/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/queue_ok_longest.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 04:30:21,817 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 04:30:21,879 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 04:30:21,887 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 04:30:21,888 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 04:30:21,924 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 04:30:21,924 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 04:30:21,925 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 04:30:21,926 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 04:30:21,929 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 04:30:21,929 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 04:30:21,929 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 04:30:21,930 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 04:30:21,931 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 04:30:21,931 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 04:30:21,931 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 04:30:21,931 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 04:30:21,931 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 04:30:21,932 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 04:30:21,932 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 04:30:21,932 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 04:30:21,932 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 04:30:21,932 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 04:30:21,933 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 04:30:21,933 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 04:30:21,933 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 04:30:21,934 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 04:30:21,934 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 04:30:21,934 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 04:30:21,934 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 04:30:21,935 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 04:30:21,935 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 04:30:21,935 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 04:30:21,935 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 04:30:21,936 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 04:30:21,936 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-24 04:30:22,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 04:30:22,240 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 04:30:22,242 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 04:30:22,243 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 04:30:22,244 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 04:30:22,245 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue_ok_longest.i [2023-08-24 04:30:23,366 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 04:30:23,678 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 04:30:23,678 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longest.i [2023-08-24 04:30:23,700 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77f530c7f/a0fd49f0c4594c92bcf2427d9e4dd930/FLAG5a181d548 [2023-08-24 04:30:23,712 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77f530c7f/a0fd49f0c4594c92bcf2427d9e4dd930 [2023-08-24 04:30:23,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 04:30:23,715 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 04:30:23,716 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 04:30:23,716 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 04:30:23,718 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 04:30:23,719 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 04:30:23" (1/1) ... [2023-08-24 04:30:23,720 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13dbc696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:30:23, skipping insertion in model container [2023-08-24 04:30:23,720 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 04:30:23" (1/1) ... [2023-08-24 04:30:23,768 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 04:30:24,225 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/queue_ok_longest.i[43280,43293] [2023-08-24 04:30:24,231 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/queue_ok_longest.i[43553,43566] [2023-08-24 04:30:24,238 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 04:30:24,251 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 04:30:24,276 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [258] [2023-08-24 04:30:24,278 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [258] [2023-08-24 04:30:24,292 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [750] [2023-08-24 04:30:24,312 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/queue_ok_longest.i[43280,43293] [2023-08-24 04:30:24,314 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/queue_ok_longest.i[43553,43566] [2023-08-24 04:30:24,316 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 04:30:24,379 INFO L206 MainTranslator]: Completed translation [2023-08-24 04:30:24,380 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:30:24 WrapperNode [2023-08-24 04:30:24,380 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 04:30:24,382 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 04:30:24,382 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 04:30:24,382 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 04:30:24,388 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:30:24" (1/1) ... [2023-08-24 04:30:24,424 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:30:24" (1/1) ... [2023-08-24 04:30:24,464 INFO L138 Inliner]: procedures = 274, calls = 57, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 203 [2023-08-24 04:30:24,464 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 04:30:24,465 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 04:30:24,465 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 04:30:24,465 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 04:30:24,473 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:30:24" (1/1) ... [2023-08-24 04:30:24,473 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:30:24" (1/1) ... [2023-08-24 04:30:24,488 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:30:24" (1/1) ... [2023-08-24 04:30:24,488 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:30:24" (1/1) ... [2023-08-24 04:30:24,496 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:30:24" (1/1) ... [2023-08-24 04:30:24,498 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:30:24" (1/1) ... [2023-08-24 04:30:24,500 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:30:24" (1/1) ... [2023-08-24 04:30:24,501 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:30:24" (1/1) ... [2023-08-24 04:30:24,504 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 04:30:24,505 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 04:30:24,505 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 04:30:24,505 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 04:30:24,506 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:30:24" (1/1) ... [2023-08-24 04:30:24,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 04:30:24,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 04:30:24,530 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 04:30:24,553 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 04:30:24,570 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-24 04:30:24,571 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-24 04:30:24,571 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-24 04:30:24,571 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-24 04:30:24,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 04:30:24,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 04:30:24,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 04:30:24,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 04:30:24,573 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-24 04:30:24,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 04:30:24,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 04:30:24,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 04:30:24,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 04:30:24,575 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 04:30:24,736 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 04:30:24,737 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 04:30:25,081 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 04:30:25,089 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 04:30:25,089 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-24 04:30:25,091 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 04:30:25 BoogieIcfgContainer [2023-08-24 04:30:25,091 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 04:30:25,092 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 04:30:25,093 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 04:30:25,095 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 04:30:25,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 04:30:23" (1/3) ... [2023-08-24 04:30:25,096 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33913ff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 04:30:25, skipping insertion in model container [2023-08-24 04:30:25,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:30:24" (2/3) ... [2023-08-24 04:30:25,096 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33913ff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 04:30:25, skipping insertion in model container [2023-08-24 04:30:25,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 04:30:25" (3/3) ... [2023-08-24 04:30:25,101 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok_longest.i [2023-08-24 04:30:25,115 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 04:30:25,116 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-24 04:30:25,116 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 04:30:25,257 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-24 04:30:25,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 216 transitions, 448 flow [2023-08-24 04:30:25,389 INFO L124 PetriNetUnfolderBase]: 13/214 cut-off events. [2023-08-24 04:30:25,390 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 04:30:25,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 214 events. 13/214 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 359 event pairs, 0 based on Foata normal form. 0/199 useless extension candidates. Maximal degree in co-relation 141. Up to 3 conditions per place. [2023-08-24 04:30:25,397 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 216 transitions, 448 flow [2023-08-24 04:30:25,408 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 199 places, 205 transitions, 419 flow [2023-08-24 04:30:25,411 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 04:30:25,421 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 199 places, 205 transitions, 419 flow [2023-08-24 04:30:25,424 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 199 places, 205 transitions, 419 flow [2023-08-24 04:30:25,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 205 transitions, 419 flow [2023-08-24 04:30:25,484 INFO L124 PetriNetUnfolderBase]: 13/205 cut-off events. [2023-08-24 04:30:25,485 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-24 04:30:25,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 205 events. 13/205 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 293 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 141. Up to 3 conditions per place. [2023-08-24 04:30:25,494 INFO L119 LiptonReduction]: Number of co-enabled transitions 9984 [2023-08-24 04:30:32,613 INFO L134 LiptonReduction]: Checked pairs total: 19772 [2023-08-24 04:30:32,613 INFO L136 LiptonReduction]: Total number of compositions: 186 [2023-08-24 04:30:32,624 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 04:30:32,628 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;@684d42dd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 04:30:32,629 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-24 04:30:32,630 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 04:30:32,630 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-24 04:30:32,630 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 04:30:32,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:30:32,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-24 04:30:32,631 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 04:30:32,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:30:32,634 INFO L85 PathProgramCache]: Analyzing trace with hash 839, now seen corresponding path program 1 times [2023-08-24 04:30:32,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:30:32,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037598114] [2023-08-24 04:30:32,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:30:32,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:30:32,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:30:32,722 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 04:30:32,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:30:32,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037598114] [2023-08-24 04:30:32,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037598114] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 04:30:32,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 04:30:32,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-24 04:30:32,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549870566] [2023-08-24 04:30:32,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 04:30:32,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-24 04:30:32,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:30:32,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-24 04:30:32,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-24 04:30:32,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 402 [2023-08-24 04:30:32,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 103 flow. Second operand has 2 states, 2 states have (on average 205.5) internal successors, (411), 2 states have internal predecessors, (411), 0 states have call successors, (0), 0 states 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 04:30:32,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:30:32,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 402 [2023-08-24 04:30:32,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:30:32,927 INFO L124 PetriNetUnfolderBase]: 829/1341 cut-off events. [2023-08-24 04:30:32,927 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2023-08-24 04:30:32,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2685 conditions, 1341 events. 829/1341 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5736 event pairs, 621 based on Foata normal form. 0/1143 useless extension candidates. Maximal degree in co-relation 2519. Up to 1297 conditions per place. [2023-08-24 04:30:32,936 INFO L140 encePairwiseOnDemand]: 401/402 looper letters, 38 selfloop transitions, 0 changer transitions 1/46 dead transitions. [2023-08-24 04:30:32,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 46 transitions, 179 flow [2023-08-24 04:30:32,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-24 04:30:32,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-24 04:30:32,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 450 transitions. [2023-08-24 04:30:32,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5597014925373134 [2023-08-24 04:30:32,955 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 450 transitions. [2023-08-24 04:30:32,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 450 transitions. [2023-08-24 04:30:32,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:30:32,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 450 transitions. [2023-08-24 04:30:32,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 225.0) internal successors, (450), 2 states have internal predecessors, (450), 0 states have call successors, (0), 0 states 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 04:30:32,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states 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 04:30:32,970 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states 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 04:30:32,971 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 103 flow. Second operand 2 states and 450 transitions. [2023-08-24 04:30:32,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 46 transitions, 179 flow [2023-08-24 04:30:32,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 46 transitions, 174 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-24 04:30:32,976 INFO L231 Difference]: Finished difference. Result has 44 places, 45 transitions, 94 flow [2023-08-24 04:30:32,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=94, PETRI_PLACES=44, PETRI_TRANSITIONS=45} [2023-08-24 04:30:32,981 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -3 predicate places. [2023-08-24 04:30:32,981 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 45 transitions, 94 flow [2023-08-24 04:30:32,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 205.5) internal successors, (411), 2 states have internal predecessors, (411), 0 states have call successors, (0), 0 states 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 04:30:32,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:30:32,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:30:32,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 04:30:32,982 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 04:30:32,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:30:32,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1319934340, now seen corresponding path program 1 times [2023-08-24 04:30:32,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:30:32,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152420202] [2023-08-24 04:30:32,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:30:32,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:30:33,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:30:33,242 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 04:30:33,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:30:33,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152420202] [2023-08-24 04:30:33,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152420202] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 04:30:33,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 04:30:33,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 04:30:33,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434518186] [2023-08-24 04:30:33,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 04:30:33,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 04:30:33,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:30:33,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 04:30:33,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 04:30:33,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 402 [2023-08-24 04:30:33,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 45 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states 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 04:30:33,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:30:33,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 402 [2023-08-24 04:30:33,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:30:33,328 INFO L124 PetriNetUnfolderBase]: 248/490 cut-off events. [2023-08-24 04:30:33,328 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-08-24 04:30:33,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 983 conditions, 490 events. 248/490 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2048 event pairs, 164 based on Foata normal form. 0/440 useless extension candidates. Maximal degree in co-relation 980. Up to 253 conditions per place. [2023-08-24 04:30:33,330 INFO L140 encePairwiseOnDemand]: 398/402 looper letters, 40 selfloop transitions, 2 changer transitions 8/53 dead transitions. [2023-08-24 04:30:33,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 53 transitions, 209 flow [2023-08-24 04:30:33,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 04:30:33,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 04:30:33,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 646 transitions. [2023-08-24 04:30:33,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5356550580431177 [2023-08-24 04:30:33,332 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 646 transitions. [2023-08-24 04:30:33,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 646 transitions. [2023-08-24 04:30:33,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:30:33,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 646 transitions. [2023-08-24 04:30:33,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states 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 04:30:33,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states 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 04:30:33,338 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states 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 04:30:33,338 INFO L175 Difference]: Start difference. First operand has 44 places, 45 transitions, 94 flow. Second operand 3 states and 646 transitions. [2023-08-24 04:30:33,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 53 transitions, 209 flow [2023-08-24 04:30:33,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 209 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 04:30:33,340 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 94 flow [2023-08-24 04:30:33,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2023-08-24 04:30:33,341 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -1 predicate places. [2023-08-24 04:30:33,341 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 94 flow [2023-08-24 04:30:33,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states 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 04:30:33,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:30:33,341 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 04:30:33,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 04:30:33,342 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 04:30:33,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:30:33,342 INFO L85 PathProgramCache]: Analyzing trace with hash -312369892, now seen corresponding path program 1 times [2023-08-24 04:30:33,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:30:33,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978985494] [2023-08-24 04:30:33,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:30:33,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:30:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:30:33,432 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 04:30:33,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:30:33,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978985494] [2023-08-24 04:30:33,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978985494] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 04:30:33,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 04:30:33,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 04:30:33,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860343923] [2023-08-24 04:30:33,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 04:30:33,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 04:30:33,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:30:33,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 04:30:33,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 04:30:33,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 402 [2023-08-24 04:30:33,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states 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 04:30:33,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:30:33,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 402 [2023-08-24 04:30:33,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:30:33,536 INFO L124 PetriNetUnfolderBase]: 245/490 cut-off events. [2023-08-24 04:30:33,536 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-08-24 04:30:33,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1025 conditions, 490 events. 245/490 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1755 event pairs, 155 based on Foata normal form. 0/452 useless extension candidates. Maximal degree in co-relation 1020. Up to 357 conditions per place. [2023-08-24 04:30:33,538 INFO L140 encePairwiseOnDemand]: 398/402 looper letters, 48 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2023-08-24 04:30:33,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 55 transitions, 226 flow [2023-08-24 04:30:33,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 04:30:33,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 04:30:33,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 646 transitions. [2023-08-24 04:30:33,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5356550580431177 [2023-08-24 04:30:33,541 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 646 transitions. [2023-08-24 04:30:33,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 646 transitions. [2023-08-24 04:30:33,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:30:33,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 646 transitions. [2023-08-24 04:30:33,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states 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 04:30:33,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states 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 04:30:33,546 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states 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 04:30:33,546 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 94 flow. Second operand 3 states and 646 transitions. [2023-08-24 04:30:33,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 55 transitions, 226 flow [2023-08-24 04:30:33,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 55 transitions, 222 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 04:30:33,548 INFO L231 Difference]: Finished difference. Result has 44 places, 43 transitions, 109 flow [2023-08-24 04:30:33,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=44, PETRI_TRANSITIONS=43} [2023-08-24 04:30:33,549 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -3 predicate places. [2023-08-24 04:30:33,549 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 43 transitions, 109 flow [2023-08-24 04:30:33,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states 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 04:30:33,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:30:33,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:30:33,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 04:30:33,550 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 04:30:33,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:30:33,551 INFO L85 PathProgramCache]: Analyzing trace with hash -824947493, now seen corresponding path program 1 times [2023-08-24 04:30:33,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:30:33,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848284003] [2023-08-24 04:30:33,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:30:33,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:30:33,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:30:33,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:30:33,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:30:33,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848284003] [2023-08-24 04:30:33,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848284003] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 04:30:33,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 04:30:33,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 04:30:33,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386188895] [2023-08-24 04:30:33,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 04:30:33,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 04:30:33,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:30:33,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 04:30:33,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 04:30:33,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 402 [2023-08-24 04:30:33,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 43 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:30:33,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:30:33,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 402 [2023-08-24 04:30:33,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:30:33,797 INFO L124 PetriNetUnfolderBase]: 187/394 cut-off events. [2023-08-24 04:30:33,798 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-08-24 04:30:33,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 871 conditions, 394 events. 187/394 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1256 event pairs, 12 based on Foata normal form. 42/410 useless extension candidates. Maximal degree in co-relation 865. Up to 341 conditions per place. [2023-08-24 04:30:33,799 INFO L140 encePairwiseOnDemand]: 399/402 looper letters, 43 selfloop transitions, 3 changer transitions 0/49 dead transitions. [2023-08-24 04:30:33,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 49 transitions, 216 flow [2023-08-24 04:30:33,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 04:30:33,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 04:30:33,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 628 transitions. [2023-08-24 04:30:33,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5207296849087893 [2023-08-24 04:30:33,802 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 628 transitions. [2023-08-24 04:30:33,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 628 transitions. [2023-08-24 04:30:33,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:30:33,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 628 transitions. [2023-08-24 04:30:33,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 0 states have call successors, (0), 0 states 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 04:30:33,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states 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 04:30:33,807 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states 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 04:30:33,807 INFO L175 Difference]: Start difference. First operand has 44 places, 43 transitions, 109 flow. Second operand 3 states and 628 transitions. [2023-08-24 04:30:33,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 49 transitions, 216 flow [2023-08-24 04:30:33,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 49 transitions, 213 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 04:30:33,809 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 112 flow [2023-08-24 04:30:33,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2023-08-24 04:30:33,811 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -2 predicate places. [2023-08-24 04:30:33,811 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 112 flow [2023-08-24 04:30:33,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:30:33,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:30:33,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:30:33,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 04:30:33,813 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 04:30:33,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:30:33,813 INFO L85 PathProgramCache]: Analyzing trace with hash 818194887, now seen corresponding path program 1 times [2023-08-24 04:30:33,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:30:33,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159232549] [2023-08-24 04:30:33,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:30:33,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:30:33,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:30:33,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:30:33,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:30:33,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159232549] [2023-08-24 04:30:33,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159232549] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 04:30:33,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538006136] [2023-08-24 04:30:33,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:30:33,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 04:30:33,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 04:30:33,893 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 04:30:33,900 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 04:30:34,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:30:34,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-24 04:30:34,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 04:30:34,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:30:34,087 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 04:30:34,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:30:34,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538006136] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 04:30:34,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 04:30:34,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-24 04:30:34,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169349125] [2023-08-24 04:30:34,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 04:30:34,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 04:30:34,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:30:34,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 04:30:34,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-24 04:30:34,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 402 [2023-08-24 04:30:34,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 112 flow. Second operand has 7 states, 7 states have (on average 203.57142857142858) internal successors, (1425), 7 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states 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 04:30:34,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:30:34,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 402 [2023-08-24 04:30:34,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:30:34,287 INFO L124 PetriNetUnfolderBase]: 246/531 cut-off events. [2023-08-24 04:30:34,287 INFO L125 PetriNetUnfolderBase]: For 36/38 co-relation queries the response was YES. [2023-08-24 04:30:34,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1200 conditions, 531 events. 246/531 cut-off events. For 36/38 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1513 event pairs, 100 based on Foata normal form. 12/507 useless extension candidates. Maximal degree in co-relation 1194. Up to 238 conditions per place. [2023-08-24 04:30:34,290 INFO L140 encePairwiseOnDemand]: 397/402 looper letters, 70 selfloop transitions, 10 changer transitions 1/84 dead transitions. [2023-08-24 04:30:34,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 84 transitions, 370 flow [2023-08-24 04:30:34,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 04:30:34,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 04:30:34,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1271 transitions. [2023-08-24 04:30:34,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5269485903814262 [2023-08-24 04:30:34,293 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1271 transitions. [2023-08-24 04:30:34,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1271 transitions. [2023-08-24 04:30:34,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:30:34,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1271 transitions. [2023-08-24 04:30:34,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 211.83333333333334) internal successors, (1271), 6 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states 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 04:30:34,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 402.0) internal successors, (2814), 7 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states 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 04:30:34,301 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 402.0) internal successors, (2814), 7 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states 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 04:30:34,302 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 112 flow. Second operand 6 states and 1271 transitions. [2023-08-24 04:30:34,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 84 transitions, 370 flow [2023-08-24 04:30:34,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 84 transitions, 367 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 04:30:34,304 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 170 flow [2023-08-24 04:30:34,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=170, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2023-08-24 04:30:34,304 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 6 predicate places. [2023-08-24 04:30:34,304 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 170 flow [2023-08-24 04:30:34,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 203.57142857142858) internal successors, (1425), 7 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states 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 04:30:34,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:30:34,306 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:30:34,316 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 04:30:34,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 04:30:34,511 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 04:30:34,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:30:34,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1030938622, now seen corresponding path program 2 times [2023-08-24 04:30:34,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:30:34,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525189658] [2023-08-24 04:30:34,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:30:34,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:30:34,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:30:34,653 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:30:34,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:30:34,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525189658] [2023-08-24 04:30:34,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525189658] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 04:30:34,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289280755] [2023-08-24 04:30:34,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 04:30:34,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 04:30:34,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 04:30:34,656 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 04:30:34,680 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 04:30:34,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 04:30:34,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 04:30:34,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-24 04:30:34,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 04:30:34,932 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:30:34,933 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 04:30:35,012 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:30:35,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289280755] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 04:30:35,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 04:30:35,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-08-24 04:30:35,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223900255] [2023-08-24 04:30:35,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 04:30:35,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-24 04:30:35,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:30:35,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-24 04:30:35,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-24 04:30:35,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 402 [2023-08-24 04:30:35,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 170 flow. Second operand has 13 states, 13 states have (on average 203.84615384615384) internal successors, (2650), 13 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states 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 04:30:35,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:30:35,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 402 [2023-08-24 04:30:35,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:30:35,350 INFO L124 PetriNetUnfolderBase]: 423/934 cut-off events. [2023-08-24 04:30:35,350 INFO L125 PetriNetUnfolderBase]: For 328/328 co-relation queries the response was YES. [2023-08-24 04:30:35,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2367 conditions, 934 events. 423/934 cut-off events. For 328/328 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 2534 event pairs, 91 based on Foata normal form. 24/900 useless extension candidates. Maximal degree in co-relation 2357. Up to 217 conditions per place. [2023-08-24 04:30:35,355 INFO L140 encePairwiseOnDemand]: 397/402 looper letters, 136 selfloop transitions, 22 changer transitions 0/161 dead transitions. [2023-08-24 04:30:35,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 161 transitions, 836 flow [2023-08-24 04:30:35,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-24 04:30:35,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-24 04:30:35,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2540 transitions. [2023-08-24 04:30:35,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5265339966832504 [2023-08-24 04:30:35,361 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2540 transitions. [2023-08-24 04:30:35,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2540 transitions. [2023-08-24 04:30:35,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:30:35,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2540 transitions. [2023-08-24 04:30:35,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 211.66666666666666) internal successors, (2540), 12 states have internal predecessors, (2540), 0 states have call successors, (0), 0 states 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 04:30:35,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 402.0) internal successors, (5226), 13 states have internal predecessors, (5226), 0 states have call successors, (0), 0 states 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 04:30:35,375 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 402.0) internal successors, (5226), 13 states have internal predecessors, (5226), 0 states have call successors, (0), 0 states 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 04:30:35,375 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 170 flow. Second operand 12 states and 2540 transitions. [2023-08-24 04:30:35,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 161 transitions, 836 flow [2023-08-24 04:30:35,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 161 transitions, 797 flow, removed 18 selfloop flow, removed 1 redundant places. [2023-08-24 04:30:35,381 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 320 flow [2023-08-24 04:30:35,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=320, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2023-08-24 04:30:35,382 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 23 predicate places. [2023-08-24 04:30:35,382 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 320 flow [2023-08-24 04:30:35,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 203.84615384615384) internal successors, (2650), 13 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states 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 04:30:35,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:30:35,383 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:30:35,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-24 04:30:35,589 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,SelfDestructingSolverStorable5 [2023-08-24 04:30:35,589 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 04:30:35,589 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:30:35,589 INFO L85 PathProgramCache]: Analyzing trace with hash -122187422, now seen corresponding path program 3 times [2023-08-24 04:30:35,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:30:35,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975766723] [2023-08-24 04:30:35,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:30:35,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:30:35,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:30:36,055 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:30:36,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:30:36,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975766723] [2023-08-24 04:30:36,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975766723] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 04:30:36,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293045682] [2023-08-24 04:30:36,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 04:30:36,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 04:30:36,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 04:30:36,061 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 04:30:36,110 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 04:30:36,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-24 04:30:36,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 04:30:36,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 47 conjunts are in the unsatisfiable core [2023-08-24 04:30:36,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 04:30:37,029 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 04:30:37,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 04:30:37,055 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 14 treesize of output 16 [2023-08-24 04:30:37,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 04:30:37,139 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 21 treesize of output 20 [2023-08-24 04:30:37,191 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 19 treesize of output 18 [2023-08-24 04:30:37,202 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 76 proven. 45 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2023-08-24 04:30:37,202 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 04:30:37,306 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_38| Int) (v_ArrVal_576 (Array Int Int)) (v_ArrVal_578 Int)) (let ((.cse0 (select (store |c_#memory_int| |c_~#stored_elements~0.base| v_ArrVal_576) |c_~#queue~0.base|)) (.cse1 (+ |c_~#queue~0.offset| 3204))) (or (< (select (store .cse0 (+ (* 4 |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_38|) |c_~#queue~0.offset|) v_ArrVal_578) .cse1) 800) (< (select .cse0 .cse1) |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_38|)))) is different from false [2023-08-24 04:30:37,326 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 04:30:37,327 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 42 [2023-08-24 04:30:37,337 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 04:30:37,340 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 77 [2023-08-24 04:30:37,352 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 36 treesize of output 28 [2023-08-24 04:30:37,377 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 4 [2023-08-24 04:30:37,404 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 04:30:37,404 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 46 [2023-08-24 04:30:37,566 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 68 proven. 45 refuted. 0 times theorem prover too weak. 204 trivial. 8 not checked. [2023-08-24 04:30:37,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293045682] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 04:30:37,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 04:30:37,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 7] total 25 [2023-08-24 04:30:37,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714322745] [2023-08-24 04:30:37,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 04:30:37,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-24 04:30:37,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:30:37,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-24 04:30:37,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=434, Unknown=1, NotChecked=44, Total=600 [2023-08-24 04:30:37,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 402 [2023-08-24 04:30:37,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 320 flow. Second operand has 25 states, 25 states have (on average 156.6) internal successors, (3915), 25 states have internal predecessors, (3915), 0 states have call successors, (0), 0 states 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 04:30:37,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:30:37,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 402 [2023-08-24 04:30:37,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:30:39,319 INFO L124 PetriNetUnfolderBase]: 821/1800 cut-off events. [2023-08-24 04:30:39,319 INFO L125 PetriNetUnfolderBase]: For 1316/1316 co-relation queries the response was YES. [2023-08-24 04:30:39,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4861 conditions, 1800 events. 821/1800 cut-off events. For 1316/1316 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 6406 event pairs, 57 based on Foata normal form. 8/1737 useless extension candidates. Maximal degree in co-relation 4844. Up to 285 conditions per place. [2023-08-24 04:30:39,329 INFO L140 encePairwiseOnDemand]: 390/402 looper letters, 267 selfloop transitions, 110 changer transitions 1/380 dead transitions. [2023-08-24 04:30:39,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 380 transitions, 2040 flow [2023-08-24 04:30:39,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-08-24 04:30:39,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-08-24 04:30:39,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 6885 transitions. [2023-08-24 04:30:39,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3982992016660882 [2023-08-24 04:30:39,348 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 6885 transitions. [2023-08-24 04:30:39,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 6885 transitions. [2023-08-24 04:30:39,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:30:39,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 6885 transitions. [2023-08-24 04:30:39,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 160.11627906976744) internal successors, (6885), 43 states have internal predecessors, (6885), 0 states have call successors, (0), 0 states 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 04:30:39,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 402.0) internal successors, (17688), 44 states have internal predecessors, (17688), 0 states have call successors, (0), 0 states 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 04:30:39,388 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 402.0) internal successors, (17688), 44 states have internal predecessors, (17688), 0 states have call successors, (0), 0 states 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 04:30:39,388 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 320 flow. Second operand 43 states and 6885 transitions. [2023-08-24 04:30:39,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 380 transitions, 2040 flow [2023-08-24 04:30:39,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 380 transitions, 2025 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-24 04:30:39,399 INFO L231 Difference]: Finished difference. Result has 134 places, 163 transitions, 1172 flow [2023-08-24 04:30:39,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=1172, PETRI_PLACES=134, PETRI_TRANSITIONS=163} [2023-08-24 04:30:39,399 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 87 predicate places. [2023-08-24 04:30:39,400 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 163 transitions, 1172 flow [2023-08-24 04:30:39,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 156.6) internal successors, (3915), 25 states have internal predecessors, (3915), 0 states have call successors, (0), 0 states 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 04:30:39,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:30:39,401 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:30:39,411 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 04:30:39,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 04:30:39,608 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 04:30:39,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:30:39,609 INFO L85 PathProgramCache]: Analyzing trace with hash -161773555, now seen corresponding path program 1 times [2023-08-24 04:30:39,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:30:39,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489784584] [2023-08-24 04:30:39,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:30:39,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:30:39,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:30:39,993 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:30:39,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:30:39,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489784584] [2023-08-24 04:30:39,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489784584] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 04:30:39,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055002978] [2023-08-24 04:30:39,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:30:39,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 04:30:39,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 04:30:39,995 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 04:30:40,022 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 04:30:40,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:30:40,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-24 04:30:40,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 04:30:40,326 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:30:40,326 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 04:30:40,631 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:30:40,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055002978] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 04:30:40,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 04:30:40,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2023-08-24 04:30:40,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833534051] [2023-08-24 04:30:40,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 04:30:40,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-24 04:30:40,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:30:40,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-24 04:30:40,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2023-08-24 04:30:40,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 402 [2023-08-24 04:30:40,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 163 transitions, 1172 flow. Second operand has 27 states, 27 states have (on average 204.25925925925927) internal successors, (5515), 27 states have internal predecessors, (5515), 0 states have call successors, (0), 0 states 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 04:30:40,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:30:40,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 402 [2023-08-24 04:30:40,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:30:41,638 INFO L124 PetriNetUnfolderBase]: 1371/3210 cut-off events. [2023-08-24 04:30:41,638 INFO L125 PetriNetUnfolderBase]: For 28289/28289 co-relation queries the response was YES. [2023-08-24 04:30:41,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14004 conditions, 3210 events. 1371/3210 cut-off events. For 28289/28289 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 11580 event pairs, 136 based on Foata normal form. 104/3290 useless extension candidates. Maximal degree in co-relation 13961. Up to 452 conditions per place. [2023-08-24 04:30:41,667 INFO L140 encePairwiseOnDemand]: 397/402 looper letters, 413 selfloop transitions, 75 changer transitions 0/491 dead transitions. [2023-08-24 04:30:41,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 491 transitions, 5503 flow [2023-08-24 04:30:41,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-24 04:30:41,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-24 04:30:41,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 5501 transitions. [2023-08-24 04:30:41,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263107539226942 [2023-08-24 04:30:41,678 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 5501 transitions. [2023-08-24 04:30:41,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 5501 transitions. [2023-08-24 04:30:41,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:30:41,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 5501 transitions. [2023-08-24 04:30:41,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 211.57692307692307) internal successors, (5501), 26 states have internal predecessors, (5501), 0 states have call successors, (0), 0 states 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 04:30:41,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 402.0) internal successors, (10854), 27 states have internal predecessors, (10854), 0 states have call successors, (0), 0 states 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 04:30:41,702 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 402.0) internal successors, (10854), 27 states have internal predecessors, (10854), 0 states have call successors, (0), 0 states 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 04:30:41,702 INFO L175 Difference]: Start difference. First operand has 134 places, 163 transitions, 1172 flow. Second operand 26 states and 5501 transitions. [2023-08-24 04:30:41,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 491 transitions, 5503 flow [2023-08-24 04:30:41,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 491 transitions, 5316 flow, removed 14 selfloop flow, removed 11 redundant places. [2023-08-24 04:30:41,747 INFO L231 Difference]: Finished difference. Result has 162 places, 201 transitions, 1742 flow [2023-08-24 04:30:41,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=1053, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1742, PETRI_PLACES=162, PETRI_TRANSITIONS=201} [2023-08-24 04:30:41,748 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 115 predicate places. [2023-08-24 04:30:41,748 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 201 transitions, 1742 flow [2023-08-24 04:30:41,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 204.25925925925927) internal successors, (5515), 27 states have internal predecessors, (5515), 0 states have call successors, (0), 0 states 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 04:30:41,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:30:41,749 INFO L208 CegarLoopForPetriNet]: trace histogram [24, 24, 24, 24, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:30:41,756 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 04:30:41,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 04:30:41,955 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 04:30:41,956 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:30:41,956 INFO L85 PathProgramCache]: Analyzing trace with hash -346057744, now seen corresponding path program 2 times [2023-08-24 04:30:41,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:30:41,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953633048] [2023-08-24 04:30:41,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:30:41,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:30:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:30:43,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1734 backedges. 0 proven. 1734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:30:43,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:30:43,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953633048] [2023-08-24 04:30:43,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953633048] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 04:30:43,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274272731] [2023-08-24 04:30:43,246 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 04:30:43,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 04:30:43,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 04:30:43,249 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 04:30:43,253 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 04:30:43,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 04:30:43,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 04:30:43,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 26 conjunts are in the unsatisfiable core [2023-08-24 04:30:43,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 04:30:43,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1734 backedges. 0 proven. 1734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:30:43,861 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 04:30:44,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1734 backedges. 0 proven. 1734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:30:44,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274272731] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 04:30:44,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 04:30:44,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 53 [2023-08-24 04:30:44,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761559791] [2023-08-24 04:30:44,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 04:30:44,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-08-24 04:30:44,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:30:44,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-08-24 04:30:44,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2023-08-24 04:30:44,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 402 [2023-08-24 04:30:44,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 201 transitions, 1742 flow. Second operand has 53 states, 53 states have (on average 204.41509433962264) internal successors, (10834), 53 states have internal predecessors, (10834), 0 states have call successors, (0), 0 states 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 04:30:44,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:30:44,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 402 [2023-08-24 04:30:44,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:30:47,099 INFO L124 PetriNetUnfolderBase]: 2697/6382 cut-off events. [2023-08-24 04:30:47,099 INFO L125 PetriNetUnfolderBase]: For 100006/100006 co-relation queries the response was YES. [2023-08-24 04:30:47,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29607 conditions, 6382 events. 2697/6382 cut-off events. For 100006/100006 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 23247 event pairs, 136 based on Foata normal form. 208/6566 useless extension candidates. Maximal degree in co-relation 29551. Up to 1128 conditions per place. [2023-08-24 04:30:47,154 INFO L140 encePairwiseOnDemand]: 397/402 looper letters, 829 selfloop transitions, 153 changer transitions 0/985 dead transitions. [2023-08-24 04:30:47,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 985 transitions, 11795 flow [2023-08-24 04:30:47,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-08-24 04:30:47,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2023-08-24 04:30:47,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 11000 transitions. [2023-08-24 04:30:47,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5262150784538844 [2023-08-24 04:30:47,170 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 11000 transitions. [2023-08-24 04:30:47,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 11000 transitions. [2023-08-24 04:30:47,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:30:47,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 11000 transitions. [2023-08-24 04:30:47,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 211.53846153846155) internal successors, (11000), 52 states have internal predecessors, (11000), 0 states have call successors, (0), 0 states 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 04:30:47,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 402.0) internal successors, (21306), 53 states have internal predecessors, (21306), 0 states have call successors, (0), 0 states 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 04:30:47,218 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 402.0) internal successors, (21306), 53 states have internal predecessors, (21306), 0 states have call successors, (0), 0 states 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 04:30:47,218 INFO L175 Difference]: Start difference. First operand has 162 places, 201 transitions, 1742 flow. Second operand 52 states and 11000 transitions. [2023-08-24 04:30:47,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 985 transitions, 11795 flow [2023-08-24 04:30:47,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 985 transitions, 11732 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-08-24 04:30:47,367 INFO L231 Difference]: Finished difference. Result has 229 places, 281 transitions, 3410 flow [2023-08-24 04:30:47,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=1679, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=3410, PETRI_PLACES=229, PETRI_TRANSITIONS=281} [2023-08-24 04:30:47,368 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 182 predicate places. [2023-08-24 04:30:47,368 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 281 transitions, 3410 flow [2023-08-24 04:30:47,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 204.41509433962264) internal successors, (10834), 53 states have internal predecessors, (10834), 0 states have call successors, (0), 0 states 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 04:30:47,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:30:47,371 INFO L208 CegarLoopForPetriNet]: trace histogram [50, 50, 50, 50, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:30:47,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-24 04:30:47,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 04:30:47,584 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 04:30:47,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:30:47,585 INFO L85 PathProgramCache]: Analyzing trace with hash 890330880, now seen corresponding path program 3 times [2023-08-24 04:30:47,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:30:47,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785760498] [2023-08-24 04:30:47,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:30:47,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:30:47,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:30:51,593 INFO L134 CoverageAnalysis]: Checked inductivity of 7675 backedges. 0 proven. 7675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:30:51,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:30:51,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785760498] [2023-08-24 04:30:51,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785760498] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 04:30:51,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16771009] [2023-08-24 04:30:51,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 04:30:51,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 04:30:51,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 04:30:51,597 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 04:30:51,618 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 04:30:53,112 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-08-24 04:30:53,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 04:30:53,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 59 conjunts are in the unsatisfiable core [2023-08-24 04:30:53,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 04:30:54,192 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 13 treesize of output 9 [2023-08-24 04:30:54,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 04:30:54,237 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 16 treesize of output 18 [2023-08-24 04:30:54,291 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 04:30:54,299 INFO L322 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2023-08-24 04:30:54,300 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2023-08-24 04:30:54,367 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 23 treesize of output 22 [2023-08-24 04:30:54,446 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 34 treesize of output 18 [2023-08-24 04:30:54,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 04:30:54,487 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 16 treesize of output 18 [2023-08-24 04:30:54,583 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 04:30:54,591 INFO L322 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2023-08-24 04:30:54,592 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 27 [2023-08-24 04:30:54,641 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 23 treesize of output 22 [2023-08-24 04:30:54,651 INFO L134 CoverageAnalysis]: Checked inductivity of 7675 backedges. 644 proven. 245 refuted. 0 times theorem prover too weak. 6786 trivial. 0 not checked. [2023-08-24 04:30:54,651 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 04:30:54,865 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2175 Int) (v_ArrVal_2171 Int) (v_ArrVal_2173 (Array Int Int))) (or (< (+ |c_t1Thread1of1ForFork0_enqueue_#t~mem40#1| 1) v_ArrVal_2171) (not (= (let ((.cse1 (+ |c_~#queue~0.offset| 3204))) (select (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|) (+ 3204 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) v_ArrVal_2171)) |c_~#stored_elements~0.base| v_ArrVal_2173) |c_~#queue~0.base|))) (store .cse0 (+ |c_~#queue~0.offset| (* (select .cse0 .cse1) 4)) v_ArrVal_2175)) .cse1)) 800)))) is different from false [2023-08-24 04:30:54,877 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2175 Int) (v_ArrVal_2171 Int) (v_ArrVal_2173 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|)) (.cse1 (+ 3204 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|))) (or (< (+ (select .cse0 .cse1) 1) v_ArrVal_2171) (not (= (let ((.cse3 (+ |c_~#queue~0.offset| 3204))) (select (let ((.cse2 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store .cse0 .cse1 v_ArrVal_2171)) |c_~#stored_elements~0.base| v_ArrVal_2173) |c_~#queue~0.base|))) (store .cse2 (+ |c_~#queue~0.offset| (* (select .cse2 .cse3) 4)) v_ArrVal_2175)) .cse3)) 800))))) is different from false [2023-08-24 04:30:54,892 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2175 Int) (v_ArrVal_2169 Int) (v_ArrVal_2171 Int) (v_ArrVal_2173 (Array Int Int))) (let ((.cse2 (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|)) (.cse3 (+ 3204 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|))) (or (not (= (let ((.cse1 (+ |c_~#queue~0.offset| 3204))) (select (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store (store .cse2 (+ 3208 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) v_ArrVal_2169) .cse3 v_ArrVal_2171)) |c_~#stored_elements~0.base| v_ArrVal_2173) |c_~#queue~0.base|))) (store .cse0 (+ (* (select .cse0 .cse1) 4) |c_~#queue~0.offset|) v_ArrVal_2175)) .cse1)) 800)) (< (+ (select .cse2 .cse3) 1) v_ArrVal_2171)))) is different from false [2023-08-24 04:30:54,916 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2175 Int) (v_ArrVal_2167 Int) (v_ArrVal_2169 Int) (v_ArrVal_2171 Int) (v_ArrVal_2173 (Array Int Int))) (let ((.cse0 (store (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|) (+ (* |c_t1Thread1of1ForFork0_enqueue_#t~mem36#1| 4) |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) v_ArrVal_2167)) (.cse1 (+ 3204 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|))) (or (< (+ (select .cse0 .cse1) 1) v_ArrVal_2171) (not (= 800 (let ((.cse3 (+ |c_~#queue~0.offset| 3204))) (select (let ((.cse2 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store (store .cse0 (+ 3208 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) v_ArrVal_2169) .cse1 v_ArrVal_2171)) |c_~#stored_elements~0.base| v_ArrVal_2173) |c_~#queue~0.base|))) (store .cse2 (+ (* (select .cse2 .cse3) 4) |c_~#queue~0.offset|) v_ArrVal_2175)) .cse3))))))) is different from false [2023-08-24 04:30:59,180 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 04:30:59,181 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 179 treesize of output 129 [2023-08-24 04:30:59,192 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 04:30:59,192 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 212 treesize of output 212 [2023-08-24 04:30:59,202 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 72 treesize of output 60 [2023-08-24 04:30:59,211 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 40 treesize of output 32 [2023-08-24 04:30:59,232 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 7 treesize of output 3 [2023-08-24 04:30:59,252 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 04:30:59,252 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 71 [2023-08-24 04:31:01,824 INFO L134 CoverageAnalysis]: Checked inductivity of 7675 backedges. 356 proven. 241 refuted. 48 times theorem prover too weak. 6786 trivial. 244 not checked. [2023-08-24 04:31:01,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16771009] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 04:31:01,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 04:31:01,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 11, 13] total 75 [2023-08-24 04:31:01,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688253230] [2023-08-24 04:31:01,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 04:31:01,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2023-08-24 04:31:01,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:31:01,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2023-08-24 04:31:01,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1497, Invalid=3475, Unknown=14, NotChecked=564, Total=5550 [2023-08-24 04:31:01,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 402 [2023-08-24 04:31:01,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 281 transitions, 3410 flow. Second operand has 75 states, 75 states have (on average 155.26666666666668) internal successors, (11645), 75 states have internal predecessors, (11645), 0 states have call successors, (0), 0 states 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 04:31:01,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:31:01,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 402 [2023-08-24 04:31:01,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:32:23,124 INFO L124 PetriNetUnfolderBase]: 5789/13244 cut-off events. [2023-08-24 04:32:23,125 INFO L125 PetriNetUnfolderBase]: For 195510/195510 co-relation queries the response was YES. [2023-08-24 04:32:23,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67354 conditions, 13244 events. 5789/13244 cut-off events. For 195510/195510 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 61762 event pairs, 213 based on Foata normal form. 408/13616 useless extension candidates. Maximal degree in co-relation 67271. Up to 2163 conditions per place. [2023-08-24 04:32:23,243 INFO L140 encePairwiseOnDemand]: 386/402 looper letters, 1958 selfloop transitions, 1567 changer transitions 1/3528 dead transitions. [2023-08-24 04:32:23,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 749 places, 3528 transitions, 35161 flow [2023-08-24 04:32:23,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 521 states. [2023-08-24 04:32:23,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 521 states. [2023-08-24 04:32:23,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 81260 transitions. [2023-08-24 04:32:23,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3879833080279982 [2023-08-24 04:32:23,320 INFO L72 ComplementDD]: Start complementDD. Operand 521 states and 81260 transitions. [2023-08-24 04:32:23,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 521 states and 81260 transitions. [2023-08-24 04:32:23,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:32:23,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 521 states and 81260 transitions. [2023-08-24 04:32:23,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 522 states, 521 states have (on average 155.96928982725527) internal successors, (81260), 521 states have internal predecessors, (81260), 0 states have call successors, (0), 0 states 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 04:32:23,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 522 states, 522 states have (on average 402.0) internal successors, (209844), 522 states have internal predecessors, (209844), 0 states have call successors, (0), 0 states 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 04:32:23,661 INFO L81 ComplementDD]: Finished complementDD. Result has 522 states, 522 states have (on average 402.0) internal successors, (209844), 522 states have internal predecessors, (209844), 0 states have call successors, (0), 0 states 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 04:32:23,661 INFO L175 Difference]: Start difference. First operand has 229 places, 281 transitions, 3410 flow. Second operand 521 states and 81260 transitions. [2023-08-24 04:32:23,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 749 places, 3528 transitions, 35161 flow [2023-08-24 04:32:24,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 726 places, 3528 transitions, 34942 flow, removed 0 selfloop flow, removed 23 redundant places. [2023-08-24 04:32:24,145 INFO L231 Difference]: Finished difference. Result has 982 places, 1808 transitions, 28624 flow [2023-08-24 04:32:24,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=3242, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=521, PETRI_FLOW=28624, PETRI_PLACES=982, PETRI_TRANSITIONS=1808} [2023-08-24 04:32:24,146 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 935 predicate places. [2023-08-24 04:32:24,146 INFO L495 AbstractCegarLoop]: Abstraction has has 982 places, 1808 transitions, 28624 flow [2023-08-24 04:32:24,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 155.26666666666668) internal successors, (11645), 75 states have internal predecessors, (11645), 0 states have call successors, (0), 0 states 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 04:32:24,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:32:24,149 INFO L208 CegarLoopForPetriNet]: trace histogram [51, 51, 51, 51, 38, 38, 38, 38, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:32:24,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-24 04:32:24,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 04:32:24,357 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 04:32:24,357 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:32:24,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1940408699, now seen corresponding path program 4 times [2023-08-24 04:32:24,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:32:24,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702301213] [2023-08-24 04:32:24,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:32:24,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:32:24,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:32:28,004 INFO L134 CoverageAnalysis]: Checked inductivity of 8691 backedges. 0 proven. 8691 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:32:28,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:32:28,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702301213] [2023-08-24 04:32:28,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702301213] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 04:32:28,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865815673] [2023-08-24 04:32:28,004 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 04:32:28,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 04:32:28,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 04:32:28,005 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 04:32:28,007 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 04:34:24,914 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 04:34:24,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 04:34:24,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 2682 conjuncts, 53 conjunts are in the unsatisfiable core [2023-08-24 04:34:24,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 04:34:25,371 INFO L134 CoverageAnalysis]: Checked inductivity of 8691 backedges. 0 proven. 8691 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:34:25,371 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 04:34:28,618 INFO L134 CoverageAnalysis]: Checked inductivity of 8691 backedges. 0 proven. 8691 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:34:28,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865815673] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 04:34:28,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 04:34:28,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 107 [2023-08-24 04:34:28,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114919544] [2023-08-24 04:34:28,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 04:34:28,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2023-08-24 04:34:28,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:34:28,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2023-08-24 04:34:28,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2023-08-24 04:34:28,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 402 [2023-08-24 04:34:28,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 982 places, 1808 transitions, 28624 flow. Second operand has 107 states, 107 states have (on average 204.69158878504672) internal successors, (21902), 107 states have internal predecessors, (21902), 0 states have call successors, (0), 0 states 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 04:34:28,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:34:28,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 402 [2023-08-24 04:34:28,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:35:13,121 INFO L124 PetriNetUnfolderBase]: 10300/25207 cut-off events. [2023-08-24 04:35:13,122 INFO L125 PetriNetUnfolderBase]: For 19689145/19689145 co-relation queries the response was YES. [2023-08-24 04:35:13,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 700705 conditions, 25207 events. 10300/25207 cut-off events. For 19689145/19689145 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 121941 event pairs, 393 based on Foata normal form. 848/26019 useless extension candidates. Maximal degree in co-relation 700365. Up to 6939 conditions per place. [2023-08-24 04:35:14,128 INFO L140 encePairwiseOnDemand]: 397/402 looper letters, 3731 selfloop transitions, 522 changer transitions 0/4256 dead transitions. [2023-08-24 04:35:14,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1087 places, 4256 transitions, 144092 flow [2023-08-24 04:35:14,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2023-08-24 04:35:14,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2023-08-24 04:35:14,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 22421 transitions. [2023-08-24 04:35:14,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5261663381207171 [2023-08-24 04:35:14,146 INFO L72 ComplementDD]: Start complementDD. Operand 106 states and 22421 transitions. [2023-08-24 04:35:14,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 106 states and 22421 transitions. [2023-08-24 04:35:14,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:35:14,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 106 states and 22421 transitions. [2023-08-24 04:35:14,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 107 states, 106 states have (on average 211.5188679245283) internal successors, (22421), 106 states have internal predecessors, (22421), 0 states have call successors, (0), 0 states 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 04:35:14,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 107 states, 107 states have (on average 402.0) internal successors, (43014), 107 states have internal predecessors, (43014), 0 states have call successors, (0), 0 states 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 04:35:14,208 INFO L81 ComplementDD]: Finished complementDD. Result has 107 states, 107 states have (on average 402.0) internal successors, (43014), 107 states have internal predecessors, (43014), 0 states have call successors, (0), 0 states 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 04:35:14,208 INFO L175 Difference]: Start difference. First operand has 982 places, 1808 transitions, 28624 flow. Second operand 106 states and 22421 transitions. [2023-08-24 04:35:14,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1087 places, 4256 transitions, 144092 flow [2023-08-24 04:35:37,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 996 places, 4256 transitions, 119310 flow, removed 10235 selfloop flow, removed 91 redundant places. [2023-08-24 04:35:37,124 INFO L231 Difference]: Finished difference. Result has 1050 places, 2072 transitions, 22080 flow [2023-08-24 04:35:37,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=16141, PETRI_DIFFERENCE_MINUEND_PLACES=891, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1808, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1546, PETRI_DIFFERENCE_SUBTRAHEND_STATES=106, PETRI_FLOW=22080, PETRI_PLACES=1050, PETRI_TRANSITIONS=2072} [2023-08-24 04:35:37,126 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 1003 predicate places. [2023-08-24 04:35:37,126 INFO L495 AbstractCegarLoop]: Abstraction has has 1050 places, 2072 transitions, 22080 flow [2023-08-24 04:35:37,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 204.69158878504672) internal successors, (21902), 107 states have internal predecessors, (21902), 0 states have call successors, (0), 0 states 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 04:35:37,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:35:37,130 INFO L208 CegarLoopForPetriNet]: trace histogram [104, 104, 104, 104, 77, 77, 77, 77, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:35:37,149 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 04:35:37,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 04:35:37,331 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 04:35:37,331 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:35:37,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1009204112, now seen corresponding path program 5 times [2023-08-24 04:35:37,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:35:37,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814131791] [2023-08-24 04:35:37,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:35:37,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:35:37,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:35:48,992 INFO L134 CoverageAnalysis]: Checked inductivity of 36364 backedges. 0 proven. 36364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:35:48,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:35:48,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814131791] [2023-08-24 04:35:48,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814131791] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 04:35:48,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636088034] [2023-08-24 04:35:48,993 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 04:35:48,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 04:35:48,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 04:35:48,996 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 04:35:48,998 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 04:35:51,484 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-08-24 04:35:51,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 04:35:51,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 197 conjunts are in the unsatisfiable core [2023-08-24 04:35:51,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 04:35:51,580 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 13 treesize of output 9 [2023-08-24 04:35:51,650 INFO L322 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2023-08-24 04:35:51,650 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 1 case distinctions, treesize of input 25 treesize of output 38 [2023-08-24 04:35:51,884 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 04:35:51,896 INFO L322 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2023-08-24 04:35:51,897 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 62 [2023-08-24 04:35:52,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 04:35:52,046 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 48 treesize of output 47 [2023-08-24 04:35:52,184 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 59 treesize of output 43 [2023-08-24 04:35:52,292 INFO L322 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2023-08-24 04:35:52,293 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 1 case distinctions, treesize of input 50 treesize of output 63 [2023-08-24 04:35:52,519 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 04:35:52,529 INFO L322 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2023-08-24 04:35:52,529 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 62 [2023-08-24 04:35:52,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 04:35:52,683 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 48 treesize of output 47 [2023-08-24 04:35:52,928 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 69 treesize of output 47 [2023-08-24 04:35:53,029 INFO L322 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2023-08-24 04:35:53,029 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 1 case distinctions, treesize of input 50 treesize of output 63 [2023-08-24 04:35:53,168 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 04:35:53,178 INFO L322 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2023-08-24 04:35:53,178 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 62 [2023-08-24 04:35:53,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 04:35:53,328 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 48 treesize of output 47 [2023-08-24 04:35:53,560 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 69 treesize of output 47 [2023-08-24 04:35:53,660 INFO L322 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2023-08-24 04:35:53,661 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 1 case distinctions, treesize of input 50 treesize of output 63 [2023-08-24 04:35:53,875 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 04:35:53,885 INFO L322 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2023-08-24 04:35:53,886 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 62 [2023-08-24 04:35:54,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 04:35:54,018 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 48 treesize of output 47 [2023-08-24 04:35:54,137 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 23 treesize of output 13 [2023-08-24 04:35:54,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 04:35:54,220 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 25 treesize of output 24 [2023-08-24 04:35:54,415 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 04:35:54,422 INFO L322 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2023-08-24 04:35:54,422 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2023-08-24 04:35:54,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 04:35:54,534 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 23 treesize of output 22 [2023-08-24 04:35:54,667 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 23 treesize of output 13 [2023-08-24 04:35:54,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 04:35:54,750 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 25 treesize of output 24 [2023-08-24 04:35:54,959 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 04:35:54,966 INFO L322 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2023-08-24 04:35:54,966 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2023-08-24 04:35:55,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 04:35:55,100 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 23 treesize of output 22 [2023-08-24 04:35:55,278 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 23 treesize of output 13 [2023-08-24 04:35:55,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 04:35:55,367 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 25 treesize of output 24 [2023-08-24 04:35:55,574 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 04:35:55,582 INFO L322 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2023-08-24 04:35:55,582 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2023-08-24 04:35:55,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 04:35:55,705 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 23 treesize of output 22 [2023-08-24 04:35:55,843 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 34 treesize of output 18 [2023-08-24 04:35:55,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 04:35:55,950 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 30 treesize of output 29 [2023-08-24 04:35:56,118 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 04:35:56,127 INFO L322 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2023-08-24 04:35:56,127 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2023-08-24 04:35:56,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 04:35:56,225 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 23 treesize of output 22 [2023-08-24 04:35:56,244 INFO L134 CoverageAnalysis]: Checked inductivity of 36364 backedges. 12060 proven. 93 refuted. 0 times theorem prover too weak. 24211 trivial. 0 not checked. [2023-08-24 04:35:56,245 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-08-24 04:44:16,811 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 04:44:16,811 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 04:44:17,217 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-08-24 04:44:17,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-24 04:44:17,418 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,SelfDestructingSolverStorable11 [2023-08-24 04:44:17,418 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 826 with TraceHistMax 104,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 167 known predicates. [2023-08-24 04:44:17,420 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-24 04:44:17,420 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-08-24 04:44:17,420 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-24 04:44:17,420 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-08-24 04:44:17,421 INFO L445 BasicCegarLoop]: Path program histogram: [5, 3, 1, 1, 1, 1] [2023-08-24 04:44:17,424 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 04:44:17,424 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 04:44:17,426 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 04:44:17 BasicIcfg [2023-08-24 04:44:17,426 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 04:44:17,427 INFO L158 Benchmark]: Toolchain (without parser) took 833711.75ms. Allocated memory was 364.9MB in the beginning and 6.9GB in the end (delta: 6.5GB). Free memory was 340.1MB in the beginning and 1.5GB in the end (delta: -1.2GB). Peak memory consumption was 5.3GB. Max. memory is 16.0GB. [2023-08-24 04:44:17,427 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 364.9MB. Free memory is still 342.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 04:44:17,427 INFO L158 Benchmark]: CACSL2BoogieTranslator took 664.26ms. Allocated memory is still 364.9MB. Free memory was 340.1MB in the beginning and 310.2MB in the end (delta: 29.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-08-24 04:44:17,427 INFO L158 Benchmark]: Boogie Procedure Inliner took 82.73ms. Allocated memory is still 364.9MB. Free memory was 309.7MB in the beginning and 307.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 04:44:17,427 INFO L158 Benchmark]: Boogie Preprocessor took 39.17ms. Allocated memory is still 364.9MB. Free memory was 307.1MB in the beginning and 305.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 04:44:17,428 INFO L158 Benchmark]: RCFGBuilder took 586.16ms. Allocated memory is still 364.9MB. Free memory was 305.0MB in the beginning and 333.3MB in the end (delta: -28.3MB). Peak memory consumption was 19.0MB. Max. memory is 16.0GB. [2023-08-24 04:44:17,428 INFO L158 Benchmark]: TraceAbstraction took 832333.89ms. Allocated memory was 364.9MB in the beginning and 6.9GB in the end (delta: 6.5GB). Free memory was 333.3MB in the beginning and 1.5GB in the end (delta: -1.2GB). Peak memory consumption was 5.3GB. Max. memory is 16.0GB. [2023-08-24 04:44:17,429 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 364.9MB. Free memory is still 342.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 664.26ms. Allocated memory is still 364.9MB. Free memory was 340.1MB in the beginning and 310.2MB in the end (delta: 29.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 82.73ms. Allocated memory is still 364.9MB. Free memory was 309.7MB in the beginning and 307.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 39.17ms. Allocated memory is still 364.9MB. Free memory was 307.1MB in the beginning and 305.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 586.16ms. Allocated memory is still 364.9MB. Free memory was 305.0MB in the beginning and 333.3MB in the end (delta: -28.3MB). Peak memory consumption was 19.0MB. Max. memory is 16.0GB. * TraceAbstraction took 832333.89ms. Allocated memory was 364.9MB in the beginning and 6.9GB in the end (delta: 6.5GB). Free memory was 333.3MB in the beginning and 1.5GB in the end (delta: -1.2GB). Peak memory consumption was 5.3GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 258]: Unsoundness Warning unspecified type, defaulting to int C: short [258] - GenericResultAtLocation [Line: 258]: Unsoundness Warning unspecified type, defaulting to int C: short [258] - GenericResultAtLocation [Line: 750]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [750] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.2s, 199 PlacesBefore, 47 PlacesAfterwards, 205 TransitionsBefore, 47 TransitionsAfterwards, 9984 CoEnabledTransitionPairs, 7 FixpointIterations, 58 TrivialSequentialCompositions, 99 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 16 ConcurrentYvCompositions, 6 ChoiceCompositions, 186 TotalNumberOfCompositions, 19772 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9519, independent: 9080, independent conditional: 0, independent unconditional: 9080, dependent: 439, dependent conditional: 0, dependent unconditional: 439, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5401, independent: 5319, independent conditional: 0, independent unconditional: 5319, dependent: 82, dependent conditional: 0, dependent unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 9519, independent: 3761, independent conditional: 0, independent unconditional: 3761, dependent: 357, dependent conditional: 0, dependent unconditional: 357, unknown: 5401, unknown conditional: 0, unknown unconditional: 5401] , Statistics on independence cache: Total cache size (in pairs): 268, Positive cache size: 233, Positive conditional cache size: 0, Positive unconditional cache size: 233, Negative cache size: 35, Negative conditional cache size: 0, Negative unconditional cache size: 35, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 1033]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 826 with TraceHistMax 104,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 167 known predicates. - TimeoutResultAtElement [Line: 1049]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 826 with TraceHistMax 104,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 167 known predicates. - TimeoutResultAtElement [Line: 1052]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 826 with TraceHistMax 104,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 167 known predicates. - TimeoutResultAtElement [Line: 1053]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 826 with TraceHistMax 104,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 167 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 327 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 832.1s, OverallIterations: 12, TraceHistogramMax: 104, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 157.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10231 SdHoareTripleChecker+Valid, 6.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10231 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 5.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 13852 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1613 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5671 IncrementalHoareTripleChecker+Invalid, 21136 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1613 mSolverCounterUnsat, 1 mSDtfsCounter, 5671 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4214 GetRequests, 2943 SyntacticMatches, 422 SemanticMatches, 849 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 293948 ImplicationChecksByTransitivity, 83.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28624occurred in iteration=10, InterpolantAutomatonStates: 777, 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: 0.5s SsaConstructionTime, 119.0s SatisfiabilityAnalysisTime, 24.9s InterpolantComputationTime, 2615 NumberOfCodeBlocks, 2221 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 3867 ConstructedInterpolants, 14 QuantifiedInterpolants, 14444 SizeOfPredicates, 23 NumberOfNonLiveVariables, 6392 ConjunctsInSsa, 207 ConjunctsInUnsatCore, 25 InterpolantComputations, 4 PerfectInterpolantSequences, 15125/56455 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