/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 11:50:15,834 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 11:50:15,891 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-24 11:50:15,896 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 11:50:15,896 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 11:50:15,922 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 11:50:15,922 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 11:50:15,922 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 11:50:15,923 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 11:50:15,926 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 11:50:15,927 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 11:50:15,927 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 11:50:15,927 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 11:50:15,928 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 11:50:15,928 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 11:50:15,929 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 11:50:15,929 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 11:50:15,929 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 11:50:15,929 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 11:50:15,929 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 11:50:15,929 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 11:50:15,930 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 11:50:15,930 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 11:50:15,931 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 11:50:15,931 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 11:50:15,931 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 11:50:15,931 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 11:50:15,931 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 11:50:15,931 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 11:50:15,932 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 11:50:15,932 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 11:50:15,932 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 11:50:15,933 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 11:50:15,933 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 11:50:15,933 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 11:50:15,933 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-24 11:50:16,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 11:50:16,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 11:50:16,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 11:50:16,232 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 11:50:16,232 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 11:50:16,233 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-24 11:50:17,233 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 11:50:17,448 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 11:50:17,448 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-24 11:50:17,459 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0bbd161d/74b1afb945764522b5b5cc033fbd5ae0/FLAGbe96e462a [2023-08-24 11:50:17,470 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0bbd161d/74b1afb945764522b5b5cc033fbd5ae0 [2023-08-24 11:50:17,471 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 11:50:17,472 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 11:50:17,473 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 11:50:17,473 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 11:50:17,474 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 11:50:17,475 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 11:50:17" (1/1) ... [2023-08-24 11:50:17,475 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@231e9bd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:50:17, skipping insertion in model container [2023-08-24 11:50:17,475 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 11:50:17" (1/1) ... [2023-08-24 11:50:17,515 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 11:50:17,621 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-24 11:50:17,749 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 11:50:17,756 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 11:50:17,765 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-24 11:50:17,779 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-24 11:50:17,780 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-24 11:50:17,795 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 11:50:17,821 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 11:50:17,821 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 11:50:17,826 INFO L206 MainTranslator]: Completed translation [2023-08-24 11:50:17,826 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:50:17 WrapperNode [2023-08-24 11:50:17,826 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 11:50:17,827 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 11:50:17,827 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 11:50:17,827 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 11:50:17,831 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:50:17" (1/1) ... [2023-08-24 11:50:17,854 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:50:17" (1/1) ... [2023-08-24 11:50:17,870 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-08-24 11:50:17,871 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 11:50:17,871 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 11:50:17,871 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 11:50:17,871 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 11:50:17,877 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:50:17" (1/1) ... [2023-08-24 11:50:17,877 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:50:17" (1/1) ... [2023-08-24 11:50:17,885 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:50:17" (1/1) ... [2023-08-24 11:50:17,885 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:50:17" (1/1) ... [2023-08-24 11:50:17,894 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:50:17" (1/1) ... [2023-08-24 11:50:17,895 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:50:17" (1/1) ... [2023-08-24 11:50:17,895 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:50:17" (1/1) ... [2023-08-24 11:50:17,896 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:50:17" (1/1) ... [2023-08-24 11:50:17,897 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 11:50:17,898 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 11:50:17,898 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 11:50:17,898 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 11:50:17,899 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:50:17" (1/1) ... [2023-08-24 11:50:17,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 11:50:17,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 11:50:17,921 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) [2023-08-24 11:50:17,943 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 [2023-08-24 11:50:17,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 11:50:17,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 11:50:17,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 11:50:17,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 11:50:17,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 11:50:17,952 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-24 11:50:17,952 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-24 11:50:17,952 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-24 11:50:17,952 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-24 11:50:17,952 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-24 11:50:17,952 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-24 11:50:17,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 11:50:17,953 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 11:50:17,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 11:50:17,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 11:50:17,954 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 11:50:18,064 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 11:50:18,065 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 11:50:18,214 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 11:50:18,218 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 11:50:18,218 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 11:50:18,220 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 11:50:18 BoogieIcfgContainer [2023-08-24 11:50:18,220 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 11:50:18,221 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 11:50:18,221 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 11:50:18,223 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 11:50:18,223 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 11:50:17" (1/3) ... [2023-08-24 11:50:18,224 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b4c10b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 11:50:18, skipping insertion in model container [2023-08-24 11:50:18,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:50:17" (2/3) ... [2023-08-24 11:50:18,224 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b4c10b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 11:50:18, skipping insertion in model container [2023-08-24 11:50:18,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 11:50:18" (3/3) ... [2023-08-24 11:50:18,227 INFO L112 eAbstractionObserver]: Analyzing ICFG safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-24 11:50:18,238 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 11:50:18,238 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 11:50:18,239 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 11:50:18,297 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 11:50:18,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2023-08-24 11:50:18,371 INFO L124 PetriNetUnfolderBase]: 2/81 cut-off events. [2023-08-24 11:50:18,371 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:50:18,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2023-08-24 11:50:18,375 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2023-08-24 11:50:18,379 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2023-08-24 11:50:18,381 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 11:50:18,411 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 69 transitions, 147 flow [2023-08-24 11:50:18,413 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 69 transitions, 147 flow [2023-08-24 11:50:18,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 69 transitions, 147 flow [2023-08-24 11:50:18,423 INFO L124 PetriNetUnfolderBase]: 1/69 cut-off events. [2023-08-24 11:50:18,423 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:50:18,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 69 events. 1/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-08-24 11:50:18,424 INFO L119 LiptonReduction]: Number of co-enabled transitions 974 [2023-08-24 11:50:19,887 INFO L134 LiptonReduction]: Checked pairs total: 1733 [2023-08-24 11:50:19,888 INFO L136 LiptonReduction]: Total number of compositions: 58 [2023-08-24 11:50:19,902 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 11:50:19,907 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=false, 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;@72e46185, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 11:50:19,908 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-24 11:50:19,916 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 11:50:19,916 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-08-24 11:50:19,916 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:50:19,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:50:19,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:50:19,917 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 11:50:19,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:50:19,921 INFO L85 PathProgramCache]: Analyzing trace with hash 55464821, now seen corresponding path program 1 times [2023-08-24 11:50:19,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:50:19,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348367560] [2023-08-24 11:50:19,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:50:19,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:50:20,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:50:20,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:50:20,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:50:20,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348367560] [2023-08-24 11:50:20,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348367560] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:50:20,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:50:20,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 11:50:20,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686258586] [2023-08-24 11:50:20,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:50:20,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 11:50:20,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:50:20,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 11:50:20,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 11:50:20,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 142 [2023-08-24 11:50:20,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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) [2023-08-24 11:50:20,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:50:20,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 142 [2023-08-24 11:50:20,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:50:20,330 INFO L124 PetriNetUnfolderBase]: 143/259 cut-off events. [2023-08-24 11:50:20,331 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-24 11:50:20,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 530 conditions, 259 events. 143/259 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1000 event pairs, 53 based on Foata normal form. 9/267 useless extension candidates. Maximal degree in co-relation 519. Up to 154 conditions per place. [2023-08-24 11:50:20,335 INFO L140 encePairwiseOnDemand]: 138/142 looper letters, 17 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2023-08-24 11:50:20,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 21 transitions, 89 flow [2023-08-24 11:50:20,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:50:20,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:50:20,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2023-08-24 11:50:20,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.57981220657277 [2023-08-24 11:50:20,350 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 247 transitions. [2023-08-24 11:50:20,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 247 transitions. [2023-08-24 11:50:20,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:50:20,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 247 transitions. [2023-08-24 11:50:20,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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) [2023-08-24 11:50:20,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 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) [2023-08-24 11:50:20,364 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 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) [2023-08-24 11:50:20,366 INFO L175 Difference]: Start difference. First operand has 26 places, 17 transitions, 43 flow. Second operand 3 states and 247 transitions. [2023-08-24 11:50:20,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 21 transitions, 89 flow [2023-08-24 11:50:20,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 21 transitions, 86 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-24 11:50:20,369 INFO L231 Difference]: Finished difference. Result has 26 places, 16 transitions, 46 flow [2023-08-24 11:50:20,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=26, PETRI_TRANSITIONS=16} [2023-08-24 11:50:20,373 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2023-08-24 11:50:20,373 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 16 transitions, 46 flow [2023-08-24 11:50:20,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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) [2023-08-24 11:50:20,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:50:20,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:50:20,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 11:50:20,374 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 11:50:20,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:50:20,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1719408301, now seen corresponding path program 1 times [2023-08-24 11:50:20,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:50:20,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929804021] [2023-08-24 11:50:20,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:50:20,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:50:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:50:20,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:50:20,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:50:20,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929804021] [2023-08-24 11:50:20,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929804021] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:50:20,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:50:20,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 11:50:20,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845407347] [2023-08-24 11:50:20,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:50:20,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 11:50:20,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:50:20,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 11:50:20,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 11:50:20,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 142 [2023-08-24 11:50:20,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 46 flow. Second operand has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 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) [2023-08-24 11:50:20,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:50:20,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 142 [2023-08-24 11:50:20,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:50:20,601 INFO L124 PetriNetUnfolderBase]: 223/400 cut-off events. [2023-08-24 11:50:20,601 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-24 11:50:20,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 879 conditions, 400 events. 223/400 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1622 event pairs, 51 based on Foata normal form. 24/424 useless extension candidates. Maximal degree in co-relation 868. Up to 168 conditions per place. [2023-08-24 11:50:20,607 INFO L140 encePairwiseOnDemand]: 138/142 looper letters, 23 selfloop transitions, 3 changer transitions 3/30 dead transitions. [2023-08-24 11:50:20,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 137 flow [2023-08-24 11:50:20,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 11:50:20,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 11:50:20,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 319 transitions. [2023-08-24 11:50:20,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5616197183098591 [2023-08-24 11:50:20,611 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 319 transitions. [2023-08-24 11:50:20,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 319 transitions. [2023-08-24 11:50:20,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:50:20,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 319 transitions. [2023-08-24 11:50:20,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.75) internal successors, (319), 4 states have internal predecessors, (319), 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) [2023-08-24 11:50:20,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 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) [2023-08-24 11:50:20,613 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 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) [2023-08-24 11:50:20,614 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 46 flow. Second operand 4 states and 319 transitions. [2023-08-24 11:50:20,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 137 flow [2023-08-24 11:50:20,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 30 transitions, 131 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 11:50:20,615 INFO L231 Difference]: Finished difference. Result has 29 places, 16 transitions, 56 flow [2023-08-24 11:50:20,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=56, PETRI_PLACES=29, PETRI_TRANSITIONS=16} [2023-08-24 11:50:20,615 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2023-08-24 11:50:20,615 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 16 transitions, 56 flow [2023-08-24 11:50:20,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 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) [2023-08-24 11:50:20,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:50:20,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:50:20,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 11:50:20,617 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 11:50:20,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:50:20,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1762070732, now seen corresponding path program 1 times [2023-08-24 11:50:20,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:50:20,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963824328] [2023-08-24 11:50:20,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:50:20,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:50:20,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:50:20,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:50:20,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:50:20,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963824328] [2023-08-24 11:50:20,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963824328] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:50:20,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:50:20,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 11:50:20,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846998767] [2023-08-24 11:50:20,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:50:20,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 11:50:20,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:50:20,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 11:50:20,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 11:50:20,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 142 [2023-08-24 11:50:20,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 16 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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) [2023-08-24 11:50:20,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:50:20,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 142 [2023-08-24 11:50:20,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:50:20,774 INFO L124 PetriNetUnfolderBase]: 82/156 cut-off events. [2023-08-24 11:50:20,775 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2023-08-24 11:50:20,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 156 events. 82/156 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 474 event pairs, 26 based on Foata normal form. 6/161 useless extension candidates. Maximal degree in co-relation 409. Up to 123 conditions per place. [2023-08-24 11:50:20,777 INFO L140 encePairwiseOnDemand]: 137/142 looper letters, 20 selfloop transitions, 4 changer transitions 0/26 dead transitions. [2023-08-24 11:50:20,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 26 transitions, 136 flow [2023-08-24 11:50:20,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:50:20,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:50:20,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-08-24 11:50:20,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5727699530516432 [2023-08-24 11:50:20,778 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-08-24 11:50:20,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-08-24 11:50:20,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:50:20,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-08-24 11:50:20,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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) [2023-08-24 11:50:20,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 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) [2023-08-24 11:50:20,781 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 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) [2023-08-24 11:50:20,782 INFO L175 Difference]: Start difference. First operand has 29 places, 16 transitions, 56 flow. Second operand 3 states and 244 transitions. [2023-08-24 11:50:20,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 26 transitions, 136 flow [2023-08-24 11:50:20,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 26 transitions, 119 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-24 11:50:20,784 INFO L231 Difference]: Finished difference. Result has 28 places, 19 transitions, 70 flow [2023-08-24 11:50:20,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=28, PETRI_TRANSITIONS=19} [2023-08-24 11:50:20,785 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2023-08-24 11:50:20,788 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 19 transitions, 70 flow [2023-08-24 11:50:20,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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) [2023-08-24 11:50:20,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:50:20,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:50:20,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 11:50:20,789 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 11:50:20,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:50:20,790 INFO L85 PathProgramCache]: Analyzing trace with hash -375248793, now seen corresponding path program 1 times [2023-08-24 11:50:20,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:50:20,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478480068] [2023-08-24 11:50:20,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:50:20,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:50:20,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:50:20,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:50:20,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:50:20,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478480068] [2023-08-24 11:50:20,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478480068] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:50:20,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:50:20,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 11:50:20,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716612592] [2023-08-24 11:50:20,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:50:20,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 11:50:20,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:50:20,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 11:50:20,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 11:50:20,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 142 [2023-08-24 11:50:20,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 19 transitions, 70 flow. Second operand has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 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) [2023-08-24 11:50:20,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:50:20,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 142 [2023-08-24 11:50:20,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:50:20,934 INFO L124 PetriNetUnfolderBase]: 55/115 cut-off events. [2023-08-24 11:50:20,935 INFO L125 PetriNetUnfolderBase]: For 26/30 co-relation queries the response was YES. [2023-08-24 11:50:20,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 115 events. 55/115 cut-off events. For 26/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 311 event pairs, 14 based on Foata normal form. 13/127 useless extension candidates. Maximal degree in co-relation 335. Up to 49 conditions per place. [2023-08-24 11:50:20,937 INFO L140 encePairwiseOnDemand]: 137/142 looper letters, 24 selfloop transitions, 7 changer transitions 0/33 dead transitions. [2023-08-24 11:50:20,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 33 transitions, 177 flow [2023-08-24 11:50:20,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 11:50:20,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 11:50:20,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 324 transitions. [2023-08-24 11:50:20,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5704225352112676 [2023-08-24 11:50:20,938 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 324 transitions. [2023-08-24 11:50:20,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 324 transitions. [2023-08-24 11:50:20,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:50:20,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 324 transitions. [2023-08-24 11:50:20,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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) [2023-08-24 11:50:20,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 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) [2023-08-24 11:50:20,941 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 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) [2023-08-24 11:50:20,941 INFO L175 Difference]: Start difference. First operand has 28 places, 19 transitions, 70 flow. Second operand 4 states and 324 transitions. [2023-08-24 11:50:20,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 33 transitions, 177 flow [2023-08-24 11:50:20,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 33 transitions, 173 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 11:50:20,943 INFO L231 Difference]: Finished difference. Result has 31 places, 22 transitions, 106 flow [2023-08-24 11:50:20,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=31, PETRI_TRANSITIONS=22} [2023-08-24 11:50:20,944 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2023-08-24 11:50:20,944 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 106 flow [2023-08-24 11:50:20,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 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) [2023-08-24 11:50:20,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:50:20,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:50:20,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 11:50:20,945 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 11:50:20,946 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:50:20,946 INFO L85 PathProgramCache]: Analyzing trace with hash 120232283, now seen corresponding path program 1 times [2023-08-24 11:50:20,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:50:20,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834198442] [2023-08-24 11:50:20,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:50:20,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:50:20,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:50:21,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:50:21,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:50:21,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834198442] [2023-08-24 11:50:21,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834198442] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:50:21,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:50:21,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 11:50:21,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304013209] [2023-08-24 11:50:21,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:50:21,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 11:50:21,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:50:21,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 11:50:21,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-24 11:50:21,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 142 [2023-08-24 11:50:21,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 22 transitions, 106 flow. Second operand has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 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) [2023-08-24 11:50:21,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:50:21,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 142 [2023-08-24 11:50:21,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:50:21,104 INFO L124 PetriNetUnfolderBase]: 46/97 cut-off events. [2023-08-24 11:50:21,104 INFO L125 PetriNetUnfolderBase]: For 114/122 co-relation queries the response was YES. [2023-08-24 11:50:21,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 97 events. 46/97 cut-off events. For 114/122 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 258 event pairs, 12 based on Foata normal form. 13/109 useless extension candidates. Maximal degree in co-relation 315. Up to 40 conditions per place. [2023-08-24 11:50:21,105 INFO L140 encePairwiseOnDemand]: 137/142 looper letters, 21 selfloop transitions, 10 changer transitions 0/33 dead transitions. [2023-08-24 11:50:21,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 33 transitions, 201 flow [2023-08-24 11:50:21,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 11:50:21,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 11:50:21,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 397 transitions. [2023-08-24 11:50:21,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5591549295774648 [2023-08-24 11:50:21,118 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 397 transitions. [2023-08-24 11:50:21,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 397 transitions. [2023-08-24 11:50:21,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:50:21,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 397 transitions. [2023-08-24 11:50:21,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.4) internal successors, (397), 5 states have internal predecessors, (397), 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) [2023-08-24 11:50:21,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 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) [2023-08-24 11:50:21,121 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 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) [2023-08-24 11:50:21,121 INFO L175 Difference]: Start difference. First operand has 31 places, 22 transitions, 106 flow. Second operand 5 states and 397 transitions. [2023-08-24 11:50:21,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 33 transitions, 201 flow [2023-08-24 11:50:21,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 33 transitions, 181 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-24 11:50:21,123 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 116 flow [2023-08-24 11:50:21,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=116, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2023-08-24 11:50:21,125 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2023-08-24 11:50:21,125 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 116 flow [2023-08-24 11:50:21,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 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) [2023-08-24 11:50:21,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:50:21,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:50:21,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 11:50:21,126 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 11:50:21,127 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:50:21,127 INFO L85 PathProgramCache]: Analyzing trace with hash 777331100, now seen corresponding path program 1 times [2023-08-24 11:50:21,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:50:21,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965904573] [2023-08-24 11:50:21,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:50:21,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:50:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:50:21,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:50:21,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:50:21,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965904573] [2023-08-24 11:50:21,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965904573] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:50:21,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:50:21,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 11:50:21,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10581810] [2023-08-24 11:50:21,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:50:21,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 11:50:21,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:50:21,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 11:50:21,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 11:50:21,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 142 [2023-08-24 11:50:21,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 116 flow. Second operand has 5 states, 5 states have (on average 72.2) internal successors, (361), 5 states have internal predecessors, (361), 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) [2023-08-24 11:50:21,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:50:21,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 142 [2023-08-24 11:50:21,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:50:21,266 INFO L124 PetriNetUnfolderBase]: 96/192 cut-off events. [2023-08-24 11:50:21,266 INFO L125 PetriNetUnfolderBase]: For 285/285 co-relation queries the response was YES. [2023-08-24 11:50:21,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 657 conditions, 192 events. 96/192 cut-off events. For 285/285 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 615 event pairs, 12 based on Foata normal form. 1/193 useless extension candidates. Maximal degree in co-relation 643. Up to 76 conditions per place. [2023-08-24 11:50:21,267 INFO L140 encePairwiseOnDemand]: 137/142 looper letters, 26 selfloop transitions, 3 changer transitions 23/52 dead transitions. [2023-08-24 11:50:21,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 52 transitions, 365 flow [2023-08-24 11:50:21,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 11:50:21,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 11:50:21,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 455 transitions. [2023-08-24 11:50:21,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.534037558685446 [2023-08-24 11:50:21,268 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 455 transitions. [2023-08-24 11:50:21,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 455 transitions. [2023-08-24 11:50:21,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:50:21,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 455 transitions. [2023-08-24 11:50:21,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 75.83333333333333) internal successors, (455), 6 states have internal predecessors, (455), 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) [2023-08-24 11:50:21,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 142.0) internal successors, (994), 7 states have internal predecessors, (994), 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) [2023-08-24 11:50:21,271 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 142.0) internal successors, (994), 7 states have internal predecessors, (994), 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) [2023-08-24 11:50:21,271 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 116 flow. Second operand 6 states and 455 transitions. [2023-08-24 11:50:21,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 52 transitions, 365 flow [2023-08-24 11:50:21,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 52 transitions, 311 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-08-24 11:50:21,273 INFO L231 Difference]: Finished difference. Result has 37 places, 22 transitions, 100 flow [2023-08-24 11:50:21,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=100, PETRI_PLACES=37, PETRI_TRANSITIONS=22} [2023-08-24 11:50:21,274 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 11 predicate places. [2023-08-24 11:50:21,274 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 22 transitions, 100 flow [2023-08-24 11:50:21,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.2) internal successors, (361), 5 states have internal predecessors, (361), 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) [2023-08-24 11:50:21,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:50:21,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:50:21,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 11:50:21,275 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 11:50:21,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:50:21,275 INFO L85 PathProgramCache]: Analyzing trace with hash 788939080, now seen corresponding path program 2 times [2023-08-24 11:50:21,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:50:21,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834053649] [2023-08-24 11:50:21,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:50:21,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:50:21,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:50:21,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:50:21,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:50:21,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834053649] [2023-08-24 11:50:21,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834053649] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:50:21,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:50:21,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 11:50:21,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503272727] [2023-08-24 11:50:21,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:50:21,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 11:50:21,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:50:21,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 11:50:21,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 11:50:21,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 142 [2023-08-24 11:50:21,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 22 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 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) [2023-08-24 11:50:21,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:50:21,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 142 [2023-08-24 11:50:21,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:50:21,364 INFO L124 PetriNetUnfolderBase]: 34/80 cut-off events. [2023-08-24 11:50:21,364 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2023-08-24 11:50:21,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 80 events. 34/80 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 181 event pairs, 6 based on Foata normal form. 1/81 useless extension candidates. Maximal degree in co-relation 266. Up to 52 conditions per place. [2023-08-24 11:50:21,365 INFO L140 encePairwiseOnDemand]: 139/142 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2023-08-24 11:50:21,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 29 transitions, 188 flow [2023-08-24 11:50:21,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 11:50:21,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 11:50:21,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 313 transitions. [2023-08-24 11:50:21,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.551056338028169 [2023-08-24 11:50:21,366 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 313 transitions. [2023-08-24 11:50:21,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 313 transitions. [2023-08-24 11:50:21,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:50:21,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 313 transitions. [2023-08-24 11:50:21,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 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) [2023-08-24 11:50:21,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 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) [2023-08-24 11:50:21,368 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 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) [2023-08-24 11:50:21,368 INFO L175 Difference]: Start difference. First operand has 37 places, 22 transitions, 100 flow. Second operand 4 states and 313 transitions. [2023-08-24 11:50:21,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 29 transitions, 188 flow [2023-08-24 11:50:21,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 29 transitions, 184 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-24 11:50:21,369 INFO L231 Difference]: Finished difference. Result has 35 places, 0 transitions, 0 flow [2023-08-24 11:50:21,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=35, PETRI_TRANSITIONS=0} [2023-08-24 11:50:21,369 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 9 predicate places. [2023-08-24 11:50:21,369 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 0 transitions, 0 flow [2023-08-24 11:50:21,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 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) [2023-08-24 11:50:21,371 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-24 11:50:21,372 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-24 11:50:21,372 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-24 11:50:21,372 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-24 11:50:21,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 11:50:21,373 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2023-08-24 11:50:21,375 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 11:50:21,375 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 11:50:21,377 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 11:50:21 BasicIcfg [2023-08-24 11:50:21,377 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 11:50:21,378 INFO L158 Benchmark]: Toolchain (without parser) took 3905.72ms. Allocated memory was 339.7MB in the beginning and 482.3MB in the end (delta: 142.6MB). Free memory was 315.0MB in the beginning and 370.3MB in the end (delta: -55.3MB). Peak memory consumption was 87.7MB. Max. memory is 16.0GB. [2023-08-24 11:50:21,378 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 339.7MB. Free memory is still 316.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 11:50:21,378 INFO L158 Benchmark]: CACSL2BoogieTranslator took 353.72ms. Allocated memory is still 339.7MB. Free memory was 314.5MB in the beginning and 294.5MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-24 11:50:21,378 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.55ms. Allocated memory is still 339.7MB. Free memory was 294.5MB in the beginning and 292.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 11:50:21,379 INFO L158 Benchmark]: Boogie Preprocessor took 26.62ms. Allocated memory is still 339.7MB. Free memory was 292.5MB in the beginning and 291.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 11:50:21,379 INFO L158 Benchmark]: RCFGBuilder took 321.98ms. Allocated memory is still 339.7MB. Free memory was 291.0MB in the beginning and 277.2MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-24 11:50:21,379 INFO L158 Benchmark]: TraceAbstraction took 3156.17ms. Allocated memory was 339.7MB in the beginning and 482.3MB in the end (delta: 142.6MB). Free memory was 276.3MB in the beginning and 370.3MB in the end (delta: -94.0MB). Peak memory consumption was 50.0MB. Max. memory is 16.0GB. [2023-08-24 11:50:21,380 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 339.7MB. Free memory is still 316.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 353.72ms. Allocated memory is still 339.7MB. Free memory was 314.5MB in the beginning and 294.5MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 43.55ms. Allocated memory is still 339.7MB. Free memory was 294.5MB in the beginning and 292.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 26.62ms. Allocated memory is still 339.7MB. Free memory was 292.5MB in the beginning and 291.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 321.98ms. Allocated memory is still 339.7MB. Free memory was 291.0MB in the beginning and 277.2MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 3156.17ms. Allocated memory was 339.7MB in the beginning and 482.3MB in the end (delta: 142.6MB). Free memory was 276.3MB in the beginning and 370.3MB in the end (delta: -94.0MB). Peak memory consumption was 50.0MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 78 PlacesBefore, 26 PlacesAfterwards, 69 TransitionsBefore, 17 TransitionsAfterwards, 974 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 0 ChoiceCompositions, 58 TotalNumberOfCompositions, 1733 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1063, independent: 994, independent conditional: 0, independent unconditional: 994, dependent: 69, dependent conditional: 0, dependent unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 560, independent: 540, independent conditional: 0, independent unconditional: 540, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1063, independent: 454, independent conditional: 0, independent unconditional: 454, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 560, unknown conditional: 0, unknown unconditional: 560] , Statistics on independence cache: Total cache size (in pairs): 43, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 106 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.1s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 92 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 92 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 267 IncrementalHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 3 mSDtfsCounter, 267 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=116occurred in iteration=5, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 240 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-24 11:50:21,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...