/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_mix023_power.oepc_pso.oepc_rmo.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 05:49:22,303 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 05:49:22,376 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 05:49:22,381 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 05:49:22,382 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 05:49:22,382 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 05:49:22,383 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 05:49:22,413 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 05:49:22,413 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 05:49:22,417 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 05:49:22,417 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 05:49:22,418 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 05:49:22,418 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 05:49:22,420 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 05:49:22,420 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 05:49:22,420 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 05:49:22,420 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 05:49:22,420 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 05:49:22,421 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 05:49:22,421 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 05:49:22,421 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 05:49:22,421 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 05:49:22,422 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 05:49:22,422 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 05:49:22,423 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 05:49:22,423 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 05:49:22,423 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 05:49:22,424 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 05:49:22,424 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 05:49:22,424 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 05:49:22,425 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 05:49:22,425 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 05:49:22,426 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 05:49:22,426 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 05:49:22,426 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 05:49:22,426 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 05:49:22,426 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 05:49:22,426 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 05:49:22,426 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 05:49:22,427 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 05:49:22,427 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 05:49:22,427 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 05:49:22,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 05:49:22,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 05:49:22,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 05:49:22,674 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 05:49:22,674 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 05:49:22,675 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix023_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-04 05:49:23,780 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 05:49:23,973 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 05:49:23,974 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix023_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-04 05:49:23,984 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08d6bd817/0f3563fc821f4a18a44883d1ad3d7231/FLAGea84b029d [2023-08-04 05:49:23,993 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08d6bd817/0f3563fc821f4a18a44883d1ad3d7231 [2023-08-04 05:49:23,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 05:49:23,995 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 05:49:23,996 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 05:49:23,996 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 05:49:23,998 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 05:49:23,998 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 05:49:23" (1/1) ... [2023-08-04 05:49:23,999 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@418df695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:49:23, skipping insertion in model container [2023-08-04 05:49:23,999 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 05:49:23" (1/1) ... [2023-08-04 05:49:24,049 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 05:49:24,166 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_mix023_power.oepc_pso.oepc_rmo.oepc_bound2.i[969,982] [2023-08-04 05:49:24,328 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 05:49:24,335 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 05:49:24,347 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_mix023_power.oepc_pso.oepc_rmo.oepc_bound2.i[969,982] [2023-08-04 05:49:24,372 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 05:49:24,373 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 05:49:24,394 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 05:49:24,414 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 05:49:24,414 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 05:49:24,419 INFO L206 MainTranslator]: Completed translation [2023-08-04 05:49:24,419 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:49:24 WrapperNode [2023-08-04 05:49:24,419 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 05:49:24,420 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 05:49:24,420 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 05:49:24,420 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 05:49:24,424 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:49:24" (1/1) ... [2023-08-04 05:49:24,436 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:49:24" (1/1) ... [2023-08-04 05:49:24,455 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 177 [2023-08-04 05:49:24,455 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 05:49:24,456 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 05:49:24,456 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 05:49:24,456 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 05:49:24,463 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:49:24" (1/1) ... [2023-08-04 05:49:24,463 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:49:24" (1/1) ... [2023-08-04 05:49:24,466 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:49:24" (1/1) ... [2023-08-04 05:49:24,467 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:49:24" (1/1) ... [2023-08-04 05:49:24,475 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:49:24" (1/1) ... [2023-08-04 05:49:24,478 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:49:24" (1/1) ... [2023-08-04 05:49:24,480 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:49:24" (1/1) ... [2023-08-04 05:49:24,481 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:49:24" (1/1) ... [2023-08-04 05:49:24,483 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 05:49:24,484 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 05:49:24,484 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 05:49:24,484 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 05:49:24,485 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:49:24" (1/1) ... [2023-08-04 05:49:24,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 05:49:24,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:49:24,540 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 05:49:24,548 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 05:49:24,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 05:49:24,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 05:49:24,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 05:49:24,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 05:49:24,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 05:49:24,577 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 05:49:24,577 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 05:49:24,577 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 05:49:24,577 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 05:49:24,578 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 05:49:24,578 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 05:49:24,578 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-04 05:49:24,578 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-04 05:49:24,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 05:49:24,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 05:49:24,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 05:49:24,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 05:49:24,579 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 05:49:24,694 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 05:49:24,696 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 05:49:24,949 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 05:49:25,014 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 05:49:25,014 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-04 05:49:25,016 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 05:49:25 BoogieIcfgContainer [2023-08-04 05:49:25,016 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 05:49:25,018 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 05:49:25,018 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 05:49:25,020 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 05:49:25,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 05:49:23" (1/3) ... [2023-08-04 05:49:25,021 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6714d969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 05:49:25, skipping insertion in model container [2023-08-04 05:49:25,021 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:49:24" (2/3) ... [2023-08-04 05:49:25,021 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6714d969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 05:49:25, skipping insertion in model container [2023-08-04 05:49:25,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 05:49:25" (3/3) ... [2023-08-04 05:49:25,022 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix023_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-04 05:49:25,028 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 05:49:25,035 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 05:49:25,035 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 05:49:25,035 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 05:49:25,084 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 05:49:25,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 160 transitions, 340 flow [2023-08-04 05:49:25,305 INFO L124 PetriNetUnfolderBase]: 62/935 cut-off events. [2023-08-04 05:49:25,306 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:49:25,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 985 conditions, 935 events. 62/935 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5800 event pairs, 0 based on Foata normal form. 0/826 useless extension candidates. Maximal degree in co-relation 556. Up to 32 conditions per place. [2023-08-04 05:49:25,313 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 160 transitions, 340 flow [2023-08-04 05:49:25,321 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 163 places, 160 transitions, 340 flow [2023-08-04 05:49:25,324 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:49:25,336 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 163 places, 160 transitions, 340 flow [2023-08-04 05:49:25,338 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 163 places, 160 transitions, 340 flow [2023-08-04 05:49:25,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 160 transitions, 340 flow [2023-08-04 05:49:25,424 INFO L124 PetriNetUnfolderBase]: 62/935 cut-off events. [2023-08-04 05:49:25,425 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:49:25,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 985 conditions, 935 events. 62/935 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5800 event pairs, 0 based on Foata normal form. 0/826 useless extension candidates. Maximal degree in co-relation 556. Up to 32 conditions per place. [2023-08-04 05:49:25,438 INFO L119 LiptonReduction]: Number of co-enabled transitions 4672 [2023-08-04 05:49:28,837 INFO L134 LiptonReduction]: Checked pairs total: 12114 [2023-08-04 05:49:28,838 INFO L136 LiptonReduction]: Total number of compositions: 133 [2023-08-04 05:49:28,847 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 05:49:28,850 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;@338a31a2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:49:28,850 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 05:49:28,852 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:49:28,853 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-08-04 05:49:28,853 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:49:28,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:49:28,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 05:49:28,853 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:49:28,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:49:28,856 INFO L85 PathProgramCache]: Analyzing trace with hash 20773107, now seen corresponding path program 1 times [2023-08-04 05:49:28,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:49:28,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057801305] [2023-08-04 05:49:28,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:49:28,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:49:28,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:49:29,139 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 05:49:29,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:49:29,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057801305] [2023-08-04 05:49:29,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057801305] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:49:29,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:49:29,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 05:49:29,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282693597] [2023-08-04 05:49:29,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:49:29,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:49:29,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:49:29,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:49:29,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:49:29,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 293 [2023-08-04 05:49:29,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 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 05:49:29,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:49:29,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 293 [2023-08-04 05:49:29,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:49:30,909 INFO L124 PetriNetUnfolderBase]: 12873/19715 cut-off events. [2023-08-04 05:49:30,909 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2023-08-04 05:49:30,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38592 conditions, 19715 events. 12873/19715 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 806. Compared 141579 event pairs, 3816 based on Foata normal form. 0/18013 useless extension candidates. Maximal degree in co-relation 32332. Up to 12394 conditions per place. [2023-08-04 05:49:30,996 INFO L140 encePairwiseOnDemand]: 289/293 looper letters, 56 selfloop transitions, 2 changer transitions 7/70 dead transitions. [2023-08-04 05:49:30,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 70 transitions, 291 flow [2023-08-04 05:49:30,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:49:30,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:49:31,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 484 transitions. [2023-08-04 05:49:31,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5506257110352674 [2023-08-04 05:49:31,013 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 484 transitions. [2023-08-04 05:49:31,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 484 transitions. [2023-08-04 05:49:31,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:49:31,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 484 transitions. [2023-08-04 05:49:31,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 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 05:49:31,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 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 05:49:31,030 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 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 05:49:31,032 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 108 flow. Second operand 3 states and 484 transitions. [2023-08-04 05:49:31,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 70 transitions, 291 flow [2023-08-04 05:49:31,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 70 transitions, 291 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 05:49:31,037 INFO L231 Difference]: Finished difference. Result has 53 places, 37 transitions, 90 flow [2023-08-04 05:49:31,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=53, PETRI_TRANSITIONS=37} [2023-08-04 05:49:31,042 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2023-08-04 05:49:31,042 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 37 transitions, 90 flow [2023-08-04 05:49:31,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 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 05:49:31,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:49:31,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:49:31,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 05:49:31,043 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:49:31,043 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:49:31,044 INFO L85 PathProgramCache]: Analyzing trace with hash 528058863, now seen corresponding path program 1 times [2023-08-04 05:49:31,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:49:31,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423952154] [2023-08-04 05:49:31,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:49:31,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:49:31,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:49:31,107 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 05:49:31,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:49:31,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423952154] [2023-08-04 05:49:31,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423952154] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:49:31,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:49:31,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 05:49:31,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245750738] [2023-08-04 05:49:31,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:49:31,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:49:31,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:49:31,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:49:31,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:49:31,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 293 [2023-08-04 05:49:31,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 37 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 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 05:49:31,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:49:31,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 293 [2023-08-04 05:49:31,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:49:32,419 INFO L124 PetriNetUnfolderBase]: 9395/13334 cut-off events. [2023-08-04 05:49:32,420 INFO L125 PetriNetUnfolderBase]: For 1003/1003 co-relation queries the response was YES. [2023-08-04 05:49:32,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27799 conditions, 13334 events. 9395/13334 cut-off events. For 1003/1003 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 78821 event pairs, 8432 based on Foata normal form. 0/12518 useless extension candidates. Maximal degree in co-relation 27783. Up to 13240 conditions per place. [2023-08-04 05:49:32,478 INFO L140 encePairwiseOnDemand]: 290/293 looper letters, 33 selfloop transitions, 2 changer transitions 1/41 dead transitions. [2023-08-04 05:49:32,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 41 transitions, 172 flow [2023-08-04 05:49:32,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:49:32,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:49:32,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 448 transitions. [2023-08-04 05:49:32,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5096700796359499 [2023-08-04 05:49:32,481 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 448 transitions. [2023-08-04 05:49:32,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 448 transitions. [2023-08-04 05:49:32,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:49:32,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 448 transitions. [2023-08-04 05:49:32,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 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 05:49:32,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 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 05:49:32,490 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 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 05:49:32,495 INFO L175 Difference]: Start difference. First operand has 53 places, 37 transitions, 90 flow. Second operand 3 states and 448 transitions. [2023-08-04 05:49:32,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 41 transitions, 172 flow [2023-08-04 05:49:32,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 41 transitions, 166 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 05:49:32,497 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 94 flow [2023-08-04 05:49:32,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2023-08-04 05:49:32,498 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -3 predicate places. [2023-08-04 05:49:32,498 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 94 flow [2023-08-04 05:49:32,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 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 05:49:32,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:49:32,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:49:32,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-04 05:49:32,499 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:49:32,500 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:49:32,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1712275254, now seen corresponding path program 1 times [2023-08-04 05:49:32,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:49:32,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023675326] [2023-08-04 05:49:32,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:49:32,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:49:32,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:49:32,557 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 05:49:32,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:49:32,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023675326] [2023-08-04 05:49:32,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023675326] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:49:32,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204056738] [2023-08-04 05:49:32,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:49:32,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:49:32,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:49:32,561 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 05:49:32,612 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 05:49:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:49:32,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 05:49:32,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:49:32,664 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 05:49:32,665 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 05:49:32,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204056738] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:49:32,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 05:49:32,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 05:49:32,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130439000] [2023-08-04 05:49:32,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:49:32,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:49:32,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:49:32,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:49:32,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:49:32,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 293 [2023-08-04 05:49:32,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 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 05:49:32,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:49:32,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 293 [2023-08-04 05:49:32,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:49:33,619 INFO L124 PetriNetUnfolderBase]: 7984/11167 cut-off events. [2023-08-04 05:49:33,619 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-08-04 05:49:33,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22468 conditions, 11167 events. 7984/11167 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 63854 event pairs, 5674 based on Foata normal form. 0/10503 useless extension candidates. Maximal degree in co-relation 22451. Up to 11037 conditions per place. [2023-08-04 05:49:33,692 INFO L140 encePairwiseOnDemand]: 290/293 looper letters, 36 selfloop transitions, 2 changer transitions 1/44 dead transitions. [2023-08-04 05:49:33,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 44 transitions, 186 flow [2023-08-04 05:49:33,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:49:33,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:49:33,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 451 transitions. [2023-08-04 05:49:33,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130830489192264 [2023-08-04 05:49:33,695 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 451 transitions. [2023-08-04 05:49:33,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 451 transitions. [2023-08-04 05:49:33,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:49:33,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 451 transitions. [2023-08-04 05:49:33,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 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 05:49:33,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 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 05:49:33,697 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 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 05:49:33,698 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 94 flow. Second operand 3 states and 451 transitions. [2023-08-04 05:49:33,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 44 transitions, 186 flow [2023-08-04 05:49:33,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 44 transitions, 182 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 05:49:33,699 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 98 flow [2023-08-04 05:49:33,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2023-08-04 05:49:33,700 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -2 predicate places. [2023-08-04 05:49:33,700 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 98 flow [2023-08-04 05:49:33,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 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 05:49:33,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:49:33,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:49:33,705 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 05:49:33,905 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 05:49:33,905 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:49:33,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:49:33,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1680631106, now seen corresponding path program 1 times [2023-08-04 05:49:33,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:49:33,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043215987] [2023-08-04 05:49:33,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:49:33,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:49:33,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:49:33,965 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 05:49:33,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:49:33,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043215987] [2023-08-04 05:49:33,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043215987] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:49:33,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33208258] [2023-08-04 05:49:33,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:49:33,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:49:33,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:49:33,967 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 05:49:33,969 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 05:49:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:49:34,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 05:49:34,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:49:34,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 05:49:34,079 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 05:49:34,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33208258] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:49:34,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 05:49:34,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 05:49:34,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874899296] [2023-08-04 05:49:34,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:49:34,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:49:34,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:49:34,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:49:34,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:49:34,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 293 [2023-08-04 05:49:34,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 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 05:49:34,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:49:34,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 293 [2023-08-04 05:49:34,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:49:35,013 INFO L124 PetriNetUnfolderBase]: 6824/9465 cut-off events. [2023-08-04 05:49:35,014 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-08-04 05:49:35,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19062 conditions, 9465 events. 6824/9465 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 51501 event pairs, 4904 based on Foata normal form. 0/8948 useless extension candidates. Maximal degree in co-relation 19045. Up to 9119 conditions per place. [2023-08-04 05:49:35,060 INFO L140 encePairwiseOnDemand]: 290/293 looper letters, 39 selfloop transitions, 2 changer transitions 1/47 dead transitions. [2023-08-04 05:49:35,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 47 transitions, 202 flow [2023-08-04 05:49:35,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:49:35,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:49:35,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 454 transitions. [2023-08-04 05:49:35,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5164960182025028 [2023-08-04 05:49:35,062 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 454 transitions. [2023-08-04 05:49:35,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 454 transitions. [2023-08-04 05:49:35,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:49:35,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 454 transitions. [2023-08-04 05:49:35,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 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 05:49:35,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 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 05:49:35,066 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 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 05:49:35,066 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 98 flow. Second operand 3 states and 454 transitions. [2023-08-04 05:49:35,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 47 transitions, 202 flow [2023-08-04 05:49:35,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 47 transitions, 198 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 05:49:35,068 INFO L231 Difference]: Finished difference. Result has 51 places, 37 transitions, 102 flow [2023-08-04 05:49:35,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=51, PETRI_TRANSITIONS=37} [2023-08-04 05:49:35,068 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -1 predicate places. [2023-08-04 05:49:35,069 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 37 transitions, 102 flow [2023-08-04 05:49:35,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 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 05:49:35,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:49:35,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:49:35,089 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-04 05:49:35,275 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,SelfDestructingSolverStorable3 [2023-08-04 05:49:35,275 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:49:35,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:49:35,276 INFO L85 PathProgramCache]: Analyzing trace with hash -2079283155, now seen corresponding path program 1 times [2023-08-04 05:49:35,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:49:35,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624448620] [2023-08-04 05:49:35,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:49:35,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:49:35,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:49:35,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 05:49:35,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:49:35,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624448620] [2023-08-04 05:49:35,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624448620] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:49:35,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434114944] [2023-08-04 05:49:35,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:49:35,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:49:35,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:49:35,354 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 05:49:35,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 05:49:35,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:49:35,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 05:49:35,444 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:49:35,457 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 05:49:35,458 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 05:49:35,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434114944] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:49:35,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 05:49:35,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 05:49:35,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317390253] [2023-08-04 05:49:35,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:49:35,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:49:35,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:49:35,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:49:35,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:49:35,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 293 [2023-08-04 05:49:35,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 37 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 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 05:49:35,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:49:35,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 293 [2023-08-04 05:49:35,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:49:36,227 INFO L124 PetriNetUnfolderBase]: 6392/8857 cut-off events. [2023-08-04 05:49:36,227 INFO L125 PetriNetUnfolderBase]: For 150/150 co-relation queries the response was YES. [2023-08-04 05:49:36,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18019 conditions, 8857 events. 6392/8857 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 46492 event pairs, 4872 based on Foata normal form. 0/8524 useless extension candidates. Maximal degree in co-relation 18001. Up to 7279 conditions per place. [2023-08-04 05:49:36,262 INFO L140 encePairwiseOnDemand]: 290/293 looper letters, 43 selfloop transitions, 2 changer transitions 1/51 dead transitions. [2023-08-04 05:49:36,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 51 transitions, 222 flow [2023-08-04 05:49:36,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:49:36,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:49:36,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 458 transitions. [2023-08-04 05:49:36,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5210466439135382 [2023-08-04 05:49:36,264 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 458 transitions. [2023-08-04 05:49:36,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 458 transitions. [2023-08-04 05:49:36,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:49:36,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 458 transitions. [2023-08-04 05:49:36,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 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 05:49:36,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 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 05:49:36,267 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 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 05:49:36,267 INFO L175 Difference]: Start difference. First operand has 51 places, 37 transitions, 102 flow. Second operand 3 states and 458 transitions. [2023-08-04 05:49:36,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 51 transitions, 222 flow [2023-08-04 05:49:36,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 51 transitions, 218 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 05:49:36,268 INFO L231 Difference]: Finished difference. Result has 52 places, 37 transitions, 106 flow [2023-08-04 05:49:36,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=52, PETRI_TRANSITIONS=37} [2023-08-04 05:49:36,269 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2023-08-04 05:49:36,269 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 37 transitions, 106 flow [2023-08-04 05:49:36,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 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 05:49:36,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:49:36,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:49:36,287 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-04 05:49:36,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:49:36,475 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:49:36,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:49:36,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1902465024, now seen corresponding path program 1 times [2023-08-04 05:49:36,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:49:36,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208077366] [2023-08-04 05:49:36,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:49:36,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:49:36,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:49:36,555 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 05:49:36,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:49:36,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208077366] [2023-08-04 05:49:36,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208077366] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:49:36,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161174104] [2023-08-04 05:49:36,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:49:36,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:49:36,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:49:36,557 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 05:49:36,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-04 05:49:36,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:49:36,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 05:49:36,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:49:36,684 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 05:49:36,684 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 05:49:36,697 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 05:49:36,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161174104] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 05:49:36,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 05:49:36,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 05:49:36,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142110300] [2023-08-04 05:49:36,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 05:49:36,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 05:49:36,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:49:36,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 05:49:36,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:49:36,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 293 [2023-08-04 05:49:36,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 37 transitions, 106 flow. Second operand has 5 states, 5 states have (on average 140.6) internal successors, (703), 5 states have internal predecessors, (703), 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 05:49:36,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:49:36,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 293 [2023-08-04 05:49:36,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:49:36,733 INFO L124 PetriNetUnfolderBase]: 6/21 cut-off events. [2023-08-04 05:49:36,733 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:49:36,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 21 events. 6/21 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 31 event pairs, 0 based on Foata normal form. 4/25 useless extension candidates. Maximal degree in co-relation 47. Up to 14 conditions per place. [2023-08-04 05:49:36,733 INFO L140 encePairwiseOnDemand]: 290/293 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2023-08-04 05:49:36,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 12 transitions, 51 flow [2023-08-04 05:49:36,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 05:49:36,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 05:49:36,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 556 transitions. [2023-08-04 05:49:36,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47440273037542663 [2023-08-04 05:49:36,735 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 556 transitions. [2023-08-04 05:49:36,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 556 transitions. [2023-08-04 05:49:36,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:49:36,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 556 transitions. [2023-08-04 05:49:36,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 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 05:49:36,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 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 05:49:36,740 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 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 05:49:36,740 INFO L175 Difference]: Start difference. First operand has 52 places, 37 transitions, 106 flow. Second operand 4 states and 556 transitions. [2023-08-04 05:49:36,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 12 transitions, 51 flow [2023-08-04 05:49:36,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 12 transitions, 49 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 05:49:36,741 INFO L231 Difference]: Finished difference. Result has 21 places, 0 transitions, 0 flow [2023-08-04 05:49:36,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=19, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=21, PETRI_TRANSITIONS=0} [2023-08-04 05:49:36,742 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -31 predicate places. [2023-08-04 05:49:36,742 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 0 transitions, 0 flow [2023-08-04 05:49:36,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 140.6) internal successors, (703), 5 states have internal predecessors, (703), 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 05:49:36,744 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 05:49:36,745 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 05:49:36,745 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 05:49:36,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-04 05:49:36,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:49:36,952 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-04 05:49:36,954 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 05:49:36,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 160 transitions, 340 flow [2023-08-04 05:49:37,022 INFO L124 PetriNetUnfolderBase]: 62/935 cut-off events. [2023-08-04 05:49:37,023 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:49:37,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 985 conditions, 935 events. 62/935 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5800 event pairs, 0 based on Foata normal form. 0/826 useless extension candidates. Maximal degree in co-relation 556. Up to 32 conditions per place. [2023-08-04 05:49:37,024 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 160 transitions, 340 flow [2023-08-04 05:49:37,025 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 129 transitions, 278 flow [2023-08-04 05:49:37,025 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:49:37,026 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 135 places, 129 transitions, 278 flow [2023-08-04 05:49:37,026 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 135 places, 129 transitions, 278 flow [2023-08-04 05:49:37,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 129 transitions, 278 flow [2023-08-04 05:49:37,054 INFO L124 PetriNetUnfolderBase]: 14/439 cut-off events. [2023-08-04 05:49:37,054 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:49:37,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 489 conditions, 439 events. 14/439 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2026 event pairs, 0 based on Foata normal form. 0/410 useless extension candidates. Maximal degree in co-relation 308. Up to 16 conditions per place. [2023-08-04 05:49:37,058 INFO L119 LiptonReduction]: Number of co-enabled transitions 2750 [2023-08-04 05:49:39,342 INFO L134 LiptonReduction]: Checked pairs total: 7591 [2023-08-04 05:49:39,343 INFO L136 LiptonReduction]: Total number of compositions: 98 [2023-08-04 05:49:39,352 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 05:49:39,354 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;@338a31a2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:49:39,354 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 05:49:39,357 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:49:39,357 INFO L124 PetriNetUnfolderBase]: 0/20 cut-off events. [2023-08-04 05:49:39,357 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:49:39,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:49:39,357 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 05:49:39,357 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 05:49:39,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:49:39,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1391846862, now seen corresponding path program 1 times [2023-08-04 05:49:39,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:49:39,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843461036] [2023-08-04 05:49:39,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:49:39,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:49:39,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 05:49:39,365 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 05:49:39,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 05:49:39,380 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 05:49:39,380 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 05:49:39,380 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 05:49:39,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 05:49:39,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 05:49:39,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 05:49:39,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-04 05:49:39,381 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 05:49:39,381 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (2/2) [2023-08-04 05:49:39,382 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 05:49:39,382 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 05:49:39,414 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 05:49:39,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 195 transitions, 438 flow [2023-08-04 05:49:39,849 INFO L124 PetriNetUnfolderBase]: 282/4331 cut-off events. [2023-08-04 05:49:39,849 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 05:49:39,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4620 conditions, 4331 events. 282/4331 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 42139 event pairs, 0 based on Foata normal form. 0/3846 useless extension candidates. Maximal degree in co-relation 3126. Up to 162 conditions per place. [2023-08-04 05:49:39,868 INFO L82 GeneralOperation]: Start removeDead. Operand has 206 places, 195 transitions, 438 flow [2023-08-04 05:49:39,876 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 195 transitions, 438 flow [2023-08-04 05:49:39,877 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:49:39,877 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 206 places, 195 transitions, 438 flow [2023-08-04 05:49:39,877 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 206 places, 195 transitions, 438 flow [2023-08-04 05:49:39,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 195 transitions, 438 flow [2023-08-04 05:49:40,292 INFO L124 PetriNetUnfolderBase]: 282/4331 cut-off events. [2023-08-04 05:49:40,293 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 05:49:40,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4620 conditions, 4331 events. 282/4331 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 42139 event pairs, 0 based on Foata normal form. 0/3846 useless extension candidates. Maximal degree in co-relation 3126. Up to 162 conditions per place. [2023-08-04 05:49:40,380 INFO L119 LiptonReduction]: Number of co-enabled transitions 11516 [2023-08-04 05:49:43,751 INFO L134 LiptonReduction]: Checked pairs total: 39735 [2023-08-04 05:49:43,751 INFO L136 LiptonReduction]: Total number of compositions: 142 [2023-08-04 05:49:43,753 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 05:49:43,754 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;@338a31a2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:49:43,754 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 05:49:43,755 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:49:43,755 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-08-04 05:49:43,755 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:49:43,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:49:43,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 05:49:43,755 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 05:49:43,755 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:49:43,756 INFO L85 PathProgramCache]: Analyzing trace with hash 35229721, now seen corresponding path program 1 times [2023-08-04 05:49:43,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:49:43,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022144878] [2023-08-04 05:49:43,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:49:43,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:49:43,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:49:43,826 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 05:49:43,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:49:43,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022144878] [2023-08-04 05:49:43,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022144878] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:49:43,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:49:43,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 05:49:43,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968591358] [2023-08-04 05:49:43,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:49:43,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:49:43,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:49:43,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:49:43,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:49:43,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 337 [2023-08-04 05:49:43,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 71 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 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 05:49:43,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:49:43,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 337 [2023-08-04 05:49:43,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand