/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 04:14:07,218 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 04:14:07,259 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-24 04:14:07,263 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 04:14:07,263 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 04:14:07,290 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 04:14:07,291 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 04:14:07,291 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 04:14:07,292 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 04:14:07,294 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 04:14:07,295 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 04:14:07,295 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 04:14:07,295 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 04:14:07,295 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 04:14:07,296 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 04:14:07,296 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 04:14:07,296 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 04:14:07,296 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 04:14:07,297 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 04:14:07,297 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 04:14:07,297 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 04:14:07,313 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 04:14:07,313 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 04:14:07,313 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 04:14:07,313 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 04:14:07,313 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 04:14:07,314 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 04:14:07,314 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 04:14:07,314 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 04:14:07,314 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 04:14:07,314 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 04:14:07,314 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 04:14:07,315 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 04:14:07,315 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 04:14:07,315 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 04:14:07,315 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-08-24 04:14:07,567 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 04:14:07,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 04:14:07,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 04:14:07,585 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 04:14:07,587 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 04:14:07,588 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i [2023-08-24 04:14:08,586 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 04:14:08,795 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 04:14:08,795 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i [2023-08-24 04:14:08,812 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cadf64ea3/8dec89f967e84e20b973df1a7ab1b66c/FLAG2fac96b53 [2023-08-24 04:14:08,822 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cadf64ea3/8dec89f967e84e20b973df1a7ab1b66c [2023-08-24 04:14:08,823 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 04:14:08,824 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 04:14:08,825 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 04:14:08,825 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 04:14:08,827 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 04:14:08,827 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 04:14:08" (1/1) ... [2023-08-24 04:14:08,828 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@778363c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:14:08, skipping insertion in model container [2023-08-24 04:14:08,828 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 04:14:08" (1/1) ... [2023-08-24 04:14:08,855 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 04:14:09,036 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30451,30464] [2023-08-24 04:14:09,040 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30681,30694] [2023-08-24 04:14:09,045 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30979,30992] [2023-08-24 04:14:09,054 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 04:14:09,067 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 04:14:09,089 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [208] [2023-08-24 04:14:09,090 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [209] [2023-08-24 04:14:09,101 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30451,30464] [2023-08-24 04:14:09,102 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30681,30694] [2023-08-24 04:14:09,104 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30979,30992] [2023-08-24 04:14:09,107 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 04:14:09,136 INFO L206 MainTranslator]: Completed translation [2023-08-24 04:14:09,138 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:14:09 WrapperNode [2023-08-24 04:14:09,138 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 04:14:09,139 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 04:14:09,139 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 04:14:09,139 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 04:14:09,144 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:14:09" (1/1) ... [2023-08-24 04:14:09,171 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:14:09" (1/1) ... [2023-08-24 04:14:09,194 INFO L138 Inliner]: procedures = 168, calls = 36, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 142 [2023-08-24 04:14:09,195 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 04:14:09,195 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 04:14:09,195 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 04:14:09,195 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 04:14:09,201 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:14:09" (1/1) ... [2023-08-24 04:14:09,201 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:14:09" (1/1) ... [2023-08-24 04:14:09,217 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:14:09" (1/1) ... [2023-08-24 04:14:09,217 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:14:09" (1/1) ... [2023-08-24 04:14:09,222 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:14:09" (1/1) ... [2023-08-24 04:14:09,224 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:14:09" (1/1) ... [2023-08-24 04:14:09,225 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:14:09" (1/1) ... [2023-08-24 04:14:09,226 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:14:09" (1/1) ... [2023-08-24 04:14:09,228 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 04:14:09,228 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 04:14:09,228 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 04:14:09,229 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 04:14:09,229 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:14:09" (1/1) ... [2023-08-24 04:14:09,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 04:14:09,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 04:14:09,282 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-24 04:14:09,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-24 04:14:09,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 04:14:09,341 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-24 04:14:09,341 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-24 04:14:09,341 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-24 04:14:09,341 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-24 04:14:09,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 04:14:09,342 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-24 04:14:09,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 04:14:09,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 04:14:09,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 04:14:09,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-08-24 04:14:09,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 04:14:09,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 04:14:09,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 04:14:09,345 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 04:14:09,468 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 04:14:09,469 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 04:14:09,660 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 04:14:09,667 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 04:14:09,667 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-24 04:14:09,668 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 04:14:09 BoogieIcfgContainer [2023-08-24 04:14:09,668 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 04:14:09,670 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 04:14:09,670 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 04:14:09,672 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 04:14:09,672 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 04:14:08" (1/3) ... [2023-08-24 04:14:09,672 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d95c79d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 04:14:09, skipping insertion in model container [2023-08-24 04:14:09,672 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:14:09" (2/3) ... [2023-08-24 04:14:09,673 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d95c79d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 04:14:09, skipping insertion in model container [2023-08-24 04:14:09,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 04:14:09" (3/3) ... [2023-08-24 04:14:09,674 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_ok.i [2023-08-24 04:14:09,685 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 04:14:09,685 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-24 04:14:09,685 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 04:14:09,745 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-24 04:14:09,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 148 transitions, 312 flow [2023-08-24 04:14:09,809 INFO L124 PetriNetUnfolderBase]: 11/146 cut-off events. [2023-08-24 04:14:09,809 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 04:14:09,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 146 events. 11/146 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 281 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2023-08-24 04:14:09,814 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 148 transitions, 312 flow [2023-08-24 04:14:09,820 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 137 transitions, 283 flow [2023-08-24 04:14:09,822 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 04:14:09,829 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 137 transitions, 283 flow [2023-08-24 04:14:09,830 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 137 transitions, 283 flow [2023-08-24 04:14:09,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 137 transitions, 283 flow [2023-08-24 04:14:09,855 INFO L124 PetriNetUnfolderBase]: 11/137 cut-off events. [2023-08-24 04:14:09,855 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-24 04:14:09,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 137 events. 11/137 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 266 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2023-08-24 04:14:09,858 INFO L119 LiptonReduction]: Number of co-enabled transitions 4498 [2023-08-24 04:14:13,752 INFO L134 LiptonReduction]: Checked pairs total: 9988 [2023-08-24 04:14:13,752 INFO L136 LiptonReduction]: Total number of compositions: 115 [2023-08-24 04:14:13,761 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 04:14:13,770 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@437de583, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 04:14:13,770 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-24 04:14:13,776 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 04:14:13,776 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2023-08-24 04:14:13,776 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-24 04:14:13,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:14:13,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-24 04:14:13,777 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-24 04:14:13,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:14:13,781 INFO L85 PathProgramCache]: Analyzing trace with hash -249038413, now seen corresponding path program 1 times [2023-08-24 04:14:13,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:14:13,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742997403] [2023-08-24 04:14:13,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:14:13,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:14:13,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:14:14,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:14:14,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:14:14,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742997403] [2023-08-24 04:14:14,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742997403] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 04:14:14,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 04:14:14,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 04:14:14,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52834173] [2023-08-24 04:14:14,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 04:14:14,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 04:14:14,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:14:14,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 04:14:14,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 04:14:14,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 263 [2023-08-24 04:14:14,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 38 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:14,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:14:14,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 263 [2023-08-24 04:14:14,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:14:14,357 INFO L124 PetriNetUnfolderBase]: 691/1209 cut-off events. [2023-08-24 04:14:14,357 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2023-08-24 04:14:14,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2360 conditions, 1209 events. 691/1209 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 5241 event pairs, 225 based on Foata normal form. 36/944 useless extension candidates. Maximal degree in co-relation 2149. Up to 671 conditions per place. [2023-08-24 04:14:14,365 INFO L140 encePairwiseOnDemand]: 257/263 looper letters, 51 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2023-08-24 04:14:14,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 59 transitions, 239 flow [2023-08-24 04:14:14,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 04:14:14,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 04:14:14,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 427 transitions. [2023-08-24 04:14:14,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.541191381495564 [2023-08-24 04:14:14,381 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 427 transitions. [2023-08-24 04:14:14,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 427 transitions. [2023-08-24 04:14:14,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:14:14,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 427 transitions. [2023-08-24 04:14:14,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:14,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:14,392 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:14,394 INFO L175 Difference]: Start difference. First operand has 38 places, 38 transitions, 85 flow. Second operand 3 states and 427 transitions. [2023-08-24 04:14:14,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 59 transitions, 239 flow [2023-08-24 04:14:14,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 59 transitions, 231 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-24 04:14:14,398 INFO L231 Difference]: Finished difference. Result has 38 places, 38 transitions, 94 flow [2023-08-24 04:14:14,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=35, 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=94, PETRI_PLACES=38, PETRI_TRANSITIONS=38} [2023-08-24 04:14:14,402 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 0 predicate places. [2023-08-24 04:14:14,402 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 38 transitions, 94 flow [2023-08-24 04:14:14,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:14,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:14:14,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:14:14,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 04:14:14,403 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-24 04:14:14,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:14:14,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1190865823, now seen corresponding path program 1 times [2023-08-24 04:14:14,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:14:14,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386900055] [2023-08-24 04:14:14,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:14:14,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:14:14,426 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-24 04:14:14,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1838759213] [2023-08-24 04:14:14,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:14:14,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 04:14:14,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 04:14:14,436 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) [2023-08-24 04:14:14,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-24 04:14:14,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:14:14,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-24 04:14:14,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 04:14:14,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:14:14,591 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 04:14:14,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:14:14,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386900055] [2023-08-24 04:14:14,591 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-24 04:14:14,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838759213] [2023-08-24 04:14:14,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838759213] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 04:14:14,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 04:14:14,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 04:14:14,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74272416] [2023-08-24 04:14:14,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 04:14:14,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 04:14:14,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:14:14,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 04:14:14,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 04:14:14,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 263 [2023-08-24 04:14:14,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 38 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 119.6) internal successors, (598), 5 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:14,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:14:14,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 263 [2023-08-24 04:14:14,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:14:14,774 INFO L124 PetriNetUnfolderBase]: 768/1353 cut-off events. [2023-08-24 04:14:14,774 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-08-24 04:14:14,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2746 conditions, 1353 events. 768/1353 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6290 event pairs, 289 based on Foata normal form. 0/1085 useless extension candidates. Maximal degree in co-relation 2118. Up to 631 conditions per place. [2023-08-24 04:14:14,780 INFO L140 encePairwiseOnDemand]: 256/263 looper letters, 72 selfloop transitions, 7 changer transitions 0/85 dead transitions. [2023-08-24 04:14:14,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 85 transitions, 358 flow [2023-08-24 04:14:14,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 04:14:14,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 04:14:14,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 669 transitions. [2023-08-24 04:14:14,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508745247148289 [2023-08-24 04:14:14,782 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 669 transitions. [2023-08-24 04:14:14,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 669 transitions. [2023-08-24 04:14:14,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:14:14,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 669 transitions. [2023-08-24 04:14:14,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 133.8) internal successors, (669), 5 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:14,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 263.0) internal successors, (1578), 6 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:14,787 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 263.0) internal successors, (1578), 6 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:14,787 INFO L175 Difference]: Start difference. First operand has 38 places, 38 transitions, 94 flow. Second operand 5 states and 669 transitions. [2023-08-24 04:14:14,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 85 transitions, 358 flow [2023-08-24 04:14:14,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 85 transitions, 356 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 04:14:14,789 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 125 flow [2023-08-24 04:14:14,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=125, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2023-08-24 04:14:14,789 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 5 predicate places. [2023-08-24 04:14:14,790 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 125 flow [2023-08-24 04:14:14,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 119.6) internal successors, (598), 5 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:14,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:14:14,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:14:14,815 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-24 04:14:14,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 04:14:14,996 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-24 04:14:14,996 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:14:15,004 INFO L85 PathProgramCache]: Analyzing trace with hash -975244755, now seen corresponding path program 1 times [2023-08-24 04:14:15,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:14:15,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501130339] [2023-08-24 04:14:15,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:14:15,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:14:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:14:15,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:14:15,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:14:15,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501130339] [2023-08-24 04:14:15,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501130339] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 04:14:15,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 04:14:15,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 04:14:15,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803362160] [2023-08-24 04:14:15,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 04:14:15,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 04:14:15,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:14:15,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 04:14:15,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 04:14:15,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 263 [2023-08-24 04:14:15,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:15,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:14:15,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 263 [2023-08-24 04:14:15,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:14:15,213 INFO L124 PetriNetUnfolderBase]: 938/1602 cut-off events. [2023-08-24 04:14:15,213 INFO L125 PetriNetUnfolderBase]: For 569/569 co-relation queries the response was YES. [2023-08-24 04:14:15,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3797 conditions, 1602 events. 938/1602 cut-off events. For 569/569 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6932 event pairs, 394 based on Foata normal form. 0/1357 useless extension candidates. Maximal degree in co-relation 3311. Up to 909 conditions per place. [2023-08-24 04:14:15,219 INFO L140 encePairwiseOnDemand]: 259/263 looper letters, 54 selfloop transitions, 3 changer transitions 3/64 dead transitions. [2023-08-24 04:14:15,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 64 transitions, 327 flow [2023-08-24 04:14:15,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 04:14:15,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 04:14:15,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 446 transitions. [2023-08-24 04:14:15,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5652724968314322 [2023-08-24 04:14:15,221 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 446 transitions. [2023-08-24 04:14:15,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 446 transitions. [2023-08-24 04:14:15,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:14:15,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 446 transitions. [2023-08-24 04:14:15,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:15,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:15,223 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:15,223 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 125 flow. Second operand 3 states and 446 transitions. [2023-08-24 04:14:15,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 64 transitions, 327 flow [2023-08-24 04:14:15,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 64 transitions, 317 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 04:14:15,226 INFO L231 Difference]: Finished difference. Result has 44 places, 41 transitions, 135 flow [2023-08-24 04:14:15,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=44, PETRI_TRANSITIONS=41} [2023-08-24 04:14:15,226 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 6 predicate places. [2023-08-24 04:14:15,227 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 41 transitions, 135 flow [2023-08-24 04:14:15,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:15,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:14:15,227 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:14:15,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 04:14:15,227 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-24 04:14:15,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:14:15,228 INFO L85 PathProgramCache]: Analyzing trace with hash 462982722, now seen corresponding path program 1 times [2023-08-24 04:14:15,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:14:15,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586325845] [2023-08-24 04:14:15,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:14:15,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:14:15,238 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-24 04:14:15,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [104706608] [2023-08-24 04:14:15,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:14:15,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 04:14:15,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 04:14:15,239 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) [2023-08-24 04:14:15,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-24 04:14:15,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:14:15,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-24 04:14:15,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 04:14:15,350 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:14:15,350 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 04:14:15,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:14:15,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586325845] [2023-08-24 04:14:15,350 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-24 04:14:15,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104706608] [2023-08-24 04:14:15,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104706608] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 04:14:15,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 04:14:15,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 04:14:15,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870157338] [2023-08-24 04:14:15,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 04:14:15,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 04:14:15,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:14:15,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 04:14:15,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 04:14:15,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 263 [2023-08-24 04:14:15,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 41 transitions, 135 flow. Second operand has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:15,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:14:15,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 263 [2023-08-24 04:14:15,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:14:15,436 INFO L124 PetriNetUnfolderBase]: 629/1157 cut-off events. [2023-08-24 04:14:15,437 INFO L125 PetriNetUnfolderBase]: For 421/421 co-relation queries the response was YES. [2023-08-24 04:14:15,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2605 conditions, 1157 events. 629/1157 cut-off events. For 421/421 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 4983 event pairs, 467 based on Foata normal form. 64/1036 useless extension candidates. Maximal degree in co-relation 2203. Up to 988 conditions per place. [2023-08-24 04:14:15,441 INFO L140 encePairwiseOnDemand]: 260/263 looper letters, 29 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2023-08-24 04:14:15,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 37 transitions, 177 flow [2023-08-24 04:14:15,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 04:14:15,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 04:14:15,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 399 transitions. [2023-08-24 04:14:15,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057034220532319 [2023-08-24 04:14:15,442 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 399 transitions. [2023-08-24 04:14:15,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 399 transitions. [2023-08-24 04:14:15,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:14:15,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 399 transitions. [2023-08-24 04:14:15,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:15,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:15,445 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:15,445 INFO L175 Difference]: Start difference. First operand has 44 places, 41 transitions, 135 flow. Second operand 3 states and 399 transitions. [2023-08-24 04:14:15,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 37 transitions, 177 flow [2023-08-24 04:14:15,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 37 transitions, 168 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-24 04:14:15,446 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 110 flow [2023-08-24 04:14:15,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-08-24 04:14:15,447 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 3 predicate places. [2023-08-24 04:14:15,447 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 110 flow [2023-08-24 04:14:15,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:15,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:14:15,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:14:15,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-24 04:14:15,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-24 04:14:15,652 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-24 04:14:15,652 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:14:15,653 INFO L85 PathProgramCache]: Analyzing trace with hash -2106315209, now seen corresponding path program 1 times [2023-08-24 04:14:15,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:14:15,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235203656] [2023-08-24 04:14:15,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:14:15,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:14:15,663 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-24 04:14:15,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1282038078] [2023-08-24 04:14:15,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:14:15,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 04:14:15,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 04:14:15,677 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) [2023-08-24 04:14:15,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-24 04:14:15,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:14:15,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-24 04:14:15,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 04:14:15,790 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-24 04:14:15,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:14:15,804 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 04:14:15,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:14:15,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235203656] [2023-08-24 04:14:15,804 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-24 04:14:15,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282038078] [2023-08-24 04:14:15,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282038078] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 04:14:15,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 04:14:15,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 04:14:15,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798870646] [2023-08-24 04:14:15,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 04:14:15,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 04:14:15,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:14:15,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 04:14:15,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 04:14:15,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 263 [2023-08-24 04:14:15,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:15,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:14:15,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 263 [2023-08-24 04:14:15,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:14:15,888 INFO L124 PetriNetUnfolderBase]: 509/940 cut-off events. [2023-08-24 04:14:15,888 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-24 04:14:15,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2078 conditions, 940 events. 509/940 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 4025 event pairs, 135 based on Foata normal form. 0/838 useless extension candidates. Maximal degree in co-relation 2067. Up to 552 conditions per place. [2023-08-24 04:14:15,891 INFO L140 encePairwiseOnDemand]: 259/263 looper letters, 38 selfloop transitions, 4 changer transitions 2/49 dead transitions. [2023-08-24 04:14:15,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 49 transitions, 229 flow [2023-08-24 04:14:15,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 04:14:15,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 04:14:15,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 409 transitions. [2023-08-24 04:14:15,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5183776932826363 [2023-08-24 04:14:15,892 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 409 transitions. [2023-08-24 04:14:15,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 409 transitions. [2023-08-24 04:14:15,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:14:15,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 409 transitions. [2023-08-24 04:14:15,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:15,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:15,895 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:15,895 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 110 flow. Second operand 3 states and 409 transitions. [2023-08-24 04:14:15,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 49 transitions, 229 flow [2023-08-24 04:14:15,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 49 transitions, 226 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-24 04:14:15,896 INFO L231 Difference]: Finished difference. Result has 42 places, 36 transitions, 113 flow [2023-08-24 04:14:15,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=42, PETRI_TRANSITIONS=36} [2023-08-24 04:14:15,897 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 4 predicate places. [2023-08-24 04:14:15,897 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 36 transitions, 113 flow [2023-08-24 04:14:15,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:15,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:14:15,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:14:15,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-24 04:14:16,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 04:14:16,103 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-24 04:14:16,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:14:16,103 INFO L85 PathProgramCache]: Analyzing trace with hash 80410237, now seen corresponding path program 1 times [2023-08-24 04:14:16,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:14:16,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083631108] [2023-08-24 04:14:16,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:14:16,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:14:16,113 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-24 04:14:16,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1155592611] [2023-08-24 04:14:16,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:14:16,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 04:14:16,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 04:14:16,114 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) [2023-08-24 04:14:16,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-24 04:14:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:14:16,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-24 04:14:16,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 04:14:16,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:14:16,431 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 04:14:16,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:14:16,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083631108] [2023-08-24 04:14:16,432 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-24 04:14:16,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155592611] [2023-08-24 04:14:16,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155592611] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 04:14:16,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 04:14:16,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 04:14:16,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861046376] [2023-08-24 04:14:16,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 04:14:16,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 04:14:16,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:14:16,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 04:14:16,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 04:14:16,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 263 [2023-08-24 04:14:16,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 113 flow. Second operand has 4 states, 4 states have (on average 122.75) internal successors, (491), 4 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:16,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:14:16,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 263 [2023-08-24 04:14:16,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:14:16,572 INFO L124 PetriNetUnfolderBase]: 602/1172 cut-off events. [2023-08-24 04:14:16,572 INFO L125 PetriNetUnfolderBase]: For 176/178 co-relation queries the response was YES. [2023-08-24 04:14:16,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2676 conditions, 1172 events. 602/1172 cut-off events. For 176/178 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5226 event pairs, 138 based on Foata normal form. 0/1113 useless extension candidates. Maximal degree in co-relation 2665. Up to 529 conditions per place. [2023-08-24 04:14:16,575 INFO L140 encePairwiseOnDemand]: 259/263 looper letters, 56 selfloop transitions, 4 changer transitions 5/72 dead transitions. [2023-08-24 04:14:16,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 72 transitions, 347 flow [2023-08-24 04:14:16,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 04:14:16,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 04:14:16,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 540 transitions. [2023-08-24 04:14:16,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5133079847908745 [2023-08-24 04:14:16,577 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 540 transitions. [2023-08-24 04:14:16,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 540 transitions. [2023-08-24 04:14:16,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:14:16,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 540 transitions. [2023-08-24 04:14:16,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:16,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 263.0) internal successors, (1315), 5 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:16,579 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 263.0) internal successors, (1315), 5 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:16,579 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 113 flow. Second operand 4 states and 540 transitions. [2023-08-24 04:14:16,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 72 transitions, 347 flow [2023-08-24 04:14:16,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 72 transitions, 339 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 04:14:16,581 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 134 flow [2023-08-24 04:14:16,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2023-08-24 04:14:16,582 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 6 predicate places. [2023-08-24 04:14:16,582 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 134 flow [2023-08-24 04:14:16,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 122.75) internal successors, (491), 4 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:16,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:14:16,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:14:16,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-24 04:14:16,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 04:14:16,789 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-24 04:14:16,789 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:14:16,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1189813252, now seen corresponding path program 1 times [2023-08-24 04:14:16,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:14:16,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904379423] [2023-08-24 04:14:16,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:14:16,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:14:16,805 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-24 04:14:16,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1786991890] [2023-08-24 04:14:16,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:14:16,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 04:14:16,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 04:14:16,816 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) [2023-08-24 04:14:16,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-24 04:14:16,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:14:16,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-24 04:14:16,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 04:14:16,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 04:14:16,997 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 12 [2023-08-24 04:14:17,009 INFO L322 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-08-24 04:14:17,010 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-08-24 04:14:17,041 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-24 04:14:17,088 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 44 [2023-08-24 04:14:17,164 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 45 [2023-08-24 04:14:17,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:14:17,215 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 04:14:17,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:14:17,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904379423] [2023-08-24 04:14:17,216 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-24 04:14:17,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786991890] [2023-08-24 04:14:17,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786991890] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 04:14:17,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 04:14:17,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-24 04:14:17,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347348361] [2023-08-24 04:14:17,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 04:14:17,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 04:14:17,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:14:17,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 04:14:17,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-24 04:14:17,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 263 [2023-08-24 04:14:17,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 134 flow. Second operand has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:17,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:14:17,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 263 [2023-08-24 04:14:17,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:14:17,483 INFO L124 PetriNetUnfolderBase]: 922/1795 cut-off events. [2023-08-24 04:14:17,483 INFO L125 PetriNetUnfolderBase]: For 372/378 co-relation queries the response was YES. [2023-08-24 04:14:17,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4097 conditions, 1795 events. 922/1795 cut-off events. For 372/378 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 9196 event pairs, 288 based on Foata normal form. 12/1731 useless extension candidates. Maximal degree in co-relation 4083. Up to 833 conditions per place. [2023-08-24 04:14:17,488 INFO L140 encePairwiseOnDemand]: 254/263 looper letters, 66 selfloop transitions, 11 changer transitions 8/92 dead transitions. [2023-08-24 04:14:17,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 92 transitions, 462 flow [2023-08-24 04:14:17,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 04:14:17,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 04:14:17,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 756 transitions. [2023-08-24 04:14:17,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41064638783269963 [2023-08-24 04:14:17,490 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 756 transitions. [2023-08-24 04:14:17,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 756 transitions. [2023-08-24 04:14:17,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:14:17,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 756 transitions. [2023-08-24 04:14:17,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 108.0) internal successors, (756), 7 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:17,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 263.0) internal successors, (2104), 8 states have internal predecessors, (2104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:17,493 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 263.0) internal successors, (2104), 8 states have internal predecessors, (2104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:17,493 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 134 flow. Second operand 7 states and 756 transitions. [2023-08-24 04:14:17,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 92 transitions, 462 flow [2023-08-24 04:14:17,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 92 transitions, 452 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-24 04:14:17,496 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 217 flow [2023-08-24 04:14:17,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=217, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2023-08-24 04:14:17,496 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 14 predicate places. [2023-08-24 04:14:17,496 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 217 flow [2023-08-24 04:14:17,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:17,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:14:17,497 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:14:17,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-24 04:14:17,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 04:14:17,702 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-24 04:14:17,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:14:17,702 INFO L85 PathProgramCache]: Analyzing trace with hash 839130447, now seen corresponding path program 1 times [2023-08-24 04:14:17,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:14:17,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081163002] [2023-08-24 04:14:17,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:14:17,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:14:17,713 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-24 04:14:17,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [666609826] [2023-08-24 04:14:17,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:14:17,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 04:14:17,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 04:14:17,715 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) [2023-08-24 04:14:17,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-24 04:14:17,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:14:17,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-24 04:14:17,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 04:14:17,829 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:14:17,830 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 04:14:17,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:14:17,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081163002] [2023-08-24 04:14:17,830 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-24 04:14:17,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666609826] [2023-08-24 04:14:17,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666609826] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 04:14:17,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 04:14:17,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 04:14:17,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873394307] [2023-08-24 04:14:17,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 04:14:17,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 04:14:17,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:14:17,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 04:14:17,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 04:14:17,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 263 [2023-08-24 04:14:17,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 217 flow. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:17,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:14:17,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 263 [2023-08-24 04:14:17,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:14:17,942 INFO L124 PetriNetUnfolderBase]: 739/1428 cut-off events. [2023-08-24 04:14:17,942 INFO L125 PetriNetUnfolderBase]: For 880/880 co-relation queries the response was YES. [2023-08-24 04:14:17,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3581 conditions, 1428 events. 739/1428 cut-off events. For 880/880 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5820 event pairs, 232 based on Foata normal form. 38/1466 useless extension candidates. Maximal degree in co-relation 3563. Up to 837 conditions per place. [2023-08-24 04:14:17,946 INFO L140 encePairwiseOnDemand]: 259/263 looper letters, 47 selfloop transitions, 2 changer transitions 6/59 dead transitions. [2023-08-24 04:14:17,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 59 transitions, 361 flow [2023-08-24 04:14:17,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 04:14:17,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 04:14:17,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 433 transitions. [2023-08-24 04:14:17,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5487959442332065 [2023-08-24 04:14:17,948 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 433 transitions. [2023-08-24 04:14:17,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 433 transitions. [2023-08-24 04:14:17,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:14:17,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 433 transitions. [2023-08-24 04:14:17,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:17,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:17,950 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:17,950 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 217 flow. Second operand 3 states and 433 transitions. [2023-08-24 04:14:17,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 59 transitions, 361 flow [2023-08-24 04:14:17,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 352 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-24 04:14:17,952 INFO L231 Difference]: Finished difference. Result has 55 places, 42 transitions, 196 flow [2023-08-24 04:14:17,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=55, PETRI_TRANSITIONS=42} [2023-08-24 04:14:17,953 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 17 predicate places. [2023-08-24 04:14:17,953 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 42 transitions, 196 flow [2023-08-24 04:14:17,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:17,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:14:17,953 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-24 04:14:17,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-24 04:14:18,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 04:14:18,158 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-24 04:14:18,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:14:18,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1317669106, now seen corresponding path program 1 times [2023-08-24 04:14:18,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:14:18,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227407928] [2023-08-24 04:14:18,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:14:18,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:14:18,170 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-24 04:14:18,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [798152484] [2023-08-24 04:14:18,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:14:18,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 04:14:18,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 04:14:18,171 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) [2023-08-24 04:14:18,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-24 04:14:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:14:18,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-24 04:14:18,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 04:14:18,668 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:14:18,668 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 04:14:19,114 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:14:19,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:14:19,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227407928] [2023-08-24 04:14:19,114 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-24 04:14:19,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798152484] [2023-08-24 04:14:19,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798152484] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 04:14:19,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-24 04:14:19,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-08-24 04:14:19,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859243193] [2023-08-24 04:14:19,114 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-24 04:14:19,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 04:14:19,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:14:19,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 04:14:19,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-08-24 04:14:19,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 263 [2023-08-24 04:14:19,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 196 flow. Second operand has 12 states, 12 states have (on average 121.58333333333333) internal successors, (1459), 12 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:19,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:14:19,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 263 [2023-08-24 04:14:19,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:14:19,723 INFO L124 PetriNetUnfolderBase]: 650/1323 cut-off events. [2023-08-24 04:14:19,723 INFO L125 PetriNetUnfolderBase]: For 876/876 co-relation queries the response was YES. [2023-08-24 04:14:19,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3422 conditions, 1323 events. 650/1323 cut-off events. For 876/876 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4542 event pairs, 118 based on Foata normal form. 20/1343 useless extension candidates. Maximal degree in co-relation 3403. Up to 269 conditions per place. [2023-08-24 04:14:19,728 INFO L140 encePairwiseOnDemand]: 258/263 looper letters, 104 selfloop transitions, 11 changer transitions 7/128 dead transitions. [2023-08-24 04:14:19,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 128 transitions, 752 flow [2023-08-24 04:14:19,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-24 04:14:19,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-24 04:14:19,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1283 transitions. [2023-08-24 04:14:19,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4878326996197719 [2023-08-24 04:14:19,730 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1283 transitions. [2023-08-24 04:14:19,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1283 transitions. [2023-08-24 04:14:19,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:14:19,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1283 transitions. [2023-08-24 04:14:19,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 128.3) internal successors, (1283), 10 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:19,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 263.0) internal successors, (2893), 11 states have internal predecessors, (2893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:19,735 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 263.0) internal successors, (2893), 11 states have internal predecessors, (2893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:19,736 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 196 flow. Second operand 10 states and 1283 transitions. [2023-08-24 04:14:19,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 128 transitions, 752 flow [2023-08-24 04:14:19,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 128 transitions, 732 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-24 04:14:19,739 INFO L231 Difference]: Finished difference. Result has 63 places, 48 transitions, 247 flow [2023-08-24 04:14:19,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=247, PETRI_PLACES=63, PETRI_TRANSITIONS=48} [2023-08-24 04:14:19,739 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 25 predicate places. [2023-08-24 04:14:19,739 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 48 transitions, 247 flow [2023-08-24 04:14:19,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 121.58333333333333) internal successors, (1459), 12 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:14:19,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:14:19,740 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] [2023-08-24 04:14:19,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-24 04:14:19,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 04:14:19,946 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-24 04:14:19,946 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:14:19,946 INFO L85 PathProgramCache]: Analyzing trace with hash 100212339, now seen corresponding path program 1 times [2023-08-24 04:14:19,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:14:19,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811544334] [2023-08-24 04:14:19,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:14:19,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:14:19,960 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-24 04:14:19,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [973403117] [2023-08-24 04:14:19,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:14:19,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 04:14:19,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 04:14:19,961 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) [2023-08-24 04:14:19,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-24 04:14:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:14:20,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 67 conjunts are in the unsatisfiable core [2023-08-24 04:14:20,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 04:14:20,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 04:14:20,389 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 12 [2023-08-24 04:14:20,402 INFO L322 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-08-24 04:14:20,402 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-08-24 04:14:20,443 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-24 04:14:20,581 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-08-24 04:14:20,893 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2023-08-24 04:14:21,043 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-08-24 04:14:21,061 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:14:21,061 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 04:14:50,628 WARN L234 SmtUtils]: Spent 21.23s on a formula simplification. DAG size of input: 123 DAG size of output: 84 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 04:15:07,185 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (mod c_~buffer_size~0 4294967296))) (let ((.cse1 (mod c_~next~0 4294967296)) (.cse10 (mod (+ c_~first~0 1) 4294967296)) (.cse8 (mod (mod (mod (+ c_~next~0 1) 4294967296) .cse0) 4294967296))) (or (<= .cse0 .cse1) (= (mod c_~send~0 256) 0) (let ((.cse6 (<= .cse10 2147483647)) (.cse7 (+ |c_~#buffer~0.offset| .cse10 (- 4294967296))) (.cse2 (+ .cse1 |c_~#buffer~0.offset|)) (.cse4 (+ |c_~#buffer~0.offset| .cse10)) (.cse5 (< 2147483647 .cse10))) (and (or (let ((.cse3 (+ |c_~#buffer~0.offset| .cse8))) (and (or (forall ((v_ArrVal_630 Int) (v_ArrVal_628 (Array Int Int))) (= (select (store (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_628) |c_~#buffer~0.base|) .cse2 v_ArrVal_630) .cse3 1) .cse4) 1)) .cse5) (or .cse6 (forall ((v_ArrVal_630 Int) (v_ArrVal_628 (Array Int Int))) (= (select (store (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_628) |c_~#buffer~0.base|) .cse2 v_ArrVal_630) .cse3 1) .cse7) 1))))) (< 2147483647 .cse8)) (or (<= .cse8 2147483647) (let ((.cse9 (+ |c_~#buffer~0.offset| .cse8 (- 4294967296)))) (and (or .cse6 (forall ((v_ArrVal_630 Int) (v_ArrVal_628 (Array Int Int))) (= (select (store (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_628) |c_~#buffer~0.base|) (+ .cse1 |c_~#buffer~0.offset| (- 4294967296)) v_ArrVal_630) .cse9 1) .cse7) 1))) (or (forall ((v_ArrVal_630 Int) (v_ArrVal_628 (Array Int Int))) (= 1 (select (store (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_628) |c_~#buffer~0.base|) .cse2 v_ArrVal_630) .cse9 1) .cse4))) .cse5)))))) (<= .cse0 .cse10) (<= .cse8 0)))) is different from false [2023-08-24 04:15:08,018 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:15:08,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:15:08,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811544334] [2023-08-24 04:15:08,018 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-24 04:15:08,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973403117] [2023-08-24 04:15:08,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973403117] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 04:15:08,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-24 04:15:08,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2023-08-24 04:15:08,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182017165] [2023-08-24 04:15:08,020 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-24 04:15:08,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-24 04:15:08,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:15:08,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-24 04:15:08,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=697, Unknown=1, NotChecked=54, Total=870 [2023-08-24 04:15:08,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 263 [2023-08-24 04:15:08,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 48 transitions, 247 flow. Second operand has 30 states, 30 states have (on average 75.13333333333334) internal successors, (2254), 30 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:15:08,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:15:08,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 263 [2023-08-24 04:15:08,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:15:30,408 WARN L234 SmtUtils]: Spent 18.92s on a formula simplification. DAG size of input: 204 DAG size of output: 107 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 04:15:51,740 WARN L234 SmtUtils]: Spent 12.78s on a formula simplification. DAG size of input: 162 DAG size of output: 141 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 04:16:17,636 WARN L234 SmtUtils]: Spent 24.63s on a formula simplification. DAG size of input: 231 DAG size of output: 134 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 04:16:44,305 WARN L234 SmtUtils]: Spent 25.67s on a formula simplification. DAG size of input: 219 DAG size of output: 122 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 04:17:08,950 WARN L234 SmtUtils]: Spent 23.41s on a formula simplification. DAG size of input: 250 DAG size of output: 157 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 04:17:56,246 WARN L234 SmtUtils]: Spent 44.94s on a formula simplification. DAG size of input: 280 DAG size of output: 239 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 04:18:03,327 WARN L234 SmtUtils]: Spent 5.83s on a formula simplification that was a NOOP. DAG size: 164 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 04:18:25,293 WARN L234 SmtUtils]: Spent 19.12s on a formula simplification. DAG size of input: 116 DAG size of output: 114 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 04:18:48,311 WARN L234 SmtUtils]: Spent 14.38s on a formula simplification. DAG size of input: 113 DAG size of output: 111 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 04:19:38,119 WARN L234 SmtUtils]: Spent 48.03s on a formula simplification. DAG size of input: 278 DAG size of output: 237 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 04:20:14,061 WARN L234 SmtUtils]: Spent 18.65s on a formula simplification. DAG size of input: 208 DAG size of output: 187 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 04:20:52,887 WARN L234 SmtUtils]: Spent 35.12s on a formula simplification. DAG size of input: 276 DAG size of output: 183 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 04:20:59,129 WARN L234 SmtUtils]: Spent 5.11s on a formula simplification that was a NOOP. DAG size: 133 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 04:21:21,532 WARN L234 SmtUtils]: Spent 18.50s on a formula simplification. DAG size of input: 189 DAG size of output: 168 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 04:21:24,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-24 04:22:19,387 WARN L234 SmtUtils]: Spent 53.85s on a formula simplification. DAG size of input: 212 DAG size of output: 157 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 04:22:38,831 WARN L234 SmtUtils]: Spent 15.75s on a formula simplification. DAG size of input: 177 DAG size of output: 156 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 04:23:36,976 WARN L234 SmtUtils]: Spent 54.91s on a formula simplification. DAG size of input: 209 DAG size of output: 154 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 04:23:52,789 WARN L234 SmtUtils]: Spent 7.83s on a formula simplification that was a NOOP. DAG size: 190 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 04:24:36,751 WARN L234 SmtUtils]: Spent 42.32s on a formula simplification. DAG size of input: 181 DAG size of output: 123 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 04:25:09,467 WARN L234 SmtUtils]: Spent 24.60s on a formula simplification. DAG size of input: 140 DAG size of output: 138 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 04:25:36,691 WARN L234 SmtUtils]: Spent 21.92s on a formula simplification. DAG size of input: 128 DAG size of output: 126 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 04:26:38,029 WARN L234 SmtUtils]: Spent 59.20s on a formula simplification. DAG size of input: 210 DAG size of output: 155 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 04:27:13,034 WARN L234 SmtUtils]: Spent 33.73s on a formula simplification. DAG size of input: 182 DAG size of output: 124 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 04:27:41,550 WARN L234 SmtUtils]: Spent 24.40s on a formula simplification. DAG size of input: 234 DAG size of output: 213 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 04:28:05,344 WARN L234 SmtUtils]: Spent 22.36s on a formula simplification. DAG size of input: 134 DAG size of output: 132 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-08-24 04:28:52,246 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 04:28:52,246 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 04:28:52,562 WARN L266 SmtUtils]: Removed 11 from assertion stack [2023-08-24 04:28:52,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-08-24 04:28:52,563 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2023-08-24 04:28:52,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-24 04:28:52,763 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,SelfDestructingSolverStorable9 [2023-08-24 04:28:52,764 WARN L619 AbstractCegarLoop]: Verification canceled: while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 218 for 45264ms.. [2023-08-24 04:28:52,765 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 8 remaining) [2023-08-24 04:28:52,765 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 8 remaining) [2023-08-24 04:28:52,765 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2023-08-24 04:28:52,765 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2023-08-24 04:28:52,765 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2023-08-24 04:28:52,765 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 8 remaining) [2023-08-24 04:28:52,765 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 8 remaining) [2023-08-24 04:28:52,765 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:28:52,768 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 04:28:52,768 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 04:28:52,769 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 04:28:52 BasicIcfg [2023-08-24 04:28:52,770 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 04:28:52,770 INFO L158 Benchmark]: Toolchain (without parser) took 883945.67ms. Allocated memory was 373.3MB in the beginning and 570.4MB in the end (delta: 197.1MB). Free memory was 329.2MB in the beginning and 420.2MB in the end (delta: -91.0MB). Peak memory consumption was 108.2MB. Max. memory is 16.0GB. [2023-08-24 04:28:52,770 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 373.3MB. Free memory was 351.0MB in the beginning and 350.8MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 04:28:52,770 INFO L158 Benchmark]: CACSL2BoogieTranslator took 313.44ms. Allocated memory is still 373.3MB. Free memory was 329.2MB in the beginning and 308.2MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-24 04:28:52,770 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.62ms. Allocated memory is still 373.3MB. Free memory was 308.2MB in the beginning and 306.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 04:28:52,770 INFO L158 Benchmark]: Boogie Preprocessor took 32.70ms. Allocated memory is still 373.3MB. Free memory was 306.1MB in the beginning and 304.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 04:28:52,771 INFO L158 Benchmark]: RCFGBuilder took 439.96ms. Allocated memory is still 373.3MB. Free memory was 304.0MB in the beginning and 284.1MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-24 04:28:52,771 INFO L158 Benchmark]: TraceAbstraction took 883099.98ms. Allocated memory was 373.3MB in the beginning and 570.4MB in the end (delta: 197.1MB). Free memory was 284.1MB in the beginning and 420.2MB in the end (delta: -136.1MB). Peak memory consumption was 64.2MB. Max. memory is 16.0GB. [2023-08-24 04:28:52,773 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 373.3MB. Free memory was 351.0MB in the beginning and 350.8MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 313.44ms. Allocated memory is still 373.3MB. Free memory was 329.2MB in the beginning and 308.2MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 55.62ms. Allocated memory is still 373.3MB. Free memory was 308.2MB in the beginning and 306.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 32.70ms. Allocated memory is still 373.3MB. Free memory was 306.1MB in the beginning and 304.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 439.96ms. Allocated memory is still 373.3MB. Free memory was 304.0MB in the beginning and 284.1MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 883099.98ms. Allocated memory was 373.3MB in the beginning and 570.4MB in the end (delta: 197.1MB). Free memory was 284.1MB in the beginning and 420.2MB in the end (delta: -136.1MB). Peak memory consumption was 64.2MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 208]: Unsoundness Warning unspecified type, defaulting to int C: short [208] - GenericResultAtLocation [Line: 209]: Unsoundness Warning unspecified type, defaulting to int C: short [209] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.9s, 133 PlacesBefore, 38 PlacesAfterwards, 137 TransitionsBefore, 38 TransitionsAfterwards, 4498 CoEnabledTransitionPairs, 7 FixpointIterations, 42 TrivialSequentialCompositions, 56 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 4 ChoiceCompositions, 115 TotalNumberOfCompositions, 9988 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5385, independent: 5083, independent conditional: 0, independent unconditional: 5083, dependent: 302, dependent conditional: 0, dependent unconditional: 302, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2544, independent: 2499, independent conditional: 0, independent unconditional: 2499, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5385, independent: 2584, independent conditional: 0, independent unconditional: 2584, dependent: 257, dependent conditional: 0, dependent unconditional: 257, unknown: 2544, unknown conditional: 0, unknown unconditional: 2544] , Statistics on independence cache: Total cache size (in pairs): 195, Positive cache size: 175, Positive conditional cache size: 0, Positive unconditional cache size: 175, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 749]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 218 for 45264ms.. - TimeoutResultAtElement [Line: 764]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 218 for 45264ms.. - TimeoutResultAtElement [Line: 763]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 218 for 45264ms.. - TimeoutResultAtElement [Line: 714]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 218 for 45264ms.. - TimeoutResultAtElement [Line: 731]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 218 for 45264ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 212 locations, 8 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: 883.0s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 826.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 942 SdHoareTripleChecker+Valid, 35.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 942 mSDsluCounter, 76 SdHoareTripleChecker+Invalid, 35.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 415 IncrementalHoareTripleChecker+Unchecked, 69 mSDsCounter, 96 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3154 IncrementalHoareTripleChecker+Invalid, 3665 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 96 mSolverCounterUnsat, 7 mSDtfsCounter, 3154 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 303 GetRequests, 184 SyntacticMatches, 2 SemanticMatches, 116 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1633 ImplicationChecksByTransitivity, 776.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=247occurred in iteration=9, InterpolantAutomatonStates: 41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 49.0s InterpolantComputationTime, 188 NumberOfCodeBlocks, 188 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 249 ConstructedInterpolants, 36 QuantifiedInterpolants, 11865 SizeOfPredicates, 38 NumberOfNonLiveVariables, 1941 ConjunctsInSsa, 154 ConjunctsInUnsatCore, 12 InterpolantComputations, 8 PerfectInterpolantSequences, 8/56 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown