/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/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 11:51:08,077 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 11:51:08,143 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 11:51:08,148 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 11:51:08,149 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 11:51:08,180 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 11:51:08,181 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 11:51:08,181 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 11:51:08,182 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 11:51:08,182 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 11:51:08,182 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 11:51:08,183 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 11:51:08,183 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 11:51:08,183 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 11:51:08,184 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 11:51:08,184 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 11:51:08,184 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 11:51:08,185 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 11:51:08,185 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 11:51:08,185 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 11:51:08,186 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 11:51:08,186 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 11:51:08,187 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 11:51:08,187 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 11:51:08,187 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 11:51:08,188 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 11:51:08,188 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 11:51:08,189 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 11:51:08,189 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 11:51:08,189 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 11:51:08,190 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 11:51:08,190 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 11:51:08,190 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 11:51:08,191 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 11:51:08,191 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 11:51:08,191 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-24 11:51:08,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 11:51:08,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 11:51:08,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 11:51:08,552 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 11:51:08,553 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 11:51:08,555 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-24 11:51:09,779 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 11:51:10,017 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 11:51:10,017 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-24 11:51:10,029 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc8f31bc5/af05f6b94e1e4fedbb70c4caadddae79/FLAGde75517b2 [2023-08-24 11:51:10,041 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc8f31bc5/af05f6b94e1e4fedbb70c4caadddae79 [2023-08-24 11:51:10,043 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 11:51:10,044 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 11:51:10,045 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 11:51:10,045 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 11:51:10,047 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 11:51:10,048 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 11:51:10" (1/1) ... [2023-08-24 11:51:10,049 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a59fc26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:10, skipping insertion in model container [2023-08-24 11:51:10,049 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 11:51:10" (1/1) ... [2023-08-24 11:51:10,101 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 11:51:10,212 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/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-24 11:51:10,333 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 11:51:10,346 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 11:51:10,363 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/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-24 11:51:10,377 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-24 11:51:10,379 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-24 11:51:10,406 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 11:51:10,444 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 11:51:10,444 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 11:51:10,450 INFO L206 MainTranslator]: Completed translation [2023-08-24 11:51:10,451 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:10 WrapperNode [2023-08-24 11:51:10,451 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 11:51:10,452 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 11:51:10,452 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 11:51:10,452 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 11:51:10,458 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:10" (1/1) ... [2023-08-24 11:51:10,478 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:10" (1/1) ... [2023-08-24 11:51:10,500 INFO L138 Inliner]: procedures = 177, calls = 66, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 85 [2023-08-24 11:51:10,501 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 11:51:10,501 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 11:51:10,502 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 11:51:10,502 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 11:51:10,509 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:10" (1/1) ... [2023-08-24 11:51:10,509 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:10" (1/1) ... [2023-08-24 11:51:10,511 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:10" (1/1) ... [2023-08-24 11:51:10,512 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:10" (1/1) ... [2023-08-24 11:51:10,517 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:10" (1/1) ... [2023-08-24 11:51:10,518 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:10" (1/1) ... [2023-08-24 11:51:10,520 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:10" (1/1) ... [2023-08-24 11:51:10,521 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:10" (1/1) ... [2023-08-24 11:51:10,523 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 11:51:10,524 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 11:51:10,524 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 11:51:10,525 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 11:51:10,525 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:10" (1/1) ... [2023-08-24 11:51:10,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 11:51:10,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 11:51:10,558 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 11:51:10,568 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 11:51:10,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 11:51:10,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 11:51:10,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 11:51:10,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 11:51:10,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 11:51:10,597 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-24 11:51:10,597 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-24 11:51:10,597 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-24 11:51:10,597 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-24 11:51:10,597 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-24 11:51:10,597 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-24 11:51:10,597 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-24 11:51:10,598 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-24 11:51:10,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 11:51:10,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 11:51:10,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 11:51:10,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 11:51:10,601 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 11:51:10,722 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 11:51:10,723 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 11:51:10,965 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 11:51:10,972 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 11:51:10,972 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 11:51:10,974 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 11:51:10 BoogieIcfgContainer [2023-08-24 11:51:10,975 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 11:51:10,977 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 11:51:10,977 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 11:51:10,979 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 11:51:10,979 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 11:51:10" (1/3) ... [2023-08-24 11:51:10,980 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4734d365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 11:51:10, skipping insertion in model container [2023-08-24 11:51:10,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:10" (2/3) ... [2023-08-24 11:51:10,980 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4734d365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 11:51:10, skipping insertion in model container [2023-08-24 11:51:10,989 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 11:51:10" (3/3) ... [2023-08-24 11:51:10,990 INFO L112 eAbstractionObserver]: Analyzing ICFG thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-24 11:51:11,006 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 11:51:11,006 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 11:51:11,006 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 11:51:11,095 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 11:51:11,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 104 transitions, 228 flow [2023-08-24 11:51:11,197 INFO L124 PetriNetUnfolderBase]: 2/100 cut-off events. [2023-08-24 11:51:11,197 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:51:11,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 100 events. 2/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 58 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 81. Up to 2 conditions per place. [2023-08-24 11:51:11,202 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 104 transitions, 228 flow [2023-08-24 11:51:11,208 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 86 transitions, 184 flow [2023-08-24 11:51:11,211 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 11:51:11,222 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 86 transitions, 184 flow [2023-08-24 11:51:11,224 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 86 transitions, 184 flow [2023-08-24 11:51:11,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 86 transitions, 184 flow [2023-08-24 11:51:11,256 INFO L124 PetriNetUnfolderBase]: 1/86 cut-off events. [2023-08-24 11:51:11,256 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:51:11,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 86 events. 1/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2023-08-24 11:51:11,259 INFO L119 LiptonReduction]: Number of co-enabled transitions 1704 [2023-08-24 11:51:13,699 INFO L134 LiptonReduction]: Checked pairs total: 3354 [2023-08-24 11:51:13,700 INFO L136 LiptonReduction]: Total number of compositions: 66 [2023-08-24 11:51:13,711 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 11:51:13,716 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;@7b4aa8ed, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 11:51:13,717 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-24 11:51:13,722 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 11:51:13,722 INFO L124 PetriNetUnfolderBase]: 0/20 cut-off events. [2023-08-24 11:51:13,723 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:51:13,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:51:13,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:51:13,724 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 2 more)] === [2023-08-24 11:51:13,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:51:13,728 INFO L85 PathProgramCache]: Analyzing trace with hash -411439494, now seen corresponding path program 1 times [2023-08-24 11:51:13,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:51:13,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18340959] [2023-08-24 11:51:13,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:51:13,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:51:13,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:51:14,223 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 11:51:14,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:51:14,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18340959] [2023-08-24 11:51:14,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18340959] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:51:14,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:51:14,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 11:51:14,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926059987] [2023-08-24 11:51:14,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:51:14,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 11:51:14,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:51:14,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 11:51:14,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 11:51:14,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 170 [2023-08-24 11:51:14,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 22 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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 11:51:14,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:51:14,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 170 [2023-08-24 11:51:14,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:51:14,442 INFO L124 PetriNetUnfolderBase]: 700/1137 cut-off events. [2023-08-24 11:51:14,443 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-24 11:51:14,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2244 conditions, 1137 events. 700/1137 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 5694 event pairs, 416 based on Foata normal form. 1/1138 useless extension candidates. Maximal degree in co-relation 2232. Up to 1013 conditions per place. [2023-08-24 11:51:14,454 INFO L140 encePairwiseOnDemand]: 164/170 looper letters, 24 selfloop transitions, 5 changer transitions 0/33 dead transitions. [2023-08-24 11:51:14,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 33 transitions, 145 flow [2023-08-24 11:51:14,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:51:14,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:51:14,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 294 transitions. [2023-08-24 11:51:14,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5764705882352941 [2023-08-24 11:51:14,467 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 294 transitions. [2023-08-24 11:51:14,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 294 transitions. [2023-08-24 11:51:14,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:51:14,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 294 transitions. [2023-08-24 11:51:14,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 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 11:51:14,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 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 11:51:14,484 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 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 11:51:14,486 INFO L175 Difference]: Start difference. First operand has 35 places, 22 transitions, 56 flow. Second operand 3 states and 294 transitions. [2023-08-24 11:51:14,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 33 transitions, 145 flow [2023-08-24 11:51:14,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 33 transitions, 138 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-24 11:51:14,506 INFO L231 Difference]: Finished difference. Result has 34 places, 26 transitions, 85 flow [2023-08-24 11:51:14,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=34, PETRI_TRANSITIONS=26} [2023-08-24 11:51:14,511 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2023-08-24 11:51:14,511 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 85 flow [2023-08-24 11:51:14,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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 11:51:14,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:51:14,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:51:14,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 11:51:14,512 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 2 more)] === [2023-08-24 11:51:14,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:51:14,520 INFO L85 PathProgramCache]: Analyzing trace with hash 130277189, now seen corresponding path program 1 times [2023-08-24 11:51:14,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:51:14,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162548237] [2023-08-24 11:51:14,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:51:14,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:51:14,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:51:14,663 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 11:51:14,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:51:14,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162548237] [2023-08-24 11:51:14,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162548237] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:51:14,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:51:14,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 11:51:14,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761550316] [2023-08-24 11:51:14,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:51:14,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 11:51:14,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:51:14,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 11:51:14,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 11:51:14,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 170 [2023-08-24 11:51:14,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 85 flow. Second operand has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 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 11:51:14,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:51:14,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 170 [2023-08-24 11:51:14,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:51:14,785 INFO L124 PetriNetUnfolderBase]: 623/998 cut-off events. [2023-08-24 11:51:14,785 INFO L125 PetriNetUnfolderBase]: For 203/203 co-relation queries the response was YES. [2023-08-24 11:51:14,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2413 conditions, 998 events. 623/998 cut-off events. For 203/203 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4743 event pairs, 201 based on Foata normal form. 26/1011 useless extension candidates. Maximal degree in co-relation 2402. Up to 568 conditions per place. [2023-08-24 11:51:14,795 INFO L140 encePairwiseOnDemand]: 167/170 looper letters, 26 selfloop transitions, 3 changer transitions 0/33 dead transitions. [2023-08-24 11:51:14,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 33 transitions, 163 flow [2023-08-24 11:51:14,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:51:14,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:51:14,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2023-08-24 11:51:14,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5686274509803921 [2023-08-24 11:51:14,800 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 290 transitions. [2023-08-24 11:51:14,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 290 transitions. [2023-08-24 11:51:14,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:51:14,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 290 transitions. [2023-08-24 11:51:14,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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 11:51:14,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 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 11:51:14,805 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 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 11:51:14,805 INFO L175 Difference]: Start difference. First operand has 34 places, 26 transitions, 85 flow. Second operand 3 states and 290 transitions. [2023-08-24 11:51:14,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 33 transitions, 163 flow [2023-08-24 11:51:14,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 11:51:14,807 INFO L231 Difference]: Finished difference. Result has 36 places, 26 transitions, 91 flow [2023-08-24 11:51:14,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2023-08-24 11:51:14,811 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2023-08-24 11:51:14,811 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 91 flow [2023-08-24 11:51:14,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 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 11:51:14,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:51:14,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:51:14,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 11:51:14,817 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 2 more)] === [2023-08-24 11:51:14,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:51:14,819 INFO L85 PathProgramCache]: Analyzing trace with hash 130276693, now seen corresponding path program 1 times [2023-08-24 11:51:14,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:51:14,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909179338] [2023-08-24 11:51:14,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:51:14,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:51:14,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:51:14,954 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 11:51:14,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:51:14,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909179338] [2023-08-24 11:51:14,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909179338] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:51:14,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:51:14,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 11:51:14,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229741784] [2023-08-24 11:51:14,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:51:14,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 11:51:14,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:51:14,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 11:51:14,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 11:51:14,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 170 [2023-08-24 11:51:14,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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 11:51:14,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:51:14,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 170 [2023-08-24 11:51:14,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:51:15,066 INFO L124 PetriNetUnfolderBase]: 572/952 cut-off events. [2023-08-24 11:51:15,066 INFO L125 PetriNetUnfolderBase]: For 338/338 co-relation queries the response was YES. [2023-08-24 11:51:15,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2376 conditions, 952 events. 572/952 cut-off events. For 338/338 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4807 event pairs, 158 based on Foata normal form. 18/965 useless extension candidates. Maximal degree in co-relation 2363. Up to 651 conditions per place. [2023-08-24 11:51:15,073 INFO L140 encePairwiseOnDemand]: 167/170 looper letters, 30 selfloop transitions, 3 changer transitions 0/37 dead transitions. [2023-08-24 11:51:15,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 37 transitions, 192 flow [2023-08-24 11:51:15,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:51:15,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:51:15,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 312 transitions. [2023-08-24 11:51:15,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.611764705882353 [2023-08-24 11:51:15,075 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 312 transitions. [2023-08-24 11:51:15,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 312 transitions. [2023-08-24 11:51:15,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:51:15,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 312 transitions. [2023-08-24 11:51:15,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 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 11:51:15,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 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 11:51:15,077 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 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 11:51:15,077 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 91 flow. Second operand 3 states and 312 transitions. [2023-08-24 11:51:15,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 37 transitions, 192 flow [2023-08-24 11:51:15,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 37 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 11:51:15,081 INFO L231 Difference]: Finished difference. Result has 37 places, 26 transitions, 96 flow [2023-08-24 11:51:15,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=37, PETRI_TRANSITIONS=26} [2023-08-24 11:51:15,081 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2023-08-24 11:51:15,081 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 26 transitions, 96 flow [2023-08-24 11:51:15,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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 11:51:15,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:51:15,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:51:15,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 11:51:15,082 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 2 more)] === [2023-08-24 11:51:15,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:51:15,083 INFO L85 PathProgramCache]: Analyzing trace with hash -256373396, now seen corresponding path program 1 times [2023-08-24 11:51:15,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:51:15,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150197741] [2023-08-24 11:51:15,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:51:15,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:51:15,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:51:15,255 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 11:51:15,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:51:15,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150197741] [2023-08-24 11:51:15,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150197741] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:51:15,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:51:15,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 11:51:15,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104616776] [2023-08-24 11:51:15,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:51:15,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 11:51:15,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:51:15,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 11:51:15,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 11:51:15,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 170 [2023-08-24 11:51:15,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 26 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 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 11:51:15,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:51:15,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 170 [2023-08-24 11:51:15,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:51:15,366 INFO L124 PetriNetUnfolderBase]: 540/902 cut-off events. [2023-08-24 11:51:15,366 INFO L125 PetriNetUnfolderBase]: For 441/441 co-relation queries the response was YES. [2023-08-24 11:51:15,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2369 conditions, 902 events. 540/902 cut-off events. For 441/441 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4491 event pairs, 122 based on Foata normal form. 12/909 useless extension candidates. Maximal degree in co-relation 2355. Up to 575 conditions per place. [2023-08-24 11:51:15,373 INFO L140 encePairwiseOnDemand]: 167/170 looper letters, 28 selfloop transitions, 3 changer transitions 0/35 dead transitions. [2023-08-24 11:51:15,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 188 flow [2023-08-24 11:51:15,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:51:15,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:51:15,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 292 transitions. [2023-08-24 11:51:15,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5725490196078431 [2023-08-24 11:51:15,375 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 292 transitions. [2023-08-24 11:51:15,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 292 transitions. [2023-08-24 11:51:15,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:51:15,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 292 transitions. [2023-08-24 11:51:15,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 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 11:51:15,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 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 11:51:15,378 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 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 11:51:15,378 INFO L175 Difference]: Start difference. First operand has 37 places, 26 transitions, 96 flow. Second operand 3 states and 292 transitions. [2023-08-24 11:51:15,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 188 flow [2023-08-24 11:51:15,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 35 transitions, 180 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 11:51:15,380 INFO L231 Difference]: Finished difference. Result has 38 places, 26 transitions, 101 flow [2023-08-24 11:51:15,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=38, PETRI_TRANSITIONS=26} [2023-08-24 11:51:15,381 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2023-08-24 11:51:15,382 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 26 transitions, 101 flow [2023-08-24 11:51:15,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 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 11:51:15,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:51:15,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:51:15,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 11:51:15,383 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 2 more)] === [2023-08-24 11:51:15,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:51:15,383 INFO L85 PathProgramCache]: Analyzing trace with hash -170991683, now seen corresponding path program 1 times [2023-08-24 11:51:15,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:51:15,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739744203] [2023-08-24 11:51:15,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:51:15,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:51:15,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:51:15,532 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 11:51:15,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:51:15,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739744203] [2023-08-24 11:51:15,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739744203] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:51:15,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:51:15,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 11:51:15,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973514869] [2023-08-24 11:51:15,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:51:15,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 11:51:15,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:51:15,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 11:51:15,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 11:51:15,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 170 [2023-08-24 11:51:15,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 26 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 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 11:51:15,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:51:15,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 170 [2023-08-24 11:51:15,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:51:15,685 INFO L124 PetriNetUnfolderBase]: 849/1337 cut-off events. [2023-08-24 11:51:15,685 INFO L125 PetriNetUnfolderBase]: For 882/882 co-relation queries the response was YES. [2023-08-24 11:51:15,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3546 conditions, 1337 events. 849/1337 cut-off events. For 882/882 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6606 event pairs, 259 based on Foata normal form. 36/1368 useless extension candidates. Maximal degree in co-relation 3531. Up to 480 conditions per place. [2023-08-24 11:51:15,692 INFO L140 encePairwiseOnDemand]: 166/170 looper letters, 32 selfloop transitions, 3 changer transitions 4/42 dead transitions. [2023-08-24 11:51:15,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 42 transitions, 226 flow [2023-08-24 11:51:15,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 11:51:15,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 11:51:15,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 381 transitions. [2023-08-24 11:51:15,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602941176470588 [2023-08-24 11:51:15,694 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 381 transitions. [2023-08-24 11:51:15,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 381 transitions. [2023-08-24 11:51:15,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:51:15,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 381 transitions. [2023-08-24 11:51:15,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 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 11:51:15,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 170.0) internal successors, (850), 5 states have internal predecessors, (850), 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 11:51:15,698 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 170.0) internal successors, (850), 5 states have internal predecessors, (850), 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 11:51:15,698 INFO L175 Difference]: Start difference. First operand has 38 places, 26 transitions, 101 flow. Second operand 4 states and 381 transitions. [2023-08-24 11:51:15,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 42 transitions, 226 flow [2023-08-24 11:51:15,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 42 transitions, 220 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 11:51:15,703 INFO L231 Difference]: Finished difference. Result has 41 places, 25 transitions, 104 flow [2023-08-24 11:51:15,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=41, PETRI_TRANSITIONS=25} [2023-08-24 11:51:15,705 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 6 predicate places. [2023-08-24 11:51:15,705 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 25 transitions, 104 flow [2023-08-24 11:51:15,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 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 11:51:15,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:51:15,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:51:15,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 11:51:15,706 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 2 more)] === [2023-08-24 11:51:15,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:51:15,706 INFO L85 PathProgramCache]: Analyzing trace with hash -264674661, now seen corresponding path program 1 times [2023-08-24 11:51:15,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:51:15,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145811076] [2023-08-24 11:51:15,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:51:15,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:51:15,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:51:15,846 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 11:51:15,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:51:15,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145811076] [2023-08-24 11:51:15,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145811076] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:51:15,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:51:15,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 11:51:15,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997745375] [2023-08-24 11:51:15,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:51:15,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 11:51:15,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:51:15,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 11:51:15,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 11:51:15,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 170 [2023-08-24 11:51:15,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 25 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 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 11:51:15,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:51:15,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 170 [2023-08-24 11:51:15,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:51:15,986 INFO L124 PetriNetUnfolderBase]: 759/1236 cut-off events. [2023-08-24 11:51:15,987 INFO L125 PetriNetUnfolderBase]: For 1417/1426 co-relation queries the response was YES. [2023-08-24 11:51:15,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3387 conditions, 1236 events. 759/1236 cut-off events. For 1417/1426 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6122 event pairs, 231 based on Foata normal form. 39/1268 useless extension candidates. Maximal degree in co-relation 3370. Up to 406 conditions per place. [2023-08-24 11:51:15,992 INFO L140 encePairwiseOnDemand]: 166/170 looper letters, 31 selfloop transitions, 3 changer transitions 8/45 dead transitions. [2023-08-24 11:51:15,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 45 transitions, 253 flow [2023-08-24 11:51:15,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 11:51:15,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 11:51:15,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 385 transitions. [2023-08-24 11:51:15,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5661764705882353 [2023-08-24 11:51:15,994 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 385 transitions. [2023-08-24 11:51:15,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 385 transitions. [2023-08-24 11:51:15,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:51:15,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 385 transitions. [2023-08-24 11:51:15,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 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 11:51:15,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 170.0) internal successors, (850), 5 states have internal predecessors, (850), 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 11:51:15,998 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 170.0) internal successors, (850), 5 states have internal predecessors, (850), 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 11:51:15,998 INFO L175 Difference]: Start difference. First operand has 41 places, 25 transitions, 104 flow. Second operand 4 states and 385 transitions. [2023-08-24 11:51:15,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 45 transitions, 253 flow [2023-08-24 11:51:16,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 45 transitions, 231 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-24 11:51:16,004 INFO L231 Difference]: Finished difference. Result has 41 places, 24 transitions, 97 flow [2023-08-24 11:51:16,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=41, PETRI_TRANSITIONS=24} [2023-08-24 11:51:16,006 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 6 predicate places. [2023-08-24 11:51:16,006 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 24 transitions, 97 flow [2023-08-24 11:51:16,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 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 11:51:16,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:51:16,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:51:16,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 11:51:16,010 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 2 more)] === [2023-08-24 11:51:16,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:51:16,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1150327339, now seen corresponding path program 1 times [2023-08-24 11:51:16,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:51:16,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197429294] [2023-08-24 11:51:16,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:51:16,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:51:16,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:51:16,155 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 11:51:16,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:51:16,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197429294] [2023-08-24 11:51:16,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197429294] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:51:16,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:51:16,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 11:51:16,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805705561] [2023-08-24 11:51:16,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:51:16,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 11:51:16,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:51:16,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 11:51:16,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 11:51:16,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 170 [2023-08-24 11:51:16,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 24 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 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 11:51:16,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:51:16,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 170 [2023-08-24 11:51:16,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:51:16,266 INFO L124 PetriNetUnfolderBase]: 296/535 cut-off events. [2023-08-24 11:51:16,266 INFO L125 PetriNetUnfolderBase]: For 455/458 co-relation queries the response was YES. [2023-08-24 11:51:16,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1418 conditions, 535 events. 296/535 cut-off events. For 455/458 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2254 event pairs, 178 based on Foata normal form. 8/540 useless extension candidates. Maximal degree in co-relation 1402. Up to 363 conditions per place. [2023-08-24 11:51:16,270 INFO L140 encePairwiseOnDemand]: 167/170 looper letters, 29 selfloop transitions, 3 changer transitions 0/36 dead transitions. [2023-08-24 11:51:16,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 36 transitions, 200 flow [2023-08-24 11:51:16,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:51:16,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:51:16,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2023-08-24 11:51:16,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5803921568627451 [2023-08-24 11:51:16,272 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2023-08-24 11:51:16,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2023-08-24 11:51:16,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:51:16,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2023-08-24 11:51:16,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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 11:51:16,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 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 11:51:16,275 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 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 11:51:16,276 INFO L175 Difference]: Start difference. First operand has 41 places, 24 transitions, 97 flow. Second operand 3 states and 296 transitions. [2023-08-24 11:51:16,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 36 transitions, 200 flow [2023-08-24 11:51:16,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 36 transitions, 181 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-24 11:51:16,279 INFO L231 Difference]: Finished difference. Result has 39 places, 24 transitions, 91 flow [2023-08-24 11:51:16,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=39, PETRI_TRANSITIONS=24} [2023-08-24 11:51:16,280 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 4 predicate places. [2023-08-24 11:51:16,280 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 24 transitions, 91 flow [2023-08-24 11:51:16,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 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 11:51:16,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:51:16,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:51:16,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 11:51:16,281 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 11:51:16,281 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:51:16,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1124465224, now seen corresponding path program 1 times [2023-08-24 11:51:16,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:51:16,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222326674] [2023-08-24 11:51:16,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:51:16,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:51:16,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:51:16,453 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 11:51:16,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:51:16,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222326674] [2023-08-24 11:51:16,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222326674] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:51:16,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:51:16,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 11:51:16,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977198560] [2023-08-24 11:51:16,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:51:16,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 11:51:16,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:51:16,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 11:51:16,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 11:51:16,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 170 [2023-08-24 11:51:16,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 24 transitions, 91 flow. Second operand has 5 states, 5 states have (on average 88.8) internal successors, (444), 5 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:51:16,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:51:16,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 170 [2023-08-24 11:51:16,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:51:16,548 INFO L124 PetriNetUnfolderBase]: 396/661 cut-off events. [2023-08-24 11:51:16,548 INFO L125 PetriNetUnfolderBase]: For 460/469 co-relation queries the response was YES. [2023-08-24 11:51:16,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1698 conditions, 661 events. 396/661 cut-off events. For 460/469 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2691 event pairs, 184 based on Foata normal form. 24/675 useless extension candidates. Maximal degree in co-relation 1684. Up to 345 conditions per place. [2023-08-24 11:51:16,551 INFO L140 encePairwiseOnDemand]: 166/170 looper letters, 23 selfloop transitions, 3 changer transitions 5/34 dead transitions. [2023-08-24 11:51:16,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 34 transitions, 178 flow [2023-08-24 11:51:16,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 11:51:16,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 11:51:16,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2023-08-24 11:51:16,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5514705882352942 [2023-08-24 11:51:16,553 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 375 transitions. [2023-08-24 11:51:16,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 375 transitions. [2023-08-24 11:51:16,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:51:16,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 375 transitions. [2023-08-24 11:51:16,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 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 11:51:16,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 170.0) internal successors, (850), 5 states have internal predecessors, (850), 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 11:51:16,556 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 170.0) internal successors, (850), 5 states have internal predecessors, (850), 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 11:51:16,556 INFO L175 Difference]: Start difference. First operand has 39 places, 24 transitions, 91 flow. Second operand 4 states and 375 transitions. [2023-08-24 11:51:16,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 34 transitions, 178 flow [2023-08-24 11:51:16,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 34 transitions, 170 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 11:51:16,558 INFO L231 Difference]: Finished difference. Result has 42 places, 22 transitions, 90 flow [2023-08-24 11:51:16,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=42, PETRI_TRANSITIONS=22} [2023-08-24 11:51:16,559 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2023-08-24 11:51:16,559 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 22 transitions, 90 flow [2023-08-24 11:51:16,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.8) internal successors, (444), 5 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:51:16,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:51:16,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:51:16,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 11:51:16,560 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 11:51:16,560 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:51:16,560 INFO L85 PathProgramCache]: Analyzing trace with hash -623941008, now seen corresponding path program 1 times [2023-08-24 11:51:16,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:51:16,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925512778] [2023-08-24 11:51:16,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:51:16,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:51:16,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:51:16,686 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 11:51:16,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:51:16,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925512778] [2023-08-24 11:51:16,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925512778] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:51:16,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:51:16,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 11:51:16,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310776149] [2023-08-24 11:51:16,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:51:16,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 11:51:16,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:51:16,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 11:51:16,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 11:51:16,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 170 [2023-08-24 11:51:16,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 22 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 88.8) internal successors, (444), 5 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:51:16,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:51:16,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 170 [2023-08-24 11:51:16,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:51:16,736 INFO L124 PetriNetUnfolderBase]: 150/265 cut-off events. [2023-08-24 11:51:16,737 INFO L125 PetriNetUnfolderBase]: For 418/421 co-relation queries the response was YES. [2023-08-24 11:51:16,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 666 conditions, 265 events. 150/265 cut-off events. For 418/421 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 784 event pairs, 86 based on Foata normal form. 24/286 useless extension candidates. Maximal degree in co-relation 650. Up to 155 conditions per place. [2023-08-24 11:51:16,738 INFO L140 encePairwiseOnDemand]: 167/170 looper letters, 0 selfloop transitions, 0 changer transitions 25/25 dead transitions. [2023-08-24 11:51:16,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 25 transitions, 130 flow [2023-08-24 11:51:16,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 11:51:16,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 11:51:16,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 368 transitions. [2023-08-24 11:51:16,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5411764705882353 [2023-08-24 11:51:16,739 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 368 transitions. [2023-08-24 11:51:16,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 368 transitions. [2023-08-24 11:51:16,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:51:16,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 368 transitions. [2023-08-24 11:51:16,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 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 11:51:16,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 170.0) internal successors, (850), 5 states have internal predecessors, (850), 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 11:51:16,742 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 170.0) internal successors, (850), 5 states have internal predecessors, (850), 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 11:51:16,742 INFO L175 Difference]: Start difference. First operand has 42 places, 22 transitions, 90 flow. Second operand 4 states and 368 transitions. [2023-08-24 11:51:16,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 25 transitions, 130 flow [2023-08-24 11:51:16,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 25 transitions, 106 flow, removed 3 selfloop flow, removed 9 redundant places. [2023-08-24 11:51:16,743 INFO L231 Difference]: Finished difference. Result has 35 places, 0 transitions, 0 flow [2023-08-24 11:51:16,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=54, 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 11:51:16,744 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2023-08-24 11:51:16,744 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 0 transitions, 0 flow [2023-08-24 11:51:16,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.8) internal successors, (444), 5 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:51:16,746 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-08-24 11:51:16,746 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-08-24 11:51:16,747 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-08-24 11:51:16,747 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-24 11:51:16,747 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-24 11:51:16,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 11:51:16,747 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:51:16,750 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 11:51:16,750 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 11:51:16,752 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 11:51:16 BasicIcfg [2023-08-24 11:51:16,752 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 11:51:16,753 INFO L158 Benchmark]: Toolchain (without parser) took 6709.01ms. Allocated memory was 331.4MB in the beginning and 610.3MB in the end (delta: 278.9MB). Free memory was 306.3MB in the beginning and 442.1MB in the end (delta: -135.8MB). Peak memory consumption was 144.6MB. Max. memory is 16.0GB. [2023-08-24 11:51:16,753 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 331.4MB. Free memory was 309.3MB in the beginning and 309.2MB in the end (delta: 82.6kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 11:51:16,753 INFO L158 Benchmark]: CACSL2BoogieTranslator took 406.27ms. Allocated memory is still 331.4MB. Free memory was 306.3MB in the beginning and 285.3MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-24 11:51:16,754 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.09ms. Allocated memory is still 331.4MB. Free memory was 285.3MB in the beginning and 283.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 11:51:16,754 INFO L158 Benchmark]: Boogie Preprocessor took 22.15ms. Allocated memory is still 331.4MB. Free memory was 283.2MB in the beginning and 281.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 11:51:16,754 INFO L158 Benchmark]: RCFGBuilder took 450.57ms. Allocated memory is still 331.4MB. Free memory was 281.7MB in the beginning and 266.4MB in the end (delta: 15.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-24 11:51:16,754 INFO L158 Benchmark]: TraceAbstraction took 5775.92ms. Allocated memory was 331.4MB in the beginning and 610.3MB in the end (delta: 278.9MB). Free memory was 266.0MB in the beginning and 442.1MB in the end (delta: -176.2MB). Peak memory consumption was 104.8MB. Max. memory is 16.0GB. [2023-08-24 11:51:16,755 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 331.4MB. Free memory was 309.3MB in the beginning and 309.2MB in the end (delta: 82.6kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 406.27ms. Allocated memory is still 331.4MB. Free memory was 306.3MB in the beginning and 285.3MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 49.09ms. Allocated memory is still 331.4MB. Free memory was 285.3MB in the beginning and 283.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 22.15ms. Allocated memory is still 331.4MB. Free memory was 283.2MB in the beginning and 281.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 450.57ms. Allocated memory is still 331.4MB. Free memory was 281.7MB in the beginning and 266.4MB in the end (delta: 15.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 5775.92ms. Allocated memory was 331.4MB in the beginning and 610.3MB in the end (delta: 278.9MB). Free memory was 266.0MB in the beginning and 442.1MB in the end (delta: -176.2MB). Peak memory consumption was 104.8MB. 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: 2.5s, 98 PlacesBefore, 35 PlacesAfterwards, 86 TransitionsBefore, 22 TransitionsAfterwards, 1704 CoEnabledTransitionPairs, 6 FixpointIterations, 23 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 66 TotalNumberOfCompositions, 3354 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1679, independent: 1560, independent conditional: 0, independent unconditional: 1560, dependent: 119, dependent conditional: 0, dependent unconditional: 119, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 900, independent: 870, independent conditional: 0, independent unconditional: 870, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1679, independent: 690, independent conditional: 0, independent unconditional: 690, dependent: 89, dependent conditional: 0, dependent unconditional: 89, unknown: 900, unknown conditional: 0, unknown unconditional: 900] , Statistics on independence cache: Total cache size (in pairs): 75, Positive cache size: 63, Positive conditional cache size: 0, Positive unconditional cache size: 63, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, 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 9 procedures, 135 locations, 5 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: 5.6s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 171 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 171 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 333 IncrementalHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 4 mSDtfsCounter, 333 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred in iteration=5, InterpolantAutomatonStates: 31, 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, 1.4s InterpolantComputationTime, 119 NumberOfCodeBlocks, 119 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 110 ConstructedInterpolants, 0 QuantifiedInterpolants, 554 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 11:51:16,772 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...