/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 PROGRAM_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix027_power.opt_pso.opt_rmo.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 05:52:58,499 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 05:52:58,585 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 05:52:58,587 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 05:52:58,588 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 05:52:58,588 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 05:52:58,588 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 05:52:58,603 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 05:52:58,604 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 05:52:58,604 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 05:52:58,604 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 05:52:58,604 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 05:52:58,605 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 05:52:58,605 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 05:52:58,605 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 05:52:58,605 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 05:52:58,606 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 05:52:58,606 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 05:52:58,606 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 05:52:58,606 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 05:52:58,607 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 05:52:58,610 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 05:52:58,610 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 05:52:58,610 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 05:52:58,612 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 05:52:58,612 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 05:52:58,612 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 05:52:58,612 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 05:52:58,612 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 05:52:58,612 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 05:52:58,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 05:52:58,613 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 05:52:58,613 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 05:52:58,613 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 05:52:58,613 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 05:52:58,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 05:52:58,614 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 05:52:58,614 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 05:52:58,614 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 05:52:58,614 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 05:52:58,614 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 05:52:58,619 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 05:52:58,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 05:52:58,827 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 05:52:58,829 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 05:52:58,829 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 05:52:58,829 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 05:52:58,830 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix027_power.opt_pso.opt_rmo.opt_bound2.i [2023-08-04 05:52:59,776 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 05:52:59,995 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 05:52:59,995 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix027_power.opt_pso.opt_rmo.opt_bound2.i [2023-08-04 05:53:00,011 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c113036a/561690e7015e430d859d3974fb12b91c/FLAGd37187f90 [2023-08-04 05:53:00,021 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c113036a/561690e7015e430d859d3974fb12b91c [2023-08-04 05:53:00,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 05:53:00,023 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 05:53:00,024 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 05:53:00,024 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 05:53:00,026 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 05:53:00,026 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 05:53:00" (1/1) ... [2023-08-04 05:53:00,027 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2adaf65f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:53:00, skipping insertion in model container [2023-08-04 05:53:00,027 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 05:53:00" (1/1) ... [2023-08-04 05:53:00,073 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 05:53:00,178 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_mix027_power.opt_pso.opt_rmo.opt_bound2.i[966,979] [2023-08-04 05:53:00,349 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 05:53:00,357 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 05:53:00,364 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_mix027_power.opt_pso.opt_rmo.opt_bound2.i[966,979] [2023-08-04 05:53:00,369 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 05:53:00,370 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 05:53:00,389 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 05:53:00,408 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 05:53:00,409 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 05:53:00,413 INFO L206 MainTranslator]: Completed translation [2023-08-04 05:53:00,415 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:53:00 WrapperNode [2023-08-04 05:53:00,415 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 05:53:00,417 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 05:53:00,417 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 05:53:00,417 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 05:53:00,421 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:53:00" (1/1) ... [2023-08-04 05:53:00,446 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:53:00" (1/1) ... [2023-08-04 05:53:00,465 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 176 [2023-08-04 05:53:00,465 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 05:53:00,466 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 05:53:00,466 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 05:53:00,466 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 05:53:00,471 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:53:00" (1/1) ... [2023-08-04 05:53:00,472 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:53:00" (1/1) ... [2023-08-04 05:53:00,474 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:53:00" (1/1) ... [2023-08-04 05:53:00,474 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:53:00" (1/1) ... [2023-08-04 05:53:00,480 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:53:00" (1/1) ... [2023-08-04 05:53:00,483 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:53:00" (1/1) ... [2023-08-04 05:53:00,484 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:53:00" (1/1) ... [2023-08-04 05:53:00,485 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:53:00" (1/1) ... [2023-08-04 05:53:00,487 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 05:53:00,488 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 05:53:00,488 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 05:53:00,519 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 05:53:00,520 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:53:00" (1/1) ... [2023-08-04 05:53:00,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 05:53:00,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:53:00,554 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 05:53:00,569 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 05:53:00,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 05:53:00,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 05:53:00,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 05:53:00,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 05:53:00,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 05:53:00,595 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 05:53:00,595 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 05:53:00,595 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 05:53:00,595 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 05:53:00,596 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 05:53:00,596 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 05:53:00,596 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-04 05:53:00,596 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-04 05:53:00,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 05:53:00,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 05:53:00,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 05:53:00,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 05:53:00,597 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 05:53:00,731 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 05:53:00,733 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 05:53:01,000 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 05:53:01,086 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 05:53:01,087 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-04 05:53:01,088 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 05:53:01 BoogieIcfgContainer [2023-08-04 05:53:01,088 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 05:53:01,090 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 05:53:01,090 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 05:53:01,093 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 05:53:01,093 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 05:53:00" (1/3) ... [2023-08-04 05:53:01,093 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43494760 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 05:53:01, skipping insertion in model container [2023-08-04 05:53:01,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:53:00" (2/3) ... [2023-08-04 05:53:01,094 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43494760 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 05:53:01, skipping insertion in model container [2023-08-04 05:53:01,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 05:53:01" (3/3) ... [2023-08-04 05:53:01,095 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix027_power.opt_pso.opt_rmo.opt_bound2.i [2023-08-04 05:53:01,101 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 05:53:01,108 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 05:53:01,109 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 05:53:01,109 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 05:53:01,159 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 05:53:01,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 156 transitions, 332 flow [2023-08-04 05:53:01,344 INFO L124 PetriNetUnfolderBase]: 62/932 cut-off events. [2023-08-04 05:53:01,344 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:53:01,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 982 conditions, 932 events. 62/932 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5807 event pairs, 0 based on Foata normal form. 0/820 useless extension candidates. Maximal degree in co-relation 553. Up to 32 conditions per place. [2023-08-04 05:53:01,352 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 156 transitions, 332 flow [2023-08-04 05:53:01,359 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 154 transitions, 324 flow [2023-08-04 05:53:01,361 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:53:01,368 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 154 transitions, 324 flow [2023-08-04 05:53:01,370 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 154 transitions, 324 flow [2023-08-04 05:53:01,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 154 transitions, 324 flow [2023-08-04 05:53:01,452 INFO L124 PetriNetUnfolderBase]: 62/929 cut-off events. [2023-08-04 05:53:01,452 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:53:01,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 976 conditions, 929 events. 62/929 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5752 event pairs, 0 based on Foata normal form. 0/817 useless extension candidates. Maximal degree in co-relation 547. Up to 32 conditions per place. [2023-08-04 05:53:01,466 INFO L119 LiptonReduction]: Number of co-enabled transitions 3984 [2023-08-04 05:53:04,666 INFO L134 LiptonReduction]: Checked pairs total: 9642 [2023-08-04 05:53:04,667 INFO L136 LiptonReduction]: Total number of compositions: 129 [2023-08-04 05:53:04,676 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 05:53:04,680 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;@53745b8e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:53:04,680 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 05:53:04,683 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:53:04,684 INFO L124 PetriNetUnfolderBase]: 1/22 cut-off events. [2023-08-04 05:53:04,684 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:53:04,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:53:04,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-04 05:53:04,684 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:53:04,688 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:53:04,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1846073383, now seen corresponding path program 1 times [2023-08-04 05:53:04,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:53:04,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083721811] [2023-08-04 05:53:04,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:53:04,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:53:04,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:53:04,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 05:53:04,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:53:04,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083721811] [2023-08-04 05:53:04,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083721811] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:53:04,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:53:04,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 05:53:04,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412203199] [2023-08-04 05:53:04,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:53:04,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:53:04,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:53:04,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:53:04,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:53:04,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 285 [2023-08-04 05:53:04,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 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 05:53:04,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:53:04,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 285 [2023-08-04 05:53:04,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:53:06,241 INFO L124 PetriNetUnfolderBase]: 10309/14923 cut-off events. [2023-08-04 05:53:06,241 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2023-08-04 05:53:06,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29940 conditions, 14923 events. 10309/14923 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 92082 event pairs, 8887 based on Foata normal form. 450/12901 useless extension candidates. Maximal degree in co-relation 29926. Up to 14573 conditions per place. [2023-08-04 05:53:06,301 INFO L140 encePairwiseOnDemand]: 281/285 looper letters, 34 selfloop transitions, 2 changer transitions 1/43 dead transitions. [2023-08-04 05:53:06,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 176 flow [2023-08-04 05:53:06,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:53:06,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:53:06,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 444 transitions. [2023-08-04 05:53:06,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.519298245614035 [2023-08-04 05:53:06,315 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 444 transitions. [2023-08-04 05:53:06,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 444 transitions. [2023-08-04 05:53:06,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:53:06,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 444 transitions. [2023-08-04 05:53:06,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 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 05:53:06,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 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 05:53:06,388 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 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 05:53:06,389 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 98 flow. Second operand 3 states and 444 transitions. [2023-08-04 05:53:06,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 176 flow [2023-08-04 05:53:06,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 43 transitions, 176 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 05:53:06,392 INFO L231 Difference]: Finished difference. Result has 52 places, 40 transitions, 104 flow [2023-08-04 05:53:06,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=52, PETRI_TRANSITIONS=40} [2023-08-04 05:53:06,395 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 3 predicate places. [2023-08-04 05:53:06,395 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 40 transitions, 104 flow [2023-08-04 05:53:06,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 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 05:53:06,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:53:06,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:53:06,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 05:53:06,396 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:53:06,396 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:53:06,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1433752067, now seen corresponding path program 1 times [2023-08-04 05:53:06,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:53:06,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361826370] [2023-08-04 05:53:06,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:53:06,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:53:06,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:53:06,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 05:53:06,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:53:06,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361826370] [2023-08-04 05:53:06,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361826370] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:53:06,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809491366] [2023-08-04 05:53:06,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:53:06,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:53:06,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:53:06,483 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 05:53:06,489 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 05:53:06,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:53:06,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 05:53:06,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:53:06,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 05:53:06,594 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 05:53:06,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809491366] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:53:06,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 05:53:06,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 05:53:06,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602041090] [2023-08-04 05:53:06,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:53:06,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:53:06,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:53:06,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:53:06,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:53:06,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 285 [2023-08-04 05:53:06,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 40 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 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 05:53:06,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:53:06,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 285 [2023-08-04 05:53:06,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:53:07,641 INFO L124 PetriNetUnfolderBase]: 8763/12549 cut-off events. [2023-08-04 05:53:07,641 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-08-04 05:53:07,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25159 conditions, 12549 events. 8763/12549 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 74150 event pairs, 6204 based on Foata normal form. 0/10544 useless extension candidates. Maximal degree in co-relation 25142. Up to 12159 conditions per place. [2023-08-04 05:53:07,693 INFO L140 encePairwiseOnDemand]: 282/285 looper letters, 37 selfloop transitions, 2 changer transitions 1/46 dead transitions. [2023-08-04 05:53:07,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 46 transitions, 196 flow [2023-08-04 05:53:07,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:53:07,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:53:07,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 446 transitions. [2023-08-04 05:53:07,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5216374269005848 [2023-08-04 05:53:07,695 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 446 transitions. [2023-08-04 05:53:07,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 446 transitions. [2023-08-04 05:53:07,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:53:07,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 446 transitions. [2023-08-04 05:53:07,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 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 05:53:07,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 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 05:53:07,699 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 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 05:53:07,699 INFO L175 Difference]: Start difference. First operand has 52 places, 40 transitions, 104 flow. Second operand 3 states and 446 transitions. [2023-08-04 05:53:07,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 46 transitions, 196 flow [2023-08-04 05:53:07,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 46 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 05:53:07,701 INFO L231 Difference]: Finished difference. Result has 53 places, 40 transitions, 108 flow [2023-08-04 05:53:07,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=53, PETRI_TRANSITIONS=40} [2023-08-04 05:53:07,701 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 4 predicate places. [2023-08-04 05:53:07,702 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 40 transitions, 108 flow [2023-08-04 05:53:07,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 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 05:53:07,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:53:07,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:53:07,707 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 05:53:07,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:53:07,907 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:53:07,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:53:07,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1807147051, now seen corresponding path program 1 times [2023-08-04 05:53:07,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:53:07,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404919405] [2023-08-04 05:53:07,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:53:07,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:53:07,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:53:07,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 05:53:07,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:53:07,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404919405] [2023-08-04 05:53:07,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404919405] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:53:07,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071543300] [2023-08-04 05:53:07,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:53:07,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:53:07,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:53:07,975 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 05:53:07,978 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 05:53:08,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:53:08,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 05:53:08,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:53:08,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 05:53:08,087 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 05:53:08,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 05:53:08,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071543300] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 05:53:08,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 05:53:08,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 05:53:08,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588064337] [2023-08-04 05:53:08,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 05:53:08,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 05:53:08,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:53:08,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 05:53:08,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:53:08,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 285 [2023-08-04 05:53:08,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 40 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 137.2) internal successors, (686), 5 states have internal predecessors, (686), 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 05:53:08,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:53:08,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 285 [2023-08-04 05:53:08,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:53:08,149 INFO L124 PetriNetUnfolderBase]: 4/16 cut-off events. [2023-08-04 05:53:08,149 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-04 05:53:08,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 16 events. 4/16 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 19 event pairs, 1 based on Foata normal form. 3/19 useless extension candidates. Maximal degree in co-relation 36. Up to 10 conditions per place. [2023-08-04 05:53:08,150 INFO L140 encePairwiseOnDemand]: 282/285 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2023-08-04 05:53:08,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 10 transitions, 43 flow [2023-08-04 05:53:08,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 05:53:08,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 05:53:08,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 546 transitions. [2023-08-04 05:53:08,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4789473684210526 [2023-08-04 05:53:08,153 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 546 transitions. [2023-08-04 05:53:08,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 546 transitions. [2023-08-04 05:53:08,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:53:08,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 546 transitions. [2023-08-04 05:53:08,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 136.5) internal successors, (546), 4 states have internal predecessors, (546), 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 05:53:08,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 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 05:53:08,159 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 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 05:53:08,160 INFO L175 Difference]: Start difference. First operand has 53 places, 40 transitions, 108 flow. Second operand 4 states and 546 transitions. [2023-08-04 05:53:08,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 10 transitions, 43 flow [2023-08-04 05:53:08,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 10 transitions, 41 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 05:53:08,160 INFO L231 Difference]: Finished difference. Result has 18 places, 0 transitions, 0 flow [2023-08-04 05:53:08,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=18, PETRI_TRANSITIONS=0} [2023-08-04 05:53:08,162 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -31 predicate places. [2023-08-04 05:53:08,162 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 0 transitions, 0 flow [2023-08-04 05:53:08,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 137.2) internal successors, (686), 5 states have internal predecessors, (686), 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 05:53:08,165 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 05:53:08,165 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 05:53:08,165 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 05:53:08,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 05:53:08,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-04 05:53:08,373 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-04 05:53:08,375 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 05:53:08,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 156 transitions, 332 flow [2023-08-04 05:53:08,491 INFO L124 PetriNetUnfolderBase]: 62/932 cut-off events. [2023-08-04 05:53:08,491 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:53:08,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 982 conditions, 932 events. 62/932 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5807 event pairs, 0 based on Foata normal form. 0/820 useless extension candidates. Maximal degree in co-relation 553. Up to 32 conditions per place. [2023-08-04 05:53:08,492 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 156 transitions, 332 flow [2023-08-04 05:53:08,493 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 125 transitions, 270 flow [2023-08-04 05:53:08,493 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:53:08,493 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 131 places, 125 transitions, 270 flow [2023-08-04 05:53:08,493 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 131 places, 125 transitions, 270 flow [2023-08-04 05:53:08,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 125 transitions, 270 flow [2023-08-04 05:53:08,512 INFO L124 PetriNetUnfolderBase]: 14/436 cut-off events. [2023-08-04 05:53:08,512 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:53:08,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 486 conditions, 436 events. 14/436 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2016 event pairs, 0 based on Foata normal form. 0/404 useless extension candidates. Maximal degree in co-relation 305. Up to 16 conditions per place. [2023-08-04 05:53:08,516 INFO L119 LiptonReduction]: Number of co-enabled transitions 2284 [2023-08-04 05:53:11,268 INFO L134 LiptonReduction]: Checked pairs total: 6178 [2023-08-04 05:53:11,268 INFO L136 LiptonReduction]: Total number of compositions: 97 [2023-08-04 05:53:11,269 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 05:53:11,270 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;@53745b8e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:53:11,270 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 05:53:11,272 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:53:11,272 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-08-04 05:53:11,272 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:53:11,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:53:11,272 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 05:53:11,272 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 05:53:11,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:53:11,278 INFO L85 PathProgramCache]: Analyzing trace with hash 414647158, now seen corresponding path program 1 times [2023-08-04 05:53:11,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:53:11,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116700256] [2023-08-04 05:53:11,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:53:11,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:53:11,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 05:53:11,295 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 05:53:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 05:53:11,311 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 05:53:11,312 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 05:53:11,312 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 05:53:11,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 05:53:11,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 05:53:11,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 05:53:11,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-04 05:53:11,313 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 05:53:11,313 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (2/2) [2023-08-04 05:53:11,313 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 05:53:11,313 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 05:53:11,331 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 05:53:11,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 188 transitions, 424 flow [2023-08-04 05:53:11,775 INFO L124 PetriNetUnfolderBase]: 282/4332 cut-off events. [2023-08-04 05:53:11,776 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 05:53:11,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4621 conditions, 4332 events. 282/4332 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 42155 event pairs, 0 based on Foata normal form. 0/3831 useless extension candidates. Maximal degree in co-relation 3127. Up to 162 conditions per place. [2023-08-04 05:53:11,803 INFO L82 GeneralOperation]: Start removeDead. Operand has 199 places, 188 transitions, 424 flow [2023-08-04 05:53:11,811 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 197 places, 186 transitions, 412 flow [2023-08-04 05:53:11,811 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:53:11,811 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 197 places, 186 transitions, 412 flow [2023-08-04 05:53:11,812 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 197 places, 186 transitions, 412 flow [2023-08-04 05:53:11,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 186 transitions, 412 flow [2023-08-04 05:53:12,128 INFO L124 PetriNetUnfolderBase]: 282/4328 cut-off events. [2023-08-04 05:53:12,128 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2023-08-04 05:53:12,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4609 conditions, 4328 events. 282/4328 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 42148 event pairs, 0 based on Foata normal form. 0/3827 useless extension candidates. Maximal degree in co-relation 3115. Up to 162 conditions per place. [2023-08-04 05:53:12,207 INFO L119 LiptonReduction]: Number of co-enabled transitions 9744 [2023-08-04 05:53:15,272 INFO L134 LiptonReduction]: Checked pairs total: 26983 [2023-08-04 05:53:15,272 INFO L136 LiptonReduction]: Total number of compositions: 139 [2023-08-04 05:53:15,273 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 05:53:15,274 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;@53745b8e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:53:15,274 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 05:53:15,276 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:53:15,276 INFO L124 PetriNetUnfolderBase]: 1/21 cut-off events. [2023-08-04 05:53:15,276 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:53:15,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:53:15,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-04 05:53:15,276 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 05:53:15,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:53:15,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1842708102, now seen corresponding path program 1 times [2023-08-04 05:53:15,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:53:15,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807703644] [2023-08-04 05:53:15,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:53:15,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:53:15,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:53:15,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 05:53:15,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:53:15,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807703644] [2023-08-04 05:53:15,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807703644] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:53:15,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:53:15,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 05:53:15,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974196960] [2023-08-04 05:53:15,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:53:15,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:53:15,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:53:15,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:53:15,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:53:15,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 327 [2023-08-04 05:53:15,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 65 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 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 05:53:15,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:53:15,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 327 [2023-08-04 05:53:15,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand