/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/pthread-deagle_arithmetic_prog_bad_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 16:11:55,261 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 16:11:55,336 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 16:11:55,342 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 16:11:55,343 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 16:11:55,343 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 16:11:55,344 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 16:11:55,378 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 16:11:55,378 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 16:11:55,382 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 16:11:55,382 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 16:11:55,382 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 16:11:55,383 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 16:11:55,384 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 16:11:55,385 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 16:11:55,385 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 16:11:55,385 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 16:11:55,385 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 16:11:55,386 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 16:11:55,386 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 16:11:55,386 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 16:11:55,386 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 16:11:55,386 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 16:11:55,387 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 16:11:55,388 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 16:11:55,388 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 16:11:55,388 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 16:11:55,389 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 16:11:55,389 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 16:11:55,389 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 16:11:55,390 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:11:55,390 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 16:11:55,390 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 16:11:55,390 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 16:11:55,390 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 16:11:55,391 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 16:11:55,391 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 16:11:55,391 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 16:11:55,391 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 16:11:55,391 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 16:11:55,391 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 16:11:55,392 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 16:11:55,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 16:11:55,623 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 16:11:55,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 16:11:55,626 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 16:11:55,627 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 16:11:55,628 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-deagle_arithmetic_prog_bad_bound2.i [2023-08-03 16:11:56,861 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 16:11:57,117 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 16:11:57,117 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-deagle_arithmetic_prog_bad_bound2.i [2023-08-03 16:11:57,131 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef528bd3b/63dde60842f94dbb8e340615e3160ad6/FLAG7df42d00a [2023-08-03 16:11:57,144 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef528bd3b/63dde60842f94dbb8e340615e3160ad6 [2023-08-03 16:11:57,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 16:11:57,148 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 16:11:57,151 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 16:11:57,151 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 16:11:57,154 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 16:11:57,155 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:11:57" (1/1) ... [2023-08-03 16:11:57,155 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79faf348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:11:57, skipping insertion in model container [2023-08-03 16:11:57,156 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:11:57" (1/1) ... [2023-08-03 16:11:57,205 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 16:11:57,575 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-deagle_arithmetic_prog_bad_bound2.i[39920,39933] [2023-08-03 16:11:57,576 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:11:57,592 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 16:11:57,611 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [218] [2023-08-03 16:11:57,618 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [219] [2023-08-03 16:11:57,626 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [730] [2023-08-03 16:11:57,629 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned long [871] [2023-08-03 16:11:57,640 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-deagle_arithmetic_prog_bad_bound2.i[39920,39933] [2023-08-03 16:11:57,649 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:11:57,697 INFO L206 MainTranslator]: Completed translation [2023-08-03 16:11:57,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:11:57 WrapperNode [2023-08-03 16:11:57,698 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 16:11:57,699 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 16:11:57,700 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 16:11:57,700 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 16:11:57,705 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:11:57" (1/1) ... [2023-08-03 16:11:57,719 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:11:57" (1/1) ... [2023-08-03 16:11:57,739 INFO L138 Inliner]: procedures = 243, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 113 [2023-08-03 16:11:57,740 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 16:11:57,740 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 16:11:57,740 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 16:11:57,740 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 16:11:57,751 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:11:57" (1/1) ... [2023-08-03 16:11:57,752 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:11:57" (1/1) ... [2023-08-03 16:11:57,755 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:11:57" (1/1) ... [2023-08-03 16:11:57,755 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:11:57" (1/1) ... [2023-08-03 16:11:57,761 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:11:57" (1/1) ... [2023-08-03 16:11:57,765 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:11:57" (1/1) ... [2023-08-03 16:11:57,767 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:11:57" (1/1) ... [2023-08-03 16:11:57,768 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:11:57" (1/1) ... [2023-08-03 16:11:57,771 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 16:11:57,772 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 16:11:57,772 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 16:11:57,772 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 16:11:57,773 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:11:57" (1/1) ... [2023-08-03 16:11:57,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:11:57,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:11:57,802 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 16:11:57,804 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 16:11:57,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 16:11:57,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 16:11:57,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-08-03 16:11:57,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 16:11:57,828 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 16:11:57,828 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 16:11:57,828 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 16:11:57,828 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 16:11:57,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 16:11:57,829 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 16:11:57,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 16:11:57,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 16:11:57,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 16:11:57,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 16:11:57,830 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 16:11:57,939 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 16:11:57,941 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 16:11:58,223 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 16:11:58,231 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 16:11:58,231 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-08-03 16:11:58,233 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:11:58 BoogieIcfgContainer [2023-08-03 16:11:58,233 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 16:11:58,235 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 16:11:58,235 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 16:11:58,238 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 16:11:58,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 04:11:57" (1/3) ... [2023-08-03 16:11:58,239 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c038ba0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:11:58, skipping insertion in model container [2023-08-03 16:11:58,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:11:57" (2/3) ... [2023-08-03 16:11:58,240 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c038ba0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:11:58, skipping insertion in model container [2023-08-03 16:11:58,240 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:11:58" (3/3) ... [2023-08-03 16:11:58,241 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-deagle_arithmetic_prog_bad_bound2.i [2023-08-03 16:11:58,248 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 16:11:58,255 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 16:11:58,256 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 16:11:58,256 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 16:11:58,327 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-03 16:11:58,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 161 transitions, 344 flow [2023-08-03 16:11:58,454 INFO L124 PetriNetUnfolderBase]: 42/311 cut-off events. [2023-08-03 16:11:58,454 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 16:11:58,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 311 events. 42/311 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1143 event pairs, 0 based on Foata normal form. 0/259 useless extension candidates. Maximal degree in co-relation 168. Up to 12 conditions per place. [2023-08-03 16:11:58,467 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 161 transitions, 344 flow [2023-08-03 16:11:58,472 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 161 transitions, 344 flow [2023-08-03 16:11:58,475 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:11:58,482 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 148 places, 161 transitions, 344 flow [2023-08-03 16:11:58,485 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 148 places, 161 transitions, 344 flow [2023-08-03 16:11:58,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 161 transitions, 344 flow [2023-08-03 16:11:58,566 INFO L124 PetriNetUnfolderBase]: 42/311 cut-off events. [2023-08-03 16:11:58,567 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 16:11:58,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 311 events. 42/311 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1143 event pairs, 0 based on Foata normal form. 0/259 useless extension candidates. Maximal degree in co-relation 168. Up to 12 conditions per place. [2023-08-03 16:11:58,579 INFO L119 LiptonReduction]: Number of co-enabled transitions 6348 [2023-08-03 16:12:03,662 INFO L134 LiptonReduction]: Checked pairs total: 15226 [2023-08-03 16:12:03,662 INFO L136 LiptonReduction]: Total number of compositions: 129 [2023-08-03 16:12:03,675 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:12:03,681 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;@7022a9c0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:12:03,681 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 16:12:03,685 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:12:03,685 INFO L124 PetriNetUnfolderBase]: 1/21 cut-off events. [2023-08-03 16:12:03,685 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:12:03,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:12:03,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 16:12:03,686 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:12:03,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:12:03,691 INFO L85 PathProgramCache]: Analyzing trace with hash 869736262, now seen corresponding path program 1 times [2023-08-03 16:12:03,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:12:03,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726930529] [2023-08-03 16:12:03,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:12:03,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:12:03,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:12:04,003 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 16:12:04,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:12:04,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726930529] [2023-08-03 16:12:04,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726930529] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:12:04,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:12:04,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:12:04,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371323898] [2023-08-03 16:12:04,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:12:04,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:12:04,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:12:04,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:12:04,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:12:04,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 290 [2023-08-03 16:12:04,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 50 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:04,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:12:04,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 290 [2023-08-03 16:12:04,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:12:04,276 INFO L124 PetriNetUnfolderBase]: 889/1586 cut-off events. [2023-08-03 16:12:04,276 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-08-03 16:12:04,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2962 conditions, 1586 events. 889/1586 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 8825 event pairs, 342 based on Foata normal form. 133/1312 useless extension candidates. Maximal degree in co-relation 2627. Up to 1316 conditions per place. [2023-08-03 16:12:04,288 INFO L140 encePairwiseOnDemand]: 285/290 looper letters, 38 selfloop transitions, 2 changer transitions 2/55 dead transitions. [2023-08-03 16:12:04,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 55 transitions, 216 flow [2023-08-03 16:12:04,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:12:04,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:12:04,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 469 transitions. [2023-08-03 16:12:04,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.539080459770115 [2023-08-03 16:12:04,310 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 469 transitions. [2023-08-03 16:12:04,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 469 transitions. [2023-08-03 16:12:04,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:12:04,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 469 transitions. [2023-08-03 16:12:04,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:04,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:04,328 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:04,330 INFO L175 Difference]: Start difference. First operand has 44 places, 50 transitions, 122 flow. Second operand 3 states and 469 transitions. [2023-08-03 16:12:04,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 55 transitions, 216 flow [2023-08-03 16:12:04,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 55 transitions, 216 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 16:12:04,337 INFO L231 Difference]: Finished difference. Result has 47 places, 46 transitions, 122 flow [2023-08-03 16:12:04,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=47, PETRI_TRANSITIONS=46} [2023-08-03 16:12:04,343 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 3 predicate places. [2023-08-03 16:12:04,343 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 46 transitions, 122 flow [2023-08-03 16:12:04,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:04,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:12:04,344 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 16:12:04,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 16:12:04,345 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:12:04,346 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:12:04,347 INFO L85 PathProgramCache]: Analyzing trace with hash 895305292, now seen corresponding path program 1 times [2023-08-03 16:12:04,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:12:04,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700933842] [2023-08-03 16:12:04,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:12:04,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:12:04,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:12:04,380 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 16:12:04,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:12:04,415 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 16:12:04,415 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 16:12:04,417 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 16:12:04,418 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 16:12:04,419 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 16:12:04,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 16:12:04,419 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 16:12:04,421 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 16:12:04,422 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 16:12:04,450 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-03 16:12:04,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 216 transitions, 480 flow [2023-08-03 16:12:04,566 INFO L124 PetriNetUnfolderBase]: 165/939 cut-off events. [2023-08-03 16:12:04,567 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-03 16:12:04,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1036 conditions, 939 events. 165/939 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5084 event pairs, 2 based on Foata normal form. 0/771 useless extension candidates. Maximal degree in co-relation 568. Up to 48 conditions per place. [2023-08-03 16:12:04,578 INFO L82 GeneralOperation]: Start removeDead. Operand has 195 places, 216 transitions, 480 flow [2023-08-03 16:12:04,585 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 195 places, 216 transitions, 480 flow [2023-08-03 16:12:04,585 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:12:04,585 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 195 places, 216 transitions, 480 flow [2023-08-03 16:12:04,586 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 195 places, 216 transitions, 480 flow [2023-08-03 16:12:04,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 216 transitions, 480 flow [2023-08-03 16:12:04,690 INFO L124 PetriNetUnfolderBase]: 165/939 cut-off events. [2023-08-03 16:12:04,690 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-03 16:12:04,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1036 conditions, 939 events. 165/939 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5084 event pairs, 2 based on Foata normal form. 0/771 useless extension candidates. Maximal degree in co-relation 568. Up to 48 conditions per place. [2023-08-03 16:12:04,727 INFO L119 LiptonReduction]: Number of co-enabled transitions 18472 [2023-08-03 16:12:09,948 INFO L134 LiptonReduction]: Checked pairs total: 53886 [2023-08-03 16:12:09,949 INFO L136 LiptonReduction]: Total number of compositions: 157 [2023-08-03 16:12:09,951 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:12:09,952 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;@7022a9c0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:12:09,952 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 16:12:09,955 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:12:09,955 INFO L124 PetriNetUnfolderBase]: 1/20 cut-off events. [2023-08-03 16:12:09,955 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:12:09,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:12:09,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 16:12:09,956 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:12:09,956 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:12:09,956 INFO L85 PathProgramCache]: Analyzing trace with hash 580675974, now seen corresponding path program 1 times [2023-08-03 16:12:09,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:12:09,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927689541] [2023-08-03 16:12:09,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:12:09,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:12:09,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:12:10,013 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 16:12:10,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:12:10,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927689541] [2023-08-03 16:12:10,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927689541] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:12:10,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:12:10,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:12:10,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698325652] [2023-08-03 16:12:10,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:12:10,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:12:10,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:12:10,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:12:10,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:12:10,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 373 [2023-08-03 16:12:10,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 82 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:10,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:12:10,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 373 [2023-08-03 16:12:10,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:12:16,038 INFO L124 PetriNetUnfolderBase]: 63602/91760 cut-off events. [2023-08-03 16:12:16,039 INFO L125 PetriNetUnfolderBase]: For 4662/4662 co-relation queries the response was YES. [2023-08-03 16:12:16,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173559 conditions, 91760 events. 63602/91760 cut-off events. For 4662/4662 co-relation queries the response was YES. Maximal size of possible extension queue 3363. Compared 668902 event pairs, 30330 based on Foata normal form. 9888/81383 useless extension candidates. Maximal degree in co-relation 39105. Up to 79004 conditions per place. [2023-08-03 16:12:16,625 INFO L140 encePairwiseOnDemand]: 366/373 looper letters, 57 selfloop transitions, 2 changer transitions 2/86 dead transitions. [2023-08-03 16:12:16,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 86 transitions, 342 flow [2023-08-03 16:12:16,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:12:16,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:12:16,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 625 transitions. [2023-08-03 16:12:16,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5585344057193923 [2023-08-03 16:12:16,628 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 625 transitions. [2023-08-03 16:12:16,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 625 transitions. [2023-08-03 16:12:16,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:12:16,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 625 transitions. [2023-08-03 16:12:16,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:16,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:16,633 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:16,633 INFO L175 Difference]: Start difference. First operand has 70 places, 82 transitions, 212 flow. Second operand 3 states and 625 transitions. [2023-08-03 16:12:16,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 86 transitions, 342 flow [2023-08-03 16:12:16,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 86 transitions, 342 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 16:12:16,639 INFO L231 Difference]: Finished difference. Result has 73 places, 77 transitions, 212 flow [2023-08-03 16:12:16,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=73, PETRI_TRANSITIONS=77} [2023-08-03 16:12:16,641 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 3 predicate places. [2023-08-03 16:12:16,641 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 77 transitions, 212 flow [2023-08-03 16:12:16,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:16,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:12:16,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:12:16,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 16:12:16,643 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:12:16,643 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:12:16,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1508003230, now seen corresponding path program 1 times [2023-08-03 16:12:16,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:12:16,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124054842] [2023-08-03 16:12:16,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:12:16,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:12:16,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:12:16,752 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 16:12:16,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:12:16,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124054842] [2023-08-03 16:12:16,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124054842] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:12:16,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620263657] [2023-08-03 16:12:16,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:12:16,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:12:16,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:12:16,761 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 16:12:16,767 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 16:12:16,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:12:16,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 16:12:16,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:12:16,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:12:16,916 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 16:12:16,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620263657] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:12:16,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 16:12:16,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 16:12:16,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427522864] [2023-08-03 16:12:16,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:12:16,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:12:16,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:12:16,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:12:16,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:12:16,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 373 [2023-08-03 16:12:16,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 77 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:16,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:12:16,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 373 [2023-08-03 16:12:16,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:12:21,095 INFO L124 PetriNetUnfolderBase]: 56012/78847 cut-off events. [2023-08-03 16:12:21,095 INFO L125 PetriNetUnfolderBase]: For 4060/4060 co-relation queries the response was YES. [2023-08-03 16:12:21,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151612 conditions, 78847 events. 56012/78847 cut-off events. For 4060/4060 co-relation queries the response was YES. Maximal size of possible extension queue 2933. Compared 539476 event pairs, 27168 based on Foata normal form. 0/63845 useless extension candidates. Maximal degree in co-relation 151558. Up to 69179 conditions per place. [2023-08-03 16:12:21,576 INFO L140 encePairwiseOnDemand]: 370/373 looper letters, 70 selfloop transitions, 2 changer transitions 0/97 dead transitions. [2023-08-03 16:12:21,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 97 transitions, 396 flow [2023-08-03 16:12:21,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:12:21,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:12:21,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 630 transitions. [2023-08-03 16:12:21,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5630026809651475 [2023-08-03 16:12:21,579 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 630 transitions. [2023-08-03 16:12:21,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 630 transitions. [2023-08-03 16:12:21,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:12:21,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 630 transitions. [2023-08-03 16:12:21,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 210.0) internal successors, (630), 3 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:21,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:21,583 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:21,583 INFO L175 Difference]: Start difference. First operand has 73 places, 77 transitions, 212 flow. Second operand 3 states and 630 transitions. [2023-08-03 16:12:21,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 97 transitions, 396 flow [2023-08-03 16:12:21,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 97 transitions, 394 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:12:21,589 INFO L231 Difference]: Finished difference. Result has 74 places, 78 transitions, 222 flow [2023-08-03 16:12:21,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=74, PETRI_TRANSITIONS=78} [2023-08-03 16:12:21,591 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 4 predicate places. [2023-08-03 16:12:21,592 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 78 transitions, 222 flow [2023-08-03 16:12:21,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:21,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:12:21,592 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 16:12:21,602 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 16:12:21,798 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 16:12:21,798 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:12:21,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:12:21,799 INFO L85 PathProgramCache]: Analyzing trace with hash -138494713, now seen corresponding path program 1 times [2023-08-03 16:12:21,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:12:21,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134463416] [2023-08-03 16:12:21,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:12:21,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:12:21,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:12:21,898 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 16:12:21,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:12:21,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134463416] [2023-08-03 16:12:21,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134463416] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:12:21,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96978881] [2023-08-03 16:12:21,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:12:21,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:12:21,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:12:21,906 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 16:12:21,921 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 16:12:21,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:12:22,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 16:12:22,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:12:22,043 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 16:12:22,044 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 16:12:22,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96978881] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:12:22,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 16:12:22,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 16:12:22,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851367907] [2023-08-03 16:12:22,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:12:22,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:12:22,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:12:22,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:12:22,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 16:12:22,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 373 [2023-08-03 16:12:22,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 78 transitions, 222 flow. Second operand has 5 states, 5 states have (on average 186.6) internal successors, (933), 5 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:22,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:12:22,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 373 [2023-08-03 16:12:22,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:12:26,465 INFO L124 PetriNetUnfolderBase]: 55952/78219 cut-off events. [2023-08-03 16:12:26,465 INFO L125 PetriNetUnfolderBase]: For 6048/6048 co-relation queries the response was YES. [2023-08-03 16:12:26,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153165 conditions, 78219 events. 55952/78219 cut-off events. For 6048/6048 co-relation queries the response was YES. Maximal size of possible extension queue 2884. Compared 527448 event pairs, 18202 based on Foata normal form. 25/63756 useless extension candidates. Maximal degree in co-relation 33632. Up to 69729 conditions per place. [2023-08-03 16:12:26,949 INFO L140 encePairwiseOnDemand]: 369/373 looper letters, 69 selfloop transitions, 4 changer transitions 0/97 dead transitions. [2023-08-03 16:12:26,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 97 transitions, 407 flow [2023-08-03 16:12:26,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 16:12:26,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 16:12:26,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 998 transitions. [2023-08-03 16:12:26,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5351206434316353 [2023-08-03 16:12:26,955 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 998 transitions. [2023-08-03 16:12:26,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 998 transitions. [2023-08-03 16:12:26,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:12:26,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 998 transitions. [2023-08-03 16:12:26,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 199.6) internal successors, (998), 5 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:26,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 373.0) internal successors, (2238), 6 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:26,963 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 373.0) internal successors, (2238), 6 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:26,963 INFO L175 Difference]: Start difference. First operand has 74 places, 78 transitions, 222 flow. Second operand 5 states and 998 transitions. [2023-08-03 16:12:26,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 97 transitions, 407 flow [2023-08-03 16:12:26,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 97 transitions, 398 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 16:12:26,972 INFO L231 Difference]: Finished difference. Result has 76 places, 78 transitions, 231 flow [2023-08-03 16:12:26,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=231, PETRI_PLACES=76, PETRI_TRANSITIONS=78} [2023-08-03 16:12:26,974 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 6 predicate places. [2023-08-03 16:12:26,974 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 78 transitions, 231 flow [2023-08-03 16:12:26,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 186.6) internal successors, (933), 5 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:26,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:12:26,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:12:26,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 16:12:27,180 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 16:12:27,180 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:12:27,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:12:27,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1641449636, now seen corresponding path program 1 times [2023-08-03 16:12:27,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:12:27,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901504234] [2023-08-03 16:12:27,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:12:27,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:12:27,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:12:27,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:12:27,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:12:27,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901504234] [2023-08-03 16:12:27,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901504234] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:12:27,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211109551] [2023-08-03 16:12:27,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:12:27,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:12:27,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:12:27,243 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:12:27,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 16:12:27,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:12:27,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 16:12:27,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:12:27,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 16:12:27,354 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 16:12:27,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211109551] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:12:27,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 16:12:27,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 16:12:27,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457025614] [2023-08-03 16:12:27,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:12:27,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:12:27,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:12:27,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:12:27,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:12:27,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 373 [2023-08-03 16:12:27,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 78 transitions, 231 flow. Second operand has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:27,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:12:27,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 373 [2023-08-03 16:12:27,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:12:30,385 INFO L124 PetriNetUnfolderBase]: 41316/57056 cut-off events. [2023-08-03 16:12:30,385 INFO L125 PetriNetUnfolderBase]: For 3969/3969 co-relation queries the response was YES. [2023-08-03 16:12:30,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113695 conditions, 57056 events. 41316/57056 cut-off events. For 3969/3969 co-relation queries the response was YES. Maximal size of possible extension queue 1642. Compared 358710 event pairs, 19318 based on Foata normal form. 0/46976 useless extension candidates. Maximal degree in co-relation 28462. Up to 37886 conditions per place. [2023-08-03 16:12:30,877 INFO L140 encePairwiseOnDemand]: 370/373 looper letters, 83 selfloop transitions, 2 changer transitions 0/109 dead transitions. [2023-08-03 16:12:30,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 109 transitions, 473 flow [2023-08-03 16:12:30,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:12:30,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:12:30,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 641 transitions. [2023-08-03 16:12:30,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5728328865058088 [2023-08-03 16:12:30,879 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 641 transitions. [2023-08-03 16:12:30,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 641 transitions. [2023-08-03 16:12:30,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:12:30,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 641 transitions. [2023-08-03 16:12:30,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:30,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:30,883 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:30,883 INFO L175 Difference]: Start difference. First operand has 76 places, 78 transitions, 231 flow. Second operand 3 states and 641 transitions. [2023-08-03 16:12:30,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 109 transitions, 473 flow [2023-08-03 16:12:30,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 109 transitions, 466 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 16:12:30,887 INFO L231 Difference]: Finished difference. Result has 77 places, 79 transitions, 236 flow [2023-08-03 16:12:30,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=236, PETRI_PLACES=77, PETRI_TRANSITIONS=79} [2023-08-03 16:12:30,888 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 7 predicate places. [2023-08-03 16:12:30,888 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 79 transitions, 236 flow [2023-08-03 16:12:30,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:30,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:12:30,889 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:12:30,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 16:12:31,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:12:31,094 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:12:31,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:12:31,094 INFO L85 PathProgramCache]: Analyzing trace with hash -2070310180, now seen corresponding path program 1 times [2023-08-03 16:12:31,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:12:31,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716517698] [2023-08-03 16:12:31,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:12:31,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:12:31,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:12:31,157 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 16:12:31,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:12:31,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716517698] [2023-08-03 16:12:31,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716517698] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:12:31,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49975235] [2023-08-03 16:12:31,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:12:31,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:12:31,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:12:31,160 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:12:31,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 16:12:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:12:31,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 16:12:31,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:12:31,277 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 16:12:31,277 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:12:31,298 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 16:12:31,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49975235] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:12:31,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:12:31,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 16:12:31,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970639152] [2023-08-03 16:12:31,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:12:31,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:12:31,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:12:31,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:12:31,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:12:31,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 373 [2023-08-03 16:12:31,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 79 transitions, 236 flow. Second operand has 5 states, 5 states have (on average 187.6) internal successors, (938), 5 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:31,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:12:31,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 373 [2023-08-03 16:12:31,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:12:34,150 INFO L124 PetriNetUnfolderBase]: 38225/53162 cut-off events. [2023-08-03 16:12:34,150 INFO L125 PetriNetUnfolderBase]: For 8589/8589 co-relation queries the response was YES. [2023-08-03 16:12:34,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108254 conditions, 53162 events. 38225/53162 cut-off events. For 8589/8589 co-relation queries the response was YES. Maximal size of possible extension queue 1649. Compared 337005 event pairs, 13949 based on Foata normal form. 5/44940 useless extension candidates. Maximal degree in co-relation 32986. Up to 48218 conditions per place. [2023-08-03 16:12:34,453 INFO L140 encePairwiseOnDemand]: 370/373 looper letters, 70 selfloop transitions, 3 changer transitions 0/97 dead transitions. [2023-08-03 16:12:34,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 97 transitions, 414 flow [2023-08-03 16:12:34,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:12:34,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:12:34,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 812 transitions. [2023-08-03 16:12:34,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5442359249329759 [2023-08-03 16:12:34,455 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 812 transitions. [2023-08-03 16:12:34,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 812 transitions. [2023-08-03 16:12:34,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:12:34,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 812 transitions. [2023-08-03 16:12:34,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:34,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 373.0) internal successors, (1865), 5 states have internal predecessors, (1865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:34,461 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 373.0) internal successors, (1865), 5 states have internal predecessors, (1865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:34,461 INFO L175 Difference]: Start difference. First operand has 77 places, 79 transitions, 236 flow. Second operand 4 states and 812 transitions. [2023-08-03 16:12:34,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 97 transitions, 414 flow [2023-08-03 16:12:34,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 97 transitions, 412 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:12:34,721 INFO L231 Difference]: Finished difference. Result has 79 places, 78 transitions, 232 flow [2023-08-03 16:12:34,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=232, PETRI_PLACES=79, PETRI_TRANSITIONS=78} [2023-08-03 16:12:34,721 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 9 predicate places. [2023-08-03 16:12:34,721 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 78 transitions, 232 flow [2023-08-03 16:12:34,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 187.6) internal successors, (938), 5 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:34,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:12:34,722 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:12:34,728 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-03 16:12:34,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:12:34,927 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:12:34,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:12:34,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1340013933, now seen corresponding path program 1 times [2023-08-03 16:12:34,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:12:34,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309661626] [2023-08-03 16:12:34,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:12:34,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:12:34,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:12:35,032 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:12:35,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:12:35,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309661626] [2023-08-03 16:12:35,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309661626] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:12:35,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581719363] [2023-08-03 16:12:35,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:12:35,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:12:35,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:12:35,036 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:12:35,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-03 16:12:35,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:12:35,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 16:12:35,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:12:35,162 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:12:35,163 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 16:12:35,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581719363] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:12:35,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 16:12:35,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 16:12:35,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128934622] [2023-08-03 16:12:35,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:12:35,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:12:35,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:12:35,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:12:35,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 16:12:35,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 373 [2023-08-03 16:12:35,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 78 transitions, 232 flow. Second operand has 5 states, 5 states have (on average 187.6) internal successors, (938), 5 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:35,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:12:35,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 373 [2023-08-03 16:12:35,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:12:37,756 INFO L124 PetriNetUnfolderBase]: 34650/45995 cut-off events. [2023-08-03 16:12:37,756 INFO L125 PetriNetUnfolderBase]: For 3215/3215 co-relation queries the response was YES. [2023-08-03 16:12:37,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95893 conditions, 45995 events. 34650/45995 cut-off events. For 3215/3215 co-relation queries the response was YES. Maximal size of possible extension queue 1392. Compared 256680 event pairs, 262 based on Foata normal form. 750/40014 useless extension candidates. Maximal degree in co-relation 29228. Up to 38312 conditions per place. [2023-08-03 16:12:37,972 INFO L140 encePairwiseOnDemand]: 369/373 looper letters, 107 selfloop transitions, 4 changer transitions 0/134 dead transitions. [2023-08-03 16:12:37,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 134 transitions, 566 flow [2023-08-03 16:12:37,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 16:12:37,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 16:12:37,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1035 transitions. [2023-08-03 16:12:37,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5549597855227882 [2023-08-03 16:12:37,975 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1035 transitions. [2023-08-03 16:12:37,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1035 transitions. [2023-08-03 16:12:37,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:12:37,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1035 transitions. [2023-08-03 16:12:37,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 207.0) internal successors, (1035), 5 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:37,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 373.0) internal successors, (2238), 6 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:37,981 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 373.0) internal successors, (2238), 6 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:37,981 INFO L175 Difference]: Start difference. First operand has 79 places, 78 transitions, 232 flow. Second operand 5 states and 1035 transitions. [2023-08-03 16:12:37,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 134 transitions, 566 flow [2023-08-03 16:12:38,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 134 transitions, 554 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 16:12:38,091 INFO L231 Difference]: Finished difference. Result has 79 places, 78 transitions, 237 flow [2023-08-03 16:12:38,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=237, PETRI_PLACES=79, PETRI_TRANSITIONS=78} [2023-08-03 16:12:38,092 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 9 predicate places. [2023-08-03 16:12:38,092 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 78 transitions, 237 flow [2023-08-03 16:12:38,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 187.6) internal successors, (938), 5 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:38,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:12:38,093 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:12:38,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-03 16:12:38,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:12:38,297 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:12:38,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:12:38,297 INFO L85 PathProgramCache]: Analyzing trace with hash 757011153, now seen corresponding path program 1 times [2023-08-03 16:12:38,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:12:38,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018898510] [2023-08-03 16:12:38,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:12:38,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:12:38,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:12:38,370 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-03 16:12:38,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:12:38,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018898510] [2023-08-03 16:12:38,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018898510] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:12:38,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:12:38,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 16:12:38,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26380852] [2023-08-03 16:12:38,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:12:38,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:12:38,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:12:38,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:12:38,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:12:38,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 373 [2023-08-03 16:12:38,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 78 transitions, 237 flow. Second operand has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:38,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:12:38,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 373 [2023-08-03 16:12:38,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:12:42,254 INFO L124 PetriNetUnfolderBase]: 52471/72448 cut-off events. [2023-08-03 16:12:42,254 INFO L125 PetriNetUnfolderBase]: For 17474/17474 co-relation queries the response was YES. [2023-08-03 16:12:42,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151316 conditions, 72448 events. 52471/72448 cut-off events. For 17474/17474 co-relation queries the response was YES. Maximal size of possible extension queue 2039. Compared 464045 event pairs, 22091 based on Foata normal form. 0/61610 useless extension candidates. Maximal degree in co-relation 149207. Up to 43989 conditions per place. [2023-08-03 16:12:42,671 INFO L140 encePairwiseOnDemand]: 370/373 looper letters, 102 selfloop transitions, 2 changer transitions 0/127 dead transitions. [2023-08-03 16:12:42,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 127 transitions, 613 flow [2023-08-03 16:12:42,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:12:42,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:12:42,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 655 transitions. [2023-08-03 16:12:42,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5853440571939231 [2023-08-03 16:12:42,673 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 655 transitions. [2023-08-03 16:12:42,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 655 transitions. [2023-08-03 16:12:42,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:12:42,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 655 transitions. [2023-08-03 16:12:42,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:42,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:42,677 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:42,677 INFO L175 Difference]: Start difference. First operand has 79 places, 78 transitions, 237 flow. Second operand 3 states and 655 transitions. [2023-08-03 16:12:42,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 127 transitions, 613 flow [2023-08-03 16:12:42,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 127 transitions, 599 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-03 16:12:42,843 INFO L231 Difference]: Finished difference. Result has 80 places, 79 transitions, 242 flow [2023-08-03 16:12:42,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=80, PETRI_TRANSITIONS=79} [2023-08-03 16:12:42,844 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 10 predicate places. [2023-08-03 16:12:42,844 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 79 transitions, 242 flow [2023-08-03 16:12:42,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:42,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:12:42,845 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:12:42,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-03 16:12:42,845 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:12:42,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:12:42,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1160255329, now seen corresponding path program 1 times [2023-08-03 16:12:42,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:12:42,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045142621] [2023-08-03 16:12:42,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:12:42,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:12:43,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:12:43,087 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:12:43,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:12:43,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045142621] [2023-08-03 16:12:43,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045142621] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:12:43,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:12:43,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 16:12:43,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236639161] [2023-08-03 16:12:43,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:12:43,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:12:43,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:12:43,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:12:43,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:12:43,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 373 [2023-08-03 16:12:43,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 79 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:43,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:12:43,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 373 [2023-08-03 16:12:43,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:12:49,473 INFO L124 PetriNetUnfolderBase]: 79331/112945 cut-off events. [2023-08-03 16:12:49,473 INFO L125 PetriNetUnfolderBase]: For 38179/38179 co-relation queries the response was YES. [2023-08-03 16:12:50,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240831 conditions, 112945 events. 79331/112945 cut-off events. For 38179/38179 co-relation queries the response was YES. Maximal size of possible extension queue 2852. Compared 815778 event pairs, 35304 based on Foata normal form. 0/98818 useless extension candidates. Maximal degree in co-relation 160908. Up to 66277 conditions per place. [2023-08-03 16:12:50,394 INFO L140 encePairwiseOnDemand]: 370/373 looper letters, 101 selfloop transitions, 2 changer transitions 0/126 dead transitions. [2023-08-03 16:12:50,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 126 transitions, 610 flow [2023-08-03 16:12:50,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:12:50,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:12:50,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 653 transitions. [2023-08-03 16:12:50,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5835567470956211 [2023-08-03 16:12:50,396 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 653 transitions. [2023-08-03 16:12:50,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 653 transitions. [2023-08-03 16:12:50,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:12:50,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 653 transitions. [2023-08-03 16:12:50,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:50,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:50,399 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:50,399 INFO L175 Difference]: Start difference. First operand has 80 places, 79 transitions, 242 flow. Second operand 3 states and 653 transitions. [2023-08-03 16:12:50,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 126 transitions, 610 flow [2023-08-03 16:12:50,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 126 transitions, 606 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:12:50,490 INFO L231 Difference]: Finished difference. Result has 82 places, 80 transitions, 252 flow [2023-08-03 16:12:50,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=82, PETRI_TRANSITIONS=80} [2023-08-03 16:12:50,491 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 12 predicate places. [2023-08-03 16:12:50,491 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 80 transitions, 252 flow [2023-08-03 16:12:50,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:50,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:12:50,492 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:12:50,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-03 16:12:50,492 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:12:50,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:12:50,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1924750079, now seen corresponding path program 1 times [2023-08-03 16:12:50,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:12:50,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949550128] [2023-08-03 16:12:50,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:12:50,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:12:50,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:12:50,539 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 16:12:50,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:12:50,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949550128] [2023-08-03 16:12:50,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949550128] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:12:50,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:12:50,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 16:12:50,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656472372] [2023-08-03 16:12:50,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:12:50,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:12:50,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:12:50,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:12:50,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:12:50,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 373 [2023-08-03 16:12:50,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 80 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:12:50,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:12:50,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 373 [2023-08-03 16:12:50,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:13:00,685 INFO L124 PetriNetUnfolderBase]: 107089/167788 cut-off events. [2023-08-03 16:13:00,685 INFO L125 PetriNetUnfolderBase]: For 62806/62806 co-relation queries the response was YES. [2023-08-03 16:13:01,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350448 conditions, 167788 events. 107089/167788 cut-off events. For 62806/62806 co-relation queries the response was YES. Maximal size of possible extension queue 4728. Compared 1501248 event pairs, 54105 based on Foata normal form. 0/151281 useless extension candidates. Maximal degree in co-relation 233426. Up to 99710 conditions per place. [2023-08-03 16:13:01,716 INFO L140 encePairwiseOnDemand]: 370/373 looper letters, 99 selfloop transitions, 2 changer transitions 0/124 dead transitions. [2023-08-03 16:13:01,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 124 transitions, 601 flow [2023-08-03 16:13:01,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:13:01,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:13:01,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 649 transitions. [2023-08-03 16:13:01,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.579982126899017 [2023-08-03 16:13:01,718 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 649 transitions. [2023-08-03 16:13:01,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 649 transitions. [2023-08-03 16:13:01,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:13:01,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 649 transitions. [2023-08-03 16:13:01,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:13:01,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:13:01,722 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:13:01,722 INFO L175 Difference]: Start difference. First operand has 82 places, 80 transitions, 252 flow. Second operand 3 states and 649 transitions. [2023-08-03 16:13:01,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 124 transitions, 601 flow [2023-08-03 16:13:01,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 124 transitions, 597 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:13:01,857 INFO L231 Difference]: Finished difference. Result has 84 places, 81 transitions, 262 flow [2023-08-03 16:13:01,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=84, PETRI_TRANSITIONS=81} [2023-08-03 16:13:01,857 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 14 predicate places. [2023-08-03 16:13:01,857 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 81 transitions, 262 flow [2023-08-03 16:13:01,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:13:01,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:13:01,858 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:13:01,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-03 16:13:01,858 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:13:01,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:13:01,858 INFO L85 PathProgramCache]: Analyzing trace with hash -509124953, now seen corresponding path program 1 times [2023-08-03 16:13:01,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:13:01,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244038262] [2023-08-03 16:13:01,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:13:01,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:13:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:13:01,930 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-03 16:13:01,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:13:01,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244038262] [2023-08-03 16:13:01,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244038262] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:13:01,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234886624] [2023-08-03 16:13:01,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:13:01,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:13:01,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:13:01,933 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:13:01,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-03 16:13:02,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:13:02,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 16:13:02,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:13:02,042 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-03 16:13:02,043 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 16:13:02,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234886624] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:13:02,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 16:13:02,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 16:13:02,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871697954] [2023-08-03 16:13:02,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:13:02,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:13:02,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:13:02,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:13:02,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:13:02,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 373 [2023-08-03 16:13:02,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 81 transitions, 262 flow. Second operand has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:13:02,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:13:02,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 373 [2023-08-03 16:13:02,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:13:10,270 INFO L124 PetriNetUnfolderBase]: 97318/130137 cut-off events. [2023-08-03 16:13:10,270 INFO L125 PetriNetUnfolderBase]: For 70129/70129 co-relation queries the response was YES. [2023-08-03 16:13:10,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310452 conditions, 130137 events. 97318/130137 cut-off events. For 70129/70129 co-relation queries the response was YES. Maximal size of possible extension queue 3143. Compared 829551 event pairs, 56910 based on Foata normal form. 0/122029 useless extension candidates. Maximal degree in co-relation 206409. Up to 103715 conditions per place. [2023-08-03 16:13:11,424 INFO L140 encePairwiseOnDemand]: 370/373 looper letters, 90 selfloop transitions, 2 changer transitions 0/115 dead transitions. [2023-08-03 16:13:11,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 115 transitions, 548 flow [2023-08-03 16:13:11,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:13:11,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:13:11,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 641 transitions. [2023-08-03 16:13:11,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5728328865058088 [2023-08-03 16:13:11,426 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 641 transitions. [2023-08-03 16:13:11,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 641 transitions. [2023-08-03 16:13:11,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:13:11,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 641 transitions. [2023-08-03 16:13:11,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:13:11,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:13:11,430 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:13:11,430 INFO L175 Difference]: Start difference. First operand has 84 places, 81 transitions, 262 flow. Second operand 3 states and 641 transitions. [2023-08-03 16:13:11,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 115 transitions, 548 flow [2023-08-03 16:13:11,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 115 transitions, 544 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:13:11,720 INFO L231 Difference]: Finished difference. Result has 86 places, 82 transitions, 272 flow [2023-08-03 16:13:11,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=86, PETRI_TRANSITIONS=82} [2023-08-03 16:13:11,721 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 16 predicate places. [2023-08-03 16:13:11,721 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 82 transitions, 272 flow [2023-08-03 16:13:11,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:13:11,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:13:11,722 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:13:11,726 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-03 16:13:11,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:13:11,922 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:13:11,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:13:11,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1944945494, now seen corresponding path program 1 times [2023-08-03 16:13:11,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:13:11,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039409076] [2023-08-03 16:13:11,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:13:11,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:13:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:13:11,985 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-03 16:13:11,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:13:11,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039409076] [2023-08-03 16:13:11,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039409076] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:13:11,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996742131] [2023-08-03 16:13:11,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:13:11,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:13:11,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:13:11,988 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:13:12,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-03 16:13:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:13:12,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 16:13:12,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:13:12,168 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-03 16:13:12,168 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 16:13:12,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996742131] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:13:12,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 16:13:12,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-03 16:13:12,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926052069] [2023-08-03 16:13:12,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:13:12,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:13:12,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:13:12,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:13:12,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:13:12,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 373 [2023-08-03 16:13:12,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 82 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:13:12,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:13:12,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 373 [2023-08-03 16:13:12,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:13:20,523 INFO L124 PetriNetUnfolderBase]: 98188/131077 cut-off events. [2023-08-03 16:13:20,523 INFO L125 PetriNetUnfolderBase]: For 68654/68654 co-relation queries the response was YES. [2023-08-03 16:13:20,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313286 conditions, 131077 events. 98188/131077 cut-off events. For 68654/68654 co-relation queries the response was YES. Maximal size of possible extension queue 3148. Compared 834239 event pairs, 37301 based on Foata normal form. 36/123551 useless extension candidates. Maximal degree in co-relation 255041. Up to 68881 conditions per place. [2023-08-03 16:13:21,410 INFO L140 encePairwiseOnDemand]: 369/373 looper letters, 100 selfloop transitions, 3 changer transitions 0/126 dead transitions. [2023-08-03 16:13:21,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 126 transitions, 635 flow [2023-08-03 16:13:21,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:13:21,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:13:21,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 645 transitions. [2023-08-03 16:13:21,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5764075067024129 [2023-08-03 16:13:21,412 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 645 transitions. [2023-08-03 16:13:21,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 645 transitions. [2023-08-03 16:13:21,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:13:21,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 645 transitions. [2023-08-03 16:13:21,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:13:21,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:13:21,416 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:13:21,416 INFO L175 Difference]: Start difference. First operand has 86 places, 82 transitions, 272 flow. Second operand 3 states and 645 transitions. [2023-08-03 16:13:21,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 126 transitions, 635 flow [2023-08-03 16:13:23,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 126 transitions, 631 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:13:23,769 INFO L231 Difference]: Finished difference. Result has 88 places, 84 transitions, 289 flow [2023-08-03 16:13:23,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=289, PETRI_PLACES=88, PETRI_TRANSITIONS=84} [2023-08-03 16:13:23,769 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 18 predicate places. [2023-08-03 16:13:23,769 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 84 transitions, 289 flow [2023-08-03 16:13:23,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:13:23,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:13:23,770 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:13:23,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-03 16:13:23,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:13:23,972 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:13:23,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:13:23,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1248015025, now seen corresponding path program 1 times [2023-08-03 16:13:23,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:13:23,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102092678] [2023-08-03 16:13:23,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:13:23,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:13:23,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:13:24,045 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-03 16:13:24,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:13:24,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102092678] [2023-08-03 16:13:24,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102092678] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:13:24,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579372404] [2023-08-03 16:13:24,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:13:24,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:13:24,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:13:24,047 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:13:24,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-03 16:13:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:13:24,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 16:13:24,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:13:24,189 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 16:13:24,190 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 16:13:24,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579372404] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:13:24,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 16:13:24,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 16:13:24,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789766242] [2023-08-03 16:13:24,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:13:24,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:13:24,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:13:24,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:13:24,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:13:24,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 373 [2023-08-03 16:13:24,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 84 transitions, 289 flow. Second operand has 3 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:13:24,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:13:24,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 373 [2023-08-03 16:13:24,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:13:37,742 INFO L124 PetriNetUnfolderBase]: 136435/199834 cut-off events. [2023-08-03 16:13:37,742 INFO L125 PetriNetUnfolderBase]: For 99729/99729 co-relation queries the response was YES. [2023-08-03 16:13:38,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461892 conditions, 199834 events. 136435/199834 cut-off events. For 99729/99729 co-relation queries the response was YES. Maximal size of possible extension queue 4688. Compared 1602376 event pairs, 66229 based on Foata normal form. 0/189235 useless extension candidates. Maximal degree in co-relation 382888. Up to 123001 conditions per place. [2023-08-03 16:13:39,702 INFO L140 encePairwiseOnDemand]: 370/373 looper letters, 101 selfloop transitions, 2 changer transitions 0/126 dead transitions. [2023-08-03 16:13:39,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 126 transitions, 646 flow [2023-08-03 16:13:39,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:13:39,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:13:39,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 647 transitions. [2023-08-03 16:13:39,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5781948168007149 [2023-08-03 16:13:39,704 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 647 transitions. [2023-08-03 16:13:39,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 647 transitions. [2023-08-03 16:13:39,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:13:39,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 647 transitions. [2023-08-03 16:13:39,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:13:39,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:13:39,708 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:13:39,708 INFO L175 Difference]: Start difference. First operand has 88 places, 84 transitions, 289 flow. Second operand 3 states and 647 transitions. [2023-08-03 16:13:39,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 126 transitions, 646 flow [2023-08-03 16:13:41,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 126 transitions, 642 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:13:41,404 INFO L231 Difference]: Finished difference. Result has 90 places, 85 transitions, 298 flow [2023-08-03 16:13:41,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=90, PETRI_TRANSITIONS=85} [2023-08-03 16:13:41,405 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 20 predicate places. [2023-08-03 16:13:41,405 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 85 transitions, 298 flow [2023-08-03 16:13:41,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:13:41,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:13:41,406 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:13:41,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-03 16:13:41,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-03 16:13:41,611 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:13:41,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:13:41,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1545014922, now seen corresponding path program 1 times [2023-08-03 16:13:41,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:13:41,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552660610] [2023-08-03 16:13:41,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:13:41,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:13:41,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:13:41,855 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-03 16:13:41,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:13:41,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552660610] [2023-08-03 16:13:41,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552660610] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:13:41,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476686515] [2023-08-03 16:13:41,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:13:41,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:13:41,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:13:41,857 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:13:41,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-03 16:13:42,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:13:42,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 16:13:42,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:13:42,083 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-03 16:13:42,083 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:13:42,123 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-03 16:13:42,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476686515] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:13:42,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:13:42,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2023-08-03 16:13:42,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142732969] [2023-08-03 16:13:42,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:13:42,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 16:13:42,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:13:42,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 16:13:42,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-03 16:13:42,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 373 [2023-08-03 16:13:42,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 85 transitions, 298 flow. Second operand has 6 states, 6 states have (on average 192.33333333333334) internal successors, (1154), 6 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:13:42,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:13:42,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 373 [2023-08-03 16:13:42,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:14:02,621 INFO L124 PetriNetUnfolderBase]: 196839/286018 cut-off events. [2023-08-03 16:14:02,622 INFO L125 PetriNetUnfolderBase]: For 159771/159771 co-relation queries the response was YES. [2023-08-03 16:14:03,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 673350 conditions, 286018 events. 196839/286018 cut-off events. For 159771/159771 co-relation queries the response was YES. Maximal size of possible extension queue 5745. Compared 2339471 event pairs, 60796 based on Foata normal form. 7152/279936 useless extension candidates. Maximal degree in co-relation 565255. Up to 70308 conditions per place. [2023-08-03 16:14:04,984 INFO L140 encePairwiseOnDemand]: 369/373 looper letters, 218 selfloop transitions, 5 changer transitions 0/246 dead transitions. [2023-08-03 16:14:04,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 246 transitions, 1389 flow [2023-08-03 16:14:04,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 16:14:04,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 16:14:04,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1110 transitions. [2023-08-03 16:14:04,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5951742627345844 [2023-08-03 16:14:04,987 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1110 transitions. [2023-08-03 16:14:04,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1110 transitions. [2023-08-03 16:14:04,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:14:04,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1110 transitions. [2023-08-03 16:14:04,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:14:04,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 373.0) internal successors, (2238), 6 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:14:04,993 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 373.0) internal successors, (2238), 6 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:14:04,993 INFO L175 Difference]: Start difference. First operand has 90 places, 85 transitions, 298 flow. Second operand 5 states and 1110 transitions. [2023-08-03 16:14:04,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 246 transitions, 1389 flow [2023-08-03 16:14:07,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 246 transitions, 1381 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:14:07,142 INFO L231 Difference]: Finished difference. Result has 96 places, 87 transitions, 326 flow [2023-08-03 16:14:07,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=326, PETRI_PLACES=96, PETRI_TRANSITIONS=87} [2023-08-03 16:14:07,142 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 26 predicate places. [2023-08-03 16:14:07,142 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 87 transitions, 326 flow [2023-08-03 16:14:07,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.33333333333334) internal successors, (1154), 6 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:14:07,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:14:07,143 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:14:07,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-03 16:14:07,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-03 16:14:07,344 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:14:07,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:14:07,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1333229874, now seen corresponding path program 1 times [2023-08-03 16:14:07,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:14:07,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232644328] [2023-08-03 16:14:07,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:14:07,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:14:07,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:14:07,426 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:14:07,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:14:07,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232644328] [2023-08-03 16:14:07,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232644328] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:14:07,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48407597] [2023-08-03 16:14:07,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:14:07,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:14:07,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:14:07,430 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:14:07,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-03 16:14:07,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:14:07,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 16:14:07,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:14:07,587 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 16:14:07,587 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:14:07,608 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 16:14:07,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48407597] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:14:07,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:14:07,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2023-08-03 16:14:07,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362461168] [2023-08-03 16:14:07,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:14:07,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 16:14:07,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:14:07,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 16:14:07,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-03 16:14:07,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 373 [2023-08-03 16:14:07,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 87 transitions, 326 flow. Second operand has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:14:07,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:14:07,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 373 [2023-08-03 16:14:07,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:14:36,064 INFO L124 PetriNetUnfolderBase]: 253926/363819 cut-off events. [2023-08-03 16:14:36,064 INFO L125 PetriNetUnfolderBase]: For 315741/315741 co-relation queries the response was YES. [2023-08-03 16:14:37,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 916466 conditions, 363819 events. 253926/363819 cut-off events. For 315741/315741 co-relation queries the response was YES. Maximal size of possible extension queue 6992. Compared 2961750 event pairs, 48315 based on Foata normal form. 5814/355671 useless extension candidates. Maximal degree in co-relation 776803. Up to 131206 conditions per place. [2023-08-03 16:14:39,448 INFO L140 encePairwiseOnDemand]: 367/373 looper letters, 307 selfloop transitions, 18 changer transitions 0/348 dead transitions. [2023-08-03 16:14:39,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 348 transitions, 2066 flow [2023-08-03 16:14:39,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-03 16:14:39,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-03 16:14:39,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2080 transitions. [2023-08-03 16:14:39,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5576407506702413 [2023-08-03 16:14:39,452 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2080 transitions. [2023-08-03 16:14:39,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2080 transitions. [2023-08-03 16:14:39,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:14:39,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2080 transitions. [2023-08-03 16:14:39,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 208.0) internal successors, (2080), 10 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:14:39,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 373.0) internal successors, (4103), 11 states have internal predecessors, (4103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:14:39,462 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 373.0) internal successors, (4103), 11 states have internal predecessors, (4103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:14:39,462 INFO L175 Difference]: Start difference. First operand has 96 places, 87 transitions, 326 flow. Second operand 10 states and 2080 transitions. [2023-08-03 16:14:39,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 348 transitions, 2066 flow [2023-08-03 16:14:45,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 348 transitions, 2012 flow, removed 18 selfloop flow, removed 1 redundant places. [2023-08-03 16:14:45,935 INFO L231 Difference]: Finished difference. Result has 107 places, 99 transitions, 440 flow [2023-08-03 16:14:45,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=440, PETRI_PLACES=107, PETRI_TRANSITIONS=99} [2023-08-03 16:14:45,935 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 37 predicate places. [2023-08-03 16:14:45,935 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 99 transitions, 440 flow [2023-08-03 16:14:45,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:14:45,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:14:45,936 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:14:45,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-03 16:14:46,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-03 16:14:46,141 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:14:46,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:14:46,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1333947953, now seen corresponding path program 1 times [2023-08-03 16:14:46,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:14:46,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386975895] [2023-08-03 16:14:46,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:14:46,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:14:46,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:14:46,204 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 16:14:46,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:14:46,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386975895] [2023-08-03 16:14:46,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386975895] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:14:46,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:14:46,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:14:46,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218280353] [2023-08-03 16:14:46,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:14:46,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:14:46,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:14:46,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:14:46,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:14:46,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 373 [2023-08-03 16:14:46,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 99 transitions, 440 flow. Second operand has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:14:46,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:14:46,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 373 [2023-08-03 16:14:46,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand