/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 TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/weaver_test-semi1.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 21:11:05,952 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 21:11:06,023 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 21:11:06,028 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 21:11:06,029 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 21:11:06,030 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 21:11:06,030 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 21:11:06,056 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 21:11:06,057 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 21:11:06,060 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 21:11:06,061 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 21:11:06,061 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 21:11:06,062 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 21:11:06,063 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 21:11:06,063 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 21:11:06,063 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 21:11:06,064 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 21:11:06,064 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 21:11:06,064 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 21:11:06,064 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 21:11:06,065 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 21:11:06,065 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 21:11:06,065 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 21:11:06,065 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 21:11:06,066 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 21:11:06,066 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 21:11:06,066 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 21:11:06,067 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 21:11:06,067 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 21:11:06,067 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 21:11:06,068 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 21:11:06,068 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 21:11:06,068 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 21:11:06,068 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 21:11:06,069 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 21:11:06,069 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 21:11:06,070 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 21:11:06,070 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 21:11:06,070 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 21:11:06,070 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 21:11:06,070 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 21:11:06,070 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 21:11:06,270 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 21:11:06,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 21:11:06,296 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 21:11:06,297 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 21:11:06,297 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 21:11:06,298 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_test-semi1.wvr_bound2.c [2023-08-03 21:11:07,462 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 21:11:07,624 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 21:11:07,625 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_test-semi1.wvr_bound2.c [2023-08-03 21:11:07,630 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cdaf8c0f/bb2e98941f1b49da88301b80b216c720/FLAG2eeffa2d2 [2023-08-03 21:11:07,641 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cdaf8c0f/bb2e98941f1b49da88301b80b216c720 [2023-08-03 21:11:07,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 21:11:07,646 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 21:11:07,647 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 21:11:07,648 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 21:11:07,653 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 21:11:07,654 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 09:11:07" (1/1) ... [2023-08-03 21:11:07,654 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@331c6cc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:11:07, skipping insertion in model container [2023-08-03 21:11:07,654 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 09:11:07" (1/1) ... [2023-08-03 21:11:07,676 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 21:11:07,856 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_test-semi1.wvr_bound2.c[2141,2154] [2023-08-03 21:11:07,857 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 21:11:07,867 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 21:11:07,901 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_test-semi1.wvr_bound2.c[2141,2154] [2023-08-03 21:11:07,903 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 21:11:07,912 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 21:11:07,912 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 21:11:07,918 INFO L206 MainTranslator]: Completed translation [2023-08-03 21:11:07,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:11:07 WrapperNode [2023-08-03 21:11:07,918 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 21:11:07,919 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 21:11:07,919 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 21:11:07,919 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 21:11:07,925 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:11:07" (1/1) ... [2023-08-03 21:11:07,938 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:11:07" (1/1) ... [2023-08-03 21:11:07,963 INFO L138 Inliner]: procedures = 21, calls = 26, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 105 [2023-08-03 21:11:07,964 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 21:11:07,964 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 21:11:07,964 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 21:11:07,965 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 21:11:07,972 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:11:07" (1/1) ... [2023-08-03 21:11:07,972 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:11:07" (1/1) ... [2023-08-03 21:11:07,976 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:11:07" (1/1) ... [2023-08-03 21:11:07,977 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:11:07" (1/1) ... [2023-08-03 21:11:07,996 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:11:07" (1/1) ... [2023-08-03 21:11:07,999 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:11:07" (1/1) ... [2023-08-03 21:11:08,004 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:11:07" (1/1) ... [2023-08-03 21:11:08,005 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:11:07" (1/1) ... [2023-08-03 21:11:08,006 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 21:11:08,007 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 21:11:08,007 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 21:11:08,007 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 21:11:08,008 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:11:07" (1/1) ... [2023-08-03 21:11:08,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 21:11:08,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:11:08,042 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) [2023-08-03 21:11:08,051 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 [2023-08-03 21:11:08,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 21:11:08,079 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 21:11:08,079 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 21:11:08,079 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 21:11:08,079 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 21:11:08,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 21:11:08,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 21:11:08,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 21:11:08,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 21:11:08,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 21:11:08,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 21:11:08,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 21:11:08,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 21:11:08,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 21:11:08,082 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 21:11:08,167 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 21:11:08,169 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 21:11:08,419 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 21:11:08,463 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 21:11:08,464 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-03 21:11:08,465 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 09:11:08 BoogieIcfgContainer [2023-08-03 21:11:08,470 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 21:11:08,474 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 21:11:08,474 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 21:11:08,477 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 21:11:08,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 09:11:07" (1/3) ... [2023-08-03 21:11:08,478 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d9ba1ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 09:11:08, skipping insertion in model container [2023-08-03 21:11:08,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:11:07" (2/3) ... [2023-08-03 21:11:08,479 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d9ba1ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 09:11:08, skipping insertion in model container [2023-08-03 21:11:08,480 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 09:11:08" (3/3) ... [2023-08-03 21:11:08,482 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_test-semi1.wvr_bound2.c [2023-08-03 21:11:08,489 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 21:11:08,498 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 21:11:08,498 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 21:11:08,498 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 21:11:08,548 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-03 21:11:08,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 105 transitions, 232 flow [2023-08-03 21:11:08,688 INFO L124 PetriNetUnfolderBase]: 28/238 cut-off events. [2023-08-03 21:11:08,689 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 21:11:08,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 238 events. 28/238 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 719 event pairs, 0 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 130. Up to 8 conditions per place. [2023-08-03 21:11:08,693 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 105 transitions, 232 flow [2023-08-03 21:11:08,697 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 97 transitions, 216 flow [2023-08-03 21:11:08,700 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:11:08,711 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 97 transitions, 216 flow [2023-08-03 21:11:08,717 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 97 transitions, 216 flow [2023-08-03 21:11:08,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 97 transitions, 216 flow [2023-08-03 21:11:08,790 INFO L124 PetriNetUnfolderBase]: 28/206 cut-off events. [2023-08-03 21:11:08,790 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 21:11:08,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 206 events. 28/206 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 552 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 114. Up to 8 conditions per place. [2023-08-03 21:11:08,792 INFO L119 LiptonReduction]: Number of co-enabled transitions 582 [2023-08-03 21:11:10,825 INFO L134 LiptonReduction]: Checked pairs total: 1079 [2023-08-03 21:11:10,825 INFO L136 LiptonReduction]: Total number of compositions: 86 [2023-08-03 21:11:10,837 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 21:11:10,843 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;@38606411, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:11:10,843 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 21:11:10,846 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:11:10,846 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-08-03 21:11:10,846 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:11:10,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:11:10,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 21:11:10,847 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:11:10,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:11:10,851 INFO L85 PathProgramCache]: Analyzing trace with hash 385137180, now seen corresponding path program 1 times [2023-08-03 21:11:10,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:11:10,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118226169] [2023-08-03 21:11:10,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:11:10,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:11:10,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:11:11,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:11:11,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:11:11,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118226169] [2023-08-03 21:11:11,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118226169] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:11:11,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:11:11,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 21:11:11,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708635531] [2023-08-03 21:11:11,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:11:11,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:11:11,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:11:11,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:11:11,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:11:11,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 191 [2023-08-03 21:11:11,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 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) [2023-08-03 21:11:11,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:11:11,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 191 [2023-08-03 21:11:11,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:11:11,126 INFO L124 PetriNetUnfolderBase]: 57/152 cut-off events. [2023-08-03 21:11:11,126 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-03 21:11:11,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 152 events. 57/152 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 531 event pairs, 21 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 220. Up to 133 conditions per place. [2023-08-03 21:11:11,128 INFO L140 encePairwiseOnDemand]: 188/191 looper letters, 21 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2023-08-03 21:11:11,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 27 transitions, 122 flow [2023-08-03 21:11:11,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:11:11,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:11:11,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 279 transitions. [2023-08-03 21:11:11,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4869109947643979 [2023-08-03 21:11:11,140 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 279 transitions. [2023-08-03 21:11:11,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 279 transitions. [2023-08-03 21:11:11,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:11:11,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 279 transitions. [2023-08-03 21:11:11,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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) [2023-08-03 21:11:11,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 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) [2023-08-03 21:11:11,151 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 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) [2023-08-03 21:11:11,152 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 72 flow. Second operand 3 states and 279 transitions. [2023-08-03 21:11:11,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 27 transitions, 122 flow [2023-08-03 21:11:11,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 122 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 21:11:11,156 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 80 flow [2023-08-03 21:11:11,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2023-08-03 21:11:11,160 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2023-08-03 21:11:11,160 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 80 flow [2023-08-03 21:11:11,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 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) [2023-08-03 21:11:11,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:11:11,161 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 21:11:11,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 21:11:11,161 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:11:11,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:11:11,162 INFO L85 PathProgramCache]: Analyzing trace with hash -928458346, now seen corresponding path program 1 times [2023-08-03 21:11:11,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:11:11,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874594708] [2023-08-03 21:11:11,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:11:11,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:11:11,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 21:11:11,187 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 21:11:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 21:11:11,216 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 21:11:11,216 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 21:11:11,217 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 21:11:11,218 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 21:11:11,219 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 21:11:11,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 21:11:11,219 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 21:11:11,221 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 21:11:11,221 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 21:11:11,236 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-03 21:11:11,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 117 transitions, 282 flow [2023-08-03 21:11:11,302 INFO L124 PetriNetUnfolderBase]: 119/778 cut-off events. [2023-08-03 21:11:11,302 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-03 21:11:11,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 875 conditions, 778 events. 119/778 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3817 event pairs, 1 based on Foata normal form. 0/656 useless extension candidates. Maximal degree in co-relation 460. Up to 32 conditions per place. [2023-08-03 21:11:11,304 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 117 transitions, 282 flow [2023-08-03 21:11:11,307 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 109 transitions, 266 flow [2023-08-03 21:11:11,307 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:11:11,307 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 109 transitions, 266 flow [2023-08-03 21:11:11,307 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 103 places, 109 transitions, 266 flow [2023-08-03 21:11:11,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 109 transitions, 266 flow [2023-08-03 21:11:11,357 INFO L124 PetriNetUnfolderBase]: 119/650 cut-off events. [2023-08-03 21:11:11,357 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-03 21:11:11,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 747 conditions, 650 events. 119/650 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2860 event pairs, 1 based on Foata normal form. 0/544 useless extension candidates. Maximal degree in co-relation 396. Up to 32 conditions per place. [2023-08-03 21:11:11,363 INFO L119 LiptonReduction]: Number of co-enabled transitions 1356 [2023-08-03 21:11:13,115 INFO L134 LiptonReduction]: Checked pairs total: 3420 [2023-08-03 21:11:13,116 INFO L136 LiptonReduction]: Total number of compositions: 88 [2023-08-03 21:11:13,117 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 21:11:13,119 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;@38606411, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:11:13,119 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 21:11:13,121 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:11:13,122 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-08-03 21:11:13,122 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:11:13,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:11:13,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 21:11:13,123 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:11:13,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:11:13,133 INFO L85 PathProgramCache]: Analyzing trace with hash 590342516, now seen corresponding path program 1 times [2023-08-03 21:11:13,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:11:13,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197419600] [2023-08-03 21:11:13,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:11:13,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:11:13,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:11:13,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:11:13,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:11:13,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197419600] [2023-08-03 21:11:13,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197419600] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:11:13,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:11:13,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 21:11:13,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665977908] [2023-08-03 21:11:13,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:11:13,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:11:13,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:11:13,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:11:13,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:11:13,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 205 [2023-08-03 21:11:13,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 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) [2023-08-03 21:11:13,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:11:13,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 205 [2023-08-03 21:11:13,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:11:13,428 INFO L124 PetriNetUnfolderBase]: 1053/1879 cut-off events. [2023-08-03 21:11:13,428 INFO L125 PetriNetUnfolderBase]: For 360/360 co-relation queries the response was YES. [2023-08-03 21:11:13,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3913 conditions, 1879 events. 1053/1879 cut-off events. For 360/360 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 9418 event pairs, 641 based on Foata normal form. 0/1662 useless extension candidates. Maximal degree in co-relation 1484. Up to 1725 conditions per place. [2023-08-03 21:11:13,440 INFO L140 encePairwiseOnDemand]: 202/205 looper letters, 30 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2023-08-03 21:11:13,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 38 transitions, 188 flow [2023-08-03 21:11:13,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:11:13,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:11:13,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 300 transitions. [2023-08-03 21:11:13,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4878048780487805 [2023-08-03 21:11:13,443 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 300 transitions. [2023-08-03 21:11:13,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 300 transitions. [2023-08-03 21:11:13,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:11:13,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 300 transitions. [2023-08-03 21:11:13,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 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) [2023-08-03 21:11:13,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 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) [2023-08-03 21:11:13,446 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 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) [2023-08-03 21:11:13,447 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 118 flow. Second operand 3 states and 300 transitions. [2023-08-03 21:11:13,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 38 transitions, 188 flow [2023-08-03 21:11:13,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 38 transitions, 188 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 21:11:13,450 INFO L231 Difference]: Finished difference. Result has 39 places, 36 transitions, 130 flow [2023-08-03 21:11:13,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=39, PETRI_TRANSITIONS=36} [2023-08-03 21:11:13,451 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2023-08-03 21:11:13,451 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 36 transitions, 130 flow [2023-08-03 21:11:13,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 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) [2023-08-03 21:11:13,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:11:13,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:11:13,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 21:11:13,452 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:11:13,452 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:11:13,452 INFO L85 PathProgramCache]: Analyzing trace with hash 2069464550, now seen corresponding path program 1 times [2023-08-03 21:11:13,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:11:13,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940681887] [2023-08-03 21:11:13,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:11:13,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:11:13,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:11:13,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:11:13,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:11:13,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940681887] [2023-08-03 21:11:13,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940681887] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:11:13,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458680837] [2023-08-03 21:11:13,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:11:13,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:11:13,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:11:13,555 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) [2023-08-03 21:11:13,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 21:11:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:11:13,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 21:11:13,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:11:13,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 21:11:13,660 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 21:11:13,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458680837] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:11:13,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 21:11:13,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 21:11:13,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977822931] [2023-08-03 21:11:13,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:11:13,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:11:13,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:11:13,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:11:13,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:11:13,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 205 [2023-08-03 21:11:13,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 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) [2023-08-03 21:11:13,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:11:13,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 205 [2023-08-03 21:11:13,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:11:13,841 INFO L124 PetriNetUnfolderBase]: 1047/1887 cut-off events. [2023-08-03 21:11:13,841 INFO L125 PetriNetUnfolderBase]: For 287/287 co-relation queries the response was YES. [2023-08-03 21:11:13,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3932 conditions, 1887 events. 1047/1887 cut-off events. For 287/287 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 9535 event pairs, 644 based on Foata normal form. 0/1682 useless extension candidates. Maximal degree in co-relation 3904. Up to 1679 conditions per place. [2023-08-03 21:11:13,851 INFO L140 encePairwiseOnDemand]: 202/205 looper letters, 33 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-08-03 21:11:13,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 41 transitions, 210 flow [2023-08-03 21:11:13,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:11:13,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:11:13,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 302 transitions. [2023-08-03 21:11:13,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49105691056910566 [2023-08-03 21:11:13,854 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 302 transitions. [2023-08-03 21:11:13,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 302 transitions. [2023-08-03 21:11:13,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:11:13,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 302 transitions. [2023-08-03 21:11:13,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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) [2023-08-03 21:11:13,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 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) [2023-08-03 21:11:13,858 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 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) [2023-08-03 21:11:13,858 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 130 flow. Second operand 3 states and 302 transitions. [2023-08-03 21:11:13,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 41 transitions, 210 flow [2023-08-03 21:11:13,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 41 transitions, 208 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 21:11:13,862 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 140 flow [2023-08-03 21:11:13,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-08-03 21:11:13,864 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 5 predicate places. [2023-08-03 21:11:13,864 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 140 flow [2023-08-03 21:11:13,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 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) [2023-08-03 21:11:13,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:11:13,865 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 21:11:13,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-03 21:11:14,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:11:14,070 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:11:14,070 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:11:14,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1052103579, now seen corresponding path program 1 times [2023-08-03 21:11:14,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:11:14,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299722548] [2023-08-03 21:11:14,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:11:14,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:11:14,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:11:14,158 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:11:14,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:11:14,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299722548] [2023-08-03 21:11:14,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299722548] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:11:14,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001462554] [2023-08-03 21:11:14,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:11:14,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:11:14,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:11:14,160 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) [2023-08-03 21:11:14,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 21:11:14,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:11:14,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 21:11:14,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:11:14,248 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:11:14,248 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 21:11:14,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001462554] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:11:14,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 21:11:14,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 21:11:14,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762314576] [2023-08-03 21:11:14,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:11:14,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:11:14,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:11:14,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:11:14,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 21:11:14,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 205 [2023-08-03 21:11:14,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 140 flow. Second operand has 5 states, 5 states have (on average 89.6) internal successors, (448), 5 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:11:14,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:11:14,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 205 [2023-08-03 21:11:14,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:11:14,409 INFO L124 PetriNetUnfolderBase]: 1043/1877 cut-off events. [2023-08-03 21:11:14,409 INFO L125 PetriNetUnfolderBase]: For 352/352 co-relation queries the response was YES. [2023-08-03 21:11:14,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3999 conditions, 1877 events. 1043/1877 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 9483 event pairs, 427 based on Foata normal form. 4/1712 useless extension candidates. Maximal degree in co-relation 1517. Up to 1698 conditions per place. [2023-08-03 21:11:14,418 INFO L140 encePairwiseOnDemand]: 201/205 looper letters, 32 selfloop transitions, 4 changer transitions 0/41 dead transitions. [2023-08-03 21:11:14,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 41 transitions, 221 flow [2023-08-03 21:11:14,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 21:11:14,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 21:11:14,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 476 transitions. [2023-08-03 21:11:14,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46439024390243905 [2023-08-03 21:11:14,421 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 476 transitions. [2023-08-03 21:11:14,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 476 transitions. [2023-08-03 21:11:14,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:11:14,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 476 transitions. [2023-08-03 21:11:14,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 95.2) internal successors, (476), 5 states have internal predecessors, (476), 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) [2023-08-03 21:11:14,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 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) [2023-08-03 21:11:14,424 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 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) [2023-08-03 21:11:14,424 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 140 flow. Second operand 5 states and 476 transitions. [2023-08-03 21:11:14,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 41 transitions, 221 flow [2023-08-03 21:11:14,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 41 transitions, 212 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 21:11:14,427 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 149 flow [2023-08-03 21:11:14,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=149, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2023-08-03 21:11:14,428 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2023-08-03 21:11:14,428 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 149 flow [2023-08-03 21:11:14,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.6) internal successors, (448), 5 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:11:14,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:11:14,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:11:14,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 21:11:14,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:11:14,633 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:11:14,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:11:14,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1922969567, now seen corresponding path program 1 times [2023-08-03 21:11:14,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:11:14,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823683391] [2023-08-03 21:11:14,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:11:14,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:11:14,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:11:14,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 21:11:14,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:11:14,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823683391] [2023-08-03 21:11:14,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823683391] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:11:14,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465332336] [2023-08-03 21:11:14,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:11:14,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:11:14,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:11:14,676 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) [2023-08-03 21:11:14,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 21:11:14,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:11:14,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 21:11:14,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:11:14,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 21:11:14,751 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 21:11:14,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465332336] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:11:14,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 21:11:14,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 21:11:14,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288578873] [2023-08-03 21:11:14,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:11:14,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:11:14,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:11:14,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:11:14,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:11:14,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 205 [2023-08-03 21:11:14,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 149 flow. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 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) [2023-08-03 21:11:14,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:11:14,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 205 [2023-08-03 21:11:14,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:11:14,929 INFO L124 PetriNetUnfolderBase]: 953/1763 cut-off events. [2023-08-03 21:11:14,930 INFO L125 PetriNetUnfolderBase]: For 313/313 co-relation queries the response was YES. [2023-08-03 21:11:14,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3734 conditions, 1763 events. 953/1763 cut-off events. For 313/313 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 8956 event pairs, 616 based on Foata normal form. 0/1626 useless extension candidates. Maximal degree in co-relation 1674. Up to 1287 conditions per place. [2023-08-03 21:11:14,938 INFO L140 encePairwiseOnDemand]: 202/205 looper letters, 40 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-08-03 21:11:14,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 47 transitions, 263 flow [2023-08-03 21:11:14,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:11:14,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:11:14,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2023-08-03 21:11:14,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4991869918699187 [2023-08-03 21:11:14,940 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 307 transitions. [2023-08-03 21:11:14,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 307 transitions. [2023-08-03 21:11:14,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:11:14,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 307 transitions. [2023-08-03 21:11:14,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:11:14,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 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) [2023-08-03 21:11:14,943 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 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) [2023-08-03 21:11:14,943 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 149 flow. Second operand 3 states and 307 transitions. [2023-08-03 21:11:14,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 47 transitions, 263 flow [2023-08-03 21:11:14,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 47 transitions, 256 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 21:11:14,946 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 154 flow [2023-08-03 21:11:14,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2023-08-03 21:11:14,949 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 8 predicate places. [2023-08-03 21:11:14,949 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 154 flow [2023-08-03 21:11:14,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 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) [2023-08-03 21:11:14,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:11:14,950 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:11:14,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 21:11:15,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:11:15,155 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:11:15,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:11:15,156 INFO L85 PathProgramCache]: Analyzing trace with hash 62326548, now seen corresponding path program 1 times [2023-08-03 21:11:15,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:11:15,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188003802] [2023-08-03 21:11:15,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:11:15,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:11:15,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:11:15,232 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 21:11:15,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:11:15,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188003802] [2023-08-03 21:11:15,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188003802] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:11:15,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795375937] [2023-08-03 21:11:15,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:11:15,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:11:15,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:11:15,234 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) [2023-08-03 21:11:15,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 21:11:15,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:11:15,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 21:11:15,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:11:15,316 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 21:11:15,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:11:15,332 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 21:11:15,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795375937] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:11:15,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 21:11:15,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 21:11:15,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524037295] [2023-08-03 21:11:15,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 21:11:15,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:11:15,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:11:15,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:11:15,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:11:15,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 205 [2023-08-03 21:11:15,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 154 flow. Second operand has 5 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 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) [2023-08-03 21:11:15,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:11:15,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 205 [2023-08-03 21:11:15,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:11:15,555 INFO L124 PetriNetUnfolderBase]: 851/1563 cut-off events. [2023-08-03 21:11:15,556 INFO L125 PetriNetUnfolderBase]: For 399/399 co-relation queries the response was YES. [2023-08-03 21:11:15,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3490 conditions, 1563 events. 851/1563 cut-off events. For 399/399 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7592 event pairs, 370 based on Foata normal form. 2/1495 useless extension candidates. Maximal degree in co-relation 1367. Up to 1415 conditions per place. [2023-08-03 21:11:15,566 INFO L140 encePairwiseOnDemand]: 202/205 looper letters, 33 selfloop transitions, 3 changer transitions 0/41 dead transitions. [2023-08-03 21:11:15,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 41 transitions, 228 flow [2023-08-03 21:11:15,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 21:11:15,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 21:11:15,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 387 transitions. [2023-08-03 21:11:15,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4719512195121951 [2023-08-03 21:11:15,568 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 387 transitions. [2023-08-03 21:11:15,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 387 transitions. [2023-08-03 21:11:15,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:11:15,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 387 transitions. [2023-08-03 21:11:15,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 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) [2023-08-03 21:11:15,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 205.0) internal successors, (1025), 5 states have internal predecessors, (1025), 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) [2023-08-03 21:11:15,571 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 205.0) internal successors, (1025), 5 states have internal predecessors, (1025), 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) [2023-08-03 21:11:15,571 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 154 flow. Second operand 4 states and 387 transitions. [2023-08-03 21:11:15,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 41 transitions, 228 flow [2023-08-03 21:11:15,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 41 transitions, 226 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 21:11:15,574 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 150 flow [2023-08-03 21:11:15,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2023-08-03 21:11:15,575 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 10 predicate places. [2023-08-03 21:11:15,575 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 150 flow [2023-08-03 21:11:15,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 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) [2023-08-03 21:11:15,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:11:15,576 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:11:15,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-03 21:11:15,781 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 [2023-08-03 21:11:15,781 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:11:15,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:11:15,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1213376255, now seen corresponding path program 1 times [2023-08-03 21:11:15,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:11:15,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396129631] [2023-08-03 21:11:15,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:11:15,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:11:15,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:11:15,854 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 21:11:15,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:11:15,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396129631] [2023-08-03 21:11:15,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396129631] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:11:15,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247054182] [2023-08-03 21:11:15,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:11:15,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:11:15,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:11:15,856 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) [2023-08-03 21:11:15,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-03 21:11:15,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:11:15,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 21:11:15,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:11:15,992 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 21:11:15,992 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 21:11:15,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247054182] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:11:15,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 21:11:15,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 21:11:15,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002031097] [2023-08-03 21:11:15,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:11:15,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:11:15,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:11:15,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:11:15,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 21:11:16,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 205 [2023-08-03 21:11:16,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 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) [2023-08-03 21:11:16,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:11:16,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 205 [2023-08-03 21:11:16,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:11:16,163 INFO L124 PetriNetUnfolderBase]: 819/1507 cut-off events. [2023-08-03 21:11:16,163 INFO L125 PetriNetUnfolderBase]: For 307/307 co-relation queries the response was YES. [2023-08-03 21:11:16,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3333 conditions, 1507 events. 819/1507 cut-off events. For 307/307 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7232 event pairs, 44 based on Foata normal form. 16/1453 useless extension candidates. Maximal degree in co-relation 1982. Up to 1246 conditions per place. [2023-08-03 21:11:16,171 INFO L140 encePairwiseOnDemand]: 201/205 looper letters, 39 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2023-08-03 21:11:16,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 47 transitions, 256 flow [2023-08-03 21:11:16,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 21:11:16,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 21:11:16,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 482 transitions. [2023-08-03 21:11:16,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47024390243902436 [2023-08-03 21:11:16,173 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 482 transitions. [2023-08-03 21:11:16,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 482 transitions. [2023-08-03 21:11:16,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:11:16,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 482 transitions. [2023-08-03 21:11:16,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 96.4) internal successors, (482), 5 states have internal predecessors, (482), 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) [2023-08-03 21:11:16,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 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) [2023-08-03 21:11:16,176 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 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) [2023-08-03 21:11:16,176 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 150 flow. Second operand 5 states and 482 transitions. [2023-08-03 21:11:16,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 47 transitions, 256 flow [2023-08-03 21:11:16,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 47 transitions, 244 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 21:11:16,179 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 155 flow [2023-08-03 21:11:16,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2023-08-03 21:11:16,181 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 10 predicate places. [2023-08-03 21:11:16,181 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 155 flow [2023-08-03 21:11:16,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 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) [2023-08-03 21:11:16,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:11:16,181 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:11:16,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-03 21:11:16,386 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 [2023-08-03 21:11:16,387 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:11:16,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:11:16,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1941692174, now seen corresponding path program 1 times [2023-08-03 21:11:16,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:11:16,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430836305] [2023-08-03 21:11:16,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:11:16,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:11:16,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:11:16,446 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 21:11:16,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:11:16,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430836305] [2023-08-03 21:11:16,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430836305] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:11:16,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667088811] [2023-08-03 21:11:16,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:11:16,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:11:16,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:11:16,595 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) [2023-08-03 21:11:16,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-03 21:11:16,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:11:16,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 21:11:16,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:11:16,665 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 21:11:16,666 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 21:11:16,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667088811] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:11:16,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 21:11:16,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-03 21:11:16,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248662163] [2023-08-03 21:11:16,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:11:16,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:11:16,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:11:16,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:11:16,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:11:16,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 205 [2023-08-03 21:11:16,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 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) [2023-08-03 21:11:16,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:11:16,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 205 [2023-08-03 21:11:16,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:11:16,814 INFO L124 PetriNetUnfolderBase]: 826/1566 cut-off events. [2023-08-03 21:11:16,814 INFO L125 PetriNetUnfolderBase]: For 481/481 co-relation queries the response was YES. [2023-08-03 21:11:16,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3484 conditions, 1566 events. 826/1566 cut-off events. For 481/481 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 7779 event pairs, 556 based on Foata normal form. 0/1528 useless extension candidates. Maximal degree in co-relation 2119. Up to 1047 conditions per place. [2023-08-03 21:11:16,822 INFO L140 encePairwiseOnDemand]: 202/205 looper letters, 41 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-08-03 21:11:16,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 47 transitions, 269 flow [2023-08-03 21:11:16,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:11:16,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:11:16,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2023-08-03 21:11:16,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4991869918699187 [2023-08-03 21:11:16,824 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 307 transitions. [2023-08-03 21:11:16,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 307 transitions. [2023-08-03 21:11:16,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:11:16,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 307 transitions. [2023-08-03 21:11:16,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:11:16,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 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) [2023-08-03 21:11:16,826 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 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) [2023-08-03 21:11:16,826 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 155 flow. Second operand 3 states and 307 transitions. [2023-08-03 21:11:16,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 47 transitions, 269 flow [2023-08-03 21:11:16,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 47 transitions, 262 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 21:11:16,828 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 160 flow [2023-08-03 21:11:16,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2023-08-03 21:11:16,828 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 11 predicate places. [2023-08-03 21:11:16,829 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 160 flow [2023-08-03 21:11:16,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 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) [2023-08-03 21:11:16,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:11:16,829 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:11:16,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-03 21:11:17,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:11:17,039 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:11:17,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:11:17,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1517498065, now seen corresponding path program 1 times [2023-08-03 21:11:17,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:11:17,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786247539] [2023-08-03 21:11:17,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:11:17,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:11:17,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:11:17,100 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 21:11:17,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:11:17,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786247539] [2023-08-03 21:11:17,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786247539] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:11:17,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308406958] [2023-08-03 21:11:17,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:11:17,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:11:17,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:11:17,102 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) [2023-08-03 21:11:17,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-03 21:11:17,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:11:17,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 21:11:17,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:11:17,192 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 21:11:17,192 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:11:17,217 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 21:11:17,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308406958] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:11:17,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 21:11:17,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 21:11:17,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119983660] [2023-08-03 21:11:17,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 21:11:17,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:11:17,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:11:17,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:11:17,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:11:17,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 205 [2023-08-03 21:11:17,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 160 flow. Second operand has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 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) [2023-08-03 21:11:17,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:11:17,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 205 [2023-08-03 21:11:17,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:11:17,370 INFO L124 PetriNetUnfolderBase]: 778/1478 cut-off events. [2023-08-03 21:11:17,370 INFO L125 PetriNetUnfolderBase]: For 408/408 co-relation queries the response was YES. [2023-08-03 21:11:17,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3422 conditions, 1478 events. 778/1478 cut-off events. For 408/408 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 7017 event pairs, 356 based on Foata normal form. 8/1481 useless extension candidates. Maximal degree in co-relation 2127. Up to 1245 conditions per place. [2023-08-03 21:11:17,378 INFO L140 encePairwiseOnDemand]: 202/205 looper letters, 38 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2023-08-03 21:11:17,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 45 transitions, 252 flow [2023-08-03 21:11:17,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 21:11:17,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 21:11:17,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 391 transitions. [2023-08-03 21:11:17,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4768292682926829 [2023-08-03 21:11:17,380 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 391 transitions. [2023-08-03 21:11:17,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 391 transitions. [2023-08-03 21:11:17,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:11:17,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 391 transitions. [2023-08-03 21:11:17,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 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) [2023-08-03 21:11:17,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 205.0) internal successors, (1025), 5 states have internal predecessors, (1025), 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) [2023-08-03 21:11:17,382 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 205.0) internal successors, (1025), 5 states have internal predecessors, (1025), 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) [2023-08-03 21:11:17,383 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 160 flow. Second operand 4 states and 391 transitions. [2023-08-03 21:11:17,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 45 transitions, 252 flow [2023-08-03 21:11:17,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 45 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 21:11:17,389 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 156 flow [2023-08-03 21:11:17,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2023-08-03 21:11:17,390 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 13 predicate places. [2023-08-03 21:11:17,390 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 156 flow [2023-08-03 21:11:17,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 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) [2023-08-03 21:11:17,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:11:17,390 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:11:17,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-03 21:11:17,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:11:17,596 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:11:17,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:11:17,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1755545719, now seen corresponding path program 1 times [2023-08-03 21:11:17,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:11:17,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702803523] [2023-08-03 21:11:17,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:11:17,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:11:17,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:11:17,635 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 21:11:17,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:11:17,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702803523] [2023-08-03 21:11:17,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702803523] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:11:17,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396470981] [2023-08-03 21:11:17,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:11:17,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:11:17,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:11:17,637 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) [2023-08-03 21:11:17,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-03 21:11:17,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:11:17,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 21:11:17,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:11:17,709 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 21:11:17,709 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:11:17,721 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 21:11:17,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396470981] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:11:17,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 21:11:17,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 21:11:17,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919115117] [2023-08-03 21:11:17,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 21:11:17,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:11:17,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:11:17,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:11:17,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:11:17,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 205 [2023-08-03 21:11:17,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 156 flow. Second operand has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 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) [2023-08-03 21:11:17,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:11:17,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 205 [2023-08-03 21:11:17,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:11:17,865 INFO L124 PetriNetUnfolderBase]: 534/1034 cut-off events. [2023-08-03 21:11:17,865 INFO L125 PetriNetUnfolderBase]: For 399/399 co-relation queries the response was YES. [2023-08-03 21:11:17,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2405 conditions, 1034 events. 534/1034 cut-off events. For 399/399 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4310 event pairs, 215 based on Foata normal form. 32/1061 useless extension candidates. Maximal degree in co-relation 1885. Up to 444 conditions per place. [2023-08-03 21:11:17,870 INFO L140 encePairwiseOnDemand]: 201/205 looper letters, 43 selfloop transitions, 4 changer transitions 0/51 dead transitions. [2023-08-03 21:11:17,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 51 transitions, 286 flow [2023-08-03 21:11:17,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 21:11:17,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 21:11:17,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 397 transitions. [2023-08-03 21:11:17,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4841463414634146 [2023-08-03 21:11:17,872 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 397 transitions. [2023-08-03 21:11:17,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 397 transitions. [2023-08-03 21:11:17,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:11:17,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 397 transitions. [2023-08-03 21:11:17,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.25) internal successors, (397), 4 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:11:17,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 205.0) internal successors, (1025), 5 states have internal predecessors, (1025), 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) [2023-08-03 21:11:17,874 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 205.0) internal successors, (1025), 5 states have internal predecessors, (1025), 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) [2023-08-03 21:11:17,875 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 156 flow. Second operand 4 states and 397 transitions. [2023-08-03 21:11:17,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 51 transitions, 286 flow [2023-08-03 21:11:17,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 51 transitions, 280 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 21:11:17,877 INFO L231 Difference]: Finished difference. Result has 51 places, 38 transitions, 170 flow [2023-08-03 21:11:17,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=170, PETRI_PLACES=51, PETRI_TRANSITIONS=38} [2023-08-03 21:11:17,878 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 15 predicate places. [2023-08-03 21:11:17,878 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 38 transitions, 170 flow [2023-08-03 21:11:17,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 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) [2023-08-03 21:11:17,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:11:17,879 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:11:17,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-03 21:11:18,084 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,SelfDestructingSolverStorable10 [2023-08-03 21:11:18,084 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:11:18,085 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:11:18,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1210064542, now seen corresponding path program 1 times [2023-08-03 21:11:18,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:11:18,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153627656] [2023-08-03 21:11:18,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:11:18,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:11:18,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:11:18,146 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-03 21:11:18,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:11:18,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153627656] [2023-08-03 21:11:18,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153627656] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:11:18,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690854417] [2023-08-03 21:11:18,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:11:18,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:11:18,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:11:18,148 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) [2023-08-03 21:11:18,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-03 21:11:18,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:11:18,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 21:11:18,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:11:18,232 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-03 21:11:18,232 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:11:18,246 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-03 21:11:18,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690854417] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:11:18,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 21:11:18,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 21:11:18,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116893189] [2023-08-03 21:11:18,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 21:11:18,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:11:18,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:11:18,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:11:18,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:11:18,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 205 [2023-08-03 21:11:18,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 170 flow. Second operand has 5 states, 5 states have (on average 93.4) internal successors, (467), 5 states have internal predecessors, (467), 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) [2023-08-03 21:11:18,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:11:18,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 205 [2023-08-03 21:11:18,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:11:18,375 INFO L124 PetriNetUnfolderBase]: 530/1023 cut-off events. [2023-08-03 21:11:18,375 INFO L125 PetriNetUnfolderBase]: For 688/688 co-relation queries the response was YES. [2023-08-03 21:11:18,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2625 conditions, 1023 events. 530/1023 cut-off events. For 688/688 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4237 event pairs, 439 based on Foata normal form. 9/1027 useless extension candidates. Maximal degree in co-relation 2101. Up to 749 conditions per place. [2023-08-03 21:11:18,381 INFO L140 encePairwiseOnDemand]: 201/205 looper letters, 43 selfloop transitions, 3 changer transitions 2/52 dead transitions. [2023-08-03 21:11:18,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 52 transitions, 302 flow [2023-08-03 21:11:18,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 21:11:18,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 21:11:18,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 397 transitions. [2023-08-03 21:11:18,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4841463414634146 [2023-08-03 21:11:18,383 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 397 transitions. [2023-08-03 21:11:18,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 397 transitions. [2023-08-03 21:11:18,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:11:18,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 397 transitions. [2023-08-03 21:11:18,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.25) internal successors, (397), 4 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:11:18,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 205.0) internal successors, (1025), 5 states have internal predecessors, (1025), 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) [2023-08-03 21:11:18,385 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 205.0) internal successors, (1025), 5 states have internal predecessors, (1025), 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) [2023-08-03 21:11:18,386 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 170 flow. Second operand 4 states and 397 transitions. [2023-08-03 21:11:18,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 52 transitions, 302 flow [2023-08-03 21:11:18,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 52 transitions, 298 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 21:11:18,389 INFO L231 Difference]: Finished difference. Result has 55 places, 37 transitions, 174 flow [2023-08-03 21:11:18,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=55, PETRI_TRANSITIONS=37} [2023-08-03 21:11:18,389 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 19 predicate places. [2023-08-03 21:11:18,390 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 37 transitions, 174 flow [2023-08-03 21:11:18,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 93.4) internal successors, (467), 5 states have internal predecessors, (467), 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) [2023-08-03 21:11:18,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:11:18,390 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:11:18,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-03 21:11:18,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:11:18,596 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:11:18,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:11:18,597 INFO L85 PathProgramCache]: Analyzing trace with hash -407136926, now seen corresponding path program 1 times [2023-08-03 21:11:18,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:11:18,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363278878] [2023-08-03 21:11:18,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:11:18,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:11:18,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:11:18,798 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 21:11:18,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:11:18,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363278878] [2023-08-03 21:11:18,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363278878] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:11:18,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907322446] [2023-08-03 21:11:18,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:11:18,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:11:18,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:11:18,800 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) [2023-08-03 21:11:18,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-03 21:11:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:11:18,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-03 21:11:18,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:11:18,972 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 21:11:18,972 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:11:19,047 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 21:11:19,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907322446] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:11:19,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 21:11:19,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2023-08-03 21:11:19,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597401287] [2023-08-03 21:11:19,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 21:11:19,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:11:19,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:11:19,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:11:19,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:11:19,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 205 [2023-08-03 21:11:19,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 37 transitions, 174 flow. Second operand has 5 states, 5 states have (on average 94.4) internal successors, (472), 5 states have internal predecessors, (472), 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) [2023-08-03 21:11:19,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:11:19,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 205 [2023-08-03 21:11:19,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:11:19,258 INFO L124 PetriNetUnfolderBase]: 661/1266 cut-off events. [2023-08-03 21:11:19,258 INFO L125 PetriNetUnfolderBase]: For 1065/1065 co-relation queries the response was YES. [2023-08-03 21:11:19,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3321 conditions, 1266 events. 661/1266 cut-off events. For 1065/1065 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 6114 event pairs, 186 based on Foata normal form. 1/1263 useless extension candidates. Maximal degree in co-relation 3241. Up to 667 conditions per place. [2023-08-03 21:11:19,265 INFO L140 encePairwiseOnDemand]: 199/205 looper letters, 61 selfloop transitions, 7 changer transitions 35/107 dead transitions. [2023-08-03 21:11:19,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 107 transitions, 733 flow [2023-08-03 21:11:19,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 21:11:19,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 21:11:19,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 537 transitions. [2023-08-03 21:11:19,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5239024390243903 [2023-08-03 21:11:19,267 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 537 transitions. [2023-08-03 21:11:19,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 537 transitions. [2023-08-03 21:11:19,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:11:19,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 537 transitions. [2023-08-03 21:11:19,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.4) internal successors, (537), 5 states have internal predecessors, (537), 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) [2023-08-03 21:11:19,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 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) [2023-08-03 21:11:19,270 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 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) [2023-08-03 21:11:19,270 INFO L175 Difference]: Start difference. First operand has 55 places, 37 transitions, 174 flow. Second operand 5 states and 537 transitions. [2023-08-03 21:11:19,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 107 transitions, 733 flow [2023-08-03 21:11:19,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 107 transitions, 708 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-03 21:11:19,276 INFO L231 Difference]: Finished difference. Result has 58 places, 43 transitions, 217 flow [2023-08-03 21:11:19,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=217, PETRI_PLACES=58, PETRI_TRANSITIONS=43} [2023-08-03 21:11:19,277 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 22 predicate places. [2023-08-03 21:11:19,277 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 43 transitions, 217 flow [2023-08-03 21:11:19,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 94.4) internal successors, (472), 5 states have internal predecessors, (472), 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) [2023-08-03 21:11:19,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:11:19,277 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:11:19,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-03 21:11:19,483 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,SelfDestructingSolverStorable12 [2023-08-03 21:11:19,483 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:11:19,483 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:11:19,484 INFO L85 PathProgramCache]: Analyzing trace with hash -798165198, now seen corresponding path program 1 times [2023-08-03 21:11:19,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:11:19,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363388768] [2023-08-03 21:11:19,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:11:19,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:11:19,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:11:20,093 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 21:11:20,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:11:20,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363388768] [2023-08-03 21:11:20,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363388768] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:11:20,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144029096] [2023-08-03 21:11:20,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:11:20,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:11:20,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:11:20,096 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) [2023-08-03 21:11:20,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-03 21:11:20,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:11:20,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-03 21:11:20,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:11:20,254 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-08-03 21:11:20,254 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 21:11:20,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144029096] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:11:20,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 21:11:20,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 13 [2023-08-03 21:11:20,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700067864] [2023-08-03 21:11:20,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:11:20,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:11:20,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:11:20,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:11:20,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-08-03 21:11:20,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 205 [2023-08-03 21:11:20,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 43 transitions, 217 flow. Second operand has 5 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 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) [2023-08-03 21:11:20,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:11:20,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 205 [2023-08-03 21:11:20,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:11:20,488 INFO L124 PetriNetUnfolderBase]: 682/1403 cut-off events. [2023-08-03 21:11:20,488 INFO L125 PetriNetUnfolderBase]: For 2067/2067 co-relation queries the response was YES. [2023-08-03 21:11:20,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4709 conditions, 1403 events. 682/1403 cut-off events. For 2067/2067 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 7409 event pairs, 121 based on Foata normal form. 1/1402 useless extension candidates. Maximal degree in co-relation 4445. Up to 516 conditions per place. [2023-08-03 21:11:20,495 INFO L140 encePairwiseOnDemand]: 199/205 looper letters, 42 selfloop transitions, 5 changer transitions 61/112 dead transitions. [2023-08-03 21:11:20,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 112 transitions, 785 flow [2023-08-03 21:11:20,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 21:11:20,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 21:11:20,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 537 transitions. [2023-08-03 21:11:20,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5239024390243903 [2023-08-03 21:11:20,497 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 537 transitions. [2023-08-03 21:11:20,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 537 transitions. [2023-08-03 21:11:20,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:11:20,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 537 transitions. [2023-08-03 21:11:20,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.4) internal successors, (537), 5 states have internal predecessors, (537), 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) [2023-08-03 21:11:20,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 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) [2023-08-03 21:11:20,500 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 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) [2023-08-03 21:11:20,500 INFO L175 Difference]: Start difference. First operand has 58 places, 43 transitions, 217 flow. Second operand 5 states and 537 transitions. [2023-08-03 21:11:20,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 112 transitions, 785 flow [2023-08-03 21:11:20,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 112 transitions, 785 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 21:11:20,507 INFO L231 Difference]: Finished difference. Result has 63 places, 39 transitions, 220 flow [2023-08-03 21:11:20,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=220, PETRI_PLACES=63, PETRI_TRANSITIONS=39} [2023-08-03 21:11:20,508 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 27 predicate places. [2023-08-03 21:11:20,508 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 39 transitions, 220 flow [2023-08-03 21:11:20,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 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) [2023-08-03 21:11:20,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:11:20,508 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:11:20,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-03 21:11:20,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-03 21:11:20,714 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:11:20,715 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:11:20,715 INFO L85 PathProgramCache]: Analyzing trace with hash -262934800, now seen corresponding path program 1 times [2023-08-03 21:11:20,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:11:20,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957687423] [2023-08-03 21:11:20,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:11:20,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:11:20,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:11:21,207 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-03 21:11:21,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:11:21,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957687423] [2023-08-03 21:11:21,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957687423] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:11:21,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230127750] [2023-08-03 21:11:21,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:11:21,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:11:21,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:11:21,210 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 21:11:21,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-03 21:11:21,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:11:21,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-03 21:11:21,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:11:21,357 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 21:11:21,358 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:11:21,407 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 21:11:21,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230127750] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:11:21,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 21:11:21,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2023-08-03 21:11:21,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197802088] [2023-08-03 21:11:21,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 21:11:21,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-03 21:11:21,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:11:21,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-03 21:11:21,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-08-03 21:11:21,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 205 [2023-08-03 21:11:21,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 39 transitions, 220 flow. Second operand has 15 states, 15 states have (on average 74.33333333333333) internal successors, (1115), 15 states have internal predecessors, (1115), 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) [2023-08-03 21:11:21,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:11:21,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 205 [2023-08-03 21:11:21,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:11:22,489 INFO L124 PetriNetUnfolderBase]: 138/336 cut-off events. [2023-08-03 21:11:22,490 INFO L125 PetriNetUnfolderBase]: For 1051/1051 co-relation queries the response was YES. [2023-08-03 21:11:22,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1381 conditions, 336 events. 138/336 cut-off events. For 1051/1051 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1186 event pairs, 15 based on Foata normal form. 5/341 useless extension candidates. Maximal degree in co-relation 1330. Up to 107 conditions per place. [2023-08-03 21:11:22,491 INFO L140 encePairwiseOnDemand]: 186/205 looper letters, 0 selfloop transitions, 0 changer transitions 98/98 dead transitions. [2023-08-03 21:11:22,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 98 transitions, 777 flow [2023-08-03 21:11:22,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-03 21:11:22,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-03 21:11:22,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1707 transitions. [2023-08-03 21:11:22,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3620360551431601 [2023-08-03 21:11:22,498 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1707 transitions. [2023-08-03 21:11:22,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1707 transitions. [2023-08-03 21:11:22,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:11:22,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1707 transitions. [2023-08-03 21:11:22,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 74.21739130434783) internal successors, (1707), 23 states have internal predecessors, (1707), 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) [2023-08-03 21:11:22,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 205.0) internal successors, (4920), 24 states have internal predecessors, (4920), 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) [2023-08-03 21:11:22,509 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 205.0) internal successors, (4920), 24 states have internal predecessors, (4920), 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) [2023-08-03 21:11:22,509 INFO L175 Difference]: Start difference. First operand has 63 places, 39 transitions, 220 flow. Second operand 23 states and 1707 transitions. [2023-08-03 21:11:22,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 98 transitions, 777 flow [2023-08-03 21:11:22,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 98 transitions, 671 flow, removed 36 selfloop flow, removed 7 redundant places. [2023-08-03 21:11:22,512 INFO L231 Difference]: Finished difference. Result has 75 places, 0 transitions, 0 flow [2023-08-03 21:11:22,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=0, PETRI_PLACES=75, PETRI_TRANSITIONS=0} [2023-08-03 21:11:22,513 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 39 predicate places. [2023-08-03 21:11:22,513 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 0 transitions, 0 flow [2023-08-03 21:11:22,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 74.33333333333333) internal successors, (1115), 15 states have internal predecessors, (1115), 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) [2023-08-03 21:11:22,514 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-03 21:11:22,514 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-03 21:11:22,514 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 21:11:22,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-03 21:11:22,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-03 21:11:22,721 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:11:22,723 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 21:11:22,723 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 21:11:22,726 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 09:11:22 BasicIcfg [2023-08-03 21:11:22,726 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 21:11:22,726 INFO L158 Benchmark]: Toolchain (without parser) took 15080.03ms. Allocated memory was 530.6MB in the beginning and 641.7MB in the end (delta: 111.1MB). Free memory was 483.7MB in the beginning and 581.6MB in the end (delta: -97.9MB). Peak memory consumption was 14.4MB. Max. memory is 16.0GB. [2023-08-03 21:11:22,727 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 358.6MB. Free memory was 310.0MB in the beginning and 309.9MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 21:11:22,727 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.03ms. Allocated memory is still 530.6MB. Free memory was 483.4MB in the beginning and 472.5MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-03 21:11:22,727 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.43ms. Allocated memory is still 530.6MB. Free memory was 472.5MB in the beginning and 470.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 21:11:22,727 INFO L158 Benchmark]: Boogie Preprocessor took 42.34ms. Allocated memory is still 530.6MB. Free memory was 470.8MB in the beginning and 469.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 21:11:22,728 INFO L158 Benchmark]: RCFGBuilder took 462.70ms. Allocated memory is still 530.6MB. Free memory was 469.4MB in the beginning and 454.0MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-03 21:11:22,728 INFO L158 Benchmark]: TraceAbstraction took 14252.48ms. Allocated memory was 530.6MB in the beginning and 641.7MB in the end (delta: 111.1MB). Free memory was 453.3MB in the beginning and 581.6MB in the end (delta: -128.3MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 21:11:22,729 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 358.6MB. Free memory was 310.0MB in the beginning and 309.9MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 271.03ms. Allocated memory is still 530.6MB. Free memory was 483.4MB in the beginning and 472.5MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 44.43ms. Allocated memory is still 530.6MB. Free memory was 472.5MB in the beginning and 470.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 42.34ms. Allocated memory is still 530.6MB. Free memory was 470.8MB in the beginning and 469.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 462.70ms. Allocated memory is still 530.6MB. Free memory was 469.4MB in the beginning and 454.0MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 14252.48ms. Allocated memory was 530.6MB in the beginning and 641.7MB in the end (delta: 111.1MB). Free memory was 453.3MB in the beginning and 581.6MB in the end (delta: -128.3MB). There was no memory consumed. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 91 PlacesBefore, 26 PlacesAfterwards, 97 TransitionsBefore, 25 TransitionsAfterwards, 582 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 11 ConcurrentYvCompositions, 7 ChoiceCompositions, 86 TotalNumberOfCompositions, 1079 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 705, independent: 679, independent conditional: 0, independent unconditional: 679, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 302, independent: 296, independent conditional: 0, independent unconditional: 296, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 705, independent: 383, independent conditional: 0, independent unconditional: 383, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 302, unknown conditional: 0, unknown unconditional: 302] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 17, Positive conditional cache size: 0, Positive unconditional cache size: 17, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 103 PlacesBefore, 36 PlacesAfterwards, 109 TransitionsBefore, 35 TransitionsAfterwards, 1356 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 11 ConcurrentYvCompositions, 7 ChoiceCompositions, 88 TotalNumberOfCompositions, 3420 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2318, independent: 2268, independent conditional: 0, independent unconditional: 2268, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 739, independent: 722, independent conditional: 0, independent unconditional: 722, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2318, independent: 1546, independent conditional: 0, independent unconditional: 1546, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 739, unknown conditional: 0, unknown unconditional: 739] , Statistics on independence cache: Total cache size (in pairs): 64, Positive cache size: 60, Positive conditional cache size: 0, Positive unconditional cache size: 60, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 72]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 103 locations, 3 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: 2.6s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 48 IncrementalHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 1 mSDtfsCounter, 48 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=1, InterpolantAutomatonStates: 3, 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 with 2 thread instances CFG has 7 procedures, 111 locations, 3 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: 11.5s, OverallIterations: 13, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 798 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 670 mSDsluCounter, 972 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 945 mSDsCounter, 64 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2614 IncrementalHoareTripleChecker+Invalid, 2678 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 64 mSolverCounterUnsat, 27 mSDtfsCounter, 2614 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 568 GetRequests, 476 SyntacticMatches, 13 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=220occurred in iteration=12, InterpolantAutomatonStates: 71, 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, 0.4s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 621 NumberOfCodeBlocks, 621 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 782 ConstructedInterpolants, 0 QuantifiedInterpolants, 3036 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1642 ConjunctsInSsa, 80 ConjunctsInUnsatCore, 31 InterpolantComputations, 7 PerfectInterpolantSequences, 317/392 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 21:11:22,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...