/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_13-privatized_01-priv_nr_true_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 15:57:41,867 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 15:57:41,925 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 15:57:41,930 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 15:57:41,930 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 15:57:41,930 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 15:57:41,931 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 15:57:41,956 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 15:57:41,956 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 15:57:41,960 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 15:57:41,961 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 15:57:41,961 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 15:57:41,961 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 15:57:41,962 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 15:57:41,963 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 15:57:41,963 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 15:57:41,963 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 15:57:41,964 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 15:57:41,964 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 15:57:41,964 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 15:57:41,964 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 15:57:41,965 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 15:57:41,965 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 15:57:41,965 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 15:57:41,966 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 15:57:41,966 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 15:57:41,966 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 15:57:41,967 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 15:57:41,967 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 15:57:41,967 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 15:57:41,968 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:57:41,968 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 15:57:41,968 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 15:57:41,968 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 15:57:41,968 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 15:57:41,968 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 15:57:41,969 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 15:57:41,969 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 15:57:41,969 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 15:57:41,969 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 15:57:41,969 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 15:57:41,969 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 15:57:42,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 15:57:42,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 15:57:42,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 15:57:42,168 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 15:57:42,168 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 15:57:42,169 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_01-priv_nr_true_bound2.i [2023-08-03 15:57:43,204 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 15:57:43,369 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 15:57:43,369 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_01-priv_nr_true_bound2.i [2023-08-03 15:57:43,377 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6b1f3b0c/f2114a0d0b0048bfa9f4293e282730b3/FLAG25805909a [2023-08-03 15:57:43,778 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6b1f3b0c/f2114a0d0b0048bfa9f4293e282730b3 [2023-08-03 15:57:43,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 15:57:43,781 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 15:57:43,781 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 15:57:43,781 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 15:57:43,798 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 15:57:43,798 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:57:43" (1/1) ... [2023-08-03 15:57:43,799 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cf7fedf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:57:43, skipping insertion in model container [2023-08-03 15:57:43,799 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:57:43" (1/1) ... [2023-08-03 15:57:43,840 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 15:57:43,959 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_13-privatized_01-priv_nr_true_bound2.i[1084,1097] [2023-08-03 15:57:44,079 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:57:44,089 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 15:57:44,098 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_13-privatized_01-priv_nr_true_bound2.i[1084,1097] [2023-08-03 15:57:44,112 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-03 15:57:44,113 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-03 15:57:44,129 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:57:44,155 INFO L206 MainTranslator]: Completed translation [2023-08-03 15:57:44,156 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:57:44 WrapperNode [2023-08-03 15:57:44,156 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 15:57:44,157 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 15:57:44,157 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 15:57:44,158 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 15:57:44,161 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:57:44" (1/1) ... [2023-08-03 15:57:44,183 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:57:44" (1/1) ... [2023-08-03 15:57:44,202 INFO L138 Inliner]: procedures = 162, calls = 24, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 100 [2023-08-03 15:57:44,203 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 15:57:44,203 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 15:57:44,204 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 15:57:44,204 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 15:57:44,209 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:57:44" (1/1) ... [2023-08-03 15:57:44,209 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:57:44" (1/1) ... [2023-08-03 15:57:44,214 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:57:44" (1/1) ... [2023-08-03 15:57:44,214 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:57:44" (1/1) ... [2023-08-03 15:57:44,226 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:57:44" (1/1) ... [2023-08-03 15:57:44,228 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:57:44" (1/1) ... [2023-08-03 15:57:44,229 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:57:44" (1/1) ... [2023-08-03 15:57:44,229 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:57:44" (1/1) ... [2023-08-03 15:57:44,231 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 15:57:44,231 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 15:57:44,231 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 15:57:44,231 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 15:57:44,232 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:57:44" (1/1) ... [2023-08-03 15:57:44,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:57:44,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:57:44,253 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 15:57:44,274 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 15:57:44,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 15:57:44,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 15:57:44,281 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 15:57:44,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 15:57:44,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 15:57:44,281 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-03 15:57:44,281 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-03 15:57:44,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 15:57:44,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 15:57:44,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 15:57:44,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 15:57:44,283 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 15:57:44,357 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 15:57:44,358 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 15:57:44,460 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 15:57:44,464 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 15:57:44,464 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-03 15:57:44,465 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:57:44 BoogieIcfgContainer [2023-08-03 15:57:44,465 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 15:57:44,466 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 15:57:44,467 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 15:57:44,468 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 15:57:44,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 03:57:43" (1/3) ... [2023-08-03 15:57:44,469 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bcba4a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:57:44, skipping insertion in model container [2023-08-03 15:57:44,469 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:57:44" (2/3) ... [2023-08-03 15:57:44,469 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bcba4a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:57:44, skipping insertion in model container [2023-08-03 15:57:44,469 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:57:44" (3/3) ... [2023-08-03 15:57:44,470 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_13-privatized_01-priv_nr_true_bound2.i [2023-08-03 15:57:44,475 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 15:57:44,480 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 15:57:44,480 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-03 15:57:44,480 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 15:57:44,521 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-03 15:57:44,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 107 transitions, 222 flow [2023-08-03 15:57:44,581 INFO L124 PetriNetUnfolderBase]: 10/140 cut-off events. [2023-08-03 15:57:44,581 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 15:57:44,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 140 events. 10/140 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 253 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 69. Up to 4 conditions per place. [2023-08-03 15:57:44,586 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 107 transitions, 222 flow [2023-08-03 15:57:44,591 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 102 transitions, 209 flow [2023-08-03 15:57:44,594 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:57:44,603 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 102 transitions, 209 flow [2023-08-03 15:57:44,609 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 102 transitions, 209 flow [2023-08-03 15:57:44,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 102 transitions, 209 flow [2023-08-03 15:57:44,629 INFO L124 PetriNetUnfolderBase]: 9/135 cut-off events. [2023-08-03 15:57:44,630 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:57:44,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 135 events. 9/135 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 246 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 69. Up to 4 conditions per place. [2023-08-03 15:57:44,632 INFO L119 LiptonReduction]: Number of co-enabled transitions 2028 [2023-08-03 15:57:46,681 INFO L134 LiptonReduction]: Checked pairs total: 3843 [2023-08-03 15:57:46,681 INFO L136 LiptonReduction]: Total number of compositions: 96 [2023-08-03 15:57:46,714 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:57:46,721 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;@795c3d94, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:57:46,721 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-03 15:57:46,723 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:57:46,723 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-03 15:57:46,723 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:57:46,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:57:46,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-03 15:57:46,724 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 15:57:46,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:57:46,728 INFO L85 PathProgramCache]: Analyzing trace with hash 407, now seen corresponding path program 1 times [2023-08-03 15:57:46,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:57:46,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096004926] [2023-08-03 15:57:46,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:57:46,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:57:46,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:57:46,838 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 15:57:46,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:57:46,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096004926] [2023-08-03 15:57:46,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096004926] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:57:46,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:57:46,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-03 15:57:46,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622230376] [2023-08-03 15:57:46,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:57:46,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-03 15:57:46,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:57:46,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-03 15:57:46,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-03 15:57:46,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 203 [2023-08-03 15:57:46,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 55 flow. Second operand has 2 states, 2 states have (on average 95.5) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states 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 15:57:46,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:57:46,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 203 [2023-08-03 15:57:46,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:57:46,945 INFO L124 PetriNetUnfolderBase]: 90/212 cut-off events. [2023-08-03 15:57:46,945 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:57:46,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 429 conditions, 212 events. 90/212 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 785 event pairs, 90 based on Foata normal form. 11/168 useless extension candidates. Maximal degree in co-relation 398. Up to 211 conditions per place. [2023-08-03 15:57:46,948 INFO L140 encePairwiseOnDemand]: 200/203 looper letters, 21 selfloop transitions, 0 changer transitions 0/22 dead transitions. [2023-08-03 15:57:46,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 22 transitions, 91 flow [2023-08-03 15:57:46,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-03 15:57:46,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-03 15:57:46,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 214 transitions. [2023-08-03 15:57:46,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5270935960591133 [2023-08-03 15:57:46,960 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 214 transitions. [2023-08-03 15:57:46,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 214 transitions. [2023-08-03 15:57:46,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:57:46,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 214 transitions. [2023-08-03 15:57:46,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 107.0) internal successors, (214), 2 states have internal predecessors, (214), 0 states have call successors, (0), 0 states 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 15:57:46,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:57:46,972 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:57:46,973 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 55 flow. Second operand 2 states and 214 transitions. [2023-08-03 15:57:46,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 22 transitions, 91 flow [2023-08-03 15:57:46,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 22 transitions, 91 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 15:57:46,975 INFO L231 Difference]: Finished difference. Result has 26 places, 22 transitions, 49 flow [2023-08-03 15:57:46,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=49, PETRI_PLACES=26, PETRI_TRANSITIONS=22} [2023-08-03 15:57:46,980 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -1 predicate places. [2023-08-03 15:57:46,980 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 49 flow [2023-08-03 15:57:46,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 95.5) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states 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 15:57:46,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:57:46,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 15:57:46,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 15:57:46,981 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 15:57:46,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:57:46,981 INFO L85 PathProgramCache]: Analyzing trace with hash 385051986, now seen corresponding path program 1 times [2023-08-03 15:57:46,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:57:46,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995890730] [2023-08-03 15:57:46,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:57:46,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:57:47,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:57:47,084 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 15:57:47,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:57:47,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995890730] [2023-08-03 15:57:47,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995890730] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:57:47,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:57:47,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 15:57:47,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935773616] [2023-08-03 15:57:47,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:57:47,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:57:47,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:57:47,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:57:47,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:57:47,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 203 [2023-08-03 15:57:47,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 49 flow. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:57:47,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:57:47,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 203 [2023-08-03 15:57:47,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:57:47,132 INFO L124 PetriNetUnfolderBase]: 90/212 cut-off events. [2023-08-03 15:57:47,132 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:57:47,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 212 events. 90/212 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 862 event pairs, 0 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 426. Up to 191 conditions per place. [2023-08-03 15:57:47,133 INFO L140 encePairwiseOnDemand]: 200/203 looper letters, 29 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2023-08-03 15:57:47,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 32 transitions, 131 flow [2023-08-03 15:57:47,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:57:47,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:57:47,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 305 transitions. [2023-08-03 15:57:47,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5008210180623974 [2023-08-03 15:57:47,135 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 305 transitions. [2023-08-03 15:57:47,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 305 transitions. [2023-08-03 15:57:47,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:57:47,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 305 transitions. [2023-08-03 15:57:47,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states 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 15:57:47,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states 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 15:57:47,138 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states 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 15:57:47,138 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 49 flow. Second operand 3 states and 305 transitions. [2023-08-03 15:57:47,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 32 transitions, 131 flow [2023-08-03 15:57:47,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 32 transitions, 131 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 15:57:47,139 INFO L231 Difference]: Finished difference. Result has 29 places, 22 transitions, 57 flow [2023-08-03 15:57:47,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=57, PETRI_PLACES=29, PETRI_TRANSITIONS=22} [2023-08-03 15:57:47,139 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2023-08-03 15:57:47,140 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 22 transitions, 57 flow [2023-08-03 15:57:47,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:57:47,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:57:47,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 15:57:47,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 15:57:47,140 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 15:57:47,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:57:47,141 INFO L85 PathProgramCache]: Analyzing trace with hash 385685500, now seen corresponding path program 1 times [2023-08-03 15:57:47,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:57:47,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227661962] [2023-08-03 15:57:47,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:57:47,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:57:47,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:57:47,253 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 15:57:47,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:57:47,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227661962] [2023-08-03 15:57:47,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227661962] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:57:47,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:57:47,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 15:57:47,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280368906] [2023-08-03 15:57:47,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:57:47,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:57:47,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:57:47,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:57:47,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:57:47,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 203 [2023-08-03 15:57:47,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 57 flow. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:57:47,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:57:47,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 203 [2023-08-03 15:57:47,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:57:47,315 INFO L124 PetriNetUnfolderBase]: 85/194 cut-off events. [2023-08-03 15:57:47,315 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-03 15:57:47,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 424 conditions, 194 events. 85/194 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 685 event pairs, 43 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 418. Up to 168 conditions per place. [2023-08-03 15:57:47,316 INFO L140 encePairwiseOnDemand]: 199/203 looper letters, 26 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2023-08-03 15:57:47,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 30 transitions, 136 flow [2023-08-03 15:57:47,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:57:47,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:57:47,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 300 transitions. [2023-08-03 15:57:47,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49261083743842365 [2023-08-03 15:57:47,318 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 300 transitions. [2023-08-03 15:57:47,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 300 transitions. [2023-08-03 15:57:47,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:57:47,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 300 transitions. [2023-08-03 15:57:47,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:57:47,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states 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 15:57:47,320 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states 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 15:57:47,321 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 57 flow. Second operand 3 states and 300 transitions. [2023-08-03 15:57:47,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 30 transitions, 136 flow [2023-08-03 15:57:47,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 30 transitions, 130 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 15:57:47,321 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 72 flow [2023-08-03 15:57:47,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2023-08-03 15:57:47,322 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2023-08-03 15:57:47,322 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 72 flow [2023-08-03 15:57:47,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:57:47,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:57:47,323 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 15:57:47,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 15:57:47,323 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 15:57:47,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:57:47,323 INFO L85 PathProgramCache]: Analyzing trace with hash -928645747, now seen corresponding path program 1 times [2023-08-03 15:57:47,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:57:47,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219614629] [2023-08-03 15:57:47,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:57:47,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:57:47,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:57:47,352 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 15:57:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:57:47,373 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 15:57:47,374 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 15:57:47,374 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-08-03 15:57:47,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-08-03 15:57:47,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-08-03 15:57:47,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2023-08-03 15:57:47,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2023-08-03 15:57:47,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-08-03 15:57:47,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-08-03 15:57:47,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 15:57:47,376 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-03 15:57:47,378 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 15:57:47,378 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 15:57:47,390 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-03 15:57:47,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 135 transitions, 288 flow [2023-08-03 15:57:47,418 INFO L124 PetriNetUnfolderBase]: 18/225 cut-off events. [2023-08-03 15:57:47,418 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 15:57:47,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 225 events. 18/225 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 569 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 142. Up to 8 conditions per place. [2023-08-03 15:57:47,421 INFO L82 GeneralOperation]: Start removeDead. Operand has 130 places, 135 transitions, 288 flow [2023-08-03 15:57:47,422 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 135 transitions, 288 flow [2023-08-03 15:57:47,422 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:57:47,422 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 130 places, 135 transitions, 288 flow [2023-08-03 15:57:47,423 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 130 places, 135 transitions, 288 flow [2023-08-03 15:57:47,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 135 transitions, 288 flow [2023-08-03 15:57:47,441 INFO L124 PetriNetUnfolderBase]: 18/225 cut-off events. [2023-08-03 15:57:47,441 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 15:57:47,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 225 events. 18/225 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 569 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 142. Up to 8 conditions per place. [2023-08-03 15:57:47,445 INFO L119 LiptonReduction]: Number of co-enabled transitions 5980 [2023-08-03 15:57:49,422 INFO L134 LiptonReduction]: Checked pairs total: 12423 [2023-08-03 15:57:49,422 INFO L136 LiptonReduction]: Total number of compositions: 125 [2023-08-03 15:57:49,423 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:57:49,424 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;@795c3d94, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:57:49,424 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-03 15:57:49,424 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:57:49,425 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-03 15:57:49,425 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:57:49,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:57:49,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-03 15:57:49,425 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-03 15:57:49,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:57:49,425 INFO L85 PathProgramCache]: Analyzing trace with hash 694, now seen corresponding path program 1 times [2023-08-03 15:57:49,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:57:49,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552408803] [2023-08-03 15:57:49,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:57:49,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:57:49,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:57:49,430 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 15:57:49,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:57:49,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552408803] [2023-08-03 15:57:49,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552408803] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:57:49,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:57:49,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-03 15:57:49,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077214813] [2023-08-03 15:57:49,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:57:49,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-03 15:57:49,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:57:49,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-03 15:57:49,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-03 15:57:49,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 260 [2023-08-03 15:57:49,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 98 flow. Second operand has 2 states, 2 states have (on average 117.5) internal successors, (235), 2 states have internal predecessors, (235), 0 states have call successors, (0), 0 states 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 15:57:49,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:57:49,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 260 [2023-08-03 15:57:49,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:57:49,607 INFO L124 PetriNetUnfolderBase]: 1947/3213 cut-off events. [2023-08-03 15:57:49,607 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2023-08-03 15:57:49,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6453 conditions, 3213 events. 1947/3213 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 16905 event pairs, 1936 based on Foata normal form. 131/2425 useless extension candidates. Maximal degree in co-relation 2553. Up to 3176 conditions per place. [2023-08-03 15:57:49,618 INFO L140 encePairwiseOnDemand]: 258/260 looper letters, 34 selfloop transitions, 0 changer transitions 0/38 dead transitions. [2023-08-03 15:57:49,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 38 transitions, 162 flow [2023-08-03 15:57:49,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-03 15:57:49,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-03 15:57:49,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 270 transitions. [2023-08-03 15:57:49,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5192307692307693 [2023-08-03 15:57:49,619 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 270 transitions. [2023-08-03 15:57:49,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 270 transitions. [2023-08-03 15:57:49,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:57:49,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 270 transitions. [2023-08-03 15:57:49,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 135.0) internal successors, (270), 2 states have internal predecessors, (270), 0 states have call successors, (0), 0 states 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 15:57:49,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 0 states 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 15:57:49,621 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 0 states 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 15:57:49,621 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 98 flow. Second operand 2 states and 270 transitions. [2023-08-03 15:57:49,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 38 transitions, 162 flow [2023-08-03 15:57:49,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 162 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 15:57:49,622 INFO L231 Difference]: Finished difference. Result has 42 places, 38 transitions, 94 flow [2023-08-03 15:57:49,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=94, PETRI_PLACES=42, PETRI_TRANSITIONS=38} [2023-08-03 15:57:49,623 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-08-03 15:57:49,623 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 38 transitions, 94 flow [2023-08-03 15:57:49,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 117.5) internal successors, (235), 2 states have internal predecessors, (235), 0 states have call successors, (0), 0 states 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 15:57:49,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:57:49,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 15:57:49,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 15:57:49,624 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-03 15:57:49,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:57:49,624 INFO L85 PathProgramCache]: Analyzing trace with hash 661120576, now seen corresponding path program 1 times [2023-08-03 15:57:49,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:57:49,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917873248] [2023-08-03 15:57:49,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:57:49,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:57:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:57:49,684 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 15:57:49,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:57:49,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917873248] [2023-08-03 15:57:49,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917873248] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:57:49,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:57:49,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 15:57:49,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417744012] [2023-08-03 15:57:49,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:57:49,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:57:49,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:57:49,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:57:49,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:57:49,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 260 [2023-08-03 15:57:49,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states 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 15:57:49,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:57:49,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 260 [2023-08-03 15:57:49,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:57:49,903 INFO L124 PetriNetUnfolderBase]: 2225/3652 cut-off events. [2023-08-03 15:57:49,903 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2023-08-03 15:57:49,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7336 conditions, 3652 events. 2225/3652 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 19563 event pairs, 1241 based on Foata normal form. 0/2729 useless extension candidates. Maximal degree in co-relation 7331. Up to 3257 conditions per place. [2023-08-03 15:57:49,915 INFO L140 encePairwiseOnDemand]: 250/260 looper letters, 53 selfloop transitions, 7 changer transitions 0/63 dead transitions. [2023-08-03 15:57:49,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 63 transitions, 272 flow [2023-08-03 15:57:49,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:57:49,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:57:49,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 393 transitions. [2023-08-03 15:57:49,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5038461538461538 [2023-08-03 15:57:49,916 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 393 transitions. [2023-08-03 15:57:49,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 393 transitions. [2023-08-03 15:57:49,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:57:49,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 393 transitions. [2023-08-03 15:57:49,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states 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 15:57:49,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states 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 15:57:49,919 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states 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 15:57:49,919 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 94 flow. Second operand 3 states and 393 transitions. [2023-08-03 15:57:49,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 63 transitions, 272 flow [2023-08-03 15:57:49,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 63 transitions, 272 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 15:57:49,920 INFO L231 Difference]: Finished difference. Result has 46 places, 44 transitions, 152 flow [2023-08-03 15:57:49,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=46, PETRI_TRANSITIONS=44} [2023-08-03 15:57:49,921 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-08-03 15:57:49,921 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 152 flow [2023-08-03 15:57:49,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states 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 15:57:49,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:57:49,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 15:57:49,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 15:57:49,922 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-03 15:57:49,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:57:49,922 INFO L85 PathProgramCache]: Analyzing trace with hash 660283223, now seen corresponding path program 1 times [2023-08-03 15:57:49,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:57:49,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146831540] [2023-08-03 15:57:49,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:57:49,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:57:49,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:57:49,938 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 15:57:49,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:57:49,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146831540] [2023-08-03 15:57:49,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146831540] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:57:49,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:57:49,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 15:57:49,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363836700] [2023-08-03 15:57:49,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:57:49,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:57:49,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:57:49,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:57:49,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:57:49,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 260 [2023-08-03 15:57:49,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states 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 15:57:49,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:57:49,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 260 [2023-08-03 15:57:49,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:57:50,115 INFO L124 PetriNetUnfolderBase]: 2058/3468 cut-off events. [2023-08-03 15:57:50,115 INFO L125 PetriNetUnfolderBase]: For 691/691 co-relation queries the response was YES. [2023-08-03 15:57:50,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8107 conditions, 3468 events. 2058/3468 cut-off events. For 691/691 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 18915 event pairs, 1248 based on Foata normal form. 0/2766 useless extension candidates. Maximal degree in co-relation 8100. Up to 3350 conditions per place. [2023-08-03 15:57:50,128 INFO L140 encePairwiseOnDemand]: 257/260 looper letters, 45 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-08-03 15:57:50,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 52 transitions, 264 flow [2023-08-03 15:57:50,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:57:50,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:57:50,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 382 transitions. [2023-08-03 15:57:50,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897435897435897 [2023-08-03 15:57:50,130 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 382 transitions. [2023-08-03 15:57:50,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 382 transitions. [2023-08-03 15:57:50,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:57:50,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 382 transitions. [2023-08-03 15:57:50,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states 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 15:57:50,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states 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 15:57:50,132 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states 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 15:57:50,132 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 152 flow. Second operand 3 states and 382 transitions. [2023-08-03 15:57:50,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 52 transitions, 264 flow [2023-08-03 15:57:50,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 52 transitions, 250 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 15:57:50,136 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 150 flow [2023-08-03 15:57:50,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2023-08-03 15:57:50,137 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-08-03 15:57:50,137 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 150 flow [2023-08-03 15:57:50,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states 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 15:57:50,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:57:50,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:57:50,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 15:57:50,138 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-03 15:57:50,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:57:50,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1277190641, now seen corresponding path program 1 times [2023-08-03 15:57:50,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:57:50,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997510095] [2023-08-03 15:57:50,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:57:50,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:57:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:57:50,169 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 15:57:50,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:57:50,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997510095] [2023-08-03 15:57:50,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997510095] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:57:50,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:57:50,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 15:57:50,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088687658] [2023-08-03 15:57:50,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:57:50,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 15:57:50,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:57:50,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 15:57:50,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 15:57:50,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 260 [2023-08-03 15:57:50,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states 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 15:57:50,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:57:50,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 260 [2023-08-03 15:57:50,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:57:50,474 INFO L124 PetriNetUnfolderBase]: 2751/4525 cut-off events. [2023-08-03 15:57:50,474 INFO L125 PetriNetUnfolderBase]: For 747/747 co-relation queries the response was YES. [2023-08-03 15:57:50,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10604 conditions, 4525 events. 2751/4525 cut-off events. For 747/747 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 25844 event pairs, 943 based on Foata normal form. 0/3772 useless extension candidates. Maximal degree in co-relation 10596. Up to 1777 conditions per place. [2023-08-03 15:57:50,490 INFO L140 encePairwiseOnDemand]: 250/260 looper letters, 95 selfloop transitions, 18 changer transitions 3/119 dead transitions. [2023-08-03 15:57:50,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 119 transitions, 603 flow [2023-08-03 15:57:50,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 15:57:50,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 15:57:50,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 650 transitions. [2023-08-03 15:57:50,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-03 15:57:50,491 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 650 transitions. [2023-08-03 15:57:50,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 650 transitions. [2023-08-03 15:57:50,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:57:50,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 650 transitions. [2023-08-03 15:57:50,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 130.0) internal successors, (650), 5 states have internal predecessors, (650), 0 states have call successors, (0), 0 states 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 15:57:50,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 260.0) internal successors, (1560), 6 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states 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 15:57:50,494 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 260.0) internal successors, (1560), 6 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states 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 15:57:50,494 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 150 flow. Second operand 5 states and 650 transitions. [2023-08-03 15:57:50,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 119 transitions, 603 flow [2023-08-03 15:57:50,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 119 transitions, 599 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:57:50,497 INFO L231 Difference]: Finished difference. Result has 53 places, 59 transitions, 287 flow [2023-08-03 15:57:50,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=287, PETRI_PLACES=53, PETRI_TRANSITIONS=59} [2023-08-03 15:57:50,497 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2023-08-03 15:57:50,497 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 59 transitions, 287 flow [2023-08-03 15:57:50,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states 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 15:57:50,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:57:50,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:57:50,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-03 15:57:50,498 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-03 15:57:50,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:57:50,498 INFO L85 PathProgramCache]: Analyzing trace with hash -871687199, now seen corresponding path program 1 times [2023-08-03 15:57:50,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:57:50,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266750681] [2023-08-03 15:57:50,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:57:50,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:57:50,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:57:50,522 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 15:57:50,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:57:50,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266750681] [2023-08-03 15:57:50,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266750681] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:57:50,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91259905] [2023-08-03 15:57:50,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:57:50,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:57:50,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:57:50,526 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 15:57:50,555 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 15:57:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:57:50,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 15:57:50,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:57:50,650 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 15:57:50,650 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 15:57:50,664 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 15:57:50,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91259905] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 15:57:50,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 15:57:50,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 15:57:50,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006621007] [2023-08-03 15:57:50,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 15:57:50,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:57:50,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:57:50,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:57:50,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 15:57:50,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 260 [2023-08-03 15:57:50,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 59 transitions, 287 flow. Second operand has 5 states, 5 states have (on average 114.4) internal successors, (572), 5 states have internal predecessors, (572), 0 states have call successors, (0), 0 states 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 15:57:50,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:57:50,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 260 [2023-08-03 15:57:50,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:57:50,954 INFO L124 PetriNetUnfolderBase]: 2510/4173 cut-off events. [2023-08-03 15:57:50,954 INFO L125 PetriNetUnfolderBase]: For 4210/4303 co-relation queries the response was YES. [2023-08-03 15:57:50,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12178 conditions, 4173 events. 2510/4173 cut-off events. For 4210/4303 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 23654 event pairs, 786 based on Foata normal form. 77/3818 useless extension candidates. Maximal degree in co-relation 12167. Up to 3710 conditions per place. [2023-08-03 15:57:50,969 INFO L140 encePairwiseOnDemand]: 256/260 looper letters, 81 selfloop transitions, 4 changer transitions 0/91 dead transitions. [2023-08-03 15:57:50,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 91 transitions, 608 flow [2023-08-03 15:57:50,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 15:57:50,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 15:57:50,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 507 transitions. [2023-08-03 15:57:50,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875 [2023-08-03 15:57:50,971 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 507 transitions. [2023-08-03 15:57:50,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 507 transitions. [2023-08-03 15:57:50,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:57:50,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 507 transitions. [2023-08-03 15:57:50,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 126.75) internal successors, (507), 4 states have internal predecessors, (507), 0 states have call successors, (0), 0 states 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 15:57:50,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 260.0) internal successors, (1300), 5 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 15:57:50,973 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 260.0) internal successors, (1300), 5 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 15:57:50,973 INFO L175 Difference]: Start difference. First operand has 53 places, 59 transitions, 287 flow. Second operand 4 states and 507 transitions. [2023-08-03 15:57:50,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 91 transitions, 608 flow [2023-08-03 15:57:50,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 91 transitions, 608 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 15:57:50,977 INFO L231 Difference]: Finished difference. Result has 58 places, 60 transitions, 307 flow [2023-08-03 15:57:50,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=307, PETRI_PLACES=58, PETRI_TRANSITIONS=60} [2023-08-03 15:57:50,978 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 16 predicate places. [2023-08-03 15:57:50,978 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 60 transitions, 307 flow [2023-08-03 15:57:50,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 114.4) internal successors, (572), 5 states have internal predecessors, (572), 0 states have call successors, (0), 0 states 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 15:57:50,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:57:50,978 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 15:57:50,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-03 15:57:51,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:57:51,185 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-03 15:57:51,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:57:51,185 INFO L85 PathProgramCache]: Analyzing trace with hash 628436942, now seen corresponding path program 1 times [2023-08-03 15:57:51,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:57:51,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942999833] [2023-08-03 15:57:51,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:57:51,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:57:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:57:51,240 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 15:57:51,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:57:51,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942999833] [2023-08-03 15:57:51,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942999833] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:57:51,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446123644] [2023-08-03 15:57:51,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:57:51,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:57:51,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:57:51,242 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 15:57:51,271 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 15:57:51,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:57:51,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 15:57:51,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:57:51,319 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 15:57:51,319 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 15:57:51,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446123644] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:57:51,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 15:57:51,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 15:57:51,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863481924] [2023-08-03 15:57:51,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:57:51,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:57:51,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:57:51,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:57:51,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 15:57:51,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 260 [2023-08-03 15:57:51,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 60 transitions, 307 flow. Second operand has 5 states, 5 states have (on average 113.6) internal successors, (568), 5 states have internal predecessors, (568), 0 states have call successors, (0), 0 states 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 15:57:51,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:57:51,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 260 [2023-08-03 15:57:51,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:57:51,570 INFO L124 PetriNetUnfolderBase]: 2392/3972 cut-off events. [2023-08-03 15:57:51,570 INFO L125 PetriNetUnfolderBase]: For 4516/4603 co-relation queries the response was YES. [2023-08-03 15:57:51,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11882 conditions, 3972 events. 2392/3972 cut-off events. For 4516/4603 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 22247 event pairs, 715 based on Foata normal form. 137/3682 useless extension candidates. Maximal degree in co-relation 11869. Up to 3709 conditions per place. [2023-08-03 15:57:51,587 INFO L140 encePairwiseOnDemand]: 257/260 looper letters, 81 selfloop transitions, 3 changer transitions 0/89 dead transitions. [2023-08-03 15:57:51,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 89 transitions, 614 flow [2023-08-03 15:57:51,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 15:57:51,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 15:57:51,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 618 transitions. [2023-08-03 15:57:51,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4753846153846154 [2023-08-03 15:57:51,589 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 618 transitions. [2023-08-03 15:57:51,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 618 transitions. [2023-08-03 15:57:51,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:57:51,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 618 transitions. [2023-08-03 15:57:51,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 123.6) internal successors, (618), 5 states have internal predecessors, (618), 0 states have call successors, (0), 0 states 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 15:57:51,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 260.0) internal successors, (1560), 6 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states 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 15:57:51,591 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 260.0) internal successors, (1560), 6 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states 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 15:57:51,591 INFO L175 Difference]: Start difference. First operand has 58 places, 60 transitions, 307 flow. Second operand 5 states and 618 transitions. [2023-08-03 15:57:51,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 89 transitions, 614 flow [2023-08-03 15:57:51,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 89 transitions, 604 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-03 15:57:51,596 INFO L231 Difference]: Finished difference. Result has 57 places, 58 transitions, 291 flow [2023-08-03 15:57:51,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=291, PETRI_PLACES=57, PETRI_TRANSITIONS=58} [2023-08-03 15:57:51,597 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 15 predicate places. [2023-08-03 15:57:51,597 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 58 transitions, 291 flow [2023-08-03 15:57:51,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.6) internal successors, (568), 5 states have internal predecessors, (568), 0 states have call successors, (0), 0 states 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 15:57:51,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:57:51,598 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:57:51,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 15:57:51,801 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,SelfDestructingSolverStorable9 [2023-08-03 15:57:51,802 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-03 15:57:51,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:57:51,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1182597503, now seen corresponding path program 1 times [2023-08-03 15:57:51,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:57:51,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749032584] [2023-08-03 15:57:51,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:57:51,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:57:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:57:51,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:57:51,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:57:51,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749032584] [2023-08-03 15:57:51,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749032584] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:57:51,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:57:51,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 15:57:51,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638936643] [2023-08-03 15:57:51,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:57:51,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:57:51,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:57:51,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:57:51,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:57:51,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 260 [2023-08-03 15:57:51,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 58 transitions, 291 flow. Second operand has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states 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 15:57:51,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:57:51,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 260 [2023-08-03 15:57:51,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:57:51,919 INFO L124 PetriNetUnfolderBase]: 158/432 cut-off events. [2023-08-03 15:57:51,919 INFO L125 PetriNetUnfolderBase]: For 453/454 co-relation queries the response was YES. [2023-08-03 15:57:51,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1232 conditions, 432 events. 158/432 cut-off events. For 453/454 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1995 event pairs, 20 based on Foata normal form. 104/475 useless extension candidates. Maximal degree in co-relation 1220. Up to 331 conditions per place. [2023-08-03 15:57:51,920 INFO L140 encePairwiseOnDemand]: 254/260 looper letters, 40 selfloop transitions, 6 changer transitions 1/50 dead transitions. [2023-08-03 15:57:51,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 50 transitions, 317 flow [2023-08-03 15:57:51,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:57:51,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:57:51,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 373 transitions. [2023-08-03 15:57:51,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782051282051282 [2023-08-03 15:57:51,922 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 373 transitions. [2023-08-03 15:57:51,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 373 transitions. [2023-08-03 15:57:51,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:57:51,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 373 transitions. [2023-08-03 15:57:51,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states 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 15:57:51,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states 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 15:57:51,923 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states 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 15:57:51,924 INFO L175 Difference]: Start difference. First operand has 57 places, 58 transitions, 291 flow. Second operand 3 states and 373 transitions. [2023-08-03 15:57:51,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 50 transitions, 317 flow [2023-08-03 15:57:51,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 50 transitions, 280 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-08-03 15:57:51,925 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 159 flow [2023-08-03 15:57:51,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2023-08-03 15:57:51,926 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2023-08-03 15:57:51,926 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 159 flow [2023-08-03 15:57:51,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states 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 15:57:51,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:57:51,926 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:57:51,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-03 15:57:51,926 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-03 15:57:51,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:57:51,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1663304020, now seen corresponding path program 1 times [2023-08-03 15:57:51,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:57:51,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046086249] [2023-08-03 15:57:51,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:57:51,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:57:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:57:52,001 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 15:57:52,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:57:52,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046086249] [2023-08-03 15:57:52,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046086249] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:57:52,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:57:52,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 15:57:52,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215153258] [2023-08-03 15:57:52,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:57:52,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:57:52,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:57:52,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:57:52,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 15:57:52,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 260 [2023-08-03 15:57:52,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 159 flow. Second operand has 5 states, 5 states have (on average 108.8) internal successors, (544), 5 states have internal predecessors, (544), 0 states have call successors, (0), 0 states 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 15:57:52,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:57:52,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 260 [2023-08-03 15:57:52,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:57:52,132 INFO L124 PetriNetUnfolderBase]: 162/436 cut-off events. [2023-08-03 15:57:52,133 INFO L125 PetriNetUnfolderBase]: For 269/269 co-relation queries the response was YES. [2023-08-03 15:57:52,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1196 conditions, 436 events. 162/436 cut-off events. For 269/269 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1834 event pairs, 107 based on Foata normal form. 0/388 useless extension candidates. Maximal degree in co-relation 1187. Up to 360 conditions per place. [2023-08-03 15:57:52,134 INFO L140 encePairwiseOnDemand]: 252/260 looper letters, 45 selfloop transitions, 7 changer transitions 2/56 dead transitions. [2023-08-03 15:57:52,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 56 transitions, 323 flow [2023-08-03 15:57:52,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 15:57:52,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 15:57:52,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 586 transitions. [2023-08-03 15:57:52,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45076923076923076 [2023-08-03 15:57:52,135 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 586 transitions. [2023-08-03 15:57:52,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 586 transitions. [2023-08-03 15:57:52,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:57:52,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 586 transitions. [2023-08-03 15:57:52,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 117.2) internal successors, (586), 5 states have internal predecessors, (586), 0 states have call successors, (0), 0 states 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 15:57:52,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 260.0) internal successors, (1560), 6 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states 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 15:57:52,138 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 260.0) internal successors, (1560), 6 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states 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 15:57:52,138 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 159 flow. Second operand 5 states and 586 transitions. [2023-08-03 15:57:52,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 56 transitions, 323 flow [2023-08-03 15:57:52,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 56 transitions, 314 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:57:52,139 INFO L231 Difference]: Finished difference. Result has 55 places, 42 transitions, 184 flow [2023-08-03 15:57:52,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=184, PETRI_PLACES=55, PETRI_TRANSITIONS=42} [2023-08-03 15:57:52,140 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 13 predicate places. [2023-08-03 15:57:52,140 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 42 transitions, 184 flow [2023-08-03 15:57:52,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.8) internal successors, (544), 5 states have internal predecessors, (544), 0 states have call successors, (0), 0 states 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 15:57:52,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:57:52,140 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:57:52,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-03 15:57:52,141 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-03 15:57:52,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:57:52,142 INFO L85 PathProgramCache]: Analyzing trace with hash 382265010, now seen corresponding path program 1 times [2023-08-03 15:57:52,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:57:52,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652479273] [2023-08-03 15:57:52,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:57:52,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:57:52,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:57:52,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 15:57:52,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:57:52,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652479273] [2023-08-03 15:57:52,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652479273] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:57:52,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435847122] [2023-08-03 15:57:52,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:57:52,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:57:52,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:57:52,254 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 15:57:52,284 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 15:57:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:57:52,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-03 15:57:52,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:57:52,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 15:57:52,389 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 15:57:52,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435847122] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:57:52,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 15:57:52,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [2] total 5 [2023-08-03 15:57:52,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724092981] [2023-08-03 15:57:52,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:57:52,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 15:57:52,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:57:52,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 15:57:52,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-03 15:57:52,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 260 [2023-08-03 15:57:52,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 184 flow. Second operand has 6 states, 6 states have (on average 108.16666666666667) internal successors, (649), 6 states have internal predecessors, (649), 0 states have call successors, (0), 0 states 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 15:57:52,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:57:52,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 260 [2023-08-03 15:57:52,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:57:52,558 INFO L124 PetriNetUnfolderBase]: 179/490 cut-off events. [2023-08-03 15:57:52,558 INFO L125 PetriNetUnfolderBase]: For 355/355 co-relation queries the response was YES. [2023-08-03 15:57:52,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1359 conditions, 490 events. 179/490 cut-off events. For 355/355 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2263 event pairs, 69 based on Foata normal form. 9/442 useless extension candidates. Maximal degree in co-relation 1347. Up to 139 conditions per place. [2023-08-03 15:57:52,559 INFO L140 encePairwiseOnDemand]: 252/260 looper letters, 64 selfloop transitions, 10 changer transitions 13/89 dead transitions. [2023-08-03 15:57:52,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 89 transitions, 534 flow [2023-08-03 15:57:52,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 15:57:52,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 15:57:52,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 720 transitions. [2023-08-03 15:57:52,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2023-08-03 15:57:52,561 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 720 transitions. [2023-08-03 15:57:52,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 720 transitions. [2023-08-03 15:57:52,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:57:52,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 720 transitions. [2023-08-03 15:57:52,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states 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 15:57:52,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states 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 15:57:52,564 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states 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 15:57:52,564 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 184 flow. Second operand 6 states and 720 transitions. [2023-08-03 15:57:52,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 89 transitions, 534 flow [2023-08-03 15:57:52,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 89 transitions, 534 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 15:57:52,566 INFO L231 Difference]: Finished difference. Result has 61 places, 43 transitions, 218 flow [2023-08-03 15:57:52,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=218, PETRI_PLACES=61, PETRI_TRANSITIONS=43} [2023-08-03 15:57:52,566 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 19 predicate places. [2023-08-03 15:57:52,567 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 43 transitions, 218 flow [2023-08-03 15:57:52,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 108.16666666666667) internal successors, (649), 6 states have internal predecessors, (649), 0 states have call successors, (0), 0 states 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 15:57:52,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:57:52,567 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:57:52,573 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 15:57:52,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:57:52,771 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-03 15:57:52,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:57:52,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1209626761, now seen corresponding path program 1 times [2023-08-03 15:57:52,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:57:52,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484398240] [2023-08-03 15:57:52,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:57:52,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:57:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:57:52,840 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 15:57:52,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:57:52,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484398240] [2023-08-03 15:57:52,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484398240] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:57:52,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:57:52,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 15:57:52,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338639468] [2023-08-03 15:57:52,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:57:52,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 15:57:52,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:57:52,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 15:57:52,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 15:57:52,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 260 [2023-08-03 15:57:52,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 43 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 0 states have call successors, (0), 0 states 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 15:57:52,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:57:52,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 260 [2023-08-03 15:57:52,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:57:52,969 INFO L124 PetriNetUnfolderBase]: 213/625 cut-off events. [2023-08-03 15:57:52,969 INFO L125 PetriNetUnfolderBase]: For 824/824 co-relation queries the response was YES. [2023-08-03 15:57:52,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1814 conditions, 625 events. 213/625 cut-off events. For 824/824 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3253 event pairs, 159 based on Foata normal form. 2/550 useless extension candidates. Maximal degree in co-relation 1800. Up to 370 conditions per place. [2023-08-03 15:57:52,971 INFO L140 encePairwiseOnDemand]: 252/260 looper letters, 68 selfloop transitions, 8 changer transitions 11/89 dead transitions. [2023-08-03 15:57:52,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 89 transitions, 589 flow [2023-08-03 15:57:52,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 15:57:52,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 15:57:52,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 622 transitions. [2023-08-03 15:57:52,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47846153846153844 [2023-08-03 15:57:52,972 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 622 transitions. [2023-08-03 15:57:52,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 622 transitions. [2023-08-03 15:57:52,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:57:52,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 622 transitions. [2023-08-03 15:57:52,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 124.4) internal successors, (622), 5 states have internal predecessors, (622), 0 states have call successors, (0), 0 states 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 15:57:52,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 260.0) internal successors, (1560), 6 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states 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 15:57:52,975 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 260.0) internal successors, (1560), 6 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states 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 15:57:52,975 INFO L175 Difference]: Start difference. First operand has 61 places, 43 transitions, 218 flow. Second operand 5 states and 622 transitions. [2023-08-03 15:57:52,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 89 transitions, 589 flow [2023-08-03 15:57:52,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 89 transitions, 563 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-03 15:57:52,977 INFO L231 Difference]: Finished difference. Result has 66 places, 47 transitions, 266 flow [2023-08-03 15:57:52,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=266, PETRI_PLACES=66, PETRI_TRANSITIONS=47} [2023-08-03 15:57:52,978 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2023-08-03 15:57:52,978 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 47 transitions, 266 flow [2023-08-03 15:57:52,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 0 states have call successors, (0), 0 states 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 15:57:52,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:57:52,978 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:57:52,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-03 15:57:52,978 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-03 15:57:52,978 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:57:52,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1148626082, now seen corresponding path program 1 times [2023-08-03 15:57:52,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:57:52,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840418407] [2023-08-03 15:57:52,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:57:52,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:57:52,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:57:53,060 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 15:57:53,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:57:53,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840418407] [2023-08-03 15:57:53,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840418407] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:57:53,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:57:53,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 15:57:53,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754589930] [2023-08-03 15:57:53,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:57:53,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 15:57:53,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:57:53,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 15:57:53,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-03 15:57:53,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 260 [2023-08-03 15:57:53,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 47 transitions, 266 flow. Second operand has 6 states, 6 states have (on average 107.33333333333333) internal successors, (644), 6 states have internal predecessors, (644), 0 states have call successors, (0), 0 states 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 15:57:53,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:57:53,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 260 [2023-08-03 15:57:53,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:57:53,276 INFO L124 PetriNetUnfolderBase]: 100/348 cut-off events. [2023-08-03 15:57:53,276 INFO L125 PetriNetUnfolderBase]: For 392/392 co-relation queries the response was YES. [2023-08-03 15:57:53,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1026 conditions, 348 events. 100/348 cut-off events. For 392/392 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1494 event pairs, 57 based on Foata normal form. 6/319 useless extension candidates. Maximal degree in co-relation 1008. Up to 271 conditions per place. [2023-08-03 15:57:53,277 INFO L140 encePairwiseOnDemand]: 250/260 looper letters, 48 selfloop transitions, 10 changer transitions 0/60 dead transitions. [2023-08-03 15:57:53,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 60 transitions, 431 flow [2023-08-03 15:57:53,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 15:57:53,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 15:57:53,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 681 transitions. [2023-08-03 15:57:53,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43653846153846154 [2023-08-03 15:57:53,287 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 681 transitions. [2023-08-03 15:57:53,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 681 transitions. [2023-08-03 15:57:53,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:57:53,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 681 transitions. [2023-08-03 15:57:53,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 113.5) internal successors, (681), 6 states have internal predecessors, (681), 0 states have call successors, (0), 0 states 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 15:57:53,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states 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 15:57:53,290 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states 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 15:57:53,290 INFO L175 Difference]: Start difference. First operand has 66 places, 47 transitions, 266 flow. Second operand 6 states and 681 transitions. [2023-08-03 15:57:53,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 60 transitions, 431 flow [2023-08-03 15:57:53,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 60 transitions, 428 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:57:53,292 INFO L231 Difference]: Finished difference. Result has 72 places, 48 transitions, 301 flow [2023-08-03 15:57:53,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=301, PETRI_PLACES=72, PETRI_TRANSITIONS=48} [2023-08-03 15:57:53,292 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 30 predicate places. [2023-08-03 15:57:53,292 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 48 transitions, 301 flow [2023-08-03 15:57:53,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.33333333333333) internal successors, (644), 6 states have internal predecessors, (644), 0 states have call successors, (0), 0 states 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 15:57:53,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:57:53,293 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:57:53,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-03 15:57:53,293 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-03 15:57:53,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:57:53,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1305294283, now seen corresponding path program 1 times [2023-08-03 15:57:53,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:57:53,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119867308] [2023-08-03 15:57:53,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:57:53,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:57:53,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:57:53,389 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-03 15:57:53,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:57:53,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119867308] [2023-08-03 15:57:53,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119867308] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:57:53,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20847612] [2023-08-03 15:57:53,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:57:53,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:57:53,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:57:53,391 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 15:57:53,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 15:57:53,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:57:53,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-03 15:57:53,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:57:53,499 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 15:57:53,499 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 15:57:53,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20847612] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:57:53,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 15:57:53,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 7 [2023-08-03 15:57:53,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894101871] [2023-08-03 15:57:53,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:57:53,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-03 15:57:53,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:57:53,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-03 15:57:53,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-03 15:57:53,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 260 [2023-08-03 15:57:53,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 48 transitions, 301 flow. Second operand has 8 states, 8 states have (on average 105.0) internal successors, (840), 8 states have internal predecessors, (840), 0 states have call successors, (0), 0 states 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 15:57:53,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:57:53,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 260 [2023-08-03 15:57:53,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:57:53,756 INFO L124 PetriNetUnfolderBase]: 100/345 cut-off events. [2023-08-03 15:57:53,756 INFO L125 PetriNetUnfolderBase]: For 493/493 co-relation queries the response was YES. [2023-08-03 15:57:53,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1073 conditions, 345 events. 100/345 cut-off events. For 493/493 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1471 event pairs, 64 based on Foata normal form. 2/312 useless extension candidates. Maximal degree in co-relation 1053. Up to 125 conditions per place. [2023-08-03 15:57:53,757 INFO L140 encePairwiseOnDemand]: 250/260 looper letters, 62 selfloop transitions, 13 changer transitions 7/84 dead transitions. [2023-08-03 15:57:53,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 84 transitions, 611 flow [2023-08-03 15:57:53,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-03 15:57:53,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-03 15:57:53,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1108 transitions. [2023-08-03 15:57:53,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42615384615384616 [2023-08-03 15:57:53,760 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1108 transitions. [2023-08-03 15:57:53,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1108 transitions. [2023-08-03 15:57:53,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:57:53,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1108 transitions. [2023-08-03 15:57:53,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 110.8) internal successors, (1108), 10 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states 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 15:57:53,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 260.0) internal successors, (2860), 11 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states 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 15:57:53,764 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 260.0) internal successors, (2860), 11 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states 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 15:57:53,764 INFO L175 Difference]: Start difference. First operand has 72 places, 48 transitions, 301 flow. Second operand 10 states and 1108 transitions. [2023-08-03 15:57:53,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 84 transitions, 611 flow [2023-08-03 15:57:53,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 84 transitions, 601 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 15:57:53,766 INFO L231 Difference]: Finished difference. Result has 80 places, 48 transitions, 307 flow [2023-08-03 15:57:53,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=307, PETRI_PLACES=80, PETRI_TRANSITIONS=48} [2023-08-03 15:57:53,767 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 38 predicate places. [2023-08-03 15:57:53,767 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 48 transitions, 307 flow [2023-08-03 15:57:53,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 105.0) internal successors, (840), 8 states have internal predecessors, (840), 0 states have call successors, (0), 0 states 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 15:57:53,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:57:53,767 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:57:53,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-03 15:57:53,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-03 15:57:53,971 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-03 15:57:53,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:57:53,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1948429144, now seen corresponding path program 1 times [2023-08-03 15:57:53,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:57:53,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972012700] [2023-08-03 15:57:53,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:57:53,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:57:53,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:57:54,075 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 15:57:54,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:57:54,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972012700] [2023-08-03 15:57:54,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972012700] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:57:54,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:57:54,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 15:57:54,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349132671] [2023-08-03 15:57:54,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:57:54,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 15:57:54,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:57:54,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 15:57:54,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-03 15:57:54,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 260 [2023-08-03 15:57:54,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 48 transitions, 307 flow. Second operand has 6 states, 6 states have (on average 107.5) internal successors, (645), 6 states have internal predecessors, (645), 0 states have call successors, (0), 0 states 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 15:57:54,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:57:54,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 260 [2023-08-03 15:57:54,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:57:54,257 INFO L124 PetriNetUnfolderBase]: 94/305 cut-off events. [2023-08-03 15:57:54,257 INFO L125 PetriNetUnfolderBase]: For 506/506 co-relation queries the response was YES. [2023-08-03 15:57:54,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 975 conditions, 305 events. 94/305 cut-off events. For 506/506 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1214 event pairs, 66 based on Foata normal form. 1/275 useless extension candidates. Maximal degree in co-relation 953. Up to 199 conditions per place. [2023-08-03 15:57:54,258 INFO L140 encePairwiseOnDemand]: 251/260 looper letters, 58 selfloop transitions, 11 changer transitions 2/73 dead transitions. [2023-08-03 15:57:54,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 73 transitions, 553 flow [2023-08-03 15:57:54,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-03 15:57:54,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-03 15:57:54,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1010 transitions. [2023-08-03 15:57:54,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43162393162393164 [2023-08-03 15:57:54,260 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1010 transitions. [2023-08-03 15:57:54,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1010 transitions. [2023-08-03 15:57:54,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:57:54,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1010 transitions. [2023-08-03 15:57:54,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 112.22222222222223) internal successors, (1010), 9 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states 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 15:57:54,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 260.0) internal successors, (2600), 10 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 15:57:54,264 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 260.0) internal successors, (2600), 10 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 15:57:54,264 INFO L175 Difference]: Start difference. First operand has 80 places, 48 transitions, 307 flow. Second operand 9 states and 1010 transitions. [2023-08-03 15:57:54,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 73 transitions, 553 flow [2023-08-03 15:57:54,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 73 transitions, 513 flow, removed 3 selfloop flow, removed 10 redundant places. [2023-08-03 15:57:54,266 INFO L231 Difference]: Finished difference. Result has 80 places, 49 transitions, 305 flow [2023-08-03 15:57:54,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=305, PETRI_PLACES=80, PETRI_TRANSITIONS=49} [2023-08-03 15:57:54,267 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 38 predicate places. [2023-08-03 15:57:54,267 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 49 transitions, 305 flow [2023-08-03 15:57:54,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.5) internal successors, (645), 6 states have internal predecessors, (645), 0 states have call successors, (0), 0 states 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 15:57:54,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:57:54,267 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] [2023-08-03 15:57:54,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-03 15:57:54,268 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-03 15:57:54,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:57:54,268 INFO L85 PathProgramCache]: Analyzing trace with hash 145276831, now seen corresponding path program 1 times [2023-08-03 15:57:54,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:57:54,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293292235] [2023-08-03 15:57:54,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:57:54,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:57:54,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:57:54,416 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-03 15:57:54,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:57:54,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293292235] [2023-08-03 15:57:54,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293292235] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:57:54,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555752725] [2023-08-03 15:57:54,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:57:54,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:57:54,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:57:54,441 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 15:57:54,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-03 15:57:54,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:57:54,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-03 15:57:54,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:57:54,671 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-03 15:57:54,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 15:57:54,745 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-03 15:57:54,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555752725] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 15:57:54,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 15:57:54,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 9 [2023-08-03 15:57:54,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213836183] [2023-08-03 15:57:54,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 15:57:54,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-03 15:57:54,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:57:54,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-03 15:57:54,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-08-03 15:57:54,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 260 [2023-08-03 15:57:54,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 49 transitions, 305 flow. Second operand has 11 states, 11 states have (on average 103.45454545454545) internal successors, (1138), 11 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states 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 15:57:54,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:57:54,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 260 [2023-08-03 15:57:54,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:57:55,073 INFO L124 PetriNetUnfolderBase]: 87/268 cut-off events. [2023-08-03 15:57:55,073 INFO L125 PetriNetUnfolderBase]: For 408/408 co-relation queries the response was YES. [2023-08-03 15:57:55,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 864 conditions, 268 events. 87/268 cut-off events. For 408/408 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1072 event pairs, 34 based on Foata normal form. 7/250 useless extension candidates. Maximal degree in co-relation 842. Up to 79 conditions per place. [2023-08-03 15:57:55,074 INFO L140 encePairwiseOnDemand]: 248/260 looper letters, 54 selfloop transitions, 13 changer transitions 13/82 dead transitions. [2023-08-03 15:57:55,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 82 transitions, 586 flow [2023-08-03 15:57:55,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-03 15:57:55,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-03 15:57:55,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1388 transitions. [2023-08-03 15:57:55,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4106508875739645 [2023-08-03 15:57:55,077 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1388 transitions. [2023-08-03 15:57:55,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1388 transitions. [2023-08-03 15:57:55,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:57:55,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1388 transitions. [2023-08-03 15:57:55,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 106.76923076923077) internal successors, (1388), 13 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states 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 15:57:55,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 260.0) internal successors, (3640), 14 states have internal predecessors, (3640), 0 states have call successors, (0), 0 states 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 15:57:55,083 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 260.0) internal successors, (3640), 14 states have internal predecessors, (3640), 0 states have call successors, (0), 0 states 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 15:57:55,083 INFO L175 Difference]: Start difference. First operand has 80 places, 49 transitions, 305 flow. Second operand 13 states and 1388 transitions. [2023-08-03 15:57:55,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 82 transitions, 586 flow [2023-08-03 15:57:55,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 82 transitions, 560 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-08-03 15:57:55,086 INFO L231 Difference]: Finished difference. Result has 86 places, 44 transitions, 275 flow [2023-08-03 15:57:55,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=275, PETRI_PLACES=86, PETRI_TRANSITIONS=44} [2023-08-03 15:57:55,086 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 44 predicate places. [2023-08-03 15:57:55,086 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 44 transitions, 275 flow [2023-08-03 15:57:55,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 103.45454545454545) internal successors, (1138), 11 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states 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 15:57:55,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:57:55,087 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] [2023-08-03 15:57:55,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-03 15:57:55,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-03 15:57:55,313 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-03 15:57:55,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:57:55,314 INFO L85 PathProgramCache]: Analyzing trace with hash 655341866, now seen corresponding path program 1 times [2023-08-03 15:57:55,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:57:55,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426405008] [2023-08-03 15:57:55,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:57:55,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:57:55,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:57:55,432 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 15:57:55,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:57:55,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426405008] [2023-08-03 15:57:55,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426405008] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:57:55,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:57:55,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-03 15:57:55,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604647203] [2023-08-03 15:57:55,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:57:55,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-03 15:57:55,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:57:55,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-03 15:57:55,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-03 15:57:55,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 260 [2023-08-03 15:57:55,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 44 transitions, 275 flow. Second operand has 7 states, 7 states have (on average 105.85714285714286) internal successors, (741), 7 states have internal predecessors, (741), 0 states have call successors, (0), 0 states 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 15:57:55,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:57:55,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 260 [2023-08-03 15:57:55,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:57:55,638 INFO L124 PetriNetUnfolderBase]: 63/202 cut-off events. [2023-08-03 15:57:55,639 INFO L125 PetriNetUnfolderBase]: For 450/450 co-relation queries the response was YES. [2023-08-03 15:57:55,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 684 conditions, 202 events. 63/202 cut-off events. For 450/450 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 710 event pairs, 23 based on Foata normal form. 14/201 useless extension candidates. Maximal degree in co-relation 661. Up to 66 conditions per place. [2023-08-03 15:57:55,639 INFO L140 encePairwiseOnDemand]: 250/260 looper letters, 24 selfloop transitions, 2 changer transitions 37/64 dead transitions. [2023-08-03 15:57:55,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 64 transitions, 472 flow [2023-08-03 15:57:55,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-03 15:57:55,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-03 15:57:55,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1191 transitions. [2023-08-03 15:57:55,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41643356643356644 [2023-08-03 15:57:55,642 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1191 transitions. [2023-08-03 15:57:55,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1191 transitions. [2023-08-03 15:57:55,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:57:55,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1191 transitions. [2023-08-03 15:57:55,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 108.27272727272727) internal successors, (1191), 11 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states 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 15:57:55,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 260.0) internal successors, (3120), 12 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 15:57:55,656 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 260.0) internal successors, (3120), 12 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 15:57:55,656 INFO L175 Difference]: Start difference. First operand has 86 places, 44 transitions, 275 flow. Second operand 11 states and 1191 transitions. [2023-08-03 15:57:55,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 64 transitions, 472 flow [2023-08-03 15:57:55,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 64 transitions, 426 flow, removed 4 selfloop flow, removed 12 redundant places. [2023-08-03 15:57:55,658 INFO L231 Difference]: Finished difference. Result has 78 places, 23 transitions, 127 flow [2023-08-03 15:57:55,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=127, PETRI_PLACES=78, PETRI_TRANSITIONS=23} [2023-08-03 15:57:55,659 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 36 predicate places. [2023-08-03 15:57:55,659 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 23 transitions, 127 flow [2023-08-03 15:57:55,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 105.85714285714286) internal successors, (741), 7 states have internal predecessors, (741), 0 states have call successors, (0), 0 states 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 15:57:55,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:57:55,659 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 15:57:55,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-03 15:57:55,659 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-03 15:57:55,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:57:55,660 INFO L85 PathProgramCache]: Analyzing trace with hash -890253513, now seen corresponding path program 1 times [2023-08-03 15:57:55,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:57:55,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038422765] [2023-08-03 15:57:55,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:57:55,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:57:55,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:57:55,773 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-03 15:57:55,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:57:55,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038422765] [2023-08-03 15:57:55,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038422765] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:57:55,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134031408] [2023-08-03 15:57:55,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:57:55,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:57:55,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:57:55,775 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 15:57:55,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-03 15:57:55,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:57:55,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-03 15:57:55,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:57:55,907 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-03 15:57:55,907 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 15:57:55,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134031408] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:57:55,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 15:57:55,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 9 [2023-08-03 15:57:55,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070119880] [2023-08-03 15:57:55,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:57:55,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-03 15:57:55,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:57:55,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-03 15:57:55,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-08-03 15:57:56,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 260 [2023-08-03 15:57:56,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 23 transitions, 127 flow. Second operand has 9 states, 9 states have (on average 99.33333333333333) internal successors, (894), 9 states have internal predecessors, (894), 0 states have call successors, (0), 0 states 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 15:57:56,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:57:56,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 260 [2023-08-03 15:57:56,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:57:56,179 INFO L124 PetriNetUnfolderBase]: 31/90 cut-off events. [2023-08-03 15:57:56,179 INFO L125 PetriNetUnfolderBase]: For 127/127 co-relation queries the response was YES. [2023-08-03 15:57:56,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 90 events. 31/90 cut-off events. For 127/127 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 233 event pairs, 5 based on Foata normal form. 1/91 useless extension candidates. Maximal degree in co-relation 328. Up to 22 conditions per place. [2023-08-03 15:57:56,180 INFO L140 encePairwiseOnDemand]: 249/260 looper letters, 0 selfloop transitions, 0 changer transitions 41/41 dead transitions. [2023-08-03 15:57:56,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 41 transitions, 305 flow [2023-08-03 15:57:56,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-03 15:57:56,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-03 15:57:56,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1201 transitions. [2023-08-03 15:57:56,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38493589743589746 [2023-08-03 15:57:56,182 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1201 transitions. [2023-08-03 15:57:56,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1201 transitions. [2023-08-03 15:57:56,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:57:56,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1201 transitions. [2023-08-03 15:57:56,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 100.08333333333333) internal successors, (1201), 12 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states 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 15:57:56,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 260.0) internal successors, (3380), 13 states have internal predecessors, (3380), 0 states have call successors, (0), 0 states 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 15:57:56,187 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 260.0) internal successors, (3380), 13 states have internal predecessors, (3380), 0 states have call successors, (0), 0 states 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 15:57:56,187 INFO L175 Difference]: Start difference. First operand has 78 places, 23 transitions, 127 flow. Second operand 12 states and 1201 transitions. [2023-08-03 15:57:56,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 41 transitions, 305 flow [2023-08-03 15:57:56,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 41 transitions, 273 flow, removed 5 selfloop flow, removed 11 redundant places. [2023-08-03 15:57:56,188 INFO L231 Difference]: Finished difference. Result has 53 places, 0 transitions, 0 flow [2023-08-03 15:57:56,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=53, PETRI_TRANSITIONS=0} [2023-08-03 15:57:56,188 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2023-08-03 15:57:56,188 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 0 transitions, 0 flow [2023-08-03 15:57:56,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 99.33333333333333) internal successors, (894), 9 states have internal predecessors, (894), 0 states have call successors, (0), 0 states 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 15:57:56,189 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (8 of 9 remaining) [2023-08-03 15:57:56,189 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2023-08-03 15:57:56,189 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 9 remaining) [2023-08-03 15:57:56,189 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 9 remaining) [2023-08-03 15:57:56,189 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 9 remaining) [2023-08-03 15:57:56,189 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 9 remaining) [2023-08-03 15:57:56,189 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 9 remaining) [2023-08-03 15:57:56,189 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2023-08-03 15:57:56,189 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2023-08-03 15:57:56,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-03 15:57:56,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:57:56,393 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:57:56,396 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 15:57:56,396 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 15:57:56,399 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 03:57:56 BasicIcfg [2023-08-03 15:57:56,399 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 15:57:56,399 INFO L158 Benchmark]: Toolchain (without parser) took 12618.55ms. Allocated memory was 379.6MB in the beginning and 671.1MB in the end (delta: 291.5MB). Free memory was 343.5MB in the beginning and 354.5MB in the end (delta: -11.0MB). Peak memory consumption was 283.4MB. Max. memory is 16.0GB. [2023-08-03 15:57:56,399 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 379.6MB. Free memory is still 336.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 15:57:56,399 INFO L158 Benchmark]: CACSL2BoogieTranslator took 375.32ms. Allocated memory is still 379.6MB. Free memory was 343.5MB in the beginning and 324.0MB in the end (delta: 19.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-03 15:57:56,399 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.08ms. Allocated memory is still 379.6MB. Free memory was 324.0MB in the beginning and 321.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 15:57:56,400 INFO L158 Benchmark]: Boogie Preprocessor took 27.38ms. Allocated memory is still 379.6MB. Free memory was 321.9MB in the beginning and 320.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 15:57:56,400 INFO L158 Benchmark]: RCFGBuilder took 233.92ms. Allocated memory is still 379.6MB. Free memory was 320.2MB in the beginning and 305.8MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-03 15:57:56,400 INFO L158 Benchmark]: TraceAbstraction took 11932.26ms. Allocated memory was 379.6MB in the beginning and 671.1MB in the end (delta: 291.5MB). Free memory was 305.1MB in the beginning and 354.5MB in the end (delta: -49.4MB). Peak memory consumption was 243.5MB. Max. memory is 16.0GB. [2023-08-03 15:57:56,401 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 379.6MB. Free memory is still 336.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 375.32ms. Allocated memory is still 379.6MB. Free memory was 343.5MB in the beginning and 324.0MB in the end (delta: 19.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 46.08ms. Allocated memory is still 379.6MB. Free memory was 324.0MB in the beginning and 321.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.38ms. Allocated memory is still 379.6MB. Free memory was 321.9MB in the beginning and 320.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 233.92ms. Allocated memory is still 379.6MB. Free memory was 320.2MB in the beginning and 305.8MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 11932.26ms. Allocated memory was 379.6MB in the beginning and 671.1MB in the end (delta: 291.5MB). Free memory was 305.1MB in the beginning and 354.5MB in the end (delta: -49.4MB). Peak memory consumption was 243.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 231]: Unsoundness Warning unspecified type, defaulting to int C: short [231] - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 99 PlacesBefore, 27 PlacesAfterwards, 102 TransitionsBefore, 25 TransitionsAfterwards, 2028 CoEnabledTransitionPairs, 6 FixpointIterations, 37 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 9 ConcurrentYvCompositions, 5 ChoiceCompositions, 96 TotalNumberOfCompositions, 3843 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1998, independent: 1809, independent conditional: 0, independent unconditional: 1809, dependent: 189, dependent conditional: 0, dependent unconditional: 189, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1119, independent: 1081, independent conditional: 0, independent unconditional: 1081, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1998, independent: 728, independent conditional: 0, independent unconditional: 728, dependent: 151, dependent conditional: 0, dependent unconditional: 151, unknown: 1119, unknown conditional: 0, unknown unconditional: 1119] , Statistics on independence cache: Total cache size (in pairs): 63, Positive cache size: 46, Positive conditional cache size: 0, Positive unconditional cache size: 46, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 130 PlacesBefore, 42 PlacesAfterwards, 135 TransitionsBefore, 40 TransitionsAfterwards, 5980 CoEnabledTransitionPairs, 6 FixpointIterations, 40 TrivialSequentialCompositions, 67 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 10 ConcurrentYvCompositions, 7 ChoiceCompositions, 125 TotalNumberOfCompositions, 12423 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6312, independent: 6069, independent conditional: 0, independent unconditional: 6069, dependent: 243, dependent conditional: 0, dependent unconditional: 243, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3171, independent: 3111, independent conditional: 0, independent unconditional: 3111, dependent: 60, dependent conditional: 0, dependent unconditional: 60, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6312, independent: 2958, independent conditional: 0, independent unconditional: 2958, dependent: 183, dependent conditional: 0, dependent unconditional: 183, unknown: 3171, unknown conditional: 0, unknown unconditional: 3171] , Statistics on independence cache: Total cache size (in pairs): 145, Positive cache size: 120, Positive conditional cache size: 0, Positive unconditional cache size: 120, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25, 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 - 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, 126 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: 2.8s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 47 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 125 IncrementalHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 2 mSDtfsCounter, 125 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=3, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 34 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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, 151 locations, 9 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: 9.0s, OverallIterations: 16, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1410 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1113 mSDsluCounter, 938 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 829 mSDsCounter, 88 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3781 IncrementalHoareTripleChecker+Invalid, 3869 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 88 mSolverCounterUnsat, 109 mSDtfsCounter, 3781 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 236 GetRequests, 133 SyntacticMatches, 9 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=307occurred in iteration=5, InterpolantAutomatonStates: 102, 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, 1.4s InterpolantComputationTime, 326 NumberOfCodeBlocks, 326 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 335 ConstructedInterpolants, 0 QuantifiedInterpolants, 1936 SizeOfPredicates, 30 NumberOfNonLiveVariables, 904 ConjunctsInSsa, 111 ConjunctsInUnsatCore, 24 InterpolantComputations, 14 PerfectInterpolantSequences, 69/93 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 15:57:56,416 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...