/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_67-pthread_cond_wait_unknown_1_pos_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 16:03:38,228 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 16:03:38,277 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 16:03:38,281 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 16:03:38,281 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 16:03:38,282 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 16:03:38,282 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 16:03:38,302 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 16:03:38,302 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 16:03:38,303 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 16:03:38,303 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 16:03:38,303 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 16:03:38,304 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 16:03:38,304 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 16:03:38,304 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 16:03:38,305 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 16:03:38,305 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 16:03:38,305 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 16:03:38,306 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 16:03:38,306 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 16:03:38,306 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 16:03:38,307 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 16:03:38,307 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 16:03:38,307 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 16:03:38,311 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 16:03:38,311 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 16:03:38,312 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 16:03:38,312 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 16:03:38,312 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 16:03:38,316 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 16:03:38,316 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:03:38,316 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 16:03:38,316 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 16:03:38,317 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 16:03:38,317 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 16:03:38,317 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 16:03:38,317 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 16:03:38,317 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 16:03:38,318 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 16:03:38,318 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 16:03:38,318 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 16:03:38,319 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 16:03:38,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 16:03:38,538 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 16:03:38,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 16:03:38,541 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 16:03:38,541 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 16:03:38,542 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_67-pthread_cond_wait_unknown_1_pos_bound2.i [2023-08-03 16:03:39,695 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 16:03:39,957 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 16:03:39,961 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_67-pthread_cond_wait_unknown_1_pos_bound2.i [2023-08-03 16:03:39,985 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32d7ed1e2/301878eb0a3942ffa2d0af3fcb0c329c/FLAGf72f02172 [2023-08-03 16:03:40,002 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32d7ed1e2/301878eb0a3942ffa2d0af3fcb0c329c [2023-08-03 16:03:40,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 16:03:40,008 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 16:03:40,011 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 16:03:40,011 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 16:03:40,014 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 16:03:40,015 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:03:40" (1/1) ... [2023-08-03 16:03:40,016 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347e613d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:40, skipping insertion in model container [2023-08-03 16:03:40,016 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:03:40" (1/1) ... [2023-08-03 16:03:40,068 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 16:03:40,199 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_67-pthread_cond_wait_unknown_1_pos_bound2.i[1103,1116] [2023-08-03 16:03:40,405 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:03:40,416 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 16:03:40,424 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_67-pthread_cond_wait_unknown_1_pos_bound2.i[1103,1116] [2023-08-03 16:03:40,430 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-03 16:03:40,431 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-03 16:03:40,439 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [730] [2023-08-03 16:03:40,461 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:03:40,553 WARN L667 CHandler]: The function sleep is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 16:03:40,557 INFO L206 MainTranslator]: Completed translation [2023-08-03 16:03:40,558 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:40 WrapperNode [2023-08-03 16:03:40,558 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 16:03:40,559 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 16:03:40,559 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 16:03:40,559 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 16:03:40,564 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:40" (1/1) ... [2023-08-03 16:03:40,584 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:40" (1/1) ... [2023-08-03 16:03:40,615 INFO L138 Inliner]: procedures = 354, calls = 38, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 106 [2023-08-03 16:03:40,616 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 16:03:40,617 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 16:03:40,617 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 16:03:40,617 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 16:03:40,624 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:40" (1/1) ... [2023-08-03 16:03:40,624 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:40" (1/1) ... [2023-08-03 16:03:40,628 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:40" (1/1) ... [2023-08-03 16:03:40,629 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:40" (1/1) ... [2023-08-03 16:03:40,639 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:40" (1/1) ... [2023-08-03 16:03:40,642 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:40" (1/1) ... [2023-08-03 16:03:40,646 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:40" (1/1) ... [2023-08-03 16:03:40,648 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:40" (1/1) ... [2023-08-03 16:03:40,653 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 16:03:40,656 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 16:03:40,657 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 16:03:40,657 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 16:03:40,658 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:40" (1/1) ... [2023-08-03 16:03:40,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:03:40,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:03:40,690 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 16:03:40,703 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 16:03:40,728 INFO L130 BoogieDeclarations]: Found specification of procedure sleep [2023-08-03 16:03:40,728 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2023-08-03 16:03:40,729 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2023-08-03 16:03:40,729 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2023-08-03 16:03:40,729 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2023-08-03 16:03:40,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 16:03:40,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 16:03:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 16:03:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 16:03:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 16:03:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 16:03:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 16:03:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 16:03:40,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 16:03:40,733 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 16:03:41,027 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 16:03:41,028 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 16:03:41,163 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 16:03:41,170 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 16:03:41,170 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-03 16:03:41,172 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:03:41 BoogieIcfgContainer [2023-08-03 16:03:41,172 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 16:03:41,174 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 16:03:41,174 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 16:03:41,177 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 16:03:41,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 04:03:40" (1/3) ... [2023-08-03 16:03:41,178 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2254b59c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:03:41, skipping insertion in model container [2023-08-03 16:03:41,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:40" (2/3) ... [2023-08-03 16:03:41,178 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2254b59c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:03:41, skipping insertion in model container [2023-08-03 16:03:41,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:03:41" (3/3) ... [2023-08-03 16:03:41,179 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_13-privatized_67-pthread_cond_wait_unknown_1_pos_bound2.i [2023-08-03 16:03:41,186 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 16:03:41,193 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 16:03:41,194 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 16:03:41,194 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 16:03:41,238 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-03 16:03:41,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 118 transitions, 258 flow [2023-08-03 16:03:41,335 INFO L124 PetriNetUnfolderBase]: 24/238 cut-off events. [2023-08-03 16:03:41,335 INFO L125 PetriNetUnfolderBase]: For 8/10 co-relation queries the response was YES. [2023-08-03 16:03:41,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 238 events. 24/238 cut-off events. For 8/10 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 779 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 125. Up to 8 conditions per place. [2023-08-03 16:03:41,341 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 118 transitions, 258 flow [2023-08-03 16:03:41,345 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 116 transitions, 248 flow [2023-08-03 16:03:41,351 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:03:41,359 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 114 places, 116 transitions, 248 flow [2023-08-03 16:03:41,362 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 114 places, 116 transitions, 248 flow [2023-08-03 16:03:41,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 116 transitions, 248 flow [2023-08-03 16:03:41,428 INFO L124 PetriNetUnfolderBase]: 20/226 cut-off events. [2023-08-03 16:03:41,428 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-03 16:03:41,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 226 events. 20/226 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 737 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 131. Up to 8 conditions per place. [2023-08-03 16:03:41,432 INFO L119 LiptonReduction]: Number of co-enabled transitions 2610 [2023-08-03 16:03:44,487 INFO L134 LiptonReduction]: Checked pairs total: 5244 [2023-08-03 16:03:44,487 INFO L136 LiptonReduction]: Total number of compositions: 94 [2023-08-03 16:03:44,501 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:03:44,507 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;@4e369e6b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:03:44,507 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 16:03:44,513 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:03:44,513 INFO L124 PetriNetUnfolderBase]: 1/21 cut-off events. [2023-08-03 16:03:44,514 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:03:44,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:03:44,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 16:03:44,515 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 16:03:44,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:03:44,520 INFO L85 PathProgramCache]: Analyzing trace with hash -212405211, now seen corresponding path program 1 times [2023-08-03 16:03:44,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:03:44,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393873863] [2023-08-03 16:03:44,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:03:44,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:03:44,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:03:44,849 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 16:03:44,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:03:44,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393873863] [2023-08-03 16:03:44,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393873863] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:03:44,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:03:44,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:03:44,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100819597] [2023-08-03 16:03:44,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:03:44,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:03:44,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:03:44,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:03:44,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:03:44,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 212 [2023-08-03 16:03:44,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states 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 16:03:44,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:03:44,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 212 [2023-08-03 16:03:44,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:03:45,090 INFO L124 PetriNetUnfolderBase]: 537/996 cut-off events. [2023-08-03 16:03:45,091 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-08-03 16:03:45,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1975 conditions, 996 events. 537/996 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4944 event pairs, 413 based on Foata normal form. 0/795 useless extension candidates. Maximal degree in co-relation 1761. Up to 929 conditions per place. [2023-08-03 16:03:45,101 INFO L140 encePairwiseOnDemand]: 208/212 looper letters, 31 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-08-03 16:03:45,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 37 transitions, 156 flow [2023-08-03 16:03:45,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:03:45,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:03:45,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 341 transitions. [2023-08-03 16:03:45,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5361635220125787 [2023-08-03 16:03:45,114 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 341 transitions. [2023-08-03 16:03:45,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 341 transitions. [2023-08-03 16:03:45,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:03:45,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 341 transitions. [2023-08-03 16:03:45,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states 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 16:03:45,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states 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 16:03:45,126 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states 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 16:03:45,127 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 82 flow. Second operand 3 states and 341 transitions. [2023-08-03 16:03:45,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 37 transitions, 156 flow [2023-08-03 16:03:45,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 37 transitions, 156 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 16:03:45,133 INFO L231 Difference]: Finished difference. Result has 37 places, 31 transitions, 86 flow [2023-08-03 16:03:45,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=37, PETRI_TRANSITIONS=31} [2023-08-03 16:03:45,137 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2023-08-03 16:03:45,138 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 86 flow [2023-08-03 16:03:45,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states 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 16:03:45,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:03:45,138 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 16:03:45,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 16:03:45,139 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 16:03:45,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:03:45,139 INFO L85 PathProgramCache]: Analyzing trace with hash -209460140, now seen corresponding path program 1 times [2023-08-03 16:03:45,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:03:45,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041179436] [2023-08-03 16:03:45,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:03:45,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:03:45,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:03:45,171 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 16:03:45,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:03:45,215 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 16:03:45,215 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 16:03:45,216 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 16:03:45,218 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-03 16:03:45,219 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-03 16:03:45,219 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-03 16:03:45,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 16:03:45,219 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 16:03:45,222 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 16:03:45,222 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 16:03:45,274 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-03 16:03:45,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 151 transitions, 350 flow [2023-08-03 16:03:45,356 INFO L124 PetriNetUnfolderBase]: 107/729 cut-off events. [2023-08-03 16:03:45,356 INFO L125 PetriNetUnfolderBase]: For 72/78 co-relation queries the response was YES. [2023-08-03 16:03:45,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 826 conditions, 729 events. 107/729 cut-off events. For 72/78 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3860 event pairs, 1 based on Foata normal form. 0/629 useless extension candidates. Maximal degree in co-relation 445. Up to 32 conditions per place. [2023-08-03 16:03:45,361 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 151 transitions, 350 flow [2023-08-03 16:03:45,364 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 151 transitions, 350 flow [2023-08-03 16:03:45,364 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:03:45,364 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 146 places, 151 transitions, 350 flow [2023-08-03 16:03:45,364 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 146 places, 151 transitions, 350 flow [2023-08-03 16:03:45,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 151 transitions, 350 flow [2023-08-03 16:03:45,429 INFO L124 PetriNetUnfolderBase]: 107/729 cut-off events. [2023-08-03 16:03:45,429 INFO L125 PetriNetUnfolderBase]: For 72/78 co-relation queries the response was YES. [2023-08-03 16:03:45,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 826 conditions, 729 events. 107/729 cut-off events. For 72/78 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3860 event pairs, 1 based on Foata normal form. 0/629 useless extension candidates. Maximal degree in co-relation 445. Up to 32 conditions per place. [2023-08-03 16:03:45,449 INFO L119 LiptonReduction]: Number of co-enabled transitions 7692 [2023-08-03 16:03:48,771 INFO L134 LiptonReduction]: Checked pairs total: 21998 [2023-08-03 16:03:48,771 INFO L136 LiptonReduction]: Total number of compositions: 108 [2023-08-03 16:03:48,781 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:03:48,787 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;@4e369e6b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:03:48,788 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-03 16:03:48,792 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:03:48,793 INFO L124 PetriNetUnfolderBase]: 1/21 cut-off events. [2023-08-03 16:03:48,795 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:03:48,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:03:48,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 16:03:48,795 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 16:03:48,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:03:48,796 INFO L85 PathProgramCache]: Analyzing trace with hash -222382427, now seen corresponding path program 1 times [2023-08-03 16:03:48,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:03:48,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032257722] [2023-08-03 16:03:48,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:03:48,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:03:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:03:48,873 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 16:03:48,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:03:48,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032257722] [2023-08-03 16:03:48,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032257722] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:03:48,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:03:48,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:03:48,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414071739] [2023-08-03 16:03:48,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:03:48,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:03:48,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:03:48,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:03:48,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:03:48,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 259 [2023-08-03 16:03:48,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 55 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states 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 16:03:48,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:03:48,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 259 [2023-08-03 16:03:48,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:03:53,245 INFO L124 PetriNetUnfolderBase]: 38425/54310 cut-off events. [2023-08-03 16:03:53,245 INFO L125 PetriNetUnfolderBase]: For 5058/5058 co-relation queries the response was YES. [2023-08-03 16:03:53,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109657 conditions, 54310 events. 38425/54310 cut-off events. For 5058/5058 co-relation queries the response was YES. Maximal size of possible extension queue 1913. Compared 373722 event pairs, 27221 based on Foata normal form. 1755/45854 useless extension candidates. Maximal degree in co-relation 23743. Up to 52301 conditions per place. [2023-08-03 16:03:53,488 INFO L140 encePairwiseOnDemand]: 255/259 looper letters, 47 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2023-08-03 16:03:53,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 60 transitions, 266 flow [2023-08-03 16:03:53,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:03:53,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:03:53,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 432 transitions. [2023-08-03 16:03:53,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.555984555984556 [2023-08-03 16:03:53,494 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 432 transitions. [2023-08-03 16:03:53,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 432 transitions. [2023-08-03 16:03:53,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:03:53,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 432 transitions. [2023-08-03 16:03:53,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states 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 16:03:53,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states 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 16:03:53,501 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states 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 16:03:53,501 INFO L175 Difference]: Start difference. First operand has 55 places, 55 transitions, 158 flow. Second operand 3 states and 432 transitions. [2023-08-03 16:03:53,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 60 transitions, 266 flow [2023-08-03 16:03:53,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 60 transitions, 266 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 16:03:53,508 INFO L231 Difference]: Finished difference. Result has 58 places, 55 transitions, 168 flow [2023-08-03 16:03:53,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=58, PETRI_TRANSITIONS=55} [2023-08-03 16:03:53,509 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2023-08-03 16:03:53,509 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 55 transitions, 168 flow [2023-08-03 16:03:53,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states 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 16:03:53,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:03:53,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:03:53,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 16:03:53,510 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 16:03:53,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:03:53,511 INFO L85 PathProgramCache]: Analyzing trace with hash 663931870, now seen corresponding path program 1 times [2023-08-03 16:03:53,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:03:53,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374504131] [2023-08-03 16:03:53,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:03:53,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:03:53,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:03:53,614 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 16:03:53,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:03:53,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374504131] [2023-08-03 16:03:53,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374504131] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:03:53,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559812011] [2023-08-03 16:03:53,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:03:53,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:03:53,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:03:53,625 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 16:03:53,648 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 16:03:53,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:03:53,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 16:03:53,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:03:53,813 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 16:03:53,814 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:03:53,830 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 16:03:53,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559812011] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:03:53,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:03:53,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 16:03:53,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598360875] [2023-08-03 16:03:53,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:03:53,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:03:53,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:03:53,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:03:53,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:03:53,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 259 [2023-08-03 16:03:53,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 55 transitions, 168 flow. Second operand has 5 states, 5 states have (on average 128.6) internal successors, (643), 5 states have internal predecessors, (643), 0 states have call successors, (0), 0 states 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 16:03:53,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:03:53,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 259 [2023-08-03 16:03:53,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:03:57,172 INFO L124 PetriNetUnfolderBase]: 36629/51544 cut-off events. [2023-08-03 16:03:57,172 INFO L125 PetriNetUnfolderBase]: For 4786/4786 co-relation queries the response was YES. [2023-08-03 16:03:57,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104238 conditions, 51544 events. 36629/51544 cut-off events. For 4786/4786 co-relation queries the response was YES. Maximal size of possible extension queue 1781. Compared 349003 event pairs, 23655 based on Foata normal form. 5/41904 useless extension candidates. Maximal degree in co-relation 28762. Up to 49655 conditions per place. [2023-08-03 16:03:57,387 INFO L140 encePairwiseOnDemand]: 255/259 looper letters, 53 selfloop transitions, 4 changer transitions 0/68 dead transitions. [2023-08-03 16:03:57,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 68 transitions, 308 flow [2023-08-03 16:03:57,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:03:57,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:03:57,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 562 transitions. [2023-08-03 16:03:57,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5424710424710425 [2023-08-03 16:03:57,390 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 562 transitions. [2023-08-03 16:03:57,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 562 transitions. [2023-08-03 16:03:57,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:03:57,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 562 transitions. [2023-08-03 16:03:57,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 140.5) internal successors, (562), 4 states have internal predecessors, (562), 0 states have call successors, (0), 0 states 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 16:03:57,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 259.0) internal successors, (1295), 5 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states 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 16:03:57,395 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 259.0) internal successors, (1295), 5 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states 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 16:03:57,395 INFO L175 Difference]: Start difference. First operand has 58 places, 55 transitions, 168 flow. Second operand 4 states and 562 transitions. [2023-08-03 16:03:57,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 68 transitions, 308 flow [2023-08-03 16:03:57,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 68 transitions, 306 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:03:57,404 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 186 flow [2023-08-03 16:03:57,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2023-08-03 16:03:57,405 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2023-08-03 16:03:57,405 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 186 flow [2023-08-03 16:03:57,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 128.6) internal successors, (643), 5 states have internal predecessors, (643), 0 states have call successors, (0), 0 states 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 16:03:57,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:03:57,406 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 16:03:57,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 16:03:57,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:03:57,612 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 16:03:57,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:03:57,613 INFO L85 PathProgramCache]: Analyzing trace with hash -706663886, now seen corresponding path program 1 times [2023-08-03 16:03:57,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:03:57,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613292501] [2023-08-03 16:03:57,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:03:57,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:03:57,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:03:57,768 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 16:03:57,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:03:57,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613292501] [2023-08-03 16:03:57,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613292501] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:03:57,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828172885] [2023-08-03 16:03:57,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:03:57,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:03:57,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:03:57,771 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 16:03:57,774 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 16:03:57,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:03:57,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 16:03:57,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:03:57,913 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 16:03:57,913 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 16:03:57,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828172885] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:03:57,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 16:03:57,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 16:03:57,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516106140] [2023-08-03 16:03:57,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:03:57,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:03:57,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:03:57,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:03:57,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 16:03:57,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 259 [2023-08-03 16:03:57,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 186 flow. Second operand has 5 states, 5 states have (on average 127.6) internal successors, (638), 5 states have internal predecessors, (638), 0 states have call successors, (0), 0 states 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 16:03:57,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:03:57,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 259 [2023-08-03 16:03:57,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:00,784 INFO L124 PetriNetUnfolderBase]: 36598/51473 cut-off events. [2023-08-03 16:04:00,784 INFO L125 PetriNetUnfolderBase]: For 4951/4951 co-relation queries the response was YES. [2023-08-03 16:04:01,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104165 conditions, 51473 events. 36598/51473 cut-off events. For 4951/4951 co-relation queries the response was YES. Maximal size of possible extension queue 1781. Compared 348109 event pairs, 23650 based on Foata normal form. 20/41848 useless extension candidates. Maximal degree in co-relation 23735. Up to 49654 conditions per place. [2023-08-03 16:04:01,133 INFO L140 encePairwiseOnDemand]: 256/259 looper letters, 53 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2023-08-03 16:04:01,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 66 transitions, 312 flow [2023-08-03 16:04:01,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 16:04:01,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 16:04:01,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 687 transitions. [2023-08-03 16:04:01,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5305019305019305 [2023-08-03 16:04:01,137 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 687 transitions. [2023-08-03 16:04:01,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 687 transitions. [2023-08-03 16:04:01,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:01,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 687 transitions. [2023-08-03 16:04:01,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 137.4) internal successors, (687), 5 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:01,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:01,143 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:01,143 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 186 flow. Second operand 5 states and 687 transitions. [2023-08-03 16:04:01,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 66 transitions, 312 flow [2023-08-03 16:04:01,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 66 transitions, 300 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-03 16:04:01,150 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 168 flow [2023-08-03 16:04:01,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=168, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2023-08-03 16:04:01,152 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 6 predicate places. [2023-08-03 16:04:01,152 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 168 flow [2023-08-03 16:04:01,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.6) internal successors, (638), 5 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:01,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:01,153 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:01,160 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-03 16:04:01,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:04:01,358 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 16:04:01,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:01,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1700317558, now seen corresponding path program 1 times [2023-08-03 16:04:01,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:01,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843663835] [2023-08-03 16:04:01,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:01,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:01,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:01,480 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:04:01,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:01,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843663835] [2023-08-03 16:04:01,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843663835] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:04:01,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:04:01,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 16:04:01,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385617308] [2023-08-03 16:04:01,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:04:01,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:04:01,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:01,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:04:01,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:04:01,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 259 [2023-08-03 16:04:01,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:01,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:01,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 259 [2023-08-03 16:04:01,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:07,848 INFO L124 PetriNetUnfolderBase]: 80106/115746 cut-off events. [2023-08-03 16:04:07,849 INFO L125 PetriNetUnfolderBase]: For 8905/8905 co-relation queries the response was YES. [2023-08-03 16:04:08,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230196 conditions, 115746 events. 80106/115746 cut-off events. For 8905/8905 co-relation queries the response was YES. Maximal size of possible extension queue 3553. Compared 874414 event pairs, 42110 based on Foata normal form. 0/101403 useless extension candidates. Maximal degree in co-relation 134045. Up to 69510 conditions per place. [2023-08-03 16:04:08,475 INFO L140 encePairwiseOnDemand]: 249/259 looper letters, 82 selfloop transitions, 7 changer transitions 0/96 dead transitions. [2023-08-03 16:04:08,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 96 transitions, 478 flow [2023-08-03 16:04:08,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:04:08,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:04:08,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 462 transitions. [2023-08-03 16:04:08,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5945945945945946 [2023-08-03 16:04:08,477 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 462 transitions. [2023-08-03 16:04:08,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 462 transitions. [2023-08-03 16:04:08,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:08,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 462 transitions. [2023-08-03 16:04:08,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:08,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:08,481 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:08,481 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 168 flow. Second operand 3 states and 462 transitions. [2023-08-03 16:04:08,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 96 transitions, 478 flow [2023-08-03 16:04:08,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 96 transitions, 470 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 16:04:08,485 INFO L231 Difference]: Finished difference. Result has 62 places, 60 transitions, 221 flow [2023-08-03 16:04:08,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=221, PETRI_PLACES=62, PETRI_TRANSITIONS=60} [2023-08-03 16:04:08,486 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2023-08-03 16:04:08,486 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 60 transitions, 221 flow [2023-08-03 16:04:08,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:08,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:08,487 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:08,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 16:04:08,487 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 16:04:08,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:08,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1671889689, now seen corresponding path program 1 times [2023-08-03 16:04:08,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:08,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681407000] [2023-08-03 16:04:08,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:08,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:08,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:08,620 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:04:08,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:08,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681407000] [2023-08-03 16:04:08,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681407000] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:04:08,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:04:08,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 16:04:08,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598093344] [2023-08-03 16:04:08,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:04:08,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:04:08,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:08,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:04:08,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:04:08,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 259 [2023-08-03 16:04:08,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 221 flow. Second operand has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:08,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:08,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 259 [2023-08-03 16:04:08,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:09,637 INFO L124 PetriNetUnfolderBase]: 9070/17313 cut-off events. [2023-08-03 16:04:09,637 INFO L125 PetriNetUnfolderBase]: For 5499/5499 co-relation queries the response was YES. [2023-08-03 16:04:09,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39446 conditions, 17313 events. 9070/17313 cut-off events. For 5499/5499 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 147380 event pairs, 1867 based on Foata normal form. 7175/21860 useless extension candidates. Maximal degree in co-relation 22838. Up to 11655 conditions per place. [2023-08-03 16:04:09,687 INFO L140 encePairwiseOnDemand]: 247/259 looper letters, 61 selfloop transitions, 12 changer transitions 0/84 dead transitions. [2023-08-03 16:04:09,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 84 transitions, 460 flow [2023-08-03 16:04:09,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:04:09,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:04:09,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 428 transitions. [2023-08-03 16:04:09,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5508365508365508 [2023-08-03 16:04:09,690 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 428 transitions. [2023-08-03 16:04:09,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 428 transitions. [2023-08-03 16:04:09,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:09,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 428 transitions. [2023-08-03 16:04:09,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:09,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:09,693 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:09,693 INFO L175 Difference]: Start difference. First operand has 62 places, 60 transitions, 221 flow. Second operand 3 states and 428 transitions. [2023-08-03 16:04:09,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 84 transitions, 460 flow [2023-08-03 16:04:09,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 84 transitions, 446 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 16:04:09,715 INFO L231 Difference]: Finished difference. Result has 62 places, 60 transitions, 231 flow [2023-08-03 16:04:09,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=231, PETRI_PLACES=62, PETRI_TRANSITIONS=60} [2023-08-03 16:04:09,716 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2023-08-03 16:04:09,716 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 60 transitions, 231 flow [2023-08-03 16:04:09,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:09,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:09,716 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:09,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 16:04:09,717 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 16:04:09,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:09,720 INFO L85 PathProgramCache]: Analyzing trace with hash -368736861, now seen corresponding path program 1 times [2023-08-03 16:04:09,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:09,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564720412] [2023-08-03 16:04:09,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:09,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:09,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:04:09,749 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 16:04:09,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:04:09,781 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 16:04:09,781 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 16:04:09,781 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-08-03 16:04:09,782 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-08-03 16:04:09,782 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-08-03 16:04:09,782 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-08-03 16:04:09,782 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-08-03 16:04:09,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-03 16:04:09,782 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-03 16:04:09,786 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 16:04:09,786 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 16:04:09,844 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 04:04:09 BasicIcfg [2023-08-03 16:04:09,844 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 16:04:09,845 INFO L158 Benchmark]: Toolchain (without parser) took 29836.77ms. Allocated memory was 379.6MB in the beginning and 11.0GB in the end (delta: 10.6GB). Free memory was 320.0MB in the beginning and 9.1GB in the end (delta: -8.8GB). Peak memory consumption was 1.9GB. Max. memory is 16.0GB. [2023-08-03 16:04:09,845 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 379.6MB. Free memory was 328.5MB in the beginning and 328.3MB in the end (delta: 124.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 16:04:09,845 INFO L158 Benchmark]: CACSL2BoogieTranslator took 546.90ms. Allocated memory was 379.6MB in the beginning and 534.8MB in the end (delta: 155.2MB). Free memory was 319.8MB in the beginning and 485.8MB in the end (delta: -165.9MB). Peak memory consumption was 36.0MB. Max. memory is 16.0GB. [2023-08-03 16:04:09,846 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.25ms. Allocated memory is still 534.8MB. Free memory was 485.8MB in the beginning and 483.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 16:04:09,846 INFO L158 Benchmark]: Boogie Preprocessor took 36.57ms. Allocated memory is still 534.8MB. Free memory was 483.1MB in the beginning and 480.3MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-03 16:04:09,846 INFO L158 Benchmark]: RCFGBuilder took 515.56ms. Allocated memory is still 534.8MB. Free memory was 480.3MB in the beginning and 459.3MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-03 16:04:09,846 INFO L158 Benchmark]: TraceAbstraction took 28670.39ms. Allocated memory was 534.8MB in the beginning and 11.0GB in the end (delta: 10.5GB). Free memory was 458.6MB in the beginning and 9.1GB in the end (delta: -8.6GB). Peak memory consumption was 1.8GB. Max. memory is 16.0GB. [2023-08-03 16:04:09,848 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 379.6MB. Free memory was 328.5MB in the beginning and 328.3MB in the end (delta: 124.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 546.90ms. Allocated memory was 379.6MB in the beginning and 534.8MB in the end (delta: 155.2MB). Free memory was 319.8MB in the beginning and 485.8MB in the end (delta: -165.9MB). Peak memory consumption was 36.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 57.25ms. Allocated memory is still 534.8MB. Free memory was 485.8MB in the beginning and 483.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 36.57ms. Allocated memory is still 534.8MB. Free memory was 483.1MB in the beginning and 480.3MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * RCFGBuilder took 515.56ms. Allocated memory is still 534.8MB. Free memory was 480.3MB in the beginning and 459.3MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 28670.39ms. Allocated memory was 534.8MB in the beginning and 11.0GB in the end (delta: 10.5GB). Free memory was 458.6MB in the beginning and 9.1GB in the end (delta: -8.6GB). Peak memory consumption was 1.8GB. 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] - GenericResultAtLocation [Line: 730]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [730] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1s, 114 PlacesBefore, 35 PlacesAfterwards, 116 TransitionsBefore, 33 TransitionsAfterwards, 2610 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 4 ChoiceCompositions, 94 TotalNumberOfCompositions, 5244 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2900, independent: 2770, independent conditional: 0, independent unconditional: 2770, dependent: 130, dependent conditional: 0, dependent unconditional: 130, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1334, independent: 1313, independent conditional: 0, independent unconditional: 1313, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2900, independent: 1457, independent conditional: 0, independent unconditional: 1457, dependent: 109, dependent conditional: 0, dependent unconditional: 109, unknown: 1334, unknown conditional: 0, unknown unconditional: 1334] , Statistics on independence cache: Total cache size (in pairs): 129, Positive cache size: 114, Positive conditional cache size: 0, Positive unconditional cache size: 114, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.4s, 146 PlacesBefore, 55 PlacesAfterwards, 151 TransitionsBefore, 55 TransitionsAfterwards, 7692 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 59 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 5 ChoiceCompositions, 108 TotalNumberOfCompositions, 21998 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 10085, independent: 9818, independent conditional: 0, independent unconditional: 9818, dependent: 267, dependent conditional: 0, dependent unconditional: 267, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3641, independent: 3598, independent conditional: 0, independent unconditional: 3598, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 10085, independent: 6220, independent conditional: 0, independent unconditional: 6220, dependent: 224, dependent conditional: 0, dependent unconditional: 224, unknown: 3641, unknown conditional: 0, unknown unconditional: 3641] , Statistics on independence cache: Total cache size (in pairs): 317, Positive cache size: 295, Positive conditional cache size: 0, Positive unconditional cache size: 295, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1351] 0 int g; [L1352] 0 pthread_mutex_t mut = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L1353] 0 pthread_cond_t cond = { { {0}, {0}, {0, 0}, {0, 0}, 0, 0, {0, 0} } }; [L1373] 0 pthread_t t1[2]; [L1374] 0 pthread_t t2[2]; [L1375] 0 int asdf=0; VAL [\old(argc)=1150, argc=1150, argv={1151:1152}, argv={1151:1152}, asdf=0, cond={4:0}, g=0, mut={3:0}, t1={6:0}, t2={5:0}] [L1375] COND TRUE 0 asdf<2 [L1375] FCALL, FORK 0 pthread_create(&t1[asdf],((void *)0),f1,((void *)0)) VAL [\old(argc)=1150, argc=1150, argv={1151:1152}, argv={1151:1152}, asdf=0, cond={4:0}, g=0, mut={3:0}, pthread_create(&t1[asdf],((void *)0),f1,((void *)0))=-3, ptr={0:0}, t1={6:0}, t2={5:0}] [L1375] 0 asdf++ VAL [\old(argc)=1150, argc=1150, argv={1151:1152}, argv={1151:1152}, asdf=1, cond={4:0}, g=0, mut={3:0}, ptr={0:0}, t1={6:0}, t2={5:0}] [L1375] COND TRUE 0 asdf<2 [L1356] 1 g = 1 VAL [cond={4:0}, g=1, mut={3:0}, ptr={0:0}, ptr={0:0}] [L1375] FCALL, FORK 0 pthread_create(&t1[asdf],((void *)0),f1,((void *)0)) VAL [\old(argc)=1150, argc=1150, argv={1151:1152}, argv={1151:1152}, asdf=1, cond={4:0}, g=1, mut={3:0}, pthread_create(&t1[asdf],((void *)0),f1,((void *)0))=-2, ptr={0:0}, ptr={0:0}, t1={6:0}, t2={5:0}] [L1375] 0 asdf++ VAL [\old(argc)=1150, argc=1150, argv={1151:1152}, argv={1151:1152}, asdf=2, cond={4:0}, g=1, mut={3:0}, ptr={0:0}, ptr={0:0}, t1={6:0}, t2={5:0}] [L1375] COND FALSE 0 !(asdf<2) [L1377] 0 int asdf=0; VAL [\old(argc)=1150, argc=1150, argv={1151:1152}, argv={1151:1152}, asdf=0, asdf=2, cond={4:0}, g=1, mut={3:0}, ptr={0:0}, ptr={0:0}, t1={6:0}, t2={5:0}] [L1377] COND TRUE 0 asdf<2 [L1377] FCALL, FORK 0 pthread_create(&t2[asdf],((void *)0),f2,((void *)0)) VAL [\old(argc)=1150, argc=1150, argv={1151:1152}, argv={1151:1152}, asdf=0, asdf=2, cond={4:0}, g=1, mut={3:0}, pthread_create(&t2[asdf],((void *)0),f2,((void *)0))=-1, ptr={0:0}, ptr={0:0}, t1={6:0}, t2={5:0}] [L1365] CALL 3 __VERIFIER_assert(g == 0) [L19] COND TRUE 3 !(cond) [L19] 3 reach_error() VAL [\old(cond)=0, cond=0, cond={4:0}, g=1, mut={3:0}, ptr={0:0}, ptr={0:0}] - UnprovableResult [Line: 1375]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1377]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 138 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.0s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 24 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 64 IncrementalHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 7 mSDtfsCounter, 64 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=86occurred in iteration=1, InterpolantAutomatonStates: 3, 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, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 7 procedures, 166 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: 24.5s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 19.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 222 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 152 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 35 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 591 IncrementalHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 35 mSolverCounterUnsat, 22 mSDtfsCounter, 591 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=231occurred in iteration=5, InterpolantAutomatonStates: 18, 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, 0.6s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 216 SizeOfPredicates, 0 NumberOfNonLiveVariables, 300 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 23/31 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-03 16:04:09,872 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...