/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/weaver_bench-exp2x6.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 01:48:38,965 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 01:48:39,040 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 01:48:39,047 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 01:48:39,048 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 01:48:39,048 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 01:48:39,048 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 01:48:39,083 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 01:48:39,084 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 01:48:39,088 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 01:48:39,088 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 01:48:39,088 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 01:48:39,089 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 01:48:39,090 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 01:48:39,091 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 01:48:39,091 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 01:48:39,091 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 01:48:39,091 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 01:48:39,092 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 01:48:39,092 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 01:48:39,092 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 01:48:39,092 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 01:48:39,093 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 01:48:39,093 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 01:48:39,094 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 01:48:39,094 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 01:48:39,094 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 01:48:39,095 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 01:48:39,095 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 01:48:39,095 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 01:48:39,096 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 01:48:39,096 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 01:48:39,097 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 01:48:39,097 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 01:48:39,097 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 01:48:39,097 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 01:48:39,097 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 01:48:39,097 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 01:48:39,097 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 01:48:39,098 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 01:48:39,098 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 01:48:39,098 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-04 01:48:39,339 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 01:48:39,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 01:48:39,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 01:48:39,367 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 01:48:39,368 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 01:48:39,369 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_bench-exp2x6.wvr_bound2.c [2023-08-04 01:48:40,544 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 01:48:40,750 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 01:48:40,750 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_bench-exp2x6.wvr_bound2.c [2023-08-04 01:48:40,759 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e60c198c4/0ba0bc115dd54663be273e3288fb49d0/FLAGec3757acc [2023-08-04 01:48:40,776 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e60c198c4/0ba0bc115dd54663be273e3288fb49d0 [2023-08-04 01:48:40,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 01:48:40,783 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 01:48:40,784 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 01:48:40,784 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 01:48:40,787 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 01:48:40,788 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 01:48:40" (1/1) ... [2023-08-04 01:48:40,789 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24ba37b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:48:40, skipping insertion in model container [2023-08-04 01:48:40,789 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 01:48:40" (1/1) ... [2023-08-04 01:48:40,819 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 01:48:40,957 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_bench-exp2x6.wvr_bound2.c[2777,2790] [2023-08-04 01:48:40,958 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 01:48:40,966 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 01:48:40,988 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_bench-exp2x6.wvr_bound2.c[2777,2790] [2023-08-04 01:48:40,990 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 01:48:41,002 INFO L206 MainTranslator]: Completed translation [2023-08-04 01:48:41,003 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:48:41 WrapperNode [2023-08-04 01:48:41,003 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 01:48:41,007 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 01:48:41,007 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 01:48:41,008 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 01:48:41,014 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:48:41" (1/1) ... [2023-08-04 01:48:41,021 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:48:41" (1/1) ... [2023-08-04 01:48:41,042 INFO L138 Inliner]: procedures = 20, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 160 [2023-08-04 01:48:41,042 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 01:48:41,043 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 01:48:41,043 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 01:48:41,043 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 01:48:41,051 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:48:41" (1/1) ... [2023-08-04 01:48:41,051 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:48:41" (1/1) ... [2023-08-04 01:48:41,061 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:48:41" (1/1) ... [2023-08-04 01:48:41,062 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:48:41" (1/1) ... [2023-08-04 01:48:41,069 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:48:41" (1/1) ... [2023-08-04 01:48:41,078 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:48:41" (1/1) ... [2023-08-04 01:48:41,079 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:48:41" (1/1) ... [2023-08-04 01:48:41,081 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:48:41" (1/1) ... [2023-08-04 01:48:41,083 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 01:48:41,084 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 01:48:41,084 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 01:48:41,084 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 01:48:41,085 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:48:41" (1/1) ... [2023-08-04 01:48:41,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 01:48:41,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:48:41,117 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-04 01:48:41,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-04 01:48:41,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 01:48:41,163 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-04 01:48:41,163 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-04 01:48:41,163 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-04 01:48:41,163 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-04 01:48:41,164 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-04 01:48:41,164 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-04 01:48:41,164 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-04 01:48:41,164 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-04 01:48:41,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 01:48:41,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 01:48:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 01:48:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 01:48:41,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 01:48:41,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 01:48:41,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 01:48:41,168 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 01:48:41,289 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 01:48:41,293 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 01:48:41,634 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 01:48:41,643 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 01:48:41,643 INFO L302 CfgBuilder]: Removed 12 assume(true) statements. [2023-08-04 01:48:41,645 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 01:48:41 BoogieIcfgContainer [2023-08-04 01:48:41,646 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 01:48:41,647 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 01:48:41,648 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 01:48:41,650 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 01:48:41,653 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 01:48:40" (1/3) ... [2023-08-04 01:48:41,655 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16cf6d6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 01:48:41, skipping insertion in model container [2023-08-04 01:48:41,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:48:41" (2/3) ... [2023-08-04 01:48:41,656 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16cf6d6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 01:48:41, skipping insertion in model container [2023-08-04 01:48:41,657 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 01:48:41" (3/3) ... [2023-08-04 01:48:41,659 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_bench-exp2x6.wvr_bound2.c [2023-08-04 01:48:41,667 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 01:48:41,675 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 01:48:41,676 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 01:48:41,676 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 01:48:41,762 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-08-04 01:48:41,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 203 transitions, 474 flow [2023-08-04 01:48:42,082 INFO L124 PetriNetUnfolderBase]: 269/1482 cut-off events. [2023-08-04 01:48:42,082 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2023-08-04 01:48:42,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1660 conditions, 1482 events. 269/1482 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 9984 event pairs, 0 based on Foata normal form. 0/1231 useless extension candidates. Maximal degree in co-relation 819. Up to 33 conditions per place. [2023-08-04 01:48:42,099 INFO L82 GeneralOperation]: Start removeDead. Operand has 178 places, 203 transitions, 474 flow [2023-08-04 01:48:42,116 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 178 places, 203 transitions, 474 flow [2023-08-04 01:48:42,119 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 01:48:42,134 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 178 places, 203 transitions, 474 flow [2023-08-04 01:48:42,140 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 178 places, 203 transitions, 474 flow [2023-08-04 01:48:42,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 203 transitions, 474 flow [2023-08-04 01:48:42,320 INFO L124 PetriNetUnfolderBase]: 269/1482 cut-off events. [2023-08-04 01:48:42,320 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2023-08-04 01:48:42,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1660 conditions, 1482 events. 269/1482 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 9984 event pairs, 0 based on Foata normal form. 0/1231 useless extension candidates. Maximal degree in co-relation 819. Up to 33 conditions per place. [2023-08-04 01:48:42,347 INFO L119 LiptonReduction]: Number of co-enabled transitions 8244 [2023-08-04 01:48:46,231 INFO L134 LiptonReduction]: Checked pairs total: 31121 [2023-08-04 01:48:46,231 INFO L136 LiptonReduction]: Total number of compositions: 148 [2023-08-04 01:48:46,244 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 01:48:46,250 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@373bcad4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 01:48:46,250 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 01:48:46,256 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 01:48:46,256 INFO L124 PetriNetUnfolderBase]: 1/34 cut-off events. [2023-08-04 01:48:46,256 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 01:48:46,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:48:46,257 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 01:48:46,257 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:48:46,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:48:46,261 INFO L85 PathProgramCache]: Analyzing trace with hash -67809295, now seen corresponding path program 1 times [2023-08-04 01:48:46,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:48:46,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768272812] [2023-08-04 01:48:46,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:48:46,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:48:46,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 01:48:46,420 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 01:48:46,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 01:48:46,496 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 01:48:46,499 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 01:48:46,500 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 01:48:46,502 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 01:48:46,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 01:48:46,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 01:48:46,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 01:48:46,504 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 01:48:46,511 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (1/2) [2023-08-04 01:48:46,512 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 01:48:46,512 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 01:48:46,557 INFO L144 ThreadInstanceAdder]: Constructed 32 joinOtherThreadTransitions. [2023-08-04 01:48:46,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 259 transitions, 662 flow [2023-08-04 01:48:49,382 INFO L124 PetriNetUnfolderBase]: 5482/20280 cut-off events. [2023-08-04 01:48:49,382 INFO L125 PetriNetUnfolderBase]: For 4176/4176 co-relation queries the response was YES. [2023-08-04 01:48:49,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24665 conditions, 20280 events. 5482/20280 cut-off events. For 4176/4176 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 213569 event pairs, 178 based on Foata normal form. 0/17319 useless extension candidates. Maximal degree in co-relation 12225. Up to 1024 conditions per place. [2023-08-04 01:48:49,580 INFO L82 GeneralOperation]: Start removeDead. Operand has 218 places, 259 transitions, 662 flow [2023-08-04 01:48:49,684 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 218 places, 259 transitions, 662 flow [2023-08-04 01:48:49,685 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 01:48:49,685 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 218 places, 259 transitions, 662 flow [2023-08-04 01:48:49,685 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 218 places, 259 transitions, 662 flow [2023-08-04 01:48:49,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 259 transitions, 662 flow [2023-08-04 01:48:51,846 INFO L124 PetriNetUnfolderBase]: 5482/20280 cut-off events. [2023-08-04 01:48:51,846 INFO L125 PetriNetUnfolderBase]: For 4176/4176 co-relation queries the response was YES. [2023-08-04 01:48:51,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24665 conditions, 20280 events. 5482/20280 cut-off events. For 4176/4176 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 213569 event pairs, 178 based on Foata normal form. 0/17319 useless extension candidates. Maximal degree in co-relation 12225. Up to 1024 conditions per place. [2023-08-04 01:48:52,335 INFO L119 LiptonReduction]: Number of co-enabled transitions 21672 [2023-08-04 01:48:56,094 INFO L134 LiptonReduction]: Checked pairs total: 137084 [2023-08-04 01:48:56,094 INFO L136 LiptonReduction]: Total number of compositions: 156 [2023-08-04 01:48:56,096 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 01:48:56,097 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@373bcad4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 01:48:56,097 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 01:48:56,108 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 01:48:56,108 INFO L124 PetriNetUnfolderBase]: 10/159 cut-off events. [2023-08-04 01:48:56,108 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-04 01:48:56,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:48:56,109 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-04 01:48:56,109 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:48:56,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:48:56,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1269669138, now seen corresponding path program 1 times [2023-08-04 01:48:56,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:48:56,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144887383] [2023-08-04 01:48:56,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:48:56,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:48:56,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:48:56,314 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 01:48:56,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:48:56,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144887383] [2023-08-04 01:48:56,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144887383] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:48:56,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623512241] [2023-08-04 01:48:56,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:48:56,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:48:56,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:48:56,321 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 01:48:56,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 01:48:56,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:48:56,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 01:48:56,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:48:56,462 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 01:48:56,462 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:48:56,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623512241] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:48:56,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:48:56,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-04 01:48:56,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556463611] [2023-08-04 01:48:56,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:48:56,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:48:56,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:48:56,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:48:56,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 01:48:56,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 415 [2023-08-04 01:48:56,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 126 transitions, 396 flow. Second operand has 5 states, 5 states have (on average 196.6) internal successors, (983), 5 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:48:56,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:48:56,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 415 [2023-08-04 01:48:56,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:49:31,986 INFO L124 PetriNetUnfolderBase]: 310987/433149 cut-off events. [2023-08-04 01:49:31,986 INFO L125 PetriNetUnfolderBase]: For 99332/99332 co-relation queries the response was YES. [2023-08-04 01:49:35,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 909984 conditions, 433149 events. 310987/433149 cut-off events. For 99332/99332 co-relation queries the response was YES. Maximal size of possible extension queue 6315. Compared 3170508 event pairs, 184474 based on Foata normal form. 0/403898 useless extension candidates. Maximal degree in co-relation 373330. Up to 402421 conditions per place. [2023-08-04 01:49:37,619 INFO L140 encePairwiseOnDemand]: 410/415 looper letters, 75 selfloop transitions, 5 changer transitions 0/131 dead transitions. [2023-08-04 01:49:37,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 131 transitions, 562 flow [2023-08-04 01:49:37,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 01:49:37,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 01:49:37,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1057 transitions. [2023-08-04 01:49:37,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5093975903614458 [2023-08-04 01:49:37,638 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1057 transitions. [2023-08-04 01:49:37,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1057 transitions. [2023-08-04 01:49:37,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:49:37,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1057 transitions. [2023-08-04 01:49:37,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 211.4) internal successors, (1057), 5 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:49:37,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:49:37,669 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:49:37,670 INFO L175 Difference]: Start difference. First operand has 103 places, 126 transitions, 396 flow. Second operand 5 states and 1057 transitions. [2023-08-04 01:49:37,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 131 transitions, 562 flow [2023-08-04 01:49:37,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 131 transitions, 552 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 01:49:37,844 INFO L231 Difference]: Finished difference. Result has 104 places, 127 transitions, 401 flow [2023-08-04 01:49:37,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=401, PETRI_PLACES=104, PETRI_TRANSITIONS=127} [2023-08-04 01:49:37,849 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 1 predicate places. [2023-08-04 01:49:37,850 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 127 transitions, 401 flow [2023-08-04 01:49:37,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 196.6) internal successors, (983), 5 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:49:37,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:49:37,851 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2023-08-04 01:49:37,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 01:49:38,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:49:38,060 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:49:38,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:49:38,061 INFO L85 PathProgramCache]: Analyzing trace with hash 121687196, now seen corresponding path program 1 times [2023-08-04 01:49:38,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:49:38,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561982518] [2023-08-04 01:49:38,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:49:38,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:49:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:49:38,116 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 01:49:38,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:49:38,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561982518] [2023-08-04 01:49:38,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561982518] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:49:38,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 01:49:38,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 01:49:38,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243326376] [2023-08-04 01:49:38,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:49:38,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:49:38,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:49:38,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:49:38,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 01:49:38,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 415 [2023-08-04 01:49:38,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 127 transitions, 401 flow. Second operand has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:49:38,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:49:38,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 415 [2023-08-04 01:49:38,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:50:13,339 INFO L124 PetriNetUnfolderBase]: 308344/426786 cut-off events. [2023-08-04 01:50:13,340 INFO L125 PetriNetUnfolderBase]: For 94304/94304 co-relation queries the response was YES. [2023-08-04 01:50:17,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 890593 conditions, 426786 events. 308344/426786 cut-off events. For 94304/94304 co-relation queries the response was YES. Maximal size of possible extension queue 6524. Compared 3086264 event pairs, 212877 based on Foata normal form. 1/397410 useless extension candidates. Maximal degree in co-relation 275656. Up to 398767 conditions per place. [2023-08-04 01:50:20,787 INFO L140 encePairwiseOnDemand]: 412/415 looper letters, 75 selfloop transitions, 2 changer transitions 0/128 dead transitions. [2023-08-04 01:50:20,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 128 transitions, 556 flow [2023-08-04 01:50:20,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:50:20,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:50:20,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 665 transitions. [2023-08-04 01:50:20,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5341365461847389 [2023-08-04 01:50:20,794 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 665 transitions. [2023-08-04 01:50:20,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 665 transitions. [2023-08-04 01:50:20,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:50:20,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 665 transitions. [2023-08-04 01:50:20,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.66666666666666) internal successors, (665), 3 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:50:20,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 415.0) internal successors, (1660), 4 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:50:20,803 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 415.0) internal successors, (1660), 4 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:50:20,803 INFO L175 Difference]: Start difference. First operand has 104 places, 127 transitions, 401 flow. Second operand 3 states and 665 transitions. [2023-08-04 01:50:20,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 128 transitions, 556 flow [2023-08-04 01:50:20,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 128 transitions, 555 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 01:50:20,865 INFO L231 Difference]: Finished difference. Result has 105 places, 126 transitions, 399 flow [2023-08-04 01:50:20,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=399, PETRI_PLACES=105, PETRI_TRANSITIONS=126} [2023-08-04 01:50:20,866 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 2 predicate places. [2023-08-04 01:50:20,866 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 126 transitions, 399 flow [2023-08-04 01:50:20,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:50:20,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:50:20,867 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:50:20,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 01:50:20,867 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:50:20,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:50:20,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1921780764, now seen corresponding path program 1 times [2023-08-04 01:50:20,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:50:20,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488050206] [2023-08-04 01:50:20,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:50:20,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:50:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:50:20,928 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 01:50:20,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:50:20,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488050206] [2023-08-04 01:50:20,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488050206] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:50:20,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429634451] [2023-08-04 01:50:20,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:50:20,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:50:20,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:50:20,939 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 01:50:20,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 01:50:21,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:50:21,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 01:50:21,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:50:21,045 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 01:50:21,045 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 01:50:21,067 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 01:50:21,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429634451] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 01:50:21,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 01:50:21,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 01:50:21,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443484771] [2023-08-04 01:50:21,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 01:50:21,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:50:21,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:50:21,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:50:21,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:50:21,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 415 [2023-08-04 01:50:21,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 126 transitions, 399 flow. Second operand has 5 states, 5 states have (on average 197.6) internal successors, (988), 5 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:50:21,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:50:21,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 415 [2023-08-04 01:50:21,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:50:53,029 INFO L124 PetriNetUnfolderBase]: 301918/415472 cut-off events. [2023-08-04 01:50:53,031 INFO L125 PetriNetUnfolderBase]: For 93138/93138 co-relation queries the response was YES. [2023-08-04 01:50:57,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 869550 conditions, 415472 events. 301918/415472 cut-off events. For 93138/93138 co-relation queries the response was YES. Maximal size of possible extension queue 6243. Compared 2956447 event pairs, 179809 based on Foata normal form. 2/386583 useless extension candidates. Maximal degree in co-relation 542833. Up to 390281 conditions per place. [2023-08-04 01:51:00,572 INFO L140 encePairwiseOnDemand]: 412/415 looper letters, 75 selfloop transitions, 3 changer transitions 0/129 dead transitions. [2023-08-04 01:51:00,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 129 transitions, 560 flow [2023-08-04 01:51:00,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 01:51:00,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 01:51:00,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 859 transitions. [2023-08-04 01:51:00,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5174698795180723 [2023-08-04 01:51:00,590 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 859 transitions. [2023-08-04 01:51:00,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 859 transitions. [2023-08-04 01:51:00,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:51:00,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 859 transitions. [2023-08-04 01:51:00,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 214.75) internal successors, (859), 4 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:51:00,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 415.0) internal successors, (2075), 5 states have internal predecessors, (2075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:51:00,597 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 415.0) internal successors, (2075), 5 states have internal predecessors, (2075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:51:00,597 INFO L175 Difference]: Start difference. First operand has 105 places, 126 transitions, 399 flow. Second operand 4 states and 859 transitions. [2023-08-04 01:51:00,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 129 transitions, 560 flow [2023-08-04 01:51:00,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 129 transitions, 556 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 01:51:00,854 INFO L231 Difference]: Finished difference. Result has 106 places, 125 transitions, 396 flow [2023-08-04 01:51:00,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=396, PETRI_PLACES=106, PETRI_TRANSITIONS=125} [2023-08-04 01:51:00,855 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 3 predicate places. [2023-08-04 01:51:00,855 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 125 transitions, 396 flow [2023-08-04 01:51:00,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 197.6) internal successors, (988), 5 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:51:00,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:51:00,856 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:51:00,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 01:51:01,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-04 01:51:01,061 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:51:01,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:51:01,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1593223877, now seen corresponding path program 1 times [2023-08-04 01:51:01,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:51:01,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060996165] [2023-08-04 01:51:01,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:51:01,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:51:01,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:51:01,224 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 01:51:01,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:51:01,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060996165] [2023-08-04 01:51:01,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060996165] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:51:01,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990911800] [2023-08-04 01:51:01,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:51:01,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:51:01,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:51:01,238 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 01:51:01,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 01:51:01,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:51:01,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 01:51:01,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:51:01,367 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 01:51:01,367 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:51:01,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990911800] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:51:01,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:51:01,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-04 01:51:01,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093626983] [2023-08-04 01:51:01,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:51:01,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:51:01,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:51:01,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:51:01,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 01:51:01,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 415 [2023-08-04 01:51:01,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 125 transitions, 396 flow. Second operand has 5 states, 5 states have (on average 197.6) internal successors, (988), 5 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:51:01,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:51:01,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 415 [2023-08-04 01:51:01,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:51:34,778 INFO L124 PetriNetUnfolderBase]: 301910/415740 cut-off events. [2023-08-04 01:51:34,783 INFO L125 PetriNetUnfolderBase]: For 91762/91762 co-relation queries the response was YES. [2023-08-04 01:51:38,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 869758 conditions, 415740 events. 301910/415740 cut-off events. For 91762/91762 co-relation queries the response was YES. Maximal size of possible extension queue 6235. Compared 2967442 event pairs, 120731 based on Foata normal form. 0/386931 useless extension candidates. Maximal degree in co-relation 542981. Up to 390112 conditions per place. [2023-08-04 01:51:40,428 INFO L140 encePairwiseOnDemand]: 411/415 looper letters, 82 selfloop transitions, 5 changer transitions 0/137 dead transitions. [2023-08-04 01:51:40,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 137 transitions, 590 flow [2023-08-04 01:51:40,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 01:51:40,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 01:51:40,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1062 transitions. [2023-08-04 01:51:40,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5118072289156627 [2023-08-04 01:51:40,431 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1062 transitions. [2023-08-04 01:51:40,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1062 transitions. [2023-08-04 01:51:40,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:51:40,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1062 transitions. [2023-08-04 01:51:40,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 212.4) internal successors, (1062), 5 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:51:40,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:51:40,439 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:51:40,439 INFO L175 Difference]: Start difference. First operand has 106 places, 125 transitions, 396 flow. Second operand 5 states and 1062 transitions. [2023-08-04 01:51:40,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 137 transitions, 590 flow [2023-08-04 01:51:40,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 137 transitions, 574 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-04 01:51:40,519 INFO L231 Difference]: Finished difference. Result has 105 places, 127 transitions, 397 flow [2023-08-04 01:51:40,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=397, PETRI_PLACES=105, PETRI_TRANSITIONS=127} [2023-08-04 01:51:40,520 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 2 predicate places. [2023-08-04 01:51:40,520 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 127 transitions, 397 flow [2023-08-04 01:51:40,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 197.6) internal successors, (988), 5 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:51:40,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:51:40,521 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:51:40,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 01:51:40,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:51:40,727 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:51:40,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:51:40,727 INFO L85 PathProgramCache]: Analyzing trace with hash -222883984, now seen corresponding path program 1 times [2023-08-04 01:51:40,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:51:40,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783860035] [2023-08-04 01:51:40,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:51:40,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:51:40,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:51:40,779 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-04 01:51:40,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:51:40,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783860035] [2023-08-04 01:51:40,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783860035] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:51:40,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 01:51:40,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 01:51:40,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898424701] [2023-08-04 01:51:40,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:51:40,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:51:40,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:51:40,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:51:40,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 01:51:40,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 415 [2023-08-04 01:51:40,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 127 transitions, 397 flow. Second operand has 3 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:51:40,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:51:40,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 415 [2023-08-04 01:51:40,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:52:14,656 INFO L124 PetriNetUnfolderBase]: 300222/411132 cut-off events. [2023-08-04 01:52:14,659 INFO L125 PetriNetUnfolderBase]: For 87254/87254 co-relation queries the response was YES. [2023-08-04 01:52:17,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 853839 conditions, 411132 events. 300222/411132 cut-off events. For 87254/87254 co-relation queries the response was YES. Maximal size of possible extension queue 6683. Compared 2893871 event pairs, 209413 based on Foata normal form. 4/382055 useless extension candidates. Maximal degree in co-relation 331409. Up to 387957 conditions per place. [2023-08-04 01:52:19,652 INFO L140 encePairwiseOnDemand]: 412/415 looper letters, 78 selfloop transitions, 2 changer transitions 0/130 dead transitions. [2023-08-04 01:52:19,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 130 transitions, 562 flow [2023-08-04 01:52:19,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:52:19,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:52:19,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 667 transitions. [2023-08-04 01:52:19,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357429718875502 [2023-08-04 01:52:19,654 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 667 transitions. [2023-08-04 01:52:19,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 667 transitions. [2023-08-04 01:52:19,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:52:19,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 667 transitions. [2023-08-04 01:52:19,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:52:19,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 415.0) internal successors, (1660), 4 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:52:19,659 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 415.0) internal successors, (1660), 4 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:52:19,659 INFO L175 Difference]: Start difference. First operand has 105 places, 127 transitions, 397 flow. Second operand 3 states and 667 transitions. [2023-08-04 01:52:19,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 130 transitions, 562 flow [2023-08-04 01:52:19,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 130 transitions, 561 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 01:52:19,807 INFO L231 Difference]: Finished difference. Result has 106 places, 126 transitions, 395 flow [2023-08-04 01:52:19,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=395, PETRI_PLACES=106, PETRI_TRANSITIONS=126} [2023-08-04 01:52:19,808 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 3 predicate places. [2023-08-04 01:52:19,808 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 126 transitions, 395 flow [2023-08-04 01:52:19,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:52:19,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:52:19,808 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:52:19,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 01:52:19,809 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:52:19,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:52:19,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1126958957, now seen corresponding path program 1 times [2023-08-04 01:52:19,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:52:19,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023712158] [2023-08-04 01:52:19,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:52:19,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:52:19,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:52:19,872 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-04 01:52:19,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:52:19,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023712158] [2023-08-04 01:52:19,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023712158] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:52:19,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416789634] [2023-08-04 01:52:19,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:52:19,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:52:19,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:52:19,874 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 01:52:19,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-04 01:52:19,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:52:19,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 01:52:19,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:52:19,978 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-04 01:52:19,978 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 01:52:19,996 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-04 01:52:19,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416789634] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 01:52:19,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 01:52:19,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 01:52:19,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866701575] [2023-08-04 01:52:19,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 01:52:19,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:52:19,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:52:19,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:52:19,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:52:20,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 415 [2023-08-04 01:52:20,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 126 transitions, 395 flow. Second operand has 5 states, 5 states have (on average 198.6) internal successors, (993), 5 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:52:20,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:52:20,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 415 [2023-08-04 01:52:20,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:52:51,639 INFO L124 PetriNetUnfolderBase]: 296206/404372 cut-off events. [2023-08-04 01:52:51,639 INFO L125 PetriNetUnfolderBase]: For 86534/86534 co-relation queries the response was YES. [2023-08-04 01:52:54,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 841219 conditions, 404372 events. 296206/404372 cut-off events. For 86534/86534 co-relation queries the response was YES. Maximal size of possible extension queue 6514. Compared 2819581 event pairs, 179121 based on Foata normal form. 8/375595 useless extension candidates. Maximal degree in co-relation 328893. Up to 382717 conditions per place. [2023-08-04 01:52:56,967 INFO L140 encePairwiseOnDemand]: 412/415 looper letters, 80 selfloop transitions, 3 changer transitions 0/133 dead transitions. [2023-08-04 01:52:56,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 133 transitions, 574 flow [2023-08-04 01:52:56,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 01:52:56,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 01:52:56,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 863 transitions. [2023-08-04 01:52:56,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5198795180722892 [2023-08-04 01:52:56,970 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 863 transitions. [2023-08-04 01:52:56,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 863 transitions. [2023-08-04 01:52:56,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:52:56,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 863 transitions. [2023-08-04 01:52:56,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 215.75) internal successors, (863), 4 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:52:56,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 415.0) internal successors, (2075), 5 states have internal predecessors, (2075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:52:56,975 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 415.0) internal successors, (2075), 5 states have internal predecessors, (2075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:52:56,975 INFO L175 Difference]: Start difference. First operand has 106 places, 126 transitions, 395 flow. Second operand 4 states and 863 transitions. [2023-08-04 01:52:56,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 133 transitions, 574 flow [2023-08-04 01:52:57,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 133 transitions, 570 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 01:52:57,201 INFO L231 Difference]: Finished difference. Result has 107 places, 125 transitions, 392 flow [2023-08-04 01:52:57,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=392, PETRI_PLACES=107, PETRI_TRANSITIONS=125} [2023-08-04 01:52:57,202 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 4 predicate places. [2023-08-04 01:52:57,203 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 125 transitions, 392 flow [2023-08-04 01:52:57,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 198.6) internal successors, (993), 5 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:52:57,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:52:57,203 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:52:57,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-04 01:52:57,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:52:57,409 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:52:57,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:52:57,409 INFO L85 PathProgramCache]: Analyzing trace with hash -803249707, now seen corresponding path program 1 times [2023-08-04 01:52:57,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:52:57,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740126726] [2023-08-04 01:52:57,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:52:57,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:52:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:52:57,501 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 01:52:57,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:52:57,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740126726] [2023-08-04 01:52:57,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740126726] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:52:57,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954856699] [2023-08-04 01:52:57,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:52:57,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:52:57,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:52:57,504 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 01:52:57,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-04 01:52:57,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:52:57,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 01:52:57,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:52:57,620 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 01:52:57,620 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:52:57,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954856699] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:52:57,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:52:57,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-04 01:52:57,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872223456] [2023-08-04 01:52:57,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:52:57,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:52:57,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:52:57,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:52:57,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 01:52:57,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 415 [2023-08-04 01:52:57,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 125 transitions, 392 flow. Second operand has 5 states, 5 states have (on average 198.6) internal successors, (993), 5 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:52:57,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:52:57,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 415 [2023-08-04 01:52:57,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:53:27,635 INFO L124 PetriNetUnfolderBase]: 296126/406770 cut-off events. [2023-08-04 01:53:27,637 INFO L125 PetriNetUnfolderBase]: For 74430/74430 co-relation queries the response was YES. [2023-08-04 01:53:30,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 843441 conditions, 406770 events. 296126/406770 cut-off events. For 74430/74430 co-relation queries the response was YES. Maximal size of possible extension queue 6502. Compared 2897785 event pairs, 63173 based on Foata normal form. 0/378667 useless extension candidates. Maximal degree in co-relation 329953. Up to 381748 conditions per place. [2023-08-04 01:53:32,695 INFO L140 encePairwiseOnDemand]: 411/415 looper letters, 89 selfloop transitions, 5 changer transitions 0/143 dead transitions. [2023-08-04 01:53:32,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 143 transitions, 612 flow [2023-08-04 01:53:32,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 01:53:32,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 01:53:32,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1068 transitions. [2023-08-04 01:53:32,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5146987951807229 [2023-08-04 01:53:32,698 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1068 transitions. [2023-08-04 01:53:32,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1068 transitions. [2023-08-04 01:53:32,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:53:32,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1068 transitions. [2023-08-04 01:53:32,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 213.6) internal successors, (1068), 5 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:53:32,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:53:32,703 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:53:32,704 INFO L175 Difference]: Start difference. First operand has 107 places, 125 transitions, 392 flow. Second operand 5 states and 1068 transitions. [2023-08-04 01:53:32,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 143 transitions, 612 flow [2023-08-04 01:53:32,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 143 transitions, 596 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-04 01:53:32,761 INFO L231 Difference]: Finished difference. Result has 106 places, 127 transitions, 393 flow [2023-08-04 01:53:32,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=393, PETRI_PLACES=106, PETRI_TRANSITIONS=127} [2023-08-04 01:53:32,761 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 3 predicate places. [2023-08-04 01:53:32,762 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 127 transitions, 393 flow [2023-08-04 01:53:32,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 198.6) internal successors, (993), 5 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:53:32,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:53:32,762 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:53:32,766 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-04 01:53:32,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:53:32,963 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:53:32,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:53:32,964 INFO L85 PathProgramCache]: Analyzing trace with hash -984192479, now seen corresponding path program 1 times [2023-08-04 01:53:32,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:53:32,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135299849] [2023-08-04 01:53:32,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:53:32,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:53:32,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:53:33,002 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-04 01:53:33,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:53:33,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135299849] [2023-08-04 01:53:33,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135299849] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:53:33,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 01:53:33,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 01:53:33,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249657443] [2023-08-04 01:53:33,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:53:33,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:53:33,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:53:33,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:53:33,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 01:53:33,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 415 [2023-08-04 01:53:33,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 127 transitions, 393 flow. Second operand has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:53:33,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:53:33,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 415 [2023-08-04 01:53:33,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:54:04,409 INFO L124 PetriNetUnfolderBase]: 295134/403762 cut-off events. [2023-08-04 01:54:04,409 INFO L125 PetriNetUnfolderBase]: For 68838/68838 co-relation queries the response was YES. [2023-08-04 01:54:07,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 830425 conditions, 403762 events. 295134/403762 cut-off events. For 68838/68838 co-relation queries the response was YES. Maximal size of possible extension queue 6884. Compared 2838521 event pairs, 208089 based on Foata normal form. 16/375495 useless extension candidates. Maximal degree in co-relation 324907. Up to 381117 conditions per place. [2023-08-04 01:54:09,521 INFO L140 encePairwiseOnDemand]: 412/415 looper letters, 81 selfloop transitions, 2 changer transitions 0/132 dead transitions. [2023-08-04 01:54:09,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 132 transitions, 568 flow [2023-08-04 01:54:09,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:54:09,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:54:09,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 669 transitions. [2023-08-04 01:54:09,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5373493975903615 [2023-08-04 01:54:09,524 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 669 transitions. [2023-08-04 01:54:09,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 669 transitions. [2023-08-04 01:54:09,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:54:09,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 669 transitions. [2023-08-04 01:54:09,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:54:09,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 415.0) internal successors, (1660), 4 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:54:09,528 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 415.0) internal successors, (1660), 4 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:54:09,528 INFO L175 Difference]: Start difference. First operand has 106 places, 127 transitions, 393 flow. Second operand 3 states and 669 transitions. [2023-08-04 01:54:09,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 132 transitions, 568 flow [2023-08-04 01:54:09,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 132 transitions, 567 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 01:54:09,628 INFO L231 Difference]: Finished difference. Result has 107 places, 126 transitions, 391 flow [2023-08-04 01:54:09,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=391, PETRI_PLACES=107, PETRI_TRANSITIONS=126} [2023-08-04 01:54:09,628 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 4 predicate places. [2023-08-04 01:54:09,629 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 126 transitions, 391 flow [2023-08-04 01:54:09,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:54:09,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:54:09,629 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:54:09,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-04 01:54:09,629 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:54:09,630 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:54:09,630 INFO L85 PathProgramCache]: Analyzing trace with hash 649260619, now seen corresponding path program 1 times [2023-08-04 01:54:09,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:54:09,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972349355] [2023-08-04 01:54:09,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:54:09,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:54:09,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:54:09,685 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-04 01:54:09,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:54:09,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972349355] [2023-08-04 01:54:09,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972349355] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:54:09,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145235595] [2023-08-04 01:54:09,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:54:09,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:54:09,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:54:09,689 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 01:54:09,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-04 01:54:09,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:54:09,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 01:54:09,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:54:09,796 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-04 01:54:09,797 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 01:54:09,816 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-04 01:54:09,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145235595] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 01:54:09,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 01:54:09,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 01:54:09,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380012125] [2023-08-04 01:54:09,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 01:54:09,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:54:09,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:54:09,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:54:09,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:54:09,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 415 [2023-08-04 01:54:09,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 126 transitions, 391 flow. Second operand has 5 states, 5 states have (on average 199.6) internal successors, (998), 5 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:54:09,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:54:09,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 415 [2023-08-04 01:54:09,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:54:40,867 INFO L124 PetriNetUnfolderBase]: 292830/400018 cut-off events. [2023-08-04 01:54:40,867 INFO L125 PetriNetUnfolderBase]: For 68422/68422 co-relation queries the response was YES. [2023-08-04 01:54:44,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 823465 conditions, 400018 events. 292830/400018 cut-off events. For 68422/68422 co-relation queries the response was YES. Maximal size of possible extension queue 6618. Compared 2793645 event pairs, 179541 based on Foata normal form. 32/371959 useless extension candidates. Maximal degree in co-relation 323487. Up to 377821 conditions per place. [2023-08-04 01:54:47,261 INFO L140 encePairwiseOnDemand]: 412/415 looper letters, 85 selfloop transitions, 3 changer transitions 0/137 dead transitions. [2023-08-04 01:54:47,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 137 transitions, 588 flow [2023-08-04 01:54:47,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 01:54:47,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 01:54:47,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 867 transitions. [2023-08-04 01:54:47,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.522289156626506 [2023-08-04 01:54:47,278 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 867 transitions. [2023-08-04 01:54:47,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 867 transitions. [2023-08-04 01:54:47,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:54:47,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 867 transitions. [2023-08-04 01:54:47,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 216.75) internal successors, (867), 4 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:54:47,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 415.0) internal successors, (2075), 5 states have internal predecessors, (2075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:54:47,283 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 415.0) internal successors, (2075), 5 states have internal predecessors, (2075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:54:47,283 INFO L175 Difference]: Start difference. First operand has 107 places, 126 transitions, 391 flow. Second operand 4 states and 867 transitions. [2023-08-04 01:54:47,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 137 transitions, 588 flow [2023-08-04 01:54:47,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 137 transitions, 584 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 01:54:47,425 INFO L231 Difference]: Finished difference. Result has 108 places, 125 transitions, 388 flow [2023-08-04 01:54:47,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=388, PETRI_PLACES=108, PETRI_TRANSITIONS=125} [2023-08-04 01:54:47,427 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 5 predicate places. [2023-08-04 01:54:47,427 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 125 transitions, 388 flow [2023-08-04 01:54:47,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 199.6) internal successors, (998), 5 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:54:47,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:54:47,427 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:54:47,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-04 01:54:47,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:54:47,633 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:54:47,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:54:47,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1571088620, now seen corresponding path program 1 times [2023-08-04 01:54:47,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:54:47,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332483642] [2023-08-04 01:54:47,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:54:47,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:54:47,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:54:47,916 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-04 01:54:47,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:54:47,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332483642] [2023-08-04 01:54:47,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332483642] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:54:47,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357548743] [2023-08-04 01:54:47,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:54:47,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:54:47,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:54:47,941 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 01:54:48,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-04 01:54:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:54:48,112 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 01:54:48,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:54:48,133 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-04 01:54:48,134 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:54:48,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357548743] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:54:48,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:54:48,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-04 01:54:48,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157090964] [2023-08-04 01:54:48,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:54:48,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:54:48,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:54:48,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:54:48,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 01:54:48,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 415 [2023-08-04 01:54:48,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 125 transitions, 388 flow. Second operand has 5 states, 5 states have (on average 199.6) internal successors, (998), 5 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:54:48,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:54:48,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 415 [2023-08-04 01:54:48,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:55:17,950 INFO L124 PetriNetUnfolderBase]: 291806/403930 cut-off events. [2023-08-04 01:55:17,950 INFO L125 PetriNetUnfolderBase]: For 44518/44518 co-relation queries the response was YES. [2023-08-04 01:55:21,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 825905 conditions, 403930 events. 291806/403930 cut-off events. For 44518/44518 co-relation queries the response was YES. Maximal size of possible extension queue 6602. Compared 2932776 event pairs, 9211 based on Foata normal form. 0/377425 useless extension candidates. Maximal degree in co-relation 325359. Up to 372772 conditions per place. [2023-08-04 01:55:21,362 INFO L140 encePairwiseOnDemand]: 411/415 looper letters, 0 selfloop transitions, 0 changer transitions 149/149 dead transitions. [2023-08-04 01:55:21,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 149 transitions, 634 flow [2023-08-04 01:55:21,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 01:55:21,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 01:55:21,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1074 transitions. [2023-08-04 01:55:21,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5175903614457832 [2023-08-04 01:55:21,365 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1074 transitions. [2023-08-04 01:55:21,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1074 transitions. [2023-08-04 01:55:21,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:55:21,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1074 transitions. [2023-08-04 01:55:21,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 214.8) internal successors, (1074), 5 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:55:21,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:55:21,370 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:55:21,370 INFO L175 Difference]: Start difference. First operand has 108 places, 125 transitions, 388 flow. Second operand 5 states and 1074 transitions. [2023-08-04 01:55:21,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 149 transitions, 634 flow [2023-08-04 01:55:21,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 149 transitions, 618 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-04 01:55:21,430 INFO L231 Difference]: Finished difference. Result has 106 places, 0 transitions, 0 flow [2023-08-04 01:55:21,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=106, PETRI_TRANSITIONS=0} [2023-08-04 01:55:21,431 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 3 predicate places. [2023-08-04 01:55:21,431 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 0 transitions, 0 flow [2023-08-04 01:55:21,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 199.6) internal successors, (998), 5 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:55:21,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 01:55:21,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 01:55:21,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 01:55:21,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 01:55:21,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-04 01:55:21,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:55:21,638 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:55:21,639 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-04 01:55:21,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 259 transitions, 662 flow [2023-08-04 01:55:23,355 INFO L124 PetriNetUnfolderBase]: 5482/20280 cut-off events. [2023-08-04 01:55:23,355 INFO L125 PetriNetUnfolderBase]: For 4176/4176 co-relation queries the response was YES. [2023-08-04 01:55:23,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24665 conditions, 20280 events. 5482/20280 cut-off events. For 4176/4176 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 213569 event pairs, 178 based on Foata normal form. 0/17319 useless extension candidates. Maximal degree in co-relation 12225. Up to 1024 conditions per place. [2023-08-04 01:55:23,505 INFO L82 GeneralOperation]: Start removeDead. Operand has 218 places, 259 transitions, 662 flow [2023-08-04 01:55:23,617 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 218 places, 259 transitions, 662 flow [2023-08-04 01:55:23,617 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 01:55:23,617 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 218 places, 259 transitions, 662 flow [2023-08-04 01:55:23,617 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 218 places, 259 transitions, 662 flow [2023-08-04 01:55:23,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 259 transitions, 662 flow [2023-08-04 01:55:25,342 INFO L124 PetriNetUnfolderBase]: 5482/20280 cut-off events. [2023-08-04 01:55:25,342 INFO L125 PetriNetUnfolderBase]: For 4176/4176 co-relation queries the response was YES. [2023-08-04 01:55:25,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24665 conditions, 20280 events. 5482/20280 cut-off events. For 4176/4176 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 213569 event pairs, 178 based on Foata normal form. 0/17319 useless extension candidates. Maximal degree in co-relation 12225. Up to 1024 conditions per place. [2023-08-04 01:55:25,682 INFO L119 LiptonReduction]: Number of co-enabled transitions 21672 [2023-08-04 01:55:28,770 INFO L134 LiptonReduction]: Checked pairs total: 137372 [2023-08-04 01:55:28,770 INFO L136 LiptonReduction]: Total number of compositions: 160 [2023-08-04 01:55:28,771 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 01:55:28,772 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@373bcad4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 01:55:28,772 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 01:55:28,776 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 01:55:28,776 INFO L124 PetriNetUnfolderBase]: 2/65 cut-off events. [2023-08-04 01:55:28,776 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-04 01:55:28,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:55:28,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:55:28,776 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:55:28,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:55:28,776 INFO L85 PathProgramCache]: Analyzing trace with hash -976681149, now seen corresponding path program 1 times [2023-08-04 01:55:28,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:55:28,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582288429] [2023-08-04 01:55:28,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:55:28,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:55:28,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:55:28,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 01:55:28,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:55:28,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582288429] [2023-08-04 01:55:28,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582288429] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:55:28,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 01:55:28,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 01:55:28,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859493643] [2023-08-04 01:55:28,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:55:28,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:55:28,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:55:28,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:55:28,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 01:55:28,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 419 [2023-08-04 01:55:28,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 126 transitions, 396 flow. Second operand has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:55:28,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:55:28,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 419 [2023-08-04 01:55:28,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:56:01,320 INFO L124 PetriNetUnfolderBase]: 308292/426364 cut-off events. [2023-08-04 01:56:01,320 INFO L125 PetriNetUnfolderBase]: For 107486/107486 co-relation queries the response was YES. [2023-08-04 01:56:04,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 898868 conditions, 426364 events. 308292/426364 cut-off events. For 107486/107486 co-relation queries the response was YES. Maximal size of possible extension queue 6551. Compared 3078767 event pairs, 212879 based on Foata normal form. 0/396963 useless extension candidates. Maximal degree in co-relation 371874. Up to 398775 conditions per place. [2023-08-04 01:56:06,972 INFO L140 encePairwiseOnDemand]: 415/419 looper letters, 74 selfloop transitions, 2 changer transitions 0/128 dead transitions. [2023-08-04 01:56:06,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 128 transitions, 552 flow [2023-08-04 01:56:06,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:56:06,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:56:06,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 666 transitions. [2023-08-04 01:56:06,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5298329355608592 [2023-08-04 01:56:06,974 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 666 transitions. [2023-08-04 01:56:06,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 666 transitions. [2023-08-04 01:56:06,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:56:06,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 666 transitions. [2023-08-04 01:56:06,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:56:06,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:56:06,977 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:56:06,977 INFO L175 Difference]: Start difference. First operand has 103 places, 126 transitions, 396 flow. Second operand 3 states and 666 transitions. [2023-08-04 01:56:06,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 128 transitions, 552 flow [2023-08-04 01:56:07,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 128 transitions, 552 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 01:56:07,054 INFO L231 Difference]: Finished difference. Result has 105 places, 126 transitions, 406 flow [2023-08-04 01:56:07,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=419, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=406, PETRI_PLACES=105, PETRI_TRANSITIONS=126} [2023-08-04 01:56:07,054 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 2 predicate places. [2023-08-04 01:56:07,054 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 126 transitions, 406 flow [2023-08-04 01:56:07,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:56:07,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:56:07,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:56:07,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-04 01:56:07,055 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:56:07,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:56:07,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1895872999, now seen corresponding path program 1 times [2023-08-04 01:56:07,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:56:07,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664753089] [2023-08-04 01:56:07,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:56:07,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:56:07,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:56:07,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 01:56:07,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:56:07,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664753089] [2023-08-04 01:56:07,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664753089] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:56:07,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241917636] [2023-08-04 01:56:07,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:56:07,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:56:07,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:56:07,085 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 01:56:07,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-04 01:56:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:56:07,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 01:56:07,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:56:07,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 01:56:07,176 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:56:07,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241917636] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:56:07,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:56:07,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 01:56:07,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160559507] [2023-08-04 01:56:07,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:56:07,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:56:07,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:56:07,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:56:07,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:56:07,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 419 [2023-08-04 01:56:07,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 126 transitions, 406 flow. Second operand has 3 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:56:07,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:56:07,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 419 [2023-08-04 01:56:07,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:56:41,508 INFO L124 PetriNetUnfolderBase]: 306000/421070 cut-off events. [2023-08-04 01:56:41,509 INFO L125 PetriNetUnfolderBase]: For 111303/111303 co-relation queries the response was YES. [2023-08-04 01:56:46,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 889881 conditions, 421070 events. 306000/421070 cut-off events. For 111303/111303 co-relation queries the response was YES. Maximal size of possible extension queue 6798. Compared 3007126 event pairs, 211818 based on Foata normal form. 0/391495 useless extension candidates. Maximal degree in co-relation 889849. Up to 395505 conditions per place. [2023-08-04 01:56:49,109 INFO L140 encePairwiseOnDemand]: 416/419 looper letters, 77 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2023-08-04 01:56:49,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 131 transitions, 574 flow [2023-08-04 01:56:49,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:56:49,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:56:49,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 667 transitions. [2023-08-04 01:56:49,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306284805091488 [2023-08-04 01:56:49,111 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 667 transitions. [2023-08-04 01:56:49,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 667 transitions. [2023-08-04 01:56:49,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:56:49,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 667 transitions. [2023-08-04 01:56:49,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:56:49,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:56:49,129 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:56:49,129 INFO L175 Difference]: Start difference. First operand has 105 places, 126 transitions, 406 flow. Second operand 3 states and 667 transitions. [2023-08-04 01:56:49,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 131 transitions, 574 flow [2023-08-04 01:56:49,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 131 transitions, 572 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 01:56:49,209 INFO L231 Difference]: Finished difference. Result has 107 places, 127 transitions, 416 flow [2023-08-04 01:56:49,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=419, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=416, PETRI_PLACES=107, PETRI_TRANSITIONS=127} [2023-08-04 01:56:49,210 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 4 predicate places. [2023-08-04 01:56:49,210 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 127 transitions, 416 flow [2023-08-04 01:56:49,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:56:49,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:56:49,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:56:49,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-04 01:56:49,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-04 01:56:49,427 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:56:49,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:56:49,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1932337970, now seen corresponding path program 1 times [2023-08-04 01:56:49,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:56:49,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965670133] [2023-08-04 01:56:49,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:56:49,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:56:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:56:49,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 01:56:49,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:56:49,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965670133] [2023-08-04 01:56:49,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965670133] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:56:49,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449651720] [2023-08-04 01:56:49,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:56:49,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:56:49,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:56:49,471 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 01:56:49,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-04 01:56:49,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:56:49,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 01:56:49,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:56:49,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 01:56:49,572 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:56:49,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449651720] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:56:49,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:56:49,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 01:56:49,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584510242] [2023-08-04 01:56:49,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:56:49,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:56:49,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:56:49,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:56:49,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:56:49,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 419 [2023-08-04 01:56:49,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 127 transitions, 416 flow. Second operand has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:56:49,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:56:49,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 419 [2023-08-04 01:56:49,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:57:24,407 INFO L124 PetriNetUnfolderBase]: 304200/418808 cut-off events. [2023-08-04 01:57:24,412 INFO L125 PetriNetUnfolderBase]: For 103709/103709 co-relation queries the response was YES. [2023-08-04 01:57:29,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 884960 conditions, 418808 events. 304200/418808 cut-off events. For 103709/103709 co-relation queries the response was YES. Maximal size of possible extension queue 7255. Compared 3000211 event pairs, 210923 based on Foata normal form. 0/389587 useless extension candidates. Maximal degree in co-relation 392921. Up to 392561 conditions per place. [2023-08-04 01:57:32,492 INFO L140 encePairwiseOnDemand]: 416/419 looper letters, 80 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2023-08-04 01:57:32,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 134 transitions, 594 flow [2023-08-04 01:57:32,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:57:32,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:57:32,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 669 transitions. [2023-08-04 01:57:32,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5322195704057279 [2023-08-04 01:57:32,498 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 669 transitions. [2023-08-04 01:57:32,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 669 transitions. [2023-08-04 01:57:32,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:57:32,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 669 transitions. [2023-08-04 01:57:32,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:57:32,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:57:32,529 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:57:32,529 INFO L175 Difference]: Start difference. First operand has 107 places, 127 transitions, 416 flow. Second operand 3 states and 669 transitions. [2023-08-04 01:57:32,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 134 transitions, 594 flow [2023-08-04 01:57:32,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 134 transitions, 592 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 01:57:32,629 INFO L231 Difference]: Finished difference. Result has 109 places, 128 transitions, 426 flow [2023-08-04 01:57:32,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=419, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=426, PETRI_PLACES=109, PETRI_TRANSITIONS=128} [2023-08-04 01:57:32,630 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 6 predicate places. [2023-08-04 01:57:32,631 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 128 transitions, 426 flow [2023-08-04 01:57:32,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:57:32,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:57:32,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:57:32,637 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-04 01:57:32,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-04 01:57:32,836 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:57:32,837 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:57:32,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1892514029, now seen corresponding path program 1 times [2023-08-04 01:57:32,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:57:32,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624190876] [2023-08-04 01:57:32,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:57:32,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:57:32,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:57:32,872 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 01:57:32,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:57:32,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624190876] [2023-08-04 01:57:32,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624190876] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:57:32,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274235431] [2023-08-04 01:57:32,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:57:32,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:57:32,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:57:32,874 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 01:57:32,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-04 01:57:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:57:32,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 01:57:32,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:57:32,968 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 01:57:32,968 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:57:32,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274235431] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:57:32,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:57:32,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 01:57:32,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246065870] [2023-08-04 01:57:32,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:57:32,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:57:32,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:57:32,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:57:32,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:57:32,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 419 [2023-08-04 01:57:32,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 128 transitions, 426 flow. Second operand has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:57:32,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:57:32,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 419 [2023-08-04 01:57:32,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:58:08,449 INFO L124 PetriNetUnfolderBase]: 304056/423128 cut-off events. [2023-08-04 01:58:08,449 INFO L125 PetriNetUnfolderBase]: For 76805/76805 co-relation queries the response was YES. [2023-08-04 01:58:13,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 889593 conditions, 423128 events. 304056/423128 cut-off events. For 76805/76805 co-relation queries the response was YES. Maximal size of possible extension queue 7759. Compared 3104932 event pairs, 210236 based on Foata normal form. 0/395365 useless extension candidates. Maximal degree in co-relation 394201. Up to 389705 conditions per place. [2023-08-04 01:58:15,840 INFO L140 encePairwiseOnDemand]: 416/419 looper letters, 83 selfloop transitions, 2 changer transitions 0/137 dead transitions. [2023-08-04 01:58:15,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 137 transitions, 614 flow [2023-08-04 01:58:15,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:58:15,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:58:15,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 671 transitions. [2023-08-04 01:58:15,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338106603023071 [2023-08-04 01:58:15,842 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 671 transitions. [2023-08-04 01:58:15,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 671 transitions. [2023-08-04 01:58:15,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:58:15,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 671 transitions. [2023-08-04 01:58:15,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:58:15,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:58:15,845 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:58:15,845 INFO L175 Difference]: Start difference. First operand has 109 places, 128 transitions, 426 flow. Second operand 3 states and 671 transitions. [2023-08-04 01:58:15,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 137 transitions, 614 flow [2023-08-04 01:58:15,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 137 transitions, 612 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 01:58:15,960 INFO L231 Difference]: Finished difference. Result has 111 places, 129 transitions, 436 flow [2023-08-04 01:58:15,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=419, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=436, PETRI_PLACES=111, PETRI_TRANSITIONS=129} [2023-08-04 01:58:15,961 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 8 predicate places. [2023-08-04 01:58:15,961 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 129 transitions, 436 flow [2023-08-04 01:58:15,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:58:15,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:58:15,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:58:15,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-04 01:58:16,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-04 01:58:16,167 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:58:16,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:58:16,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1143053333, now seen corresponding path program 1 times [2023-08-04 01:58:16,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:58:16,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116832584] [2023-08-04 01:58:16,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:58:16,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:58:16,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:58:16,208 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 01:58:16,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:58:16,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116832584] [2023-08-04 01:58:16,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116832584] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:58:16,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053963261] [2023-08-04 01:58:16,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:58:16,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:58:16,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:58:16,211 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 01:58:16,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-04 01:58:16,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:58:16,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 01:58:16,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:58:16,328 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-04 01:58:16,328 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:58:16,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053963261] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:58:16,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:58:16,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 01:58:16,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806303624] [2023-08-04 01:58:16,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:58:16,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:58:16,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:58:16,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:58:16,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:58:16,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 419 [2023-08-04 01:58:16,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 129 transitions, 436 flow. Second operand has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:58:16,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:58:16,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 419 [2023-08-04 01:58:16,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-04 01:58:26,678 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-04 01:58:26,678 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-04 01:58:27,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-04 01:58:27,689 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 [2023-08-04 01:58:27,842 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-04 01:58:27,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-04 01:58:27,843 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-08-04 01:58:27,843 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-04 01:58:27,843 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was TIMEOUT (2/2) [2023-08-04 01:58:27,846 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 01:58:27,846 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 01:58:27,851 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 01:58:27 BasicIcfg [2023-08-04 01:58:27,851 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 01:58:27,852 INFO L158 Benchmark]: Toolchain (without parser) took 587069.13ms. Allocated memory was 625.0MB in the beginning and 16.0GB in the end (delta: 15.4GB). Free memory was 560.9MB in the beginning and 10.1GB in the end (delta: -9.5GB). Peak memory consumption was 6.1GB. Max. memory is 16.0GB. [2023-08-04 01:58:27,852 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 385.9MB. Free memory is still 332.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 01:58:27,852 INFO L158 Benchmark]: CACSL2BoogieTranslator took 222.44ms. Allocated memory is still 625.0MB. Free memory was 560.9MB in the beginning and 549.1MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-04 01:58:27,852 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.07ms. Allocated memory is still 625.0MB. Free memory was 549.1MB in the beginning and 547.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 01:58:27,852 INFO L158 Benchmark]: Boogie Preprocessor took 40.62ms. Allocated memory is still 625.0MB. Free memory was 547.0MB in the beginning and 545.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 01:58:27,853 INFO L158 Benchmark]: RCFGBuilder took 561.57ms. Allocated memory is still 625.0MB. Free memory was 545.4MB in the beginning and 527.4MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-04 01:58:27,853 INFO L158 Benchmark]: TraceAbstraction took 586204.02ms. Allocated memory was 625.0MB in the beginning and 16.0GB in the end (delta: 15.4GB). Free memory was 526.5MB in the beginning and 10.1GB in the end (delta: -9.5GB). Peak memory consumption was 6.0GB. Max. memory is 16.0GB. [2023-08-04 01:58:27,854 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 385.9MB. Free memory is still 332.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 222.44ms. Allocated memory is still 625.0MB. Free memory was 560.9MB in the beginning and 549.1MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 35.07ms. Allocated memory is still 625.0MB. Free memory was 549.1MB in the beginning and 547.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 40.62ms. Allocated memory is still 625.0MB. Free memory was 547.0MB in the beginning and 545.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 561.57ms. Allocated memory is still 625.0MB. Free memory was 545.4MB in the beginning and 527.4MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 586204.02ms. Allocated memory was 625.0MB in the beginning and 16.0GB in the end (delta: 15.4GB). Free memory was 526.5MB in the beginning and 10.1GB in the end (delta: -9.5GB). Peak memory consumption was 6.0GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.1s, 178 PlacesBefore, 63 PlacesAfterwards, 203 TransitionsBefore, 74 TransitionsAfterwards, 8244 CoEnabledTransitionPairs, 7 FixpointIterations, 39 TrivialSequentialCompositions, 68 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 26 ConcurrentYvCompositions, 14 ChoiceCompositions, 148 TotalNumberOfCompositions, 31121 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 26510, independent: 26317, independent conditional: 0, independent unconditional: 26317, dependent: 193, dependent conditional: 0, dependent unconditional: 193, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4566, independent: 4503, independent conditional: 0, independent unconditional: 4503, dependent: 63, dependent conditional: 0, dependent unconditional: 63, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 26510, independent: 21814, independent conditional: 0, independent unconditional: 21814, dependent: 130, dependent conditional: 0, dependent unconditional: 130, unknown: 4566, unknown conditional: 0, unknown unconditional: 4566] , Statistics on independence cache: Total cache size (in pairs): 907, Positive cache size: 891, Positive conditional cache size: 0, Positive unconditional cache size: 891, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.4s, 218 PlacesBefore, 103 PlacesAfterwards, 259 TransitionsBefore, 126 TransitionsAfterwards, 21672 CoEnabledTransitionPairs, 7 FixpointIterations, 39 TrivialSequentialCompositions, 64 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 34 ConcurrentYvCompositions, 18 ChoiceCompositions, 156 TotalNumberOfCompositions, 137084 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 76701, independent: 75976, independent conditional: 0, independent unconditional: 75976, dependent: 725, dependent conditional: 0, dependent unconditional: 725, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 11877, independent: 11761, independent conditional: 0, independent unconditional: 11761, dependent: 116, dependent conditional: 0, dependent unconditional: 116, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 76701, independent: 64215, independent conditional: 0, independent unconditional: 64215, dependent: 609, dependent conditional: 0, dependent unconditional: 609, unknown: 11877, unknown conditional: 0, unknown unconditional: 11877] , Statistics on independence cache: Total cache size (in pairs): 3487, Positive cache size: 3429, Positive conditional cache size: 0, Positive unconditional cache size: 3429, Negative cache size: 58, Negative conditional cache size: 0, Negative unconditional cache size: 58, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.2s, 218 PlacesBefore, 103 PlacesAfterwards, 259 TransitionsBefore, 126 TransitionsAfterwards, 21672 CoEnabledTransitionPairs, 7 FixpointIterations, 43 TrivialSequentialCompositions, 64 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 34 ConcurrentYvCompositions, 18 ChoiceCompositions, 160 TotalNumberOfCompositions, 137372 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 77094, independent: 76369, independent conditional: 0, independent unconditional: 76369, dependent: 725, dependent conditional: 0, dependent unconditional: 725, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 11798, independent: 11682, independent conditional: 0, independent unconditional: 11682, dependent: 116, dependent conditional: 0, dependent unconditional: 116, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 77094, independent: 64687, independent conditional: 0, independent unconditional: 64687, dependent: 609, dependent conditional: 0, dependent unconditional: 609, unknown: 11798, unknown conditional: 0, unknown unconditional: 11798] , Statistics on independence cache: Total cache size (in pairs): 3486, Positive cache size: 3428, Positive conditional cache size: 0, Positive unconditional cache size: 3428, Negative cache size: 58, Negative conditional cache size: 0, Negative unconditional cache size: 58, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 9 procedures, 202 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: 4.7s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.5s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=216occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 13 procedures, 234 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: 395.1s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 381.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 600 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 507 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1752 IncrementalHoareTripleChecker+Invalid, 1786 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 23 mSDtfsCounter, 1752 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 276 GetRequests, 242 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=401occurred in iteration=1, InterpolantAutomatonStates: 41, 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: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 409 NumberOfCodeBlocks, 409 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 464 ConstructedInterpolants, 0 QuantifiedInterpolants, 704 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1142 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 20 InterpolantComputations, 7 PerfectInterpolantSequences, 284/313 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 13 procedures, 234 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: 186.2s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 177.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 106 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 61 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 790 IncrementalHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 2 mSDtfsCounter, 790 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=436occurred in iteration=4, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 202 SizeOfPredicates, 0 NumberOfNonLiveVariables, 560 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 16/20 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown