/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 16:04:30,602 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 16:04:30,651 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 16:04:30,655 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 16:04:30,656 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 16:04:30,656 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 16:04:30,656 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 16:04:30,675 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 16:04:30,675 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 16:04:30,676 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 16:04:30,676 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 16:04:30,677 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 16:04:30,677 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 16:04:30,677 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 16:04:30,678 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 16:04:30,678 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 16:04:30,678 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 16:04:30,679 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 16:04:30,679 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 16:04:30,679 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 16:04:30,680 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 16:04:30,680 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 16:04:30,680 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 16:04:30,681 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 16:04:30,681 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 16:04:30,681 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 16:04:30,682 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 16:04:30,682 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 16:04:30,682 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 16:04:30,683 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 16:04:30,683 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:04:30,683 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 16:04:30,683 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 16:04:30,684 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 16:04:30,684 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 16:04:30,684 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 16:04:30,685 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 16:04:30,685 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 16:04:30,685 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 16:04:30,686 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 16:04:30,686 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 16:04:30,686 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 16:04:30,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 16:04:30,865 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 16:04:30,867 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 16:04:30,868 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 16:04:30,868 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 16:04:30,869 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow_bound2.i [2023-08-03 16:04:32,033 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 16:04:32,271 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 16:04:32,271 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow_bound2.i [2023-08-03 16:04:32,283 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/670340c9a/694ac5be9d854d51a5939d977b081b1b/FLAG89797a1ca [2023-08-03 16:04:32,299 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/670340c9a/694ac5be9d854d51a5939d977b081b1b [2023-08-03 16:04:32,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 16:04:32,307 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 16:04:32,312 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 16:04:32,312 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 16:04:32,317 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 16:04:32,318 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:04:32" (1/1) ... [2023-08-03 16:04:32,319 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@222c1a91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:32, skipping insertion in model container [2023-08-03 16:04:32,319 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:04:32" (1/1) ... [2023-08-03 16:04:32,365 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 16:04:32,480 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow_bound2.i[1120,1133] [2023-08-03 16:04:32,599 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:04:32,610 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 16:04:32,620 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow_bound2.i[1120,1133] [2023-08-03 16:04:32,627 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [236] [2023-08-03 16:04:32,629 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [237] [2023-08-03 16:04:32,646 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:04:32,676 INFO L206 MainTranslator]: Completed translation [2023-08-03 16:04:32,677 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:32 WrapperNode [2023-08-03 16:04:32,677 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 16:04:32,678 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 16:04:32,678 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 16:04:32,678 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 16:04:32,684 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:32" (1/1) ... [2023-08-03 16:04:32,694 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:32" (1/1) ... [2023-08-03 16:04:32,715 INFO L138 Inliner]: procedures = 165, calls = 42, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 151 [2023-08-03 16:04:32,716 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 16:04:32,717 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 16:04:32,717 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 16:04:32,717 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 16:04:32,725 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:32" (1/1) ... [2023-08-03 16:04:32,725 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:32" (1/1) ... [2023-08-03 16:04:32,728 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:32" (1/1) ... [2023-08-03 16:04:32,730 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:32" (1/1) ... [2023-08-03 16:04:32,738 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:32" (1/1) ... [2023-08-03 16:04:32,741 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:32" (1/1) ... [2023-08-03 16:04:32,743 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:32" (1/1) ... [2023-08-03 16:04:32,744 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:32" (1/1) ... [2023-08-03 16:04:32,747 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 16:04:32,748 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 16:04:32,748 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 16:04:32,748 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 16:04:32,749 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:32" (1/1) ... [2023-08-03 16:04:32,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:04:32,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:04:32,781 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 16:04:32,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 16:04:32,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 16:04:32,805 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 16:04:32,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 16:04:32,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 16:04:32,805 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-03 16:04:32,805 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-03 16:04:32,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 16:04:32,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 16:04:32,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 16:04:32,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 16:04:32,807 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 16:04:32,908 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 16:04:32,910 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 16:04:33,177 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 16:04:33,193 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 16:04:33,193 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-03 16:04:33,195 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:04:33 BoogieIcfgContainer [2023-08-03 16:04:33,195 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 16:04:33,197 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 16:04:33,197 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 16:04:33,200 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 16:04:33,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 04:04:32" (1/3) ... [2023-08-03 16:04:33,201 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@221373de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:04:33, skipping insertion in model container [2023-08-03 16:04:33,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:32" (2/3) ... [2023-08-03 16:04:33,201 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@221373de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:04:33, skipping insertion in model container [2023-08-03 16:04:33,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:04:33" (3/3) ... [2023-08-03 16:04:33,202 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow_bound2.i [2023-08-03 16:04:33,212 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 16:04:33,221 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 16:04:33,222 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-03 16:04:33,223 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 16:04:33,315 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 16:04:33,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 173 transitions, 351 flow [2023-08-03 16:04:33,426 INFO L124 PetriNetUnfolderBase]: 13/222 cut-off events. [2023-08-03 16:04:33,426 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:04:33,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 222 events. 13/222 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 356 event pairs, 0 based on Foata normal form. 0/204 useless extension candidates. Maximal degree in co-relation 130. Up to 4 conditions per place. [2023-08-03 16:04:33,439 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 173 transitions, 351 flow [2023-08-03 16:04:33,443 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 172 transitions, 349 flow [2023-08-03 16:04:33,446 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:04:33,453 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 172 transitions, 349 flow [2023-08-03 16:04:33,456 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 172 transitions, 349 flow [2023-08-03 16:04:33,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 172 transitions, 349 flow [2023-08-03 16:04:33,492 INFO L124 PetriNetUnfolderBase]: 12/221 cut-off events. [2023-08-03 16:04:33,492 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:04:33,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 221 events. 12/221 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 364 event pairs, 0 based on Foata normal form. 0/204 useless extension candidates. Maximal degree in co-relation 130. Up to 4 conditions per place. [2023-08-03 16:04:33,499 INFO L119 LiptonReduction]: Number of co-enabled transitions 8360 [2023-08-03 16:04:37,941 INFO L134 LiptonReduction]: Checked pairs total: 12840 [2023-08-03 16:04:37,941 INFO L136 LiptonReduction]: Total number of compositions: 176 [2023-08-03 16:04:37,953 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:04:37,958 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4041a825, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:04:37,958 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-03 16:04:37,962 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:04:37,962 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-08-03 16:04:37,962 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:04:37,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:37,963 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 16:04:37,963 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-03 16:04:37,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:37,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1449286438, now seen corresponding path program 1 times [2023-08-03 16:04:37,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:37,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794495629] [2023-08-03 16:04:37,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:37,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:38,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:04:38,082 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 16:04:38,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:04:38,123 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 16:04:38,125 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 16:04:38,126 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-08-03 16:04:38,127 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-08-03 16:04:38,128 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-08-03 16:04:38,128 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2023-08-03 16:04:38,128 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2023-08-03 16:04:38,128 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-08-03 16:04:38,129 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-08-03 16:04:38,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 16:04:38,129 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 16:04:38,132 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 16:04:38,132 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 16:04:38,159 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 16:04:38,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 239 places, 250 transitions, 512 flow [2023-08-03 16:04:38,219 INFO L124 PetriNetUnfolderBase]: 22/353 cut-off events. [2023-08-03 16:04:38,219 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 16:04:38,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 363 conditions, 353 events. 22/353 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 995 event pairs, 0 based on Foata normal form. 0/322 useless extension candidates. Maximal degree in co-relation 223. Up to 6 conditions per place. [2023-08-03 16:04:38,224 INFO L82 GeneralOperation]: Start removeDead. Operand has 239 places, 250 transitions, 512 flow [2023-08-03 16:04:38,227 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 239 places, 249 transitions, 510 flow [2023-08-03 16:04:38,227 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:04:38,227 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 239 places, 249 transitions, 510 flow [2023-08-03 16:04:38,227 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 239 places, 249 transitions, 510 flow [2023-08-03 16:04:38,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 239 places, 249 transitions, 510 flow [2023-08-03 16:04:38,271 INFO L124 PetriNetUnfolderBase]: 21/352 cut-off events. [2023-08-03 16:04:38,271 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 16:04:38,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 352 events. 21/352 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1011 event pairs, 0 based on Foata normal form. 0/322 useless extension candidates. Maximal degree in co-relation 222. Up to 6 conditions per place. [2023-08-03 16:04:38,291 INFO L119 LiptonReduction]: Number of co-enabled transitions 28424 [2023-08-03 16:04:43,873 INFO L134 LiptonReduction]: Checked pairs total: 44145 [2023-08-03 16:04:43,874 INFO L136 LiptonReduction]: Total number of compositions: 270 [2023-08-03 16:04:43,876 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:04:43,877 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4041a825, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:04:43,877 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-08-03 16:04:43,881 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:04:43,881 INFO L124 PetriNetUnfolderBase]: 1/23 cut-off events. [2023-08-03 16:04:43,881 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 16:04:43,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:43,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:43,881 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-08-03 16:04:43,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:43,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1027043068, now seen corresponding path program 1 times [2023-08-03 16:04:43,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:43,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461796476] [2023-08-03 16:04:43,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:43,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:43,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:44,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:04:44,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:44,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461796476] [2023-08-03 16:04:44,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461796476] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:04:44,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:04:44,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:04:44,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366485210] [2023-08-03 16:04:44,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:04:44,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 16:04:44,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:44,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 16:04:44,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 16:04:44,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 520 [2023-08-03 16:04:44,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 52 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 223.75) internal successors, (895), 4 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:44,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:44,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 520 [2023-08-03 16:04:44,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:44,965 INFO L124 PetriNetUnfolderBase]: 4541/7250 cut-off events. [2023-08-03 16:04:44,965 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-08-03 16:04:44,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14350 conditions, 7250 events. 4541/7250 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 43887 event pairs, 1239 based on Foata normal form. 0/5665 useless extension candidates. Maximal degree in co-relation 10680. Up to 4026 conditions per place. [2023-08-03 16:04:45,016 INFO L140 encePairwiseOnDemand]: 513/520 looper letters, 104 selfloop transitions, 5 changer transitions 0/116 dead transitions. [2023-08-03 16:04:45,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 116 transitions, 467 flow [2023-08-03 16:04:45,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 16:04:45,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 16:04:45,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1227 transitions. [2023-08-03 16:04:45,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47192307692307695 [2023-08-03 16:04:45,097 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1227 transitions. [2023-08-03 16:04:45,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1227 transitions. [2023-08-03 16:04:45,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:45,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1227 transitions. [2023-08-03 16:04:45,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 245.4) internal successors, (1227), 5 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:45,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 520.0) internal successors, (3120), 6 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:45,120 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 520.0) internal successors, (3120), 6 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:45,121 INFO L175 Difference]: Start difference. First operand has 53 places, 52 transitions, 116 flow. Second operand 5 states and 1227 transitions. [2023-08-03 16:04:45,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 116 transitions, 467 flow [2023-08-03 16:04:45,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 116 transitions, 465 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-03 16:04:45,129 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 137 flow [2023-08-03 16:04:45,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=520, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=137, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2023-08-03 16:04:45,138 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 5 predicate places. [2023-08-03 16:04:45,139 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 137 flow [2023-08-03 16:04:45,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 223.75) internal successors, (895), 4 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:45,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:45,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:45,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 16:04:45,143 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-08-03 16:04:45,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:45,148 INFO L85 PathProgramCache]: Analyzing trace with hash 854078356, now seen corresponding path program 1 times [2023-08-03 16:04:45,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:45,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185589194] [2023-08-03 16:04:45,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:45,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:45,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:45,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:04:45,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:45,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185589194] [2023-08-03 16:04:45,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185589194] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:04:45,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:04:45,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 16:04:45,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536133563] [2023-08-03 16:04:45,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:04:45,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 16:04:45,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:45,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 16:04:45,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-03 16:04:45,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 520 [2023-08-03 16:04:45,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 137 flow. Second operand has 6 states, 6 states have (on average 217.5) internal successors, (1305), 6 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:45,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:45,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 520 [2023-08-03 16:04:45,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:46,397 INFO L124 PetriNetUnfolderBase]: 5555/9286 cut-off events. [2023-08-03 16:04:46,397 INFO L125 PetriNetUnfolderBase]: For 994/994 co-relation queries the response was YES. [2023-08-03 16:04:46,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19347 conditions, 9286 events. 5555/9286 cut-off events. For 994/994 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 60830 event pairs, 987 based on Foata normal form. 0/7617 useless extension candidates. Maximal degree in co-relation 15297. Up to 2983 conditions per place. [2023-08-03 16:04:46,461 INFO L140 encePairwiseOnDemand]: 510/520 looper letters, 211 selfloop transitions, 24 changer transitions 0/242 dead transitions. [2023-08-03 16:04:46,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 242 transitions, 1020 flow [2023-08-03 16:04:46,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-03 16:04:46,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-03 16:04:46,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2830 transitions. [2023-08-03 16:04:46,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453525641025641 [2023-08-03 16:04:46,468 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2830 transitions. [2023-08-03 16:04:46,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2830 transitions. [2023-08-03 16:04:46,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:46,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2830 transitions. [2023-08-03 16:04:46,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 235.83333333333334) internal successors, (2830), 12 states have internal predecessors, (2830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:46,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 520.0) internal successors, (6760), 13 states have internal predecessors, (6760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:46,488 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 520.0) internal successors, (6760), 13 states have internal predecessors, (6760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:46,488 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 137 flow. Second operand 12 states and 2830 transitions. [2023-08-03 16:04:46,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 242 transitions, 1020 flow [2023-08-03 16:04:46,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 242 transitions, 1015 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:04:46,508 INFO L231 Difference]: Finished difference. Result has 72 places, 67 transitions, 258 flow [2023-08-03 16:04:46,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=520, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=258, PETRI_PLACES=72, PETRI_TRANSITIONS=67} [2023-08-03 16:04:46,509 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 19 predicate places. [2023-08-03 16:04:46,510 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 67 transitions, 258 flow [2023-08-03 16:04:46,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 217.5) internal successors, (1305), 6 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:46,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:46,511 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 16:04:46,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 16:04:46,511 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-08-03 16:04:46,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:46,512 INFO L85 PathProgramCache]: Analyzing trace with hash -797422290, now seen corresponding path program 1 times [2023-08-03 16:04:46,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:46,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061806969] [2023-08-03 16:04:46,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:46,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:46,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:46,603 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:04:46,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:46,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061806969] [2023-08-03 16:04:46,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061806969] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:04:46,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126297076] [2023-08-03 16:04:46,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:46,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:04:46,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:04:46,608 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:04:46,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 16:04:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:46,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 16:04:46,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:04:46,712 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:04:46,712 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 16:04:46,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126297076] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:04:46,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 16:04:46,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 16:04:46,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635232786] [2023-08-03 16:04:46,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:04:46,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:04:46,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:46,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:04:46,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 16:04:46,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 520 [2023-08-03 16:04:46,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 67 transitions, 258 flow. Second operand has 5 states, 5 states have (on average 225.6) internal successors, (1128), 5 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:46,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:46,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 520 [2023-08-03 16:04:46,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:47,426 INFO L124 PetriNetUnfolderBase]: 4584/8263 cut-off events. [2023-08-03 16:04:47,426 INFO L125 PetriNetUnfolderBase]: For 3452/3536 co-relation queries the response was YES. [2023-08-03 16:04:47,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18786 conditions, 8263 events. 4584/8263 cut-off events. For 3452/3536 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 59657 event pairs, 700 based on Foata normal form. 56/7110 useless extension candidates. Maximal degree in co-relation 14437. Up to 6839 conditions per place. [2023-08-03 16:04:47,483 INFO L140 encePairwiseOnDemand]: 516/520 looper letters, 91 selfloop transitions, 4 changer transitions 1/105 dead transitions. [2023-08-03 16:04:47,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 105 transitions, 552 flow [2023-08-03 16:04:47,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 16:04:47,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 16:04:47,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1199 transitions. [2023-08-03 16:04:47,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46115384615384614 [2023-08-03 16:04:47,486 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1199 transitions. [2023-08-03 16:04:47,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1199 transitions. [2023-08-03 16:04:47,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:47,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1199 transitions. [2023-08-03 16:04:47,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 239.8) internal successors, (1199), 5 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:47,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 520.0) internal successors, (3120), 6 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:47,495 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 520.0) internal successors, (3120), 6 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:47,495 INFO L175 Difference]: Start difference. First operand has 72 places, 67 transitions, 258 flow. Second operand 5 states and 1199 transitions. [2023-08-03 16:04:47,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 105 transitions, 552 flow [2023-08-03 16:04:47,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 105 transitions, 538 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-03 16:04:47,556 INFO L231 Difference]: Finished difference. Result has 74 places, 68 transitions, 265 flow [2023-08-03 16:04:47,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=520, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=265, PETRI_PLACES=74, PETRI_TRANSITIONS=68} [2023-08-03 16:04:47,556 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 21 predicate places. [2023-08-03 16:04:47,557 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 68 transitions, 265 flow [2023-08-03 16:04:47,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 225.6) internal successors, (1128), 5 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:47,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:47,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:47,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 16:04:47,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:04:47,763 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-08-03 16:04:47,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:47,764 INFO L85 PathProgramCache]: Analyzing trace with hash 430704140, now seen corresponding path program 1 times [2023-08-03 16:04:47,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:47,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505665478] [2023-08-03 16:04:47,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:47,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:47,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:04:47,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:47,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505665478] [2023-08-03 16:04:47,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505665478] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:04:47,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:04:47,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 16:04:47,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471274697] [2023-08-03 16:04:47,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:04:47,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 16:04:47,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:47,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 16:04:47,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-03 16:04:47,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 520 [2023-08-03 16:04:47,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 68 transitions, 265 flow. Second operand has 6 states, 6 states have (on average 217.83333333333334) internal successors, (1307), 6 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:47,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:47,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 520 [2023-08-03 16:04:47,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:49,226 INFO L124 PetriNetUnfolderBase]: 7058/12400 cut-off events. [2023-08-03 16:04:49,226 INFO L125 PetriNetUnfolderBase]: For 4550/4550 co-relation queries the response was YES. [2023-08-03 16:04:49,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29292 conditions, 12400 events. 7058/12400 cut-off events. For 4550/4550 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 91368 event pairs, 1489 based on Foata normal form. 0/10677 useless extension candidates. Maximal degree in co-relation 24743. Up to 3453 conditions per place. [2023-08-03 16:04:49,320 INFO L140 encePairwiseOnDemand]: 511/520 looper letters, 204 selfloop transitions, 18 changer transitions 0/228 dead transitions. [2023-08-03 16:04:49,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 228 transitions, 1174 flow [2023-08-03 16:04:49,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-03 16:04:49,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-03 16:04:49,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2142 transitions. [2023-08-03 16:04:49,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4576923076923077 [2023-08-03 16:04:49,326 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2142 transitions. [2023-08-03 16:04:49,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2142 transitions. [2023-08-03 16:04:49,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:49,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2142 transitions. [2023-08-03 16:04:49,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 238.0) internal successors, (2142), 9 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:49,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 520.0) internal successors, (5200), 10 states have internal predecessors, (5200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:49,340 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 520.0) internal successors, (5200), 10 states have internal predecessors, (5200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:49,340 INFO L175 Difference]: Start difference. First operand has 74 places, 68 transitions, 265 flow. Second operand 9 states and 2142 transitions. [2023-08-03 16:04:49,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 228 transitions, 1174 flow [2023-08-03 16:04:49,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 228 transitions, 1173 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:04:49,431 INFO L231 Difference]: Finished difference. Result has 84 places, 79 transitions, 377 flow [2023-08-03 16:04:49,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=520, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=377, PETRI_PLACES=84, PETRI_TRANSITIONS=79} [2023-08-03 16:04:49,433 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 31 predicate places. [2023-08-03 16:04:49,433 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 79 transitions, 377 flow [2023-08-03 16:04:49,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 217.83333333333334) internal successors, (1307), 6 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:49,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:49,434 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:49,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 16:04:49,434 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-08-03 16:04:49,434 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:49,434 INFO L85 PathProgramCache]: Analyzing trace with hash -784639289, now seen corresponding path program 1 times [2023-08-03 16:04:49,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:49,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012233795] [2023-08-03 16:04:49,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:49,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:49,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:49,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 16:04:49,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:49,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012233795] [2023-08-03 16:04:49,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012233795] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:04:49,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:04:49,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:04:49,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272037654] [2023-08-03 16:04:49,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:04:49,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 16:04:49,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:49,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 16:04:49,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 16:04:49,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 520 [2023-08-03 16:04:49,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 79 transitions, 377 flow. Second operand has 4 states, 4 states have (on average 224.25) internal successors, (897), 4 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:49,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:49,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 520 [2023-08-03 16:04:49,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:50,782 INFO L124 PetriNetUnfolderBase]: 8449/14196 cut-off events. [2023-08-03 16:04:50,782 INFO L125 PetriNetUnfolderBase]: For 11552/11769 co-relation queries the response was YES. [2023-08-03 16:04:50,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37556 conditions, 14196 events. 8449/14196 cut-off events. For 11552/11769 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 99285 event pairs, 3445 based on Foata normal form. 88/12705 useless extension candidates. Maximal degree in co-relation 27715. Up to 10698 conditions per place. [2023-08-03 16:04:50,900 INFO L140 encePairwiseOnDemand]: 515/520 looper letters, 123 selfloop transitions, 20 changer transitions 0/151 dead transitions. [2023-08-03 16:04:50,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 151 transitions, 967 flow [2023-08-03 16:04:50,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 16:04:50,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 16:04:50,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1215 transitions. [2023-08-03 16:04:50,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4673076923076923 [2023-08-03 16:04:50,905 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1215 transitions. [2023-08-03 16:04:50,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1215 transitions. [2023-08-03 16:04:50,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:50,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1215 transitions. [2023-08-03 16:04:50,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 243.0) internal successors, (1215), 5 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:50,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 520.0) internal successors, (3120), 6 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:50,912 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 520.0) internal successors, (3120), 6 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:50,912 INFO L175 Difference]: Start difference. First operand has 84 places, 79 transitions, 377 flow. Second operand 5 states and 1215 transitions. [2023-08-03 16:04:50,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 151 transitions, 967 flow [2023-08-03 16:04:51,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 151 transitions, 959 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-03 16:04:51,034 INFO L231 Difference]: Finished difference. Result has 90 places, 91 transitions, 545 flow [2023-08-03 16:04:51,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=520, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=545, PETRI_PLACES=90, PETRI_TRANSITIONS=91} [2023-08-03 16:04:51,037 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 37 predicate places. [2023-08-03 16:04:51,038 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 91 transitions, 545 flow [2023-08-03 16:04:51,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 224.25) internal successors, (897), 4 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:51,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:51,038 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:51,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 16:04:51,038 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-08-03 16:04:51,039 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:51,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1875920708, now seen corresponding path program 1 times [2023-08-03 16:04:51,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:51,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412732724] [2023-08-03 16:04:51,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:51,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:51,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 16:04:51,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:51,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412732724] [2023-08-03 16:04:51,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412732724] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:04:51,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:04:51,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 16:04:51,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985918184] [2023-08-03 16:04:51,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:04:51,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:04:51,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:51,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:04:51,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:04:51,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 520 [2023-08-03 16:04:51,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 91 transitions, 545 flow. Second operand has 5 states, 5 states have (on average 221.2) internal successors, (1106), 5 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:51,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:51,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 520 [2023-08-03 16:04:51,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:52,717 INFO L124 PetriNetUnfolderBase]: 11318/19277 cut-off events. [2023-08-03 16:04:52,717 INFO L125 PetriNetUnfolderBase]: For 18614/18785 co-relation queries the response was YES. [2023-08-03 16:04:52,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52313 conditions, 19277 events. 11318/19277 cut-off events. For 18614/18785 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 144417 event pairs, 5032 based on Foata normal form. 84/17792 useless extension candidates. Maximal degree in co-relation 37631. Up to 10455 conditions per place. [2023-08-03 16:04:52,848 INFO L140 encePairwiseOnDemand]: 514/520 looper letters, 185 selfloop transitions, 33 changer transitions 0/226 dead transitions. [2023-08-03 16:04:52,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 226 transitions, 1594 flow [2023-08-03 16:04:52,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-03 16:04:52,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-03 16:04:52,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1910 transitions. [2023-08-03 16:04:52,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45913461538461536 [2023-08-03 16:04:52,853 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1910 transitions. [2023-08-03 16:04:52,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1910 transitions. [2023-08-03 16:04:52,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:52,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1910 transitions. [2023-08-03 16:04:52,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 238.75) internal successors, (1910), 8 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:52,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 520.0) internal successors, (4680), 9 states have internal predecessors, (4680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:52,864 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 520.0) internal successors, (4680), 9 states have internal predecessors, (4680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:52,864 INFO L175 Difference]: Start difference. First operand has 90 places, 91 transitions, 545 flow. Second operand 8 states and 1910 transitions. [2023-08-03 16:04:52,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 226 transitions, 1594 flow [2023-08-03 16:04:53,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 226 transitions, 1578 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:04:53,033 INFO L231 Difference]: Finished difference. Result has 99 places, 104 transitions, 760 flow [2023-08-03 16:04:53,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=520, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=760, PETRI_PLACES=99, PETRI_TRANSITIONS=104} [2023-08-03 16:04:53,035 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 46 predicate places. [2023-08-03 16:04:53,035 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 104 transitions, 760 flow [2023-08-03 16:04:53,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 221.2) internal successors, (1106), 5 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:53,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:53,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:53,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 16:04:53,036 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-08-03 16:04:53,036 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:53,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1887746025, now seen corresponding path program 1 times [2023-08-03 16:04:53,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:53,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221479393] [2023-08-03 16:04:53,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:53,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:53,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:53,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:04:53,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:53,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221479393] [2023-08-03 16:04:53,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221479393] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:04:53,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225936846] [2023-08-03 16:04:53,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:53,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:04:53,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:04:53,090 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:04:53,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 16:04:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:53,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 16:04:53,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:04:53,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:04:53,192 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:04:53,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:04:53,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225936846] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:04:53,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:04:53,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 16:04:53,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460559087] [2023-08-03 16:04:53,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:04:53,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:04:53,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:53,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:04:53,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:04:53,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 520 [2023-08-03 16:04:53,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 104 transitions, 760 flow. Second operand has 5 states, 5 states have (on average 226.8) internal successors, (1134), 5 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:53,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:53,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 520 [2023-08-03 16:04:53,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:54,711 INFO L124 PetriNetUnfolderBase]: 9619/16475 cut-off events. [2023-08-03 16:04:54,712 INFO L125 PetriNetUnfolderBase]: For 19867/20409 co-relation queries the response was YES. [2023-08-03 16:04:54,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46498 conditions, 16475 events. 9619/16475 cut-off events. For 19867/20409 co-relation queries the response was YES. Maximal size of possible extension queue 654. Compared 124743 event pairs, 3969 based on Foata normal form. 99/15290 useless extension candidates. Maximal degree in co-relation 33973. Up to 14895 conditions per place. [2023-08-03 16:04:54,832 INFO L140 encePairwiseOnDemand]: 517/520 looper letters, 123 selfloop transitions, 3 changer transitions 0/137 dead transitions. [2023-08-03 16:04:54,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 137 transitions, 1119 flow [2023-08-03 16:04:54,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:04:54,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:04:54,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 970 transitions. [2023-08-03 16:04:54,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46634615384615385 [2023-08-03 16:04:54,835 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 970 transitions. [2023-08-03 16:04:54,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 970 transitions. [2023-08-03 16:04:54,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:54,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 970 transitions. [2023-08-03 16:04:54,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 242.5) internal successors, (970), 4 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:54,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 520.0) internal successors, (2600), 5 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:54,841 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 520.0) internal successors, (2600), 5 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:54,841 INFO L175 Difference]: Start difference. First operand has 99 places, 104 transitions, 760 flow. Second operand 4 states and 970 transitions. [2023-08-03 16:04:54,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 137 transitions, 1119 flow [2023-08-03 16:04:55,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 137 transitions, 1073 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 16:04:55,003 INFO L231 Difference]: Finished difference. Result has 99 places, 103 transitions, 714 flow [2023-08-03 16:04:55,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=520, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=714, PETRI_PLACES=99, PETRI_TRANSITIONS=103} [2023-08-03 16:04:55,004 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 46 predicate places. [2023-08-03 16:04:55,004 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 103 transitions, 714 flow [2023-08-03 16:04:55,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 226.8) internal successors, (1134), 5 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:55,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:55,005 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:55,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-03 16:04:55,209 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,SelfDestructingSolverStorable7 [2023-08-03 16:04:55,209 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-08-03 16:04:55,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:55,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1126359870, now seen corresponding path program 1 times [2023-08-03 16:04:55,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:55,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281411559] [2023-08-03 16:04:55,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:55,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:55,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 16:04:55,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:55,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281411559] [2023-08-03 16:04:55,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281411559] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:04:55,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:04:55,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 16:04:55,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633583676] [2023-08-03 16:04:55,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:04:55,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 16:04:55,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:55,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 16:04:55,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 16:04:55,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 520 [2023-08-03 16:04:55,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 103 transitions, 714 flow. Second operand has 4 states, 4 states have (on average 222.25) internal successors, (889), 4 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:55,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:55,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 520 [2023-08-03 16:04:55,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:56,992 INFO L124 PetriNetUnfolderBase]: 11168/19114 cut-off events. [2023-08-03 16:04:56,992 INFO L125 PetriNetUnfolderBase]: For 21854/22580 co-relation queries the response was YES. [2023-08-03 16:04:57,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54363 conditions, 19114 events. 11168/19114 cut-off events. For 21854/22580 co-relation queries the response was YES. Maximal size of possible extension queue 766. Compared 147115 event pairs, 4208 based on Foata normal form. 95/18044 useless extension candidates. Maximal degree in co-relation 39806. Up to 7311 conditions per place. [2023-08-03 16:04:57,109 INFO L140 encePairwiseOnDemand]: 514/520 looper letters, 194 selfloop transitions, 9 changer transitions 0/210 dead transitions. [2023-08-03 16:04:57,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 210 transitions, 1816 flow [2023-08-03 16:04:57,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:04:57,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:04:57,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 967 transitions. [2023-08-03 16:04:57,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46490384615384617 [2023-08-03 16:04:57,112 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 967 transitions. [2023-08-03 16:04:57,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 967 transitions. [2023-08-03 16:04:57,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:57,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 967 transitions. [2023-08-03 16:04:57,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 241.75) internal successors, (967), 4 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:57,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 520.0) internal successors, (2600), 5 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:57,118 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 520.0) internal successors, (2600), 5 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:57,118 INFO L175 Difference]: Start difference. First operand has 99 places, 103 transitions, 714 flow. Second operand 4 states and 967 transitions. [2023-08-03 16:04:57,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 210 transitions, 1816 flow [2023-08-03 16:04:57,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 210 transitions, 1806 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 16:04:57,337 INFO L231 Difference]: Finished difference. Result has 100 places, 108 transitions, 768 flow [2023-08-03 16:04:57,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=520, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=768, PETRI_PLACES=100, PETRI_TRANSITIONS=108} [2023-08-03 16:04:57,338 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 47 predicate places. [2023-08-03 16:04:57,338 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 108 transitions, 768 flow [2023-08-03 16:04:57,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 222.25) internal successors, (889), 4 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:57,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:57,339 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:57,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-03 16:04:57,339 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-08-03 16:04:57,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:57,340 INFO L85 PathProgramCache]: Analyzing trace with hash 453042780, now seen corresponding path program 1 times [2023-08-03 16:04:57,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:57,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457083930] [2023-08-03 16:04:57,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:57,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:57,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:57,467 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:04:57,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:57,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457083930] [2023-08-03 16:04:57,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457083930] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:04:57,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:04:57,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 16:04:57,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953415954] [2023-08-03 16:04:57,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:04:57,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:04:57,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:57,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:04:57,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:04:57,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 520 [2023-08-03 16:04:57,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 108 transitions, 768 flow. Second operand has 5 states, 5 states have (on average 215.4) internal successors, (1077), 5 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:57,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:57,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 520 [2023-08-03 16:04:57,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:58,192 INFO L124 PetriNetUnfolderBase]: 2365/4945 cut-off events. [2023-08-03 16:04:58,192 INFO L125 PetriNetUnfolderBase]: For 5424/5438 co-relation queries the response was YES. [2023-08-03 16:04:58,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13895 conditions, 4945 events. 2365/4945 cut-off events. For 5424/5438 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 36278 event pairs, 859 based on Foata normal form. 357/4993 useless extension candidates. Maximal degree in co-relation 10771. Up to 2429 conditions per place. [2023-08-03 16:04:58,213 INFO L140 encePairwiseOnDemand]: 508/520 looper letters, 111 selfloop transitions, 13 changer transitions 12/146 dead transitions. [2023-08-03 16:04:58,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 146 transitions, 1167 flow [2023-08-03 16:04:58,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:04:58,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:04:58,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 932 transitions. [2023-08-03 16:04:58,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4480769230769231 [2023-08-03 16:04:58,216 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 932 transitions. [2023-08-03 16:04:58,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 932 transitions. [2023-08-03 16:04:58,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:58,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 932 transitions. [2023-08-03 16:04:58,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:58,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 520.0) internal successors, (2600), 5 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:58,222 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 520.0) internal successors, (2600), 5 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:58,222 INFO L175 Difference]: Start difference. First operand has 100 places, 108 transitions, 768 flow. Second operand 4 states and 932 transitions. [2023-08-03 16:04:58,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 146 transitions, 1167 flow [2023-08-03 16:04:58,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 146 transitions, 1150 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-03 16:04:58,252 INFO L231 Difference]: Finished difference. Result has 102 places, 92 transitions, 590 flow [2023-08-03 16:04:58,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=520, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=590, PETRI_PLACES=102, PETRI_TRANSITIONS=92} [2023-08-03 16:04:58,252 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 49 predicate places. [2023-08-03 16:04:58,252 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 92 transitions, 590 flow [2023-08-03 16:04:58,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 215.4) internal successors, (1077), 5 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:58,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:58,253 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:58,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-03 16:04:58,253 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-08-03 16:04:58,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:58,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1481941126, now seen corresponding path program 1 times [2023-08-03 16:04:58,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:58,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234013749] [2023-08-03 16:04:58,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:58,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:58,387 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:04:58,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:58,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234013749] [2023-08-03 16:04:58,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234013749] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:04:58,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:04:58,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 16:04:58,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954044593] [2023-08-03 16:04:58,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:04:58,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:04:58,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:58,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:04:58,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:04:58,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 520 [2023-08-03 16:04:58,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 92 transitions, 590 flow. Second operand has 5 states, 5 states have (on average 221.8) internal successors, (1109), 5 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:58,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:58,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 520 [2023-08-03 16:04:58,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:58,999 INFO L124 PetriNetUnfolderBase]: 2181/4559 cut-off events. [2023-08-03 16:04:58,999 INFO L125 PetriNetUnfolderBase]: For 5527/5543 co-relation queries the response was YES. [2023-08-03 16:04:59,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15100 conditions, 4559 events. 2181/4559 cut-off events. For 5527/5543 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 32528 event pairs, 989 based on Foata normal form. 18/4255 useless extension candidates. Maximal degree in co-relation 11752. Up to 2465 conditions per place. [2023-08-03 16:04:59,019 INFO L140 encePairwiseOnDemand]: 515/520 looper letters, 136 selfloop transitions, 19 changer transitions 10/175 dead transitions. [2023-08-03 16:04:59,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 175 transitions, 1303 flow [2023-08-03 16:04:59,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 16:04:59,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 16:04:59,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1211 transitions. [2023-08-03 16:04:59,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46576923076923077 [2023-08-03 16:04:59,023 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1211 transitions. [2023-08-03 16:04:59,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1211 transitions. [2023-08-03 16:04:59,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:59,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1211 transitions. [2023-08-03 16:04:59,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 242.2) internal successors, (1211), 5 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:59,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 520.0) internal successors, (3120), 6 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:59,030 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 520.0) internal successors, (3120), 6 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:59,030 INFO L175 Difference]: Start difference. First operand has 102 places, 92 transitions, 590 flow. Second operand 5 states and 1211 transitions. [2023-08-03 16:04:59,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 175 transitions, 1303 flow [2023-08-03 16:04:59,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 175 transitions, 1302 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:04:59,058 INFO L231 Difference]: Finished difference. Result has 107 places, 94 transitions, 648 flow [2023-08-03 16:04:59,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=520, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=648, PETRI_PLACES=107, PETRI_TRANSITIONS=94} [2023-08-03 16:04:59,059 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 54 predicate places. [2023-08-03 16:04:59,059 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 94 transitions, 648 flow [2023-08-03 16:04:59,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 221.8) internal successors, (1109), 5 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:59,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:59,060 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:59,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-03 16:04:59,060 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-08-03 16:04:59,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:59,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1180165820, now seen corresponding path program 1 times [2023-08-03 16:04:59,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:59,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810805939] [2023-08-03 16:04:59,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:59,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:59,217 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:04:59,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:59,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810805939] [2023-08-03 16:04:59,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810805939] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:04:59,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:04:59,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 16:04:59,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287129657] [2023-08-03 16:04:59,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:04:59,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:04:59,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:59,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:04:59,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:04:59,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 520 [2023-08-03 16:04:59,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 94 transitions, 648 flow. Second operand has 5 states, 5 states have (on average 221.8) internal successors, (1109), 5 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:59,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:59,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 520 [2023-08-03 16:04:59,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:59,906 INFO L124 PetriNetUnfolderBase]: 2190/4610 cut-off events. [2023-08-03 16:04:59,907 INFO L125 PetriNetUnfolderBase]: For 6646/6673 co-relation queries the response was YES. [2023-08-03 16:04:59,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15776 conditions, 4610 events. 2190/4610 cut-off events. For 6646/6673 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 33221 event pairs, 952 based on Foata normal form. 29/4319 useless extension candidates. Maximal degree in co-relation 12804. Up to 2463 conditions per place. [2023-08-03 16:04:59,930 INFO L140 encePairwiseOnDemand]: 515/520 looper letters, 133 selfloop transitions, 21 changer transitions 11/176 dead transitions. [2023-08-03 16:04:59,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 176 transitions, 1359 flow [2023-08-03 16:04:59,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 16:04:59,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 16:04:59,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1210 transitions. [2023-08-03 16:04:59,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4653846153846154 [2023-08-03 16:04:59,933 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1210 transitions. [2023-08-03 16:04:59,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1210 transitions. [2023-08-03 16:04:59,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:59,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1210 transitions. [2023-08-03 16:04:59,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:59,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 520.0) internal successors, (3120), 6 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:59,940 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 520.0) internal successors, (3120), 6 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:59,940 INFO L175 Difference]: Start difference. First operand has 107 places, 94 transitions, 648 flow. Second operand 5 states and 1210 transitions. [2023-08-03 16:04:59,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 176 transitions, 1359 flow [2023-08-03 16:04:59,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 176 transitions, 1328 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-03 16:04:59,975 INFO L231 Difference]: Finished difference. Result has 111 places, 97 transitions, 690 flow [2023-08-03 16:04:59,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=520, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=690, PETRI_PLACES=111, PETRI_TRANSITIONS=97} [2023-08-03 16:04:59,976 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 58 predicate places. [2023-08-03 16:04:59,976 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 97 transitions, 690 flow [2023-08-03 16:04:59,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 221.8) internal successors, (1109), 5 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:59,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:59,976 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:59,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-03 16:04:59,977 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-08-03 16:04:59,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:59,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1783708810, now seen corresponding path program 1 times [2023-08-03 16:04:59,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:59,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34559535] [2023-08-03 16:04:59,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:59,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:59,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:05:00,153 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:05:00,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:05:00,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34559535] [2023-08-03 16:05:00,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34559535] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:05:00,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:05:00,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 16:05:00,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973186583] [2023-08-03 16:05:00,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:05:00,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:05:00,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:05:00,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:05:00,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:05:00,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 520 [2023-08-03 16:05:00,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 97 transitions, 690 flow. Second operand has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:00,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:05:00,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 520 [2023-08-03 16:05:00,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:05:00,826 INFO L124 PetriNetUnfolderBase]: 2224/4784 cut-off events. [2023-08-03 16:05:00,826 INFO L125 PetriNetUnfolderBase]: For 9126/9166 co-relation queries the response was YES. [2023-08-03 16:05:00,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17025 conditions, 4784 events. 2224/4784 cut-off events. For 9126/9166 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 36039 event pairs, 997 based on Foata normal form. 110/4582 useless extension candidates. Maximal degree in co-relation 16200. Up to 3242 conditions per place. [2023-08-03 16:05:00,851 INFO L140 encePairwiseOnDemand]: 510/520 looper letters, 135 selfloop transitions, 16 changer transitions 3/168 dead transitions. [2023-08-03 16:05:00,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 168 transitions, 1526 flow [2023-08-03 16:05:00,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:05:00,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:05:00,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 936 transitions. [2023-08-03 16:05:00,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2023-08-03 16:05:00,854 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 936 transitions. [2023-08-03 16:05:00,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 936 transitions. [2023-08-03 16:05:00,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:05:00,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 936 transitions. [2023-08-03 16:05:00,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:00,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 520.0) internal successors, (2600), 5 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:00,860 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 520.0) internal successors, (2600), 5 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:00,860 INFO L175 Difference]: Start difference. First operand has 111 places, 97 transitions, 690 flow. Second operand 4 states and 936 transitions. [2023-08-03 16:05:00,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 168 transitions, 1526 flow [2023-08-03 16:05:00,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 168 transitions, 1474 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-03 16:05:00,908 INFO L231 Difference]: Finished difference. Result has 113 places, 108 transitions, 781 flow [2023-08-03 16:05:00,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=520, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=781, PETRI_PLACES=113, PETRI_TRANSITIONS=108} [2023-08-03 16:05:00,909 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 60 predicate places. [2023-08-03 16:05:00,909 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 108 transitions, 781 flow [2023-08-03 16:05:00,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:00,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:05:00,910 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:05:00,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-03 16:05:00,910 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-08-03 16:05:00,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:05:00,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1290761322, now seen corresponding path program 1 times [2023-08-03 16:05:00,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:05:00,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482822961] [2023-08-03 16:05:00,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:05:00,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:05:00,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:05:01,010 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:05:01,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:05:01,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482822961] [2023-08-03 16:05:01,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482822961] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:05:01,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:05:01,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 16:05:01,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821599747] [2023-08-03 16:05:01,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:05:01,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:05:01,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:05:01,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:05:01,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:05:01,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 520 [2023-08-03 16:05:01,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 108 transitions, 781 flow. Second operand has 5 states, 5 states have (on average 223.2) internal successors, (1116), 5 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:01,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:05:01,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 520 [2023-08-03 16:05:01,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:05:01,651 INFO L124 PetriNetUnfolderBase]: 2244/4843 cut-off events. [2023-08-03 16:05:01,651 INFO L125 PetriNetUnfolderBase]: For 9774/9805 co-relation queries the response was YES. [2023-08-03 16:05:01,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19008 conditions, 4843 events. 2244/4843 cut-off events. For 9774/9805 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 36295 event pairs, 557 based on Foata normal form. 70/4613 useless extension candidates. Maximal degree in co-relation 18380. Up to 1369 conditions per place. [2023-08-03 16:05:01,676 INFO L140 encePairwiseOnDemand]: 514/520 looper letters, 195 selfloop transitions, 20 changer transitions 23/250 dead transitions. [2023-08-03 16:05:01,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 250 transitions, 2079 flow [2023-08-03 16:05:01,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-03 16:05:01,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-03 16:05:01,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1912 transitions. [2023-08-03 16:05:01,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4596153846153846 [2023-08-03 16:05:01,681 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1912 transitions. [2023-08-03 16:05:01,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1912 transitions. [2023-08-03 16:05:01,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:05:01,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1912 transitions. [2023-08-03 16:05:01,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 239.0) internal successors, (1912), 8 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:01,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 520.0) internal successors, (4680), 9 states have internal predecessors, (4680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:01,690 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 520.0) internal successors, (4680), 9 states have internal predecessors, (4680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:01,690 INFO L175 Difference]: Start difference. First operand has 113 places, 108 transitions, 781 flow. Second operand 8 states and 1912 transitions. [2023-08-03 16:05:01,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 250 transitions, 2079 flow [2023-08-03 16:05:01,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 250 transitions, 2078 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:05:01,737 INFO L231 Difference]: Finished difference. Result has 121 places, 109 transitions, 835 flow [2023-08-03 16:05:01,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=520, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=835, PETRI_PLACES=121, PETRI_TRANSITIONS=109} [2023-08-03 16:05:01,738 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 68 predicate places. [2023-08-03 16:05:01,738 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 109 transitions, 835 flow [2023-08-03 16:05:01,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 223.2) internal successors, (1116), 5 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:01,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:05:01,738 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:05:01,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-03 16:05:01,739 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-08-03 16:05:01,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:05:01,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1565485816, now seen corresponding path program 1 times [2023-08-03 16:05:01,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:05:01,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464804720] [2023-08-03 16:05:01,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:05:01,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:05:01,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:05:01,810 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:05:01,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:05:01,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464804720] [2023-08-03 16:05:01,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464804720] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:05:01,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:05:01,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 16:05:01,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117813913] [2023-08-03 16:05:01,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:05:01,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:05:01,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:05:01,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:05:01,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:05:01,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 520 [2023-08-03 16:05:01,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 109 transitions, 835 flow. Second operand has 5 states, 5 states have (on average 223.2) internal successors, (1116), 5 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:01,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:05:01,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 520 [2023-08-03 16:05:01,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:05:02,550 INFO L124 PetriNetUnfolderBase]: 2255/4938 cut-off events. [2023-08-03 16:05:02,551 INFO L125 PetriNetUnfolderBase]: For 12054/12111 co-relation queries the response was YES. [2023-08-03 16:05:02,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19722 conditions, 4938 events. 2255/4938 cut-off events. For 12054/12111 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 37540 event pairs, 622 based on Foata normal form. 97/4737 useless extension candidates. Maximal degree in co-relation 19214. Up to 1415 conditions per place. [2023-08-03 16:05:02,577 INFO L140 encePairwiseOnDemand]: 513/520 looper letters, 194 selfloop transitions, 25 changer transitions 28/260 dead transitions. [2023-08-03 16:05:02,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 260 transitions, 2233 flow [2023-08-03 16:05:02,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-03 16:05:02,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-03 16:05:02,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1915 transitions. [2023-08-03 16:05:02,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46033653846153844 [2023-08-03 16:05:02,581 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1915 transitions. [2023-08-03 16:05:02,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1915 transitions. [2023-08-03 16:05:02,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:05:02,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1915 transitions. [2023-08-03 16:05:02,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 239.375) internal successors, (1915), 8 states have internal predecessors, (1915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:02,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 520.0) internal successors, (4680), 9 states have internal predecessors, (4680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:02,590 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 520.0) internal successors, (4680), 9 states have internal predecessors, (4680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:02,590 INFO L175 Difference]: Start difference. First operand has 121 places, 109 transitions, 835 flow. Second operand 8 states and 1915 transitions. [2023-08-03 16:05:02,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 260 transitions, 2233 flow [2023-08-03 16:05:02,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 260 transitions, 2190 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-03 16:05:02,645 INFO L231 Difference]: Finished difference. Result has 126 places, 115 transitions, 922 flow [2023-08-03 16:05:02,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=520, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=922, PETRI_PLACES=126, PETRI_TRANSITIONS=115} [2023-08-03 16:05:02,645 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 73 predicate places. [2023-08-03 16:05:02,645 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 115 transitions, 922 flow [2023-08-03 16:05:02,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 223.2) internal successors, (1116), 5 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:02,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:05:02,646 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:05:02,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-03 16:05:02,646 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-08-03 16:05:02,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:05:02,647 INFO L85 PathProgramCache]: Analyzing trace with hash 227533608, now seen corresponding path program 1 times [2023-08-03 16:05:02,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:05:02,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474568684] [2023-08-03 16:05:02,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:05:02,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:05:02,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:05:02,782 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:05:02,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:05:02,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474568684] [2023-08-03 16:05:02,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474568684] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:05:02,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:05:02,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-03 16:05:02,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511315613] [2023-08-03 16:05:02,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:05:02,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-03 16:05:02,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:05:02,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-03 16:05:02,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-03 16:05:02,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 520 [2023-08-03 16:05:02,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 115 transitions, 922 flow. Second operand has 7 states, 7 states have (on average 217.57142857142858) internal successors, (1523), 7 states have internal predecessors, (1523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:02,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:05:02,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 520 [2023-08-03 16:05:02,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:05:04,050 INFO L124 PetriNetUnfolderBase]: 2199/4829 cut-off events. [2023-08-03 16:05:04,050 INFO L125 PetriNetUnfolderBase]: For 13032/13093 co-relation queries the response was YES. [2023-08-03 16:05:04,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19586 conditions, 4829 events. 2199/4829 cut-off events. For 13032/13093 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 36556 event pairs, 490 based on Foata normal form. 128/4671 useless extension candidates. Maximal degree in co-relation 19073. Up to 1395 conditions per place. [2023-08-03 16:05:04,080 INFO L140 encePairwiseOnDemand]: 509/520 looper letters, 254 selfloop transitions, 50 changer transitions 48/365 dead transitions. [2023-08-03 16:05:04,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 365 transitions, 3074 flow [2023-08-03 16:05:04,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-03 16:05:04,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-03 16:05:04,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4541 transitions. [2023-08-03 16:05:04,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4366346153846154 [2023-08-03 16:05:04,091 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4541 transitions. [2023-08-03 16:05:04,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4541 transitions. [2023-08-03 16:05:04,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:05:04,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4541 transitions. [2023-08-03 16:05:04,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 227.05) internal successors, (4541), 20 states have internal predecessors, (4541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:04,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 520.0) internal successors, (10920), 21 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:04,115 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 520.0) internal successors, (10920), 21 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:04,115 INFO L175 Difference]: Start difference. First operand has 126 places, 115 transitions, 922 flow. Second operand 20 states and 4541 transitions. [2023-08-03 16:05:04,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 365 transitions, 3074 flow [2023-08-03 16:05:04,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 365 transitions, 3047 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-08-03 16:05:04,175 INFO L231 Difference]: Finished difference. Result has 145 places, 129 transitions, 1146 flow [2023-08-03 16:05:04,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=520, PETRI_DIFFERENCE_MINUEND_FLOW=903, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1146, PETRI_PLACES=145, PETRI_TRANSITIONS=129} [2023-08-03 16:05:04,176 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 92 predicate places. [2023-08-03 16:05:04,176 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 129 transitions, 1146 flow [2023-08-03 16:05:04,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 217.57142857142858) internal successors, (1523), 7 states have internal predecessors, (1523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:04,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:05:04,177 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:05:04,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-03 16:05:04,177 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-08-03 16:05:04,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:05:04,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1177983789, now seen corresponding path program 1 times [2023-08-03 16:05:04,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:05:04,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906647148] [2023-08-03 16:05:04,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:05:04,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:05:04,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:05:04,296 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:05:04,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:05:04,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906647148] [2023-08-03 16:05:04,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906647148] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:05:04,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:05:04,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-03 16:05:04,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614461943] [2023-08-03 16:05:04,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:05:04,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 16:05:04,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:05:04,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 16:05:04,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-03 16:05:04,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 520 [2023-08-03 16:05:04,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 129 transitions, 1146 flow. Second operand has 6 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:04,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:05:04,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 520 [2023-08-03 16:05:04,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:05:05,341 INFO L124 PetriNetUnfolderBase]: 2107/4660 cut-off events. [2023-08-03 16:05:05,341 INFO L125 PetriNetUnfolderBase]: For 15087/15164 co-relation queries the response was YES. [2023-08-03 16:05:05,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19691 conditions, 4660 events. 2107/4660 cut-off events. For 15087/15164 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 35078 event pairs, 573 based on Foata normal form. 130/4508 useless extension candidates. Maximal degree in co-relation 19110. Up to 1324 conditions per place. [2023-08-03 16:05:05,367 INFO L140 encePairwiseOnDemand]: 512/520 looper letters, 232 selfloop transitions, 36 changer transitions 42/323 dead transitions. [2023-08-03 16:05:05,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 323 transitions, 3012 flow [2023-08-03 16:05:05,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-03 16:05:05,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-03 16:05:05,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3028 transitions. [2023-08-03 16:05:05,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44792899408284026 [2023-08-03 16:05:05,370 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3028 transitions. [2023-08-03 16:05:05,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3028 transitions. [2023-08-03 16:05:05,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:05:05,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3028 transitions. [2023-08-03 16:05:05,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 232.92307692307693) internal successors, (3028), 13 states have internal predecessors, (3028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:05,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 520.0) internal successors, (7280), 14 states have internal predecessors, (7280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:05,381 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 520.0) internal successors, (7280), 14 states have internal predecessors, (7280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:05,381 INFO L175 Difference]: Start difference. First operand has 145 places, 129 transitions, 1146 flow. Second operand 13 states and 3028 transitions. [2023-08-03 16:05:05,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 323 transitions, 3012 flow [2023-08-03 16:05:05,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 323 transitions, 2938 flow, removed 4 selfloop flow, removed 10 redundant places. [2023-08-03 16:05:05,452 INFO L231 Difference]: Finished difference. Result has 150 places, 135 transitions, 1246 flow [2023-08-03 16:05:05,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=520, PETRI_DIFFERENCE_MINUEND_FLOW=1090, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1246, PETRI_PLACES=150, PETRI_TRANSITIONS=135} [2023-08-03 16:05:05,453 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 97 predicate places. [2023-08-03 16:05:05,453 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 135 transitions, 1246 flow [2023-08-03 16:05:05,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:05,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:05:05,453 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:05:05,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-03 16:05:05,454 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-08-03 16:05:05,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:05:05,454 INFO L85 PathProgramCache]: Analyzing trace with hash 425282901, now seen corresponding path program 1 times [2023-08-03 16:05:05,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:05:05,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566516978] [2023-08-03 16:05:05,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:05:05,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:05:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:05:05,556 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:05:05,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:05:05,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566516978] [2023-08-03 16:05:05,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566516978] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:05:05,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:05:05,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 16:05:05,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130081351] [2023-08-03 16:05:05,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:05:05,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 16:05:05,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:05:05,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 16:05:05,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-03 16:05:05,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 520 [2023-08-03 16:05:05,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 135 transitions, 1246 flow. Second operand has 4 states, 4 states have (on average 223.25) internal successors, (893), 4 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:05,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:05:05,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 520 [2023-08-03 16:05:05,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:05:06,321 INFO L124 PetriNetUnfolderBase]: 2846/6249 cut-off events. [2023-08-03 16:05:06,321 INFO L125 PetriNetUnfolderBase]: For 19917/20116 co-relation queries the response was YES. [2023-08-03 16:05:06,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26537 conditions, 6249 events. 2846/6249 cut-off events. For 19917/20116 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 49981 event pairs, 973 based on Foata normal form. 226/6230 useless extension candidates. Maximal degree in co-relation 25897. Up to 3998 conditions per place. [2023-08-03 16:05:06,359 INFO L140 encePairwiseOnDemand]: 510/520 looper letters, 163 selfloop transitions, 34 changer transitions 4/228 dead transitions. [2023-08-03 16:05:06,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 228 transitions, 2470 flow [2023-08-03 16:05:06,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:05:06,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:05:06,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 952 transitions. [2023-08-03 16:05:06,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4576923076923077 [2023-08-03 16:05:06,361 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 952 transitions. [2023-08-03 16:05:06,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 952 transitions. [2023-08-03 16:05:06,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:05:06,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 952 transitions. [2023-08-03 16:05:06,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:06,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 520.0) internal successors, (2600), 5 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:06,364 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 520.0) internal successors, (2600), 5 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:06,364 INFO L175 Difference]: Start difference. First operand has 150 places, 135 transitions, 1246 flow. Second operand 4 states and 952 transitions. [2023-08-03 16:05:06,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 228 transitions, 2470 flow [2023-08-03 16:05:06,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 228 transitions, 2414 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-08-03 16:05:06,431 INFO L231 Difference]: Finished difference. Result has 147 places, 163 transitions, 1613 flow [2023-08-03 16:05:06,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=520, PETRI_DIFFERENCE_MINUEND_FLOW=1213, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1613, PETRI_PLACES=147, PETRI_TRANSITIONS=163} [2023-08-03 16:05:06,431 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 94 predicate places. [2023-08-03 16:05:06,432 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 163 transitions, 1613 flow [2023-08-03 16:05:06,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 223.25) internal successors, (893), 4 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:06,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:05:06,432 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:05:06,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-03 16:05:06,432 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-08-03 16:05:06,433 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:05:06,433 INFO L85 PathProgramCache]: Analyzing trace with hash 42592777, now seen corresponding path program 2 times [2023-08-03 16:05:06,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:05:06,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960258941] [2023-08-03 16:05:06,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:05:06,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:05:06,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:05:06,578 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-03 16:05:06,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:05:06,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960258941] [2023-08-03 16:05:06,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960258941] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:05:06,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934201606] [2023-08-03 16:05:06,578 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 16:05:06,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:05:06,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:05:06,582 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:05:06,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 16:05:06,698 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 16:05:06,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 16:05:06,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-03 16:05:06,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:05:06,837 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 [2023-08-03 16:05:06,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 16:05:06,863 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 [2023-08-03 16:05:06,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 16:05:06,885 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 [2023-08-03 16:05:06,898 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-03 16:05:06,899 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:05:06,915 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_346 (Array Int Int))) (not (= 0 (select (select (store |c_#pthreadsMutex| |c_~#B~0.base| v_ArrVal_346) |c_~#A~0.base|) |c_~#A~0.offset|)))) is different from false [2023-08-03 16:05:06,949 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 16:05:06,950 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 22 treesize of output 23 [2023-08-03 16:05:06,956 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 57 [2023-08-03 16:05:07,021 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 2 not checked. [2023-08-03 16:05:07,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934201606] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:05:07,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:05:07,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-03 16:05:07,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061702415] [2023-08-03 16:05:07,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:05:07,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-03 16:05:07,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:05:07,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-03 16:05:07,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=85, Unknown=3, NotChecked=20, Total=156 [2023-08-03 16:05:07,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 520 [2023-08-03 16:05:07,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 163 transitions, 1613 flow. Second operand has 13 states, 13 states have (on average 194.23076923076923) internal successors, (2525), 13 states have internal predecessors, (2525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:07,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:05:07,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 520 [2023-08-03 16:05:07,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:05:07,650 INFO L124 PetriNetUnfolderBase]: 1960/4234 cut-off events. [2023-08-03 16:05:07,650 INFO L125 PetriNetUnfolderBase]: For 12430/12522 co-relation queries the response was YES. [2023-08-03 16:05:07,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19214 conditions, 4234 events. 1960/4234 cut-off events. For 12430/12522 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 29806 event pairs, 682 based on Foata normal form. 150/4368 useless extension candidates. Maximal degree in co-relation 19034. Up to 2846 conditions per place. [2023-08-03 16:05:07,674 INFO L140 encePairwiseOnDemand]: 511/520 looper letters, 99 selfloop transitions, 13 changer transitions 11/136 dead transitions. [2023-08-03 16:05:07,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 136 transitions, 1364 flow [2023-08-03 16:05:07,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:05:07,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:05:07,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 822 transitions. [2023-08-03 16:05:07,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951923076923077 [2023-08-03 16:05:07,675 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 822 transitions. [2023-08-03 16:05:07,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 822 transitions. [2023-08-03 16:05:07,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:05:07,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 822 transitions. [2023-08-03 16:05:07,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 205.5) internal successors, (822), 4 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:07,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 520.0) internal successors, (2600), 5 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:07,678 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 520.0) internal successors, (2600), 5 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:07,678 INFO L175 Difference]: Start difference. First operand has 147 places, 163 transitions, 1613 flow. Second operand 4 states and 822 transitions. [2023-08-03 16:05:07,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 136 transitions, 1364 flow [2023-08-03 16:05:07,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 136 transitions, 1238 flow, removed 19 selfloop flow, removed 22 redundant places. [2023-08-03 16:05:07,708 INFO L231 Difference]: Finished difference. Result has 117 places, 104 transitions, 786 flow [2023-08-03 16:05:07,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=520, PETRI_DIFFERENCE_MINUEND_FLOW=857, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=786, PETRI_PLACES=117, PETRI_TRANSITIONS=104} [2023-08-03 16:05:07,708 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 64 predicate places. [2023-08-03 16:05:07,709 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 104 transitions, 786 flow [2023-08-03 16:05:07,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 194.23076923076923) internal successors, (2525), 13 states have internal predecessors, (2525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:07,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:05:07,709 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:05:07,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 16:05:07,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:05:07,910 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-08-03 16:05:07,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:05:07,910 INFO L85 PathProgramCache]: Analyzing trace with hash 957518252, now seen corresponding path program 1 times [2023-08-03 16:05:07,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:05:07,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106174196] [2023-08-03 16:05:07,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:05:07,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:05:07,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:05:08,003 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:05:08,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:05:08,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106174196] [2023-08-03 16:05:08,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106174196] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:05:08,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:05:08,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 16:05:08,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526852099] [2023-08-03 16:05:08,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:05:08,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 16:05:08,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:05:08,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 16:05:08,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 16:05:08,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 520 [2023-08-03 16:05:08,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 104 transitions, 786 flow. Second operand has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:08,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:05:08,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 520 [2023-08-03 16:05:08,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:05:08,526 INFO L124 PetriNetUnfolderBase]: 1799/3889 cut-off events. [2023-08-03 16:05:08,526 INFO L125 PetriNetUnfolderBase]: For 9081/9107 co-relation queries the response was YES. [2023-08-03 16:05:08,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17405 conditions, 3889 events. 1799/3889 cut-off events. For 9081/9107 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 26964 event pairs, 715 based on Foata normal form. 62/3930 useless extension candidates. Maximal degree in co-relation 12993. Up to 1621 conditions per place. [2023-08-03 16:05:08,542 INFO L140 encePairwiseOnDemand]: 514/520 looper letters, 123 selfloop transitions, 11 changer transitions 32/180 dead transitions. [2023-08-03 16:05:08,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 180 transitions, 1695 flow [2023-08-03 16:05:08,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:05:08,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:05:08,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 956 transitions. [2023-08-03 16:05:08,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4596153846153846 [2023-08-03 16:05:08,544 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 956 transitions. [2023-08-03 16:05:08,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 956 transitions. [2023-08-03 16:05:08,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:05:08,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 956 transitions. [2023-08-03 16:05:08,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:08,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 520.0) internal successors, (2600), 5 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:08,547 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 520.0) internal successors, (2600), 5 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:08,547 INFO L175 Difference]: Start difference. First operand has 117 places, 104 transitions, 786 flow. Second operand 4 states and 956 transitions. [2023-08-03 16:05:08,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 180 transitions, 1695 flow [2023-08-03 16:05:08,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 180 transitions, 1613 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-03 16:05:08,559 INFO L231 Difference]: Finished difference. Result has 116 places, 98 transitions, 712 flow [2023-08-03 16:05:08,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=520, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=712, PETRI_PLACES=116, PETRI_TRANSITIONS=98} [2023-08-03 16:05:08,559 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 63 predicate places. [2023-08-03 16:05:08,560 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 98 transitions, 712 flow [2023-08-03 16:05:08,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:08,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:05:08,560 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:05:08,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-03 16:05:08,560 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-08-03 16:05:08,560 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:05:08,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1051634141, now seen corresponding path program 1 times [2023-08-03 16:05:08,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:05:08,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915407236] [2023-08-03 16:05:08,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:05:08,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:05:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:05:08,713 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:05:08,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:05:08,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915407236] [2023-08-03 16:05:08,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915407236] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:05:08,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:05:08,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-03 16:05:08,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876161558] [2023-08-03 16:05:08,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:05:08,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 16:05:08,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:05:08,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 16:05:08,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 16:05:08,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 520 [2023-08-03 16:05:08,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 98 transitions, 712 flow. Second operand has 6 states, 6 states have (on average 216.66666666666666) internal successors, (1300), 6 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:08,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:05:08,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 520 [2023-08-03 16:05:08,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:05:08,979 INFO L124 PetriNetUnfolderBase]: 428/1080 cut-off events. [2023-08-03 16:05:08,979 INFO L125 PetriNetUnfolderBase]: For 2225/2231 co-relation queries the response was YES. [2023-08-03 16:05:08,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4120 conditions, 1080 events. 428/1080 cut-off events. For 2225/2231 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5972 event pairs, 121 based on Foata normal form. 122/1193 useless extension candidates. Maximal degree in co-relation 3637. Up to 714 conditions per place. [2023-08-03 16:05:08,983 INFO L140 encePairwiseOnDemand]: 513/520 looper letters, 42 selfloop transitions, 7 changer transitions 45/101 dead transitions. [2023-08-03 16:05:08,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 101 transitions, 869 flow [2023-08-03 16:05:08,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:05:08,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:05:08,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 906 transitions. [2023-08-03 16:05:08,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4355769230769231 [2023-08-03 16:05:08,984 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 906 transitions. [2023-08-03 16:05:08,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 906 transitions. [2023-08-03 16:05:08,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:05:08,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 906 transitions. [2023-08-03 16:05:08,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 226.5) internal successors, (906), 4 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:08,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 520.0) internal successors, (2600), 5 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:08,987 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 520.0) internal successors, (2600), 5 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:08,987 INFO L175 Difference]: Start difference. First operand has 116 places, 98 transitions, 712 flow. Second operand 4 states and 906 transitions. [2023-08-03 16:05:08,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 101 transitions, 869 flow [2023-08-03 16:05:08,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 101 transitions, 839 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-03 16:05:08,991 INFO L231 Difference]: Finished difference. Result has 112 places, 45 transitions, 300 flow [2023-08-03 16:05:08,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=520, PETRI_DIFFERENCE_MINUEND_FLOW=527, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=300, PETRI_PLACES=112, PETRI_TRANSITIONS=45} [2023-08-03 16:05:08,992 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 59 predicate places. [2023-08-03 16:05:08,992 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 45 transitions, 300 flow [2023-08-03 16:05:08,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 216.66666666666666) internal successors, (1300), 6 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:08,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:05:08,992 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:05:08,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-03 16:05:08,992 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-08-03 16:05:08,992 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:05:08,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1553268668, now seen corresponding path program 1 times [2023-08-03 16:05:08,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:05:08,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277836289] [2023-08-03 16:05:08,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:05:08,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:05:09,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:05:09,286 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:05:09,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:05:09,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277836289] [2023-08-03 16:05:09,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277836289] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:05:09,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:05:09,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-03 16:05:09,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161216905] [2023-08-03 16:05:09,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:05:09,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 16:05:09,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:05:09,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 16:05:09,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 16:05:09,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 520 [2023-08-03 16:05:09,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 45 transitions, 300 flow. Second operand has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:09,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:05:09,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 520 [2023-08-03 16:05:09,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:05:09,526 INFO L124 PetriNetUnfolderBase]: 76/224 cut-off events. [2023-08-03 16:05:09,527 INFO L125 PetriNetUnfolderBase]: For 608/608 co-relation queries the response was YES. [2023-08-03 16:05:09,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 984 conditions, 224 events. 76/224 cut-off events. For 608/608 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 870 event pairs, 53 based on Foata normal form. 4/226 useless extension candidates. Maximal degree in co-relation 960. Up to 114 conditions per place. [2023-08-03 16:05:09,528 INFO L140 encePairwiseOnDemand]: 514/520 looper letters, 0 selfloop transitions, 0 changer transitions 59/59 dead transitions. [2023-08-03 16:05:09,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 59 transitions, 483 flow [2023-08-03 16:05:09,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:05:09,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:05:09,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 897 transitions. [2023-08-03 16:05:09,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43125 [2023-08-03 16:05:09,529 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 897 transitions. [2023-08-03 16:05:09,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 897 transitions. [2023-08-03 16:05:09,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:05:09,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 897 transitions. [2023-08-03 16:05:09,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 224.25) internal successors, (897), 4 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:09,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 520.0) internal successors, (2600), 5 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:09,533 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 520.0) internal successors, (2600), 5 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:09,533 INFO L175 Difference]: Start difference. First operand has 112 places, 45 transitions, 300 flow. Second operand 4 states and 897 transitions. [2023-08-03 16:05:09,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 59 transitions, 483 flow [2023-08-03 16:05:09,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 59 transitions, 380 flow, removed 12 selfloop flow, removed 20 redundant places. [2023-08-03 16:05:09,535 INFO L231 Difference]: Finished difference. Result has 75 places, 0 transitions, 0 flow [2023-08-03 16:05:09,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=520, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=75, PETRI_TRANSITIONS=0} [2023-08-03 16:05:09,536 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 22 predicate places. [2023-08-03 16:05:09,536 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 0 transitions, 0 flow [2023-08-03 16:05:09,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:05:09,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2023-08-03 16:05:09,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (8 of 10 remaining) [2023-08-03 16:05:09,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (7 of 10 remaining) [2023-08-03 16:05:09,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONERROR_FUNCTION (6 of 10 remaining) [2023-08-03 16:05:09,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 10 remaining) [2023-08-03 16:05:09,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 10 remaining) [2023-08-03 16:05:09,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 10 remaining) [2023-08-03 16:05:09,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 10 remaining) [2023-08-03 16:05:09,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 10 remaining) [2023-08-03 16:05:09,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 10 remaining) [2023-08-03 16:05:09,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-03 16:05:09,537 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:05:09,541 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 16:05:09,541 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 16:05:09,544 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 04:05:09 BasicIcfg [2023-08-03 16:05:09,544 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 16:05:09,544 INFO L158 Benchmark]: Toolchain (without parser) took 37237.29ms. Allocated memory was 515.9MB in the beginning and 3.0GB in the end (delta: 2.4GB). Free memory was 468.6MB in the beginning and 1.1GB in the end (delta: -588.7MB). Peak memory consumption was 1.9GB. Max. memory is 16.0GB. [2023-08-03 16:05:09,544 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 339.7MB. Free memory was 292.9MB in the beginning and 292.8MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 16:05:09,545 INFO L158 Benchmark]: CACSL2BoogieTranslator took 365.53ms. Allocated memory is still 515.9MB. Free memory was 468.2MB in the beginning and 448.0MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 16:05:09,545 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.21ms. Allocated memory is still 515.9MB. Free memory was 448.0MB in the beginning and 445.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 16:05:09,545 INFO L158 Benchmark]: Boogie Preprocessor took 30.48ms. Allocated memory is still 515.9MB. Free memory was 445.8MB in the beginning and 444.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 16:05:09,545 INFO L158 Benchmark]: RCFGBuilder took 447.60ms. Allocated memory is still 515.9MB. Free memory was 443.8MB in the beginning and 426.0MB in the end (delta: 17.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 16:05:09,545 INFO L158 Benchmark]: TraceAbstraction took 36346.57ms. Allocated memory was 515.9MB in the beginning and 3.0GB in the end (delta: 2.4GB). Free memory was 425.3MB in the beginning and 1.1GB in the end (delta: -632.0MB). Peak memory consumption was 1.8GB. Max. memory is 16.0GB. [2023-08-03 16:05:09,547 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 339.7MB. Free memory was 292.9MB in the beginning and 292.8MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 365.53ms. Allocated memory is still 515.9MB. Free memory was 468.2MB in the beginning and 448.0MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 38.21ms. Allocated memory is still 515.9MB. Free memory was 448.0MB in the beginning and 445.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 30.48ms. Allocated memory is still 515.9MB. Free memory was 445.8MB in the beginning and 444.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 447.60ms. Allocated memory is still 515.9MB. Free memory was 443.8MB in the beginning and 426.0MB in the end (delta: 17.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 36346.57ms. Allocated memory was 515.9MB in the beginning and 3.0GB in the end (delta: 2.4GB). Free memory was 425.3MB in the beginning and 1.1GB in the end (delta: -632.0MB). Peak memory consumption was 1.8GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 236]: Unsoundness Warning unspecified type, defaulting to int C: short [236] - GenericResultAtLocation [Line: 237]: Unsoundness Warning unspecified type, defaulting to int C: short [237] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.5s, 166 PlacesBefore, 35 PlacesAfterwards, 172 TransitionsBefore, 34 TransitionsAfterwards, 8360 CoEnabledTransitionPairs, 6 FixpointIterations, 39 TrivialSequentialCompositions, 102 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 28 ConcurrentYvCompositions, 7 ChoiceCompositions, 176 TotalNumberOfCompositions, 12840 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7846, independent: 7597, independent conditional: 0, independent unconditional: 7597, dependent: 249, dependent conditional: 0, dependent unconditional: 249, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4616, independent: 4565, independent conditional: 0, independent unconditional: 4565, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7846, independent: 3032, independent conditional: 0, independent unconditional: 3032, dependent: 198, dependent conditional: 0, dependent unconditional: 198, unknown: 4616, unknown conditional: 0, unknown unconditional: 4616] , Statistics on independence cache: Total cache size (in pairs): 113, Positive cache size: 90, Positive conditional cache size: 0, Positive unconditional cache size: 90, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.6s, 239 PlacesBefore, 53 PlacesAfterwards, 249 TransitionsBefore, 52 TransitionsAfterwards, 28424 CoEnabledTransitionPairs, 7 FixpointIterations, 39 TrivialSequentialCompositions, 168 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 52 ConcurrentYvCompositions, 11 ChoiceCompositions, 270 TotalNumberOfCompositions, 44145 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 28383, independent: 27961, independent conditional: 0, independent unconditional: 27961, dependent: 422, dependent conditional: 0, dependent unconditional: 422, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 16289, independent: 16187, independent conditional: 0, independent unconditional: 16187, dependent: 102, dependent conditional: 0, dependent unconditional: 102, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 28383, independent: 11774, independent conditional: 0, independent unconditional: 11774, dependent: 320, dependent conditional: 0, dependent unconditional: 320, unknown: 16289, unknown conditional: 0, unknown unconditional: 16289] , Statistics on independence cache: Total cache size (in pairs): 369, Positive cache size: 332, Positive conditional cache size: 0, Positive unconditional cache size: 332, Negative cache size: 37, Negative conditional cache size: 0, Negative unconditional cache size: 37, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 235 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.8s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.6s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 306 locations, 10 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: 31.4s, OverallIterations: 21, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 21.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3875 SdHoareTripleChecker+Valid, 4.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3191 mSDsluCounter, 856 SdHoareTripleChecker+Invalid, 3.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 84 IncrementalHoareTripleChecker+Unchecked, 559 mSDsCounter, 291 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6537 IncrementalHoareTripleChecker+Invalid, 6912 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 291 mSolverCounterUnsat, 297 mSDtfsCounter, 6537 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 245 GetRequests, 114 SyntacticMatches, 3 SemanticMatches, 128 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1613occurred in iteration=17, InterpolantAutomatonStates: 139, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 452 NumberOfCodeBlocks, 452 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 466 ConstructedInterpolants, 2 QuantifiedInterpolants, 2562 SizeOfPredicates, 4 NumberOfNonLiveVariables, 608 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 26 InterpolantComputations, 19 PerfectInterpolantSequences, 101/115 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 16:05:09,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...