2023-08-04 01:17:19,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 187 places, 173 transitions, 394 flow [2023-08-04 01:17:19,249 INFO L124 PetriNetUnfolderBase]: 39/1753 cut-off events. [2023-08-04 01:17:19,250 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 01:17:19,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2042 conditions, 1753 events. 39/1753 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 13451 event pairs, 0 based on Foata normal form. 0/1675 useless extension candidates. Maximal degree in co-relation 1412. Up to 81 conditions per place. [2023-08-04 01:17:19,290 INFO L119 LiptonReduction]: Number of co-enabled transitions 5540 [2023-08-04 01:17:26,970 INFO L134 LiptonReduction]: Checked pairs total: 17560 [2023-08-04 01:17:26,971 INFO L136 LiptonReduction]: Total number of compositions: 126 [2023-08-04 01:17:26,974 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 01:17:26,975 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@476829c0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 01:17:26,975 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 01:17:26,984 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 01:17:26,984 INFO L124 PetriNetUnfolderBase]: 0/89 cut-off events. [2023-08-04 01:17:26,984 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-04 01:17:26,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:17:26,985 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:17:26,985 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:17:26,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:17:26,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1922943777, now seen corresponding path program 1 times [2023-08-04 01:17:26,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:17:26,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185478454] [2023-08-04 01:17:26,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:17:26,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:17:27,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:17:27,146 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 01:17:27,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:17:27,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185478454] [2023-08-04 01:17:27,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185478454] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:17:27,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 01:17:27,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 01:17:27,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250683225] [2023-08-04 01:17:27,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:17:27,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:17:27,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:17:27,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:17:27,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 01:17:27,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 330 [2023-08-04 01:17:27,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 53 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:17:27,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:17:27,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 330 [2023-08-04 01:17:27,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:18:34,731 INFO L124 PetriNetUnfolderBase]: 374764/501068 cut-off events. [2023-08-04 01:18:34,731 INFO L125 PetriNetUnfolderBase]: For 28824/28824 co-relation queries the response was YES. [2023-08-04 01:18:36,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1001501 conditions, 501068 events. 374764/501068 cut-off events. For 28824/28824 co-relation queries the response was YES. Maximal size of possible extension queue 12182. Compared 3760040 event pairs, 315054 based on Foata normal form. 0/496391 useless extension candidates. Maximal degree in co-relation 294020. Up to 464330 conditions per place. [2023-08-04 01:18:38,934 INFO L140 encePairwiseOnDemand]: 327/330 looper letters, 39 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-08-04 01:18:38,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 57 transitions, 244 flow [2023-08-04 01:18:38,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:18:38,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:18:38,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 579 transitions. [2023-08-04 01:18:38,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5848484848484848 [2023-08-04 01:18:38,949 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 579 transitions. [2023-08-04 01:18:38,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 579 transitions. [2023-08-04 01:18:38,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:18:38,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 579 transitions. [2023-08-04 01:18:38,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:18:38,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:18:38,971 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:18:38,973 INFO L175 Difference]: Start difference. First operand has 70 places, 53 transitions, 154 flow. Second operand 3 states and 579 transitions. [2023-08-04 01:18:38,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 57 transitions, 244 flow [2023-08-04 01:18:39,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 57 transitions, 236 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-04 01:18:39,022 INFO L231 Difference]: Finished difference. Result has 73 places, 54 transitions, 158 flow [2023-08-04 01:18:39,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=73, PETRI_TRANSITIONS=54} [2023-08-04 01:18:39,028 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 3 predicate places. [2023-08-04 01:18:39,029 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 54 transitions, 158 flow [2023-08-04 01:18:39,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:18:39,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:18:39,029 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-04 01:18:39,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-04 01:18:39,030 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:18:39,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:18:39,030 INFO L85 PathProgramCache]: Analyzing trace with hash 2078220012, now seen corresponding path program 1 times [2023-08-04 01:18:39,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:18:39,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443130066] [2023-08-04 01:18:39,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:18:39,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:18:39,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:18:39,152 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 01:18:39,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:18:39,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443130066] [2023-08-04 01:18:39,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443130066] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:18:39,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21626723] [2023-08-04 01:18:39,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:18:39,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:18:39,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:18:39,157 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 01:18:39,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 01:18:39,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:18:39,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 01:18:39,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:18:39,370 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 01:18:39,371 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:18:39,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21626723] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:18:39,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:18:39,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-04 01:18:39,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098511036] [2023-08-04 01:18:39,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:18:39,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:18:39,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:18:39,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:18:39,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 01:18:39,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 330 [2023-08-04 01:18:39,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 54 transitions, 158 flow. Second operand has 5 states, 5 states have (on average 179.6) internal successors, (898), 5 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:18:39,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:18:39,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 330 [2023-08-04 01:18:39,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:19:48,016 INFO L124 PetriNetUnfolderBase]: 374752/501029 cut-off events. [2023-08-04 01:19:48,017 INFO L125 PetriNetUnfolderBase]: For 25911/25911 co-relation queries the response was YES. [2023-08-04 01:19:50,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 998549 conditions, 501029 events. 374752/501029 cut-off events. For 25911/25911 co-relation queries the response was YES. Maximal size of possible extension queue 12233. Compared 3754637 event pairs, 270276 based on Foata normal form. 9/492554 useless extension candidates. Maximal degree in co-relation 352739. Up to 464283 conditions per place. [2023-08-04 01:19:53,643 INFO L140 encePairwiseOnDemand]: 326/330 looper letters, 42 selfloop transitions, 4 changer transitions 0/61 dead transitions. [2023-08-04 01:19:53,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 61 transitions, 264 flow [2023-08-04 01:19:53,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 01:19:53,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 01:19:53,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 937 transitions. [2023-08-04 01:19:53,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5678787878787879 [2023-08-04 01:19:53,653 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 937 transitions. [2023-08-04 01:19:53,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 937 transitions. [2023-08-04 01:19:53,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:19:53,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 937 transitions. [2023-08-04 01:19:53,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 187.4) internal successors, (937), 5 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:19:53,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 330.0) internal successors, (1980), 6 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:19:53,688 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 330.0) internal successors, (1980), 6 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:19:53,688 INFO L175 Difference]: Start difference. First operand has 73 places, 54 transitions, 158 flow. Second operand 5 states and 937 transitions. [2023-08-04 01:19:53,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 61 transitions, 264 flow [2023-08-04 01:19:53,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 61 transitions, 261 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 01:19:53,690 INFO L231 Difference]: Finished difference. Result has 76 places, 54 transitions, 172 flow [2023-08-04 01:19:53,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=76, PETRI_TRANSITIONS=54} [2023-08-04 01:19:53,691 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 6 predicate places. [2023-08-04 01:19:53,692 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 54 transitions, 172 flow [2023-08-04 01:19:53,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 179.6) internal successors, (898), 5 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:19:53,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:19:53,692 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:19:53,725 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-04 01:19:53,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:19:53,916 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:19:53,916 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:19:53,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1940001744, now seen corresponding path program 1 times [2023-08-04 01:19:53,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:19:53,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862564574] [2023-08-04 01:19:53,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:19:53,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:19:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:19:54,037 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 01:19:54,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:19:54,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862564574] [2023-08-04 01:19:54,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862564574] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:19:54,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006152358] [2023-08-04 01:19:54,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:19:54,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:19:54,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:19:54,049 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 01:19:54,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 01:19:54,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:19:54,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 01:19:54,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:19:54,213 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 01:19:54,213 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:19:54,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006152358] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:19:54,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:19:54,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 01:19:54,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465524389] [2023-08-04 01:19:54,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:19:54,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:19:54,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:19:54,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:19:54,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:19:54,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 330 [2023-08-04 01:19:54,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 54 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 182.33333333333334) internal successors, (547), 3 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:19:54,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:19:54,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 330 [2023-08-04 01:19:54,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand