/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_20-publish-regression_true_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 16:00:47,902 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 16:00:47,962 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 16:00:47,966 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 16:00:47,966 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 16:00:47,967 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 16:00:47,967 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 16:00:47,989 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 16:00:47,990 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 16:00:47,992 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 16:00:47,993 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 16:00:47,993 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 16:00:47,993 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 16:00:47,994 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 16:00:47,994 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 16:00:47,994 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 16:00:47,995 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 16:00:47,995 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 16:00:47,995 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 16:00:47,995 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 16:00:47,995 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 16:00:47,995 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 16:00:47,995 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 16:00:47,996 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 16:00:47,997 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 16:00:47,997 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 16:00:47,997 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 16:00:47,997 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 16:00:47,997 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 16:00:47,998 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 16:00:47,998 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:00:47,998 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 16:00:47,998 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 16:00:47,999 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 16:00:47,999 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 16:00:47,999 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 16:00:47,999 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 16:00:47,999 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 16:00:47,999 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 16:00:47,999 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 16:00:47,999 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 16:00:47,999 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 16:00:48,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 16:00:48,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 16:00:48,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 16:00:48,178 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 16:00:48,182 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 16:00:48,183 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_20-publish-regression_true_bound2.i [2023-08-03 16:00:49,229 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 16:00:49,396 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 16:00:49,405 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_20-publish-regression_true_bound2.i [2023-08-03 16:00:49,414 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05a1ccef2/5180a6656d6143ecb623a37ca69718fe/FLAG94d8441b6 [2023-08-03 16:00:49,426 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05a1ccef2/5180a6656d6143ecb623a37ca69718fe [2023-08-03 16:00:49,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 16:00:49,428 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 16:00:49,429 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 16:00:49,429 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 16:00:49,432 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 16:00:49,432 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:00:49" (1/1) ... [2023-08-03 16:00:49,433 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2afe1563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:00:49, skipping insertion in model container [2023-08-03 16:00:49,433 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:00:49" (1/1) ... [2023-08-03 16:00:49,464 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 16:00:49,571 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_20-publish-regression_true_bound2.i[1095,1108] [2023-08-03 16:00:49,687 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:00:49,698 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 16:00:49,708 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_20-publish-regression_true_bound2.i[1095,1108] [2023-08-03 16:00:49,724 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-03 16:00:49,725 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-03 16:00:49,751 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:00:49,782 INFO L206 MainTranslator]: Completed translation [2023-08-03 16:00:49,783 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:00:49 WrapperNode [2023-08-03 16:00:49,783 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 16:00:49,784 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 16:00:49,784 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 16:00:49,784 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 16:00:49,789 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:00:49" (1/1) ... [2023-08-03 16:00:49,808 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:00:49" (1/1) ... [2023-08-03 16:00:49,826 INFO L138 Inliner]: procedures = 162, calls = 31, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 91 [2023-08-03 16:00:49,826 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 16:00:49,827 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 16:00:49,827 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 16:00:49,827 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 16:00:49,833 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:00:49" (1/1) ... [2023-08-03 16:00:49,834 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:00:49" (1/1) ... [2023-08-03 16:00:49,836 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:00:49" (1/1) ... [2023-08-03 16:00:49,836 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:00:49" (1/1) ... [2023-08-03 16:00:49,839 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:00:49" (1/1) ... [2023-08-03 16:00:49,842 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:00:49" (1/1) ... [2023-08-03 16:00:49,843 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:00:49" (1/1) ... [2023-08-03 16:00:49,843 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:00:49" (1/1) ... [2023-08-03 16:00:49,845 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 16:00:49,846 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 16:00:49,846 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 16:00:49,846 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 16:00:49,846 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:00:49" (1/1) ... [2023-08-03 16:00:49,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:00:49,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:00:49,889 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 16:00:49,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 16:00:49,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 16:00:49,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 16:00:49,940 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 16:00:49,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 16:00:49,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 16:00:49,940 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-03 16:00:49,940 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-03 16:00:49,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 16:00:49,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 16:00:49,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 16:00:49,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 16:00:49,944 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 16:00:50,028 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 16:00:50,030 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 16:00:50,150 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 16:00:50,154 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 16:00:50,155 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-03 16:00:50,156 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:00:50 BoogieIcfgContainer [2023-08-03 16:00:50,156 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 16:00:50,158 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 16:00:50,158 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 16:00:50,160 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 16:00:50,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 04:00:49" (1/3) ... [2023-08-03 16:00:50,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@101eefc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:00:50, skipping insertion in model container [2023-08-03 16:00:50,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:00:49" (2/3) ... [2023-08-03 16:00:50,161 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@101eefc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:00:50, skipping insertion in model container [2023-08-03 16:00:50,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:00:50" (3/3) ... [2023-08-03 16:00:50,162 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_13-privatized_20-publish-regression_true_bound2.i [2023-08-03 16:00:50,168 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 16:00:50,175 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 16:00:50,176 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-03 16:00:50,176 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 16:00:50,224 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-03 16:00:50,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 95 transitions, 198 flow [2023-08-03 16:00:50,287 INFO L124 PetriNetUnfolderBase]: 9/122 cut-off events. [2023-08-03 16:00:50,287 INFO L125 PetriNetUnfolderBase]: For 1/2 co-relation queries the response was YES. [2023-08-03 16:00:50,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 122 events. 9/122 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 197 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 61. Up to 4 conditions per place. [2023-08-03 16:00:50,291 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 95 transitions, 198 flow [2023-08-03 16:00:50,294 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 90 transitions, 185 flow [2023-08-03 16:00:50,297 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:00:50,303 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 90 transitions, 185 flow [2023-08-03 16:00:50,305 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 88 places, 90 transitions, 185 flow [2023-08-03 16:00:50,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 90 transitions, 185 flow [2023-08-03 16:00:50,325 INFO L124 PetriNetUnfolderBase]: 8/117 cut-off events. [2023-08-03 16:00:50,325 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:00:50,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 117 events. 8/117 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 194 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 61. Up to 4 conditions per place. [2023-08-03 16:00:50,327 INFO L119 LiptonReduction]: Number of co-enabled transitions 1452 [2023-08-03 16:00:52,567 INFO L134 LiptonReduction]: Checked pairs total: 2847 [2023-08-03 16:00:52,568 INFO L136 LiptonReduction]: Total number of compositions: 89 [2023-08-03 16:00:52,582 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:00:52,588 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;@4fcb97d7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:00:52,589 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-03 16:00:52,591 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:00:52,591 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-08-03 16:00:52,591 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:00:52,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:00:52,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-03 16:00:52,592 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 16:00:52,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:00:52,597 INFO L85 PathProgramCache]: Analyzing trace with hash 367, now seen corresponding path program 1 times [2023-08-03 16:00:52,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:00:52,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525522161] [2023-08-03 16:00:52,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:00:52,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:00:52,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:00:52,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:00:52,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:00:52,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525522161] [2023-08-03 16:00:52,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525522161] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:00:52,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:00:52,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-03 16:00:52,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19662236] [2023-08-03 16:00:52,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:00:52,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-03 16:00:52,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:00:52,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-03 16:00:52,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-03 16:00:52,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 184 [2023-08-03 16:00:52,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 22 transitions, 49 flow. Second operand has 2 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:52,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:00:52,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 184 [2023-08-03 16:00:52,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:00:52,786 INFO L124 PetriNetUnfolderBase]: 42/127 cut-off events. [2023-08-03 16:00:52,786 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:00:52,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 127 events. 42/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 450 event pairs, 42 based on Foata normal form. 7/102 useless extension candidates. Maximal degree in co-relation 215. Up to 105 conditions per place. [2023-08-03 16:00:52,788 INFO L140 encePairwiseOnDemand]: 181/184 looper letters, 15 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2023-08-03 16:00:52,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 19 transitions, 73 flow [2023-08-03 16:00:52,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-03 16:00:52,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-03 16:00:52,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 188 transitions. [2023-08-03 16:00:52,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5108695652173914 [2023-08-03 16:00:52,797 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 188 transitions. [2023-08-03 16:00:52,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 188 transitions. [2023-08-03 16:00:52,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:00:52,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 188 transitions. [2023-08-03 16:00:52,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 94.0) internal successors, (188), 2 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:52,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:52,805 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:52,807 INFO L175 Difference]: Start difference. First operand has 24 places, 22 transitions, 49 flow. Second operand 2 states and 188 transitions. [2023-08-03 16:00:52,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 19 transitions, 73 flow [2023-08-03 16:00:52,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 19 transitions, 73 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 16:00:52,809 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 43 flow [2023-08-03 16:00:52,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=43, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2023-08-03 16:00:52,813 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -1 predicate places. [2023-08-03 16:00:52,813 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 43 flow [2023-08-03 16:00:52,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:52,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:00:52,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-03 16:00:52,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 16:00:52,814 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 16:00:52,814 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:00:52,814 INFO L85 PathProgramCache]: Analyzing trace with hash 360968, now seen corresponding path program 1 times [2023-08-03 16:00:52,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:00:52,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496748503] [2023-08-03 16:00:52,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:00:52,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:00:52,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:00:52,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:00:52,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:00:52,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496748503] [2023-08-03 16:00:52,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496748503] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:00:52,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:00:52,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:00:52,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374422596] [2023-08-03 16:00:52,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:00:52,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:00:52,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:00:52,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:00:52,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:00:52,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 184 [2023-08-03 16:00:52,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:52,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:00:52,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 184 [2023-08-03 16:00:52,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:00:53,016 INFO L124 PetriNetUnfolderBase]: 42/115 cut-off events. [2023-08-03 16:00:53,016 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:00:53,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 115 events. 42/115 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 478 event pairs, 25 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 223. Up to 91 conditions per place. [2023-08-03 16:00:53,019 INFO L140 encePairwiseOnDemand]: 181/184 looper letters, 21 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2023-08-03 16:00:53,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 27 transitions, 105 flow [2023-08-03 16:00:53,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:00:53,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:00:53,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 267 transitions. [2023-08-03 16:00:53,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.483695652173913 [2023-08-03 16:00:53,025 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 267 transitions. [2023-08-03 16:00:53,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 267 transitions. [2023-08-03 16:00:53,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:00:53,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 267 transitions. [2023-08-03 16:00:53,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:53,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:53,028 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:53,028 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 43 flow. Second operand 3 states and 267 transitions. [2023-08-03 16:00:53,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 27 transitions, 105 flow [2023-08-03 16:00:53,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 27 transitions, 105 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 16:00:53,029 INFO L231 Difference]: Finished difference. Result has 26 places, 19 transitions, 51 flow [2023-08-03 16:00:53,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=51, PETRI_PLACES=26, PETRI_TRANSITIONS=19} [2023-08-03 16:00:53,030 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 2 predicate places. [2023-08-03 16:00:53,030 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 19 transitions, 51 flow [2023-08-03 16:00:53,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:53,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:00:53,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 16:00:53,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 16:00:53,030 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 16:00:53,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:00:53,033 INFO L85 PathProgramCache]: Analyzing trace with hash -2104384075, now seen corresponding path program 1 times [2023-08-03 16:00:53,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:00:53,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999581523] [2023-08-03 16:00:53,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:00:53,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:00:53,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:00:53,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:00:53,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:00:53,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999581523] [2023-08-03 16:00:53,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999581523] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:00:53,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683138152] [2023-08-03 16:00:53,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:00:53,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:00:53,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:00:53,083 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:00:53,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 16:00:53,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:00:53,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 16:00:53,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:00:53,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:00:53,168 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:00:53,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:00:53,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683138152] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:00:53,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:00:53,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 16:00:53,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334241828] [2023-08-03 16:00:53,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:00:53,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:00:53,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:00:53,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:00:53,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:00:53,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 184 [2023-08-03 16:00:53,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 19 transitions, 51 flow. Second operand has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:53,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:00:53,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 184 [2023-08-03 16:00:53,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:00:53,233 INFO L124 PetriNetUnfolderBase]: 14/51 cut-off events. [2023-08-03 16:00:53,233 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-03 16:00:53,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 51 events. 14/51 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 135 event pairs, 5 based on Foata normal form. 8/52 useless extension candidates. Maximal degree in co-relation 116. Up to 30 conditions per place. [2023-08-03 16:00:53,234 INFO L140 encePairwiseOnDemand]: 181/184 looper letters, 17 selfloop transitions, 2 changer transitions 0/23 dead transitions. [2023-08-03 16:00:53,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 23 transitions, 95 flow [2023-08-03 16:00:53,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:00:53,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:00:53,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 340 transitions. [2023-08-03 16:00:53,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46195652173913043 [2023-08-03 16:00:53,236 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 340 transitions. [2023-08-03 16:00:53,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 340 transitions. [2023-08-03 16:00:53,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:00:53,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 340 transitions. [2023-08-03 16:00:53,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.0) internal successors, (340), 4 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 16:00:53,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:53,240 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:53,240 INFO L175 Difference]: Start difference. First operand has 26 places, 19 transitions, 51 flow. Second operand 4 states and 340 transitions. [2023-08-03 16:00:53,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 23 transitions, 95 flow [2023-08-03 16:00:53,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 23 transitions, 89 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 16:00:53,241 INFO L231 Difference]: Finished difference. Result has 22 places, 15 transitions, 39 flow [2023-08-03 16:00:53,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=35, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=39, PETRI_PLACES=22, PETRI_TRANSITIONS=15} [2023-08-03 16:00:53,242 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -2 predicate places. [2023-08-03 16:00:53,242 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 15 transitions, 39 flow [2023-08-03 16:00:53,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:53,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:00:53,243 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 16:00:53,250 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 16:00:53,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:00:53,448 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 2 more)] === [2023-08-03 16:00:53,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:00:53,449 INFO L85 PathProgramCache]: Analyzing trace with hash -2104383183, now seen corresponding path program 1 times [2023-08-03 16:00:53,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:00:53,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193220442] [2023-08-03 16:00:53,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:00:53,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:00:53,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:00:53,471 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 16:00:53,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:00:53,488 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 16:00:53,488 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 16:00:53,488 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-08-03 16:00:53,490 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-03 16:00:53,490 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-08-03 16:00:53,490 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-08-03 16:00:53,501 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-08-03 16:00:53,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 16:00:53,501 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-03 16:00:53,502 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 16:00:53,502 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 16:00:53,514 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-03 16:00:53,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 119 transitions, 256 flow [2023-08-03 16:00:53,536 INFO L124 PetriNetUnfolderBase]: 16/197 cut-off events. [2023-08-03 16:00:53,536 INFO L125 PetriNetUnfolderBase]: For 6/8 co-relation queries the response was YES. [2023-08-03 16:00:53,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 197 events. 16/197 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 472 event pairs, 0 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 124. Up to 8 conditions per place. [2023-08-03 16:00:53,539 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 119 transitions, 256 flow [2023-08-03 16:00:53,540 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 119 transitions, 256 flow [2023-08-03 16:00:53,540 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:00:53,541 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 116 places, 119 transitions, 256 flow [2023-08-03 16:00:53,541 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 116 places, 119 transitions, 256 flow [2023-08-03 16:00:53,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 119 transitions, 256 flow [2023-08-03 16:00:53,560 INFO L124 PetriNetUnfolderBase]: 16/197 cut-off events. [2023-08-03 16:00:53,560 INFO L125 PetriNetUnfolderBase]: For 6/8 co-relation queries the response was YES. [2023-08-03 16:00:53,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 197 events. 16/197 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 472 event pairs, 0 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 124. Up to 8 conditions per place. [2023-08-03 16:00:53,564 INFO L119 LiptonReduction]: Number of co-enabled transitions 4356 [2023-08-03 16:00:55,509 INFO L134 LiptonReduction]: Checked pairs total: 12135 [2023-08-03 16:00:55,509 INFO L136 LiptonReduction]: Total number of compositions: 104 [2023-08-03 16:00:55,510 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:00:55,511 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;@4fcb97d7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:00:55,511 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-03 16:00:55,512 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:00:55,512 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-08-03 16:00:55,512 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:00:55,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:00:55,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-03 16:00:55,512 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 16:00:55,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:00:55,513 INFO L85 PathProgramCache]: Analyzing trace with hash 613, now seen corresponding path program 1 times [2023-08-03 16:00:55,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:00:55,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708341730] [2023-08-03 16:00:55,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:00:55,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:00:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:00:55,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:00:55,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:00:55,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708341730] [2023-08-03 16:00:55,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708341730] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:00:55,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:00:55,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-03 16:00:55,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208706101] [2023-08-03 16:00:55,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:00:55,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-03 16:00:55,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:00:55,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-03 16:00:55,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-03 16:00:55,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 223 [2023-08-03 16:00:55,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 102 flow. Second operand has 2 states, 2 states have (on average 105.5) internal successors, (211), 2 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:55,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:00:55,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 223 [2023-08-03 16:00:55,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:00:55,757 INFO L124 PetriNetUnfolderBase]: 1339/2440 cut-off events. [2023-08-03 16:00:55,758 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2023-08-03 16:00:55,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4706 conditions, 2440 events. 1339/2440 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 13852 event pairs, 1328 based on Foata normal form. 0/1972 useless extension candidates. Maximal degree in co-relation 2360. Up to 2204 conditions per place. [2023-08-03 16:00:55,767 INFO L140 encePairwiseOnDemand]: 220/223 looper letters, 30 selfloop transitions, 0 changer transitions 0/37 dead transitions. [2023-08-03 16:00:55,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 37 transitions, 152 flow [2023-08-03 16:00:55,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-03 16:00:55,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-03 16:00:55,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 243 transitions. [2023-08-03 16:00:55,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5448430493273543 [2023-08-03 16:00:55,768 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 243 transitions. [2023-08-03 16:00:55,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 243 transitions. [2023-08-03 16:00:55,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:00:55,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 243 transitions. [2023-08-03 16:00:55,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 121.5) internal successors, (243), 2 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:55,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:55,770 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:55,770 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 102 flow. Second operand 2 states and 243 transitions. [2023-08-03 16:00:55,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 37 transitions, 152 flow [2023-08-03 16:00:55,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 37 transitions, 152 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 16:00:55,773 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 92 flow [2023-08-03 16:00:55,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=92, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-08-03 16:00:55,775 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -2 predicate places. [2023-08-03 16:00:55,775 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 92 flow [2023-08-03 16:00:55,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 105.5) internal successors, (211), 2 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:55,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:00:55,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-03 16:00:55,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 16:00:55,776 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 16:00:55,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:00:55,776 INFO L85 PathProgramCache]: Analyzing trace with hash 606986, now seen corresponding path program 1 times [2023-08-03 16:00:55,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:00:55,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895138352] [2023-08-03 16:00:55,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:00:55,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:00:55,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:00:55,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:00:55,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:00:55,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895138352] [2023-08-03 16:00:55,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895138352] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:00:55,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:00:55,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:00:55,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802230287] [2023-08-03 16:00:55,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:00:55,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:00:55,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:00:55,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:00:55,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:00:55,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 223 [2023-08-03 16:00:55,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:55,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:00:55,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 223 [2023-08-03 16:00:55,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:00:55,984 INFO L124 PetriNetUnfolderBase]: 1338/2401 cut-off events. [2023-08-03 16:00:55,984 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-08-03 16:00:55,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4672 conditions, 2401 events. 1338/2401 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 13725 event pairs, 608 based on Foata normal form. 0/1945 useless extension candidates. Maximal degree in co-relation 4667. Up to 2189 conditions per place. [2023-08-03 16:00:55,993 INFO L140 encePairwiseOnDemand]: 220/223 looper letters, 38 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-08-03 16:00:55,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 47 transitions, 192 flow [2023-08-03 16:00:55,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:00:55,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:00:55,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 344 transitions. [2023-08-03 16:00:55,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142002989536621 [2023-08-03 16:00:55,995 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 344 transitions. [2023-08-03 16:00:55,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 344 transitions. [2023-08-03 16:00:55,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:00:55,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 344 transitions. [2023-08-03 16:00:55,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 16:00:55,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:55,998 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:55,998 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 92 flow. Second operand 3 states and 344 transitions. [2023-08-03 16:00:55,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 47 transitions, 192 flow [2023-08-03 16:00:56,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 47 transitions, 192 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 16:00:56,001 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 104 flow [2023-08-03 16:00:56,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2023-08-03 16:00:56,004 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2023-08-03 16:00:56,004 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 104 flow [2023-08-03 16:00:56,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:56,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:00:56,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:00:56,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 16:00:56,007 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 16:00:56,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:00:56,008 INFO L85 PathProgramCache]: Analyzing trace with hash -970649733, now seen corresponding path program 1 times [2023-08-03 16:00:56,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:00:56,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522053721] [2023-08-03 16:00:56,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:00:56,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:00:56,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:00:56,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:00:56,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:00:56,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522053721] [2023-08-03 16:00:56,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522053721] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:00:56,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207225440] [2023-08-03 16:00:56,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:00:56,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:00:56,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:00:56,094 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:00:56,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 16:00:56,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:00:56,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 16:00:56,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:00:56,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:00:56,173 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:00:56,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:00:56,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207225440] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:00:56,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:00:56,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 16:00:56,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959247538] [2023-08-03 16:00:56,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:00:56,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:00:56,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:00:56,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:00:56,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:00:56,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 223 [2023-08-03 16:00:56,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:56,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:00:56,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 223 [2023-08-03 16:00:56,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:00:56,388 INFO L124 PetriNetUnfolderBase]: 1305/2215 cut-off events. [2023-08-03 16:00:56,388 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2023-08-03 16:00:56,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4609 conditions, 2215 events. 1305/2215 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 12074 event pairs, 73 based on Foata normal form. 9/1870 useless extension candidates. Maximal degree in co-relation 4602. Up to 1717 conditions per place. [2023-08-03 16:00:56,397 INFO L140 encePairwiseOnDemand]: 219/223 looper letters, 53 selfloop transitions, 4 changer transitions 0/64 dead transitions. [2023-08-03 16:00:56,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 64 transitions, 270 flow [2023-08-03 16:00:56,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:00:56,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:00:56,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 458 transitions. [2023-08-03 16:00:56,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5134529147982063 [2023-08-03 16:00:56,398 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 458 transitions. [2023-08-03 16:00:56,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 458 transitions. [2023-08-03 16:00:56,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:00:56,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 458 transitions. [2023-08-03 16:00:56,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:56,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 223.0) internal successors, (1115), 5 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:56,402 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 223.0) internal successors, (1115), 5 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:56,402 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 104 flow. Second operand 4 states and 458 transitions. [2023-08-03 16:00:56,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 64 transitions, 270 flow [2023-08-03 16:00:56,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 64 transitions, 268 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:00:56,406 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 122 flow [2023-08-03 16:00:56,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2023-08-03 16:00:56,407 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 5 predicate places. [2023-08-03 16:00:56,407 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 122 flow [2023-08-03 16:00:56,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:56,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:00:56,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:00:56,421 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 16:00:56,612 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,SelfDestructingSolverStorable6 [2023-08-03 16:00:56,612 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 16:00:56,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:00:56,613 INFO L85 PathProgramCache]: Analyzing trace with hash 922185496, now seen corresponding path program 1 times [2023-08-03 16:00:56,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:00:56,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971480273] [2023-08-03 16:00:56,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:00:56,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:00:56,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:00:56,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:00:56,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:00:56,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971480273] [2023-08-03 16:00:56,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971480273] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:00:56,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:00:56,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:00:56,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805059977] [2023-08-03 16:00:56,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:00:56,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:00:56,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:00:56,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:00:56,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:00:56,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 223 [2023-08-03 16:00:56,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:56,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:00:56,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 223 [2023-08-03 16:00:56,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:00:56,901 INFO L124 PetriNetUnfolderBase]: 1255/2316 cut-off events. [2023-08-03 16:00:56,901 INFO L125 PetriNetUnfolderBase]: For 1076/1076 co-relation queries the response was YES. [2023-08-03 16:00:56,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5119 conditions, 2316 events. 1255/2316 cut-off events. For 1076/1076 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 13999 event pairs, 589 based on Foata normal form. 0/2064 useless extension candidates. Maximal degree in co-relation 5111. Up to 1130 conditions per place. [2023-08-03 16:00:56,909 INFO L140 encePairwiseOnDemand]: 217/223 looper letters, 53 selfloop transitions, 4 changer transitions 3/67 dead transitions. [2023-08-03 16:00:56,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 67 transitions, 330 flow [2023-08-03 16:00:56,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:00:56,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:00:56,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 358 transitions. [2023-08-03 16:00:56,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5351270553064275 [2023-08-03 16:00:56,911 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 358 transitions. [2023-08-03 16:00:56,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 358 transitions. [2023-08-03 16:00:56,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:00:56,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 358 transitions. [2023-08-03 16:00:56,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:56,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:56,915 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:56,915 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 122 flow. Second operand 3 states and 358 transitions. [2023-08-03 16:00:56,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 67 transitions, 330 flow [2023-08-03 16:00:56,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 67 transitions, 323 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-03 16:00:56,918 INFO L231 Difference]: Finished difference. Result has 51 places, 43 transitions, 154 flow [2023-08-03 16:00:56,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=51, PETRI_TRANSITIONS=43} [2023-08-03 16:00:56,918 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 8 predicate places. [2023-08-03 16:00:56,919 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 43 transitions, 154 flow [2023-08-03 16:00:56,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:56,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:00:56,919 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 16:00:56,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-03 16:00:56,919 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 16:00:56,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:00:56,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1203853195, now seen corresponding path program 1 times [2023-08-03 16:00:56,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:00:56,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948890441] [2023-08-03 16:00:56,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:00:56,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:00:56,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:00:56,973 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:00:56,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:00:56,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948890441] [2023-08-03 16:00:56,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948890441] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:00:56,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420585696] [2023-08-03 16:00:56,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:00:56,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:00:56,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:00:56,985 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:00:56,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 16:00:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:00:57,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 16:00:57,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:00:57,099 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:00:57,099 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 16:00:57,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420585696] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:00:57,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 16:00:57,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 16:00:57,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353555741] [2023-08-03 16:00:57,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:00:57,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:00:57,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:00:57,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:00:57,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 16:00:57,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 223 [2023-08-03 16:00:57,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 154 flow. Second operand has 5 states, 5 states have (on average 101.6) internal successors, (508), 5 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:57,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:00:57,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 223 [2023-08-03 16:00:57,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:00:57,284 INFO L124 PetriNetUnfolderBase]: 1119/1941 cut-off events. [2023-08-03 16:00:57,284 INFO L125 PetriNetUnfolderBase]: For 1068/1068 co-relation queries the response was YES. [2023-08-03 16:00:57,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4823 conditions, 1941 events. 1119/1941 cut-off events. For 1068/1068 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 10800 event pairs, 10 based on Foata normal form. 80/1835 useless extension candidates. Maximal degree in co-relation 4813. Up to 1701 conditions per place. [2023-08-03 16:00:57,290 INFO L140 encePairwiseOnDemand]: 220/223 looper letters, 60 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2023-08-03 16:00:57,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 69 transitions, 362 flow [2023-08-03 16:00:57,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 16:00:57,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 16:00:57,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 556 transitions. [2023-08-03 16:00:57,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49865470852017935 [2023-08-03 16:00:57,292 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 556 transitions. [2023-08-03 16:00:57,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 556 transitions. [2023-08-03 16:00:57,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:00:57,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 556 transitions. [2023-08-03 16:00:57,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.2) internal successors, (556), 5 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:57,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 223.0) internal successors, (1338), 6 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:57,295 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 223.0) internal successors, (1338), 6 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:57,295 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 154 flow. Second operand 5 states and 556 transitions. [2023-08-03 16:00:57,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 69 transitions, 362 flow [2023-08-03 16:00:57,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 69 transitions, 336 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 16:00:57,297 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 134 flow [2023-08-03 16:00:57,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=134, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2023-08-03 16:00:57,297 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 6 predicate places. [2023-08-03 16:00:57,297 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 134 flow [2023-08-03 16:00:57,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.6) internal successors, (508), 5 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:57,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:00:57,298 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-08-03 16:00:57,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 16:00:57,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:00:57,502 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 16:00:57,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:00:57,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1203852013, now seen corresponding path program 1 times [2023-08-03 16:00:57,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:00:57,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865216985] [2023-08-03 16:00:57,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:00:57,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:00:57,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:00:57,547 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:00:57,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:00:57,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865216985] [2023-08-03 16:00:57,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865216985] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:00:57,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:00:57,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 16:00:57,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674575291] [2023-08-03 16:00:57,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:00:57,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:00:57,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:00:57,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:00:57,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:00:57,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 223 [2023-08-03 16:00:57,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:57,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:00:57,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 223 [2023-08-03 16:00:57,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:00:57,701 INFO L124 PetriNetUnfolderBase]: 1069/1999 cut-off events. [2023-08-03 16:00:57,701 INFO L125 PetriNetUnfolderBase]: For 989/989 co-relation queries the response was YES. [2023-08-03 16:00:57,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4572 conditions, 1999 events. 1069/1999 cut-off events. For 989/989 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 11854 event pairs, 514 based on Foata normal form. 0/1843 useless extension candidates. Maximal degree in co-relation 4564. Up to 965 conditions per place. [2023-08-03 16:00:57,707 INFO L140 encePairwiseOnDemand]: 217/223 looper letters, 49 selfloop transitions, 5 changer transitions 3/63 dead transitions. [2023-08-03 16:00:57,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 63 transitions, 316 flow [2023-08-03 16:00:57,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:00:57,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:00:57,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 356 transitions. [2023-08-03 16:00:57,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5321375186846039 [2023-08-03 16:00:57,708 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 356 transitions. [2023-08-03 16:00:57,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 356 transitions. [2023-08-03 16:00:57,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:00:57,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 356 transitions. [2023-08-03 16:00:57,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:57,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:57,710 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:57,710 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 134 flow. Second operand 3 states and 356 transitions. [2023-08-03 16:00:57,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 63 transitions, 316 flow [2023-08-03 16:00:57,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 63 transitions, 308 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 16:00:57,712 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 146 flow [2023-08-03 16:00:57,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2023-08-03 16:00:57,712 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 6 predicate places. [2023-08-03 16:00:57,713 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 146 flow [2023-08-03 16:00:57,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:57,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:00:57,713 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:00:57,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-03 16:00:57,713 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 16:00:57,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:00:57,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1438717834, now seen corresponding path program 1 times [2023-08-03 16:00:57,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:00:57,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683168760] [2023-08-03 16:00:57,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:00:57,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:00:57,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:00:57,775 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:00:57,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:00:57,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683168760] [2023-08-03 16:00:57,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683168760] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:00:57,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16105159] [2023-08-03 16:00:57,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:00:57,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:00:57,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:00:57,776 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 16:00:57,778 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 16:00:57,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:00:57,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-03 16:00:57,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:00:57,875 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-03 16:00:57,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 16:00:57,893 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-03 16:00:57,910 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:00:57,910 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:00:57,958 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 16:00:57,958 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2023-08-03 16:00:57,961 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2023-08-03 16:00:57,975 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:00:57,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16105159] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:00:57,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:00:57,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-08-03 16:00:57,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007543534] [2023-08-03 16:00:57,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:00:57,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-03 16:00:57,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:00:57,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-03 16:00:57,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-08-03 16:00:58,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 223 [2023-08-03 16:00:58,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 146 flow. Second operand has 10 states, 10 states have (on average 95.5) internal successors, (955), 10 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:58,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:00:58,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 223 [2023-08-03 16:00:58,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:00:58,242 INFO L124 PetriNetUnfolderBase]: 360/759 cut-off events. [2023-08-03 16:00:58,242 INFO L125 PetriNetUnfolderBase]: For 546/546 co-relation queries the response was YES. [2023-08-03 16:00:58,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1909 conditions, 759 events. 360/759 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3702 event pairs, 75 based on Foata normal form. 124/811 useless extension candidates. Maximal degree in co-relation 1900. Up to 590 conditions per place. [2023-08-03 16:00:58,244 INFO L140 encePairwiseOnDemand]: 216/223 looper letters, 0 selfloop transitions, 0 changer transitions 45/45 dead transitions. [2023-08-03 16:00:58,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 45 transitions, 243 flow [2023-08-03 16:00:58,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:00:58,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:00:58,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 416 transitions. [2023-08-03 16:00:58,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4663677130044843 [2023-08-03 16:00:58,245 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 416 transitions. [2023-08-03 16:00:58,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 416 transitions. [2023-08-03 16:00:58,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:00:58,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 416 transitions. [2023-08-03 16:00:58,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:58,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 223.0) internal successors, (1115), 5 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:58,248 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 223.0) internal successors, (1115), 5 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:58,248 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 146 flow. Second operand 4 states and 416 transitions. [2023-08-03 16:00:58,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 45 transitions, 243 flow [2023-08-03 16:00:58,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 45 transitions, 220 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 16:00:58,249 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2023-08-03 16:00:58,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2023-08-03 16:00:58,250 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2023-08-03 16:00:58,250 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2023-08-03 16:00:58,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 95.5) internal successors, (955), 10 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:58,250 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-08-03 16:00:58,250 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-03 16:00:58,250 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-08-03 16:00:58,250 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-08-03 16:00:58,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-08-03 16:00:58,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-03 16:00:58,281 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 16:00:58,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:00:58,479 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:00:58,482 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 16:00:58,482 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 16:00:58,484 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 04:00:58 BasicIcfg [2023-08-03 16:00:58,484 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 16:00:58,484 INFO L158 Benchmark]: Toolchain (without parser) took 9056.18ms. Allocated memory was 505.4MB in the beginning and 639.6MB in the end (delta: 134.2MB). Free memory was 458.0MB in the beginning and 598.9MB in the end (delta: -140.9MB). Peak memory consumption was 367.0MB. Max. memory is 16.0GB. [2023-08-03 16:00:58,485 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 346.0MB. Free memory was 294.6MB in the beginning and 294.5MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 16:00:58,485 INFO L158 Benchmark]: CACSL2BoogieTranslator took 354.16ms. Allocated memory is still 505.4MB. Free memory was 458.0MB in the beginning and 438.3MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 16:00:58,485 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.51ms. Allocated memory is still 505.4MB. Free memory was 438.3MB in the beginning and 436.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 16:00:58,485 INFO L158 Benchmark]: Boogie Preprocessor took 18.14ms. Allocated memory is still 505.4MB. Free memory was 436.2MB in the beginning and 435.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 16:00:58,485 INFO L158 Benchmark]: RCFGBuilder took 310.55ms. Allocated memory is still 505.4MB. Free memory was 435.0MB in the beginning and 420.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-03 16:00:58,485 INFO L158 Benchmark]: TraceAbstraction took 8326.56ms. Allocated memory was 505.4MB in the beginning and 639.6MB in the end (delta: 134.2MB). Free memory was 419.4MB in the beginning and 598.9MB in the end (delta: -179.5MB). Peak memory consumption was 329.3MB. Max. memory is 16.0GB. [2023-08-03 16:00:58,486 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 346.0MB. Free memory was 294.6MB in the beginning and 294.5MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 354.16ms. Allocated memory is still 505.4MB. Free memory was 458.0MB in the beginning and 438.3MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 42.51ms. Allocated memory is still 505.4MB. Free memory was 438.3MB in the beginning and 436.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 18.14ms. Allocated memory is still 505.4MB. Free memory was 436.2MB in the beginning and 435.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 310.55ms. Allocated memory is still 505.4MB. Free memory was 435.0MB in the beginning and 420.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 8326.56ms. Allocated memory was 505.4MB in the beginning and 639.6MB in the end (delta: 134.2MB). Free memory was 419.4MB in the beginning and 598.9MB in the end (delta: -179.5MB). Peak memory consumption was 329.3MB. 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: 2.3s, 88 PlacesBefore, 24 PlacesAfterwards, 90 TransitionsBefore, 22 TransitionsAfterwards, 1452 CoEnabledTransitionPairs, 6 FixpointIterations, 37 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 6 ConcurrentYvCompositions, 4 ChoiceCompositions, 89 TotalNumberOfCompositions, 2847 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1675, independent: 1531, independent conditional: 0, independent unconditional: 1531, dependent: 144, dependent conditional: 0, dependent unconditional: 144, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 787, independent: 758, independent conditional: 0, independent unconditional: 758, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1675, independent: 773, independent conditional: 0, independent unconditional: 773, dependent: 115, dependent conditional: 0, dependent unconditional: 115, unknown: 787, unknown conditional: 0, unknown unconditional: 787] , Statistics on independence cache: Total cache size (in pairs): 52, Positive cache size: 38, Positive conditional cache size: 0, Positive unconditional cache size: 38, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 116 PlacesBefore, 43 PlacesAfterwards, 119 TransitionsBefore, 42 TransitionsAfterwards, 4356 CoEnabledTransitionPairs, 6 FixpointIterations, 36 TrivialSequentialCompositions, 53 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 10 ConcurrentYvCompositions, 4 ChoiceCompositions, 104 TotalNumberOfCompositions, 12135 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5246, independent: 4975, independent conditional: 0, independent unconditional: 4975, dependent: 271, dependent conditional: 0, dependent unconditional: 271, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2301, independent: 2239, independent conditional: 0, independent unconditional: 2239, dependent: 62, dependent conditional: 0, dependent unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5246, independent: 2736, independent conditional: 0, independent unconditional: 2736, dependent: 209, dependent conditional: 0, dependent unconditional: 209, unknown: 2301, unknown conditional: 0, unknown unconditional: 2301] , Statistics on independence cache: Total cache size (in pairs): 188, Positive cache size: 162, Positive conditional cache size: 0, Positive unconditional cache size: 162, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 112 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.3s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 68 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 48 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 95 IncrementalHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 7 mSDtfsCounter, 95 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=2, InterpolantAutomatonStates: 9, 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, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 43 SizeOfPredicates, 0 NumberOfNonLiveVariables, 108 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 0/3 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, 134 locations, 6 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: 5.0s, OverallIterations: 7, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 447 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 354 mSDsluCounter, 29 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 82 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 828 IncrementalHoareTripleChecker+Invalid, 911 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 82 mSolverCounterUnsat, 27 mSDtfsCounter, 828 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=154occurred in iteration=4, InterpolantAutomatonStates: 24, 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, 0.5s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 97 ConstructedInterpolants, 1 QuantifiedInterpolants, 390 SizeOfPredicates, 3 NumberOfNonLiveVariables, 377 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 12 InterpolantComputations, 5 PerfectInterpolantSequences, 20/43 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 16:00:58,497 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...