/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/weaver_chl-time-subst.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 19:49:38,250 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 19:49:38,314 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 19:49:38,322 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 19:49:38,323 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 19:49:38,323 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 19:49:38,324 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 19:49:38,356 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 19:49:38,357 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 19:49:38,362 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 19:49:38,363 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 19:49:38,363 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 19:49:38,364 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 19:49:38,365 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 19:49:38,365 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 19:49:38,366 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 19:49:38,366 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 19:49:38,366 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 19:49:38,366 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 19:49:38,367 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 19:49:38,367 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 19:49:38,367 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 19:49:38,367 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 19:49:38,368 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 19:49:38,368 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 19:49:38,369 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 19:49:38,370 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 19:49:38,370 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 19:49:38,370 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 19:49:38,370 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 19:49:38,371 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:49:38,372 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 19:49:38,372 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 19:49:38,372 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 19:49:38,372 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 19:49:38,372 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 19:49:38,372 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 19:49:38,372 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 19:49:38,373 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 19:49:38,373 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 19:49:38,373 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 19:49:38,373 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 19:49:38,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 19:49:38,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 19:49:38,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 19:49:38,633 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 19:49:38,633 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 19:49:38,634 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-time-subst.wvr_bound2.c [2023-08-03 19:49:39,811 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 19:49:39,984 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 19:49:39,985 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-time-subst.wvr_bound2.c [2023-08-03 19:49:39,990 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cb352504/88039729208f4615afca57a7fa335324/FLAG2ecf39b87 [2023-08-03 19:49:40,001 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cb352504/88039729208f4615afca57a7fa335324 [2023-08-03 19:49:40,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 19:49:40,005 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 19:49:40,006 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 19:49:40,006 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 19:49:40,010 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 19:49:40,010 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:49:40" (1/1) ... [2023-08-03 19:49:40,011 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@100aa45f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:49:40, skipping insertion in model container [2023-08-03 19:49:40,011 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:49:40" (1/1) ... [2023-08-03 19:49:40,030 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 19:49:40,172 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-time-subst.wvr_bound2.c[3122,3135] [2023-08-03 19:49:40,176 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:49:40,186 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 19:49:40,207 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-time-subst.wvr_bound2.c[3122,3135] [2023-08-03 19:49:40,210 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:49:40,217 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 19:49:40,217 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 19:49:40,222 INFO L206 MainTranslator]: Completed translation [2023-08-03 19:49:40,223 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:49:40 WrapperNode [2023-08-03 19:49:40,223 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 19:49:40,224 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 19:49:40,224 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 19:49:40,224 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 19:49:40,229 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:49:40" (1/1) ... [2023-08-03 19:49:40,236 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:49:40" (1/1) ... [2023-08-03 19:49:40,262 INFO L138 Inliner]: procedures = 23, calls = 39, calls flagged for inlining = 11, calls inlined = 21, statements flattened = 271 [2023-08-03 19:49:40,262 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 19:49:40,263 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 19:49:40,263 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 19:49:40,263 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 19:49:40,269 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:49:40" (1/1) ... [2023-08-03 19:49:40,269 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:49:40" (1/1) ... [2023-08-03 19:49:40,273 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:49:40" (1/1) ... [2023-08-03 19:49:40,273 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:49:40" (1/1) ... [2023-08-03 19:49:40,280 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:49:40" (1/1) ... [2023-08-03 19:49:40,289 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:49:40" (1/1) ... [2023-08-03 19:49:40,290 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:49:40" (1/1) ... [2023-08-03 19:49:40,292 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:49:40" (1/1) ... [2023-08-03 19:49:40,295 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 19:49:40,295 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 19:49:40,295 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 19:49:40,295 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 19:49:40,296 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:49:40" (1/1) ... [2023-08-03 19:49:40,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:49:40,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:49:40,332 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 19:49:40,349 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 19:49:40,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 19:49:40,382 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 19:49:40,383 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 19:49:40,383 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 19:49:40,383 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 19:49:40,383 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-03 19:49:40,383 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-03 19:49:40,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 19:49:40,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 19:49:40,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 19:49:40,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 19:49:40,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 19:49:40,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 19:49:40,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 19:49:40,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 19:49:40,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 19:49:40,387 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 19:49:40,506 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 19:49:40,507 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 19:49:40,956 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 19:49:41,238 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 19:49:41,238 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-03 19:49:41,240 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:49:41 BoogieIcfgContainer [2023-08-03 19:49:41,241 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 19:49:41,244 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 19:49:41,244 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 19:49:41,246 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 19:49:41,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 07:49:40" (1/3) ... [2023-08-03 19:49:41,248 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f3d2588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:49:41, skipping insertion in model container [2023-08-03 19:49:41,248 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:49:40" (2/3) ... [2023-08-03 19:49:41,249 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f3d2588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:49:41, skipping insertion in model container [2023-08-03 19:49:41,249 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:49:41" (3/3) ... [2023-08-03 19:49:41,251 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_chl-time-subst.wvr_bound2.c [2023-08-03 19:49:41,258 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 19:49:41,266 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 19:49:41,266 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 19:49:41,266 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 19:49:41,329 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-03 19:49:41,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 162 transitions, 366 flow [2023-08-03 19:49:41,543 INFO L124 PetriNetUnfolderBase]: 82/602 cut-off events. [2023-08-03 19:49:41,544 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 19:49:41,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 602 events. 82/602 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2861 event pairs, 0 based on Foata normal form. 0/510 useless extension candidates. Maximal degree in co-relation 341. Up to 16 conditions per place. [2023-08-03 19:49:41,550 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 162 transitions, 366 flow [2023-08-03 19:49:41,561 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 152 transitions, 346 flow [2023-08-03 19:49:41,564 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:49:41,581 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 143 places, 152 transitions, 346 flow [2023-08-03 19:49:41,584 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 143 places, 152 transitions, 346 flow [2023-08-03 19:49:41,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 152 transitions, 346 flow [2023-08-03 19:49:41,654 INFO L124 PetriNetUnfolderBase]: 82/522 cut-off events. [2023-08-03 19:49:41,655 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 19:49:41,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 583 conditions, 522 events. 82/522 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2230 event pairs, 0 based on Foata normal form. 0/438 useless extension candidates. Maximal degree in co-relation 301. Up to 16 conditions per place. [2023-08-03 19:49:41,661 INFO L119 LiptonReduction]: Number of co-enabled transitions 1260 [2023-08-03 19:49:46,702 INFO L134 LiptonReduction]: Checked pairs total: 3951 [2023-08-03 19:49:46,703 INFO L136 LiptonReduction]: Total number of compositions: 123 [2023-08-03 19:49:46,715 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:49:46,721 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7587aa11, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:49:46,721 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 19:49:46,726 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:49:46,726 INFO L124 PetriNetUnfolderBase]: 0/26 cut-off events. [2023-08-03 19:49:46,726 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:49:46,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:49:46,727 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 19:49:46,728 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:49:46,732 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:49:46,732 INFO L85 PathProgramCache]: Analyzing trace with hash 707970769, now seen corresponding path program 1 times [2023-08-03 19:49:46,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:49:46,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751511701] [2023-08-03 19:49:46,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:49:46,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:49:46,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:49:46,844 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 19:49:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:49:46,894 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 19:49:46,896 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 19:49:46,897 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 19:49:46,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 19:49:46,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 19:49:46,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 19:49:46,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 19:49:46,900 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 19:49:46,905 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 19:49:46,905 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 19:49:46,960 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-03 19:49:46,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 183 transitions, 456 flow [2023-08-03 19:49:47,405 INFO L124 PetriNetUnfolderBase]: 834/3958 cut-off events. [2023-08-03 19:49:47,405 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 19:49:47,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4632 conditions, 3958 events. 834/3958 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 31343 event pairs, 22 based on Foata normal form. 0/3368 useless extension candidates. Maximal degree in co-relation 2326. Up to 192 conditions per place. [2023-08-03 19:49:47,422 INFO L82 GeneralOperation]: Start removeDead. Operand has 171 places, 183 transitions, 456 flow [2023-08-03 19:49:47,436 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 173 transitions, 436 flow [2023-08-03 19:49:47,436 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:49:47,436 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 173 transitions, 436 flow [2023-08-03 19:49:47,437 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 173 transitions, 436 flow [2023-08-03 19:49:47,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 173 transitions, 436 flow [2023-08-03 19:49:47,747 INFO L124 PetriNetUnfolderBase]: 834/3318 cut-off events. [2023-08-03 19:49:47,748 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 19:49:47,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3992 conditions, 3318 events. 834/3318 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 23876 event pairs, 22 based on Foata normal form. 0/2792 useless extension candidates. Maximal degree in co-relation 2006. Up to 192 conditions per place. [2023-08-03 19:49:47,786 INFO L119 LiptonReduction]: Number of co-enabled transitions 3060 [2023-08-03 19:49:54,082 INFO L134 LiptonReduction]: Checked pairs total: 13125 [2023-08-03 19:49:54,082 INFO L136 LiptonReduction]: Total number of compositions: 126 [2023-08-03 19:49:54,084 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:49:54,085 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;@7587aa11, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:49:54,085 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 19:49:54,088 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:49:54,089 INFO L124 PetriNetUnfolderBase]: 0/25 cut-off events. [2023-08-03 19:49:54,089 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 19:49:54,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:49:54,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:49:54,089 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:49:54,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:49:54,090 INFO L85 PathProgramCache]: Analyzing trace with hash 380663900, now seen corresponding path program 1 times [2023-08-03 19:49:54,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:49:54,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135421755] [2023-08-03 19:49:54,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:49:54,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:49:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:49:54,190 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 19:49:54,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:49:54,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135421755] [2023-08-03 19:49:54,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135421755] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:49:54,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:49:54,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 19:49:54,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929157688] [2023-08-03 19:49:54,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:49:54,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:49:54,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:49:54,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:49:54,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:49:54,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 309 [2023-08-03 19:49:54,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 58 transitions, 206 flow. Second operand has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:54,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:49:54,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 309 [2023-08-03 19:49:54,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:49:58,263 INFO L124 PetriNetUnfolderBase]: 19931/29965 cut-off events. [2023-08-03 19:49:58,264 INFO L125 PetriNetUnfolderBase]: For 7142/7142 co-relation queries the response was YES. [2023-08-03 19:49:58,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62896 conditions, 29965 events. 19931/29965 cut-off events. For 7142/7142 co-relation queries the response was YES. Maximal size of possible extension queue 682. Compared 188338 event pairs, 13302 based on Foata normal form. 0/27394 useless extension candidates. Maximal degree in co-relation 25306. Up to 28006 conditions per place. [2023-08-03 19:49:58,421 INFO L140 encePairwiseOnDemand]: 306/309 looper letters, 50 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-08-03 19:49:58,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 61 transitions, 316 flow [2023-08-03 19:49:58,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:49:58,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:49:58,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 476 transitions. [2023-08-03 19:49:58,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5134843581445523 [2023-08-03 19:49:58,435 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 476 transitions. [2023-08-03 19:49:58,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 476 transitions. [2023-08-03 19:49:58,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:49:58,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 476 transitions. [2023-08-03 19:49:58,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:58,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:58,447 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:58,449 INFO L175 Difference]: Start difference. First operand has 53 places, 58 transitions, 206 flow. Second operand 3 states and 476 transitions. [2023-08-03 19:49:58,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 61 transitions, 316 flow [2023-08-03 19:49:58,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 61 transitions, 316 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:49:58,462 INFO L231 Difference]: Finished difference. Result has 56 places, 59 transitions, 218 flow [2023-08-03 19:49:58,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=56, PETRI_TRANSITIONS=59} [2023-08-03 19:49:58,467 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2023-08-03 19:49:58,467 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 59 transitions, 218 flow [2023-08-03 19:49:58,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:58,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:49:58,471 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 19:49:58,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 19:49:58,476 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:49:58,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:49:58,476 INFO L85 PathProgramCache]: Analyzing trace with hash -630177945, now seen corresponding path program 1 times [2023-08-03 19:49:58,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:49:58,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253047423] [2023-08-03 19:49:58,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:49:58,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:49:58,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:49:58,707 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 19:49:58,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:49:58,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253047423] [2023-08-03 19:49:58,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253047423] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:49:58,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817003019] [2023-08-03 19:49:58,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:49:58,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:49:58,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:49:58,711 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 19:49:58,712 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 19:49:58,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:49:58,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:49:58,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:49:58,860 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 19:49:58,860 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:49:58,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817003019] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:49:58,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:49:58,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 19:49:58,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536422115] [2023-08-03 19:49:58,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:49:58,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:49:58,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:49:58,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:49:58,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:49:58,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 309 [2023-08-03 19:49:58,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 59 transitions, 218 flow. Second operand has 5 states, 5 states have (on average 141.6) internal successors, (708), 5 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:58,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:49:58,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 309 [2023-08-03 19:49:58,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:50:02,207 INFO L124 PetriNetUnfolderBase]: 19927/29957 cut-off events. [2023-08-03 19:50:02,207 INFO L125 PetriNetUnfolderBase]: For 7136/7136 co-relation queries the response was YES. [2023-08-03 19:50:02,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62893 conditions, 29957 events. 19927/29957 cut-off events. For 7136/7136 co-relation queries the response was YES. Maximal size of possible extension queue 671. Compared 188293 event pairs, 10644 based on Foata normal form. 4/27396 useless extension candidates. Maximal degree in co-relation 38021. Up to 27985 conditions per place. [2023-08-03 19:50:02,341 INFO L140 encePairwiseOnDemand]: 305/309 looper letters, 51 selfloop transitions, 4 changer transitions 0/63 dead transitions. [2023-08-03 19:50:02,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 63 transitions, 334 flow [2023-08-03 19:50:02,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:50:02,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:50:02,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 756 transitions. [2023-08-03 19:50:02,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4893203883495146 [2023-08-03 19:50:02,345 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 756 transitions. [2023-08-03 19:50:02,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 756 transitions. [2023-08-03 19:50:02,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:50:02,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 756 transitions. [2023-08-03 19:50:02,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 151.2) internal successors, (756), 5 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:02,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:02,351 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:02,352 INFO L175 Difference]: Start difference. First operand has 56 places, 59 transitions, 218 flow. Second operand 5 states and 756 transitions. [2023-08-03 19:50:02,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 63 transitions, 334 flow [2023-08-03 19:50:02,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 63 transitions, 324 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:50:02,359 INFO L231 Difference]: Finished difference. Result has 58 places, 59 transitions, 223 flow [2023-08-03 19:50:02,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=223, PETRI_PLACES=58, PETRI_TRANSITIONS=59} [2023-08-03 19:50:02,360 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 5 predicate places. [2023-08-03 19:50:02,360 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 59 transitions, 223 flow [2023-08-03 19:50:02,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 141.6) internal successors, (708), 5 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:02,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:50:02,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:50:02,372 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-03 19:50:02,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:02,566 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:50:02,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:50:02,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1427054406, now seen corresponding path program 1 times [2023-08-03 19:50:02,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:50:02,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402333975] [2023-08-03 19:50:02,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:02,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:50:02,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:02,644 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 19:50:02,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:50:02,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402333975] [2023-08-03 19:50:02,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402333975] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:50:02,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779898508] [2023-08-03 19:50:02,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:02,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:02,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:50:02,653 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 19:50:02,679 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 19:50:02,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:02,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:50:02,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:50:02,740 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 19:50:02,740 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:50:02,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779898508] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:50:02,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:50:02,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 19:50:02,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210138890] [2023-08-03 19:50:02,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:50:02,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:50:02,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:50:02,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:50:02,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:50:02,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 309 [2023-08-03 19:50:02,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 59 transitions, 223 flow. Second operand has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:02,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:50:02,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 309 [2023-08-03 19:50:02,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:50:06,273 INFO L124 PetriNetUnfolderBase]: 19713/29593 cut-off events. [2023-08-03 19:50:06,273 INFO L125 PetriNetUnfolderBase]: For 5863/5863 co-relation queries the response was YES. [2023-08-03 19:50:06,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61461 conditions, 29593 events. 19713/29593 cut-off events. For 5863/5863 co-relation queries the response was YES. Maximal size of possible extension queue 706. Compared 186378 event pairs, 13225 based on Foata normal form. 0/27100 useless extension candidates. Maximal degree in co-relation 26842. Up to 27624 conditions per place. [2023-08-03 19:50:06,434 INFO L140 encePairwiseOnDemand]: 306/309 looper letters, 53 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2023-08-03 19:50:06,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 64 transitions, 345 flow [2023-08-03 19:50:06,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:50:06,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:50:06,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 478 transitions. [2023-08-03 19:50:06,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5156418554476807 [2023-08-03 19:50:06,439 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 478 transitions. [2023-08-03 19:50:06,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 478 transitions. [2023-08-03 19:50:06,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:50:06,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 478 transitions. [2023-08-03 19:50:06,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:06,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:06,444 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:06,444 INFO L175 Difference]: Start difference. First operand has 58 places, 59 transitions, 223 flow. Second operand 3 states and 478 transitions. [2023-08-03 19:50:06,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 64 transitions, 345 flow [2023-08-03 19:50:06,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 64 transitions, 338 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:50:06,452 INFO L231 Difference]: Finished difference. Result has 59 places, 60 transitions, 231 flow [2023-08-03 19:50:06,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=231, PETRI_PLACES=59, PETRI_TRANSITIONS=60} [2023-08-03 19:50:06,456 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 6 predicate places. [2023-08-03 19:50:06,459 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 60 transitions, 231 flow [2023-08-03 19:50:06,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:06,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:50:06,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:50:06,469 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 19:50:06,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-03 19:50:06,666 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:50:06,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:50:06,666 INFO L85 PathProgramCache]: Analyzing trace with hash 2128575219, now seen corresponding path program 1 times [2023-08-03 19:50:06,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:50:06,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386364355] [2023-08-03 19:50:06,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:06,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:50:06,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:06,736 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 19:50:06,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:50:06,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386364355] [2023-08-03 19:50:06,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386364355] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:50:06,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497953778] [2023-08-03 19:50:06,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:06,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:06,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:50:06,738 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 19:50:06,742 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 19:50:06,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:06,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:50:06,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:50:06,831 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 19:50:06,831 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:50:06,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497953778] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:50:06,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:50:06,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 19:50:06,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267183543] [2023-08-03 19:50:06,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:50:06,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:50:06,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:50:06,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:50:06,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:50:06,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 309 [2023-08-03 19:50:06,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 60 transitions, 231 flow. Second operand has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:06,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:50:06,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 309 [2023-08-03 19:50:06,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:50:10,259 INFO L124 PetriNetUnfolderBase]: 19677/29839 cut-off events. [2023-08-03 19:50:10,259 INFO L125 PetriNetUnfolderBase]: For 4514/4514 co-relation queries the response was YES. [2023-08-03 19:50:10,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61755 conditions, 29839 events. 19677/29839 cut-off events. For 4514/4514 co-relation queries the response was YES. Maximal size of possible extension queue 791. Compared 191872 event pairs, 13170 based on Foata normal form. 0/27430 useless extension candidates. Maximal degree in co-relation 26912. Up to 27248 conditions per place. [2023-08-03 19:50:10,439 INFO L140 encePairwiseOnDemand]: 306/309 looper letters, 57 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-08-03 19:50:10,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 67 transitions, 363 flow [2023-08-03 19:50:10,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:50:10,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:50:10,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 480 transitions. [2023-08-03 19:50:10,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.517799352750809 [2023-08-03 19:50:10,442 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 480 transitions. [2023-08-03 19:50:10,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 480 transitions. [2023-08-03 19:50:10,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:50:10,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 480 transitions. [2023-08-03 19:50:10,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:10,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:10,449 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:10,449 INFO L175 Difference]: Start difference. First operand has 59 places, 60 transitions, 231 flow. Second operand 3 states and 480 transitions. [2023-08-03 19:50:10,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 67 transitions, 363 flow [2023-08-03 19:50:10,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 67 transitions, 360 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:50:10,455 INFO L231 Difference]: Finished difference. Result has 61 places, 61 transitions, 240 flow [2023-08-03 19:50:10,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=61, PETRI_TRANSITIONS=61} [2023-08-03 19:50:10,457 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 8 predicate places. [2023-08-03 19:50:10,457 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 61 transitions, 240 flow [2023-08-03 19:50:10,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:10,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:50:10,458 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:50:10,465 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 19:50:10,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:10,663 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:50:10,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:50:10,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1986147137, now seen corresponding path program 1 times [2023-08-03 19:50:10,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:50:10,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160810287] [2023-08-03 19:50:10,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:10,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:50:10,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:10,707 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 19:50:10,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:50:10,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160810287] [2023-08-03 19:50:10,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160810287] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:50:10,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013161310] [2023-08-03 19:50:10,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:10,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:10,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:50:10,710 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 19:50:10,712 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 19:50:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:10,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:50:10,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:50:10,810 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 19:50:10,811 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:50:10,830 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 19:50:10,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013161310] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:50:10,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:50:10,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 19:50:10,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979843040] [2023-08-03 19:50:10,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:50:10,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:50:10,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:50:10,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:50:10,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:50:10,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 309 [2023-08-03 19:50:10,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 240 flow. Second operand has 5 states, 5 states have (on average 142.6) internal successors, (713), 5 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:10,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:50:10,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 309 [2023-08-03 19:50:10,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:50:14,049 INFO L124 PetriNetUnfolderBase]: 19097/28909 cut-off events. [2023-08-03 19:50:14,049 INFO L125 PetriNetUnfolderBase]: For 4369/4369 co-relation queries the response was YES. [2023-08-03 19:50:14,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60116 conditions, 28909 events. 19097/28909 cut-off events. For 4369/4369 co-relation queries the response was YES. Maximal size of possible extension queue 808. Compared 183788 event pairs, 10459 based on Foata normal form. 2/26720 useless extension candidates. Maximal degree in co-relation 23254. Up to 26756 conditions per place. [2023-08-03 19:50:14,184 INFO L140 encePairwiseOnDemand]: 306/309 looper letters, 53 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2023-08-03 19:50:14,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 64 transitions, 354 flow [2023-08-03 19:50:14,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:50:14,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:50:14,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 615 transitions. [2023-08-03 19:50:14,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4975728155339806 [2023-08-03 19:50:14,187 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 615 transitions. [2023-08-03 19:50:14,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 615 transitions. [2023-08-03 19:50:14,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:50:14,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 615 transitions. [2023-08-03 19:50:14,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 153.75) internal successors, (615), 4 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:14,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:14,192 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:14,192 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 240 flow. Second operand 4 states and 615 transitions. [2023-08-03 19:50:14,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 64 transitions, 354 flow [2023-08-03 19:50:14,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 64 transitions, 352 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:50:14,200 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 236 flow [2023-08-03 19:50:14,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=236, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2023-08-03 19:50:14,200 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 10 predicate places. [2023-08-03 19:50:14,201 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 236 flow [2023-08-03 19:50:14,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 142.6) internal successors, (713), 5 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:14,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:50:14,201 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:50:14,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-03 19:50:14,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:14,406 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:50:14,407 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:50:14,407 INFO L85 PathProgramCache]: Analyzing trace with hash 673691584, now seen corresponding path program 1 times [2023-08-03 19:50:14,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:50:14,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146116425] [2023-08-03 19:50:14,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:14,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:50:14,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:14,486 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 19:50:14,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:50:14,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146116425] [2023-08-03 19:50:14,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146116425] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:50:14,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750280978] [2023-08-03 19:50:14,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:14,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:14,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:50:14,489 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 19:50:14,516 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 19:50:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:14,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:50:14,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:50:14,596 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 19:50:14,596 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:50:14,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750280978] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:50:14,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:50:14,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 19:50:14,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625667225] [2023-08-03 19:50:14,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:50:14,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:50:14,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:50:14,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:50:14,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:50:14,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 309 [2023-08-03 19:50:14,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 236 flow. Second operand has 5 states, 5 states have (on average 142.6) internal successors, (713), 5 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:14,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:50:14,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 309 [2023-08-03 19:50:14,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:50:17,986 INFO L124 PetriNetUnfolderBase]: 19065/28853 cut-off events. [2023-08-03 19:50:17,986 INFO L125 PetriNetUnfolderBase]: For 4289/4289 co-relation queries the response was YES. [2023-08-03 19:50:18,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59955 conditions, 28853 events. 19065/28853 cut-off events. For 4289/4289 co-relation queries the response was YES. Maximal size of possible extension queue 807. Compared 183445 event pairs, 5351 based on Foata normal form. 16/26678 useless extension candidates. Maximal degree in co-relation 36723. Up to 26587 conditions per place. [2023-08-03 19:50:18,115 INFO L140 encePairwiseOnDemand]: 305/309 looper letters, 59 selfloop transitions, 4 changer transitions 0/70 dead transitions. [2023-08-03 19:50:18,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 70 transitions, 382 flow [2023-08-03 19:50:18,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:50:18,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:50:18,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 762 transitions. [2023-08-03 19:50:18,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49320388349514566 [2023-08-03 19:50:18,117 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 762 transitions. [2023-08-03 19:50:18,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 762 transitions. [2023-08-03 19:50:18,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:50:18,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 762 transitions. [2023-08-03 19:50:18,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 152.4) internal successors, (762), 5 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:18,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:18,122 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:18,122 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 236 flow. Second operand 5 states and 762 transitions. [2023-08-03 19:50:18,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 70 transitions, 382 flow [2023-08-03 19:50:18,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 70 transitions, 368 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 19:50:18,129 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 239 flow [2023-08-03 19:50:18,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=239, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2023-08-03 19:50:18,130 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 10 predicate places. [2023-08-03 19:50:18,130 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 239 flow [2023-08-03 19:50:18,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 142.6) internal successors, (713), 5 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:18,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:50:18,131 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] [2023-08-03 19:50:18,137 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 19:50:18,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:18,336 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:50:18,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:50:18,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1857154704, now seen corresponding path program 1 times [2023-08-03 19:50:18,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:50:18,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009890836] [2023-08-03 19:50:18,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:18,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:50:18,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:18,377 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 19:50:18,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:50:18,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009890836] [2023-08-03 19:50:18,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009890836] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:50:18,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895064181] [2023-08-03 19:50:18,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:18,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:18,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:50:18,379 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 19:50:18,382 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 19:50:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:18,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:50:18,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:50:18,472 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:50:18,472 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:50:18,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895064181] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:50:18,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:50:18,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:50:18,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453792601] [2023-08-03 19:50:18,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:50:18,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:50:18,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:50:18,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:50:18,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:50:18,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 309 [2023-08-03 19:50:18,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 239 flow. Second operand has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:18,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:50:18,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 309 [2023-08-03 19:50:18,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:50:21,683 INFO L124 PetriNetUnfolderBase]: 17593/26805 cut-off events. [2023-08-03 19:50:21,683 INFO L125 PetriNetUnfolderBase]: For 3446/3446 co-relation queries the response was YES. [2023-08-03 19:50:21,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55292 conditions, 26805 events. 17593/26805 cut-off events. For 3446/3446 co-relation queries the response was YES. Maximal size of possible extension queue 854. Compared 170521 event pairs, 12582 based on Foata normal form. 0/24806 useless extension candidates. Maximal degree in co-relation 34289. Up to 22628 conditions per place. [2023-08-03 19:50:21,759 INFO L140 encePairwiseOnDemand]: 306/309 looper letters, 65 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-03 19:50:21,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 74 transitions, 415 flow [2023-08-03 19:50:21,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:50:21,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:50:21,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 487 transitions. [2023-08-03 19:50:21,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5253505933117584 [2023-08-03 19:50:21,761 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 487 transitions. [2023-08-03 19:50:21,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 487 transitions. [2023-08-03 19:50:21,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:50:21,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 487 transitions. [2023-08-03 19:50:21,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:21,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:21,765 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:21,765 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 239 flow. Second operand 3 states and 487 transitions. [2023-08-03 19:50:21,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 74 transitions, 415 flow [2023-08-03 19:50:21,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 74 transitions, 408 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:50:21,769 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 244 flow [2023-08-03 19:50:21,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=64, PETRI_TRANSITIONS=61} [2023-08-03 19:50:21,770 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 11 predicate places. [2023-08-03 19:50:21,770 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 244 flow [2023-08-03 19:50:21,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:21,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:50:21,771 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:50:21,779 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 19:50:21,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:21,979 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:50:21,980 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:50:21,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1050719914, now seen corresponding path program 1 times [2023-08-03 19:50:21,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:50:21,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124128113] [2023-08-03 19:50:21,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:21,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:50:21,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:22,058 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:50:22,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:50:22,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124128113] [2023-08-03 19:50:22,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124128113] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:50:22,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054892980] [2023-08-03 19:50:22,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:22,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:22,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:50:22,065 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 19:50:22,068 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 19:50:22,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:22,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:50:22,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:50:22,189 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:50:22,189 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:50:22,204 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:50:22,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054892980] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:50:22,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:50:22,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:50:22,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976213301] [2023-08-03 19:50:22,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:50:22,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:50:22,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:50:22,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:50:22,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:50:22,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 309 [2023-08-03 19:50:22,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 244 flow. Second operand has 5 states, 5 states have (on average 143.6) internal successors, (718), 5 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:22,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:50:22,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 309 [2023-08-03 19:50:22,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:50:24,907 INFO L124 PetriNetUnfolderBase]: 16745/25469 cut-off events. [2023-08-03 19:50:24,907 INFO L125 PetriNetUnfolderBase]: For 4239/4239 co-relation queries the response was YES. [2023-08-03 19:50:24,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54203 conditions, 25469 events. 16745/25469 cut-off events. For 4239/4239 co-relation queries the response was YES. Maximal size of possible extension queue 836. Compared 159561 event pairs, 9446 based on Foata normal form. 8/24143 useless extension candidates. Maximal degree in co-relation 34067. Up to 23572 conditions per place. [2023-08-03 19:50:25,022 INFO L140 encePairwiseOnDemand]: 306/309 looper letters, 58 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2023-08-03 19:50:25,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 68 transitions, 376 flow [2023-08-03 19:50:25,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:50:25,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:50:25,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 619 transitions. [2023-08-03 19:50:25,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5008090614886731 [2023-08-03 19:50:25,024 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 619 transitions. [2023-08-03 19:50:25,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 619 transitions. [2023-08-03 19:50:25,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:50:25,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 619 transitions. [2023-08-03 19:50:25,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 154.75) internal successors, (619), 4 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:25,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:25,028 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:25,028 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 244 flow. Second operand 4 states and 619 transitions. [2023-08-03 19:50:25,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 68 transitions, 376 flow [2023-08-03 19:50:25,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 68 transitions, 374 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:50:25,034 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 240 flow [2023-08-03 19:50:25,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=240, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2023-08-03 19:50:25,035 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 13 predicate places. [2023-08-03 19:50:25,035 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 240 flow [2023-08-03 19:50:25,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.6) internal successors, (718), 5 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:25,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:50:25,035 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:50:25,043 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 19:50:25,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:25,241 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:50:25,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:50:25,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1758391698, now seen corresponding path program 1 times [2023-08-03 19:50:25,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:50:25,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495313363] [2023-08-03 19:50:25,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:25,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:50:25,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:25,317 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 19:50:25,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:50:25,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495313363] [2023-08-03 19:50:25,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495313363] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:50:25,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449487237] [2023-08-03 19:50:25,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:25,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:25,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:50:25,319 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 19:50:25,322 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 19:50:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:25,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:50:25,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:50:25,441 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 19:50:25,441 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:50:25,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449487237] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:50:25,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:50:25,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 19:50:25,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442820910] [2023-08-03 19:50:25,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:50:25,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:50:25,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:50:25,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:50:25,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:50:25,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 309 [2023-08-03 19:50:25,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 240 flow. Second operand has 5 states, 5 states have (on average 143.6) internal successors, (718), 5 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:25,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:50:25,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 309 [2023-08-03 19:50:25,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:50:28,145 INFO L124 PetriNetUnfolderBase]: 16553/25181 cut-off events. [2023-08-03 19:50:28,145 INFO L125 PetriNetUnfolderBase]: For 3835/3835 co-relation queries the response was YES. [2023-08-03 19:50:28,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53351 conditions, 25181 events. 16553/25181 cut-off events. For 3835/3835 co-relation queries the response was YES. Maximal size of possible extension queue 836. Compared 157704 event pairs, 766 based on Foata normal form. 64/23911 useless extension candidates. Maximal degree in co-relation 33649. Up to 22603 conditions per place. [2023-08-03 19:50:28,301 INFO L140 encePairwiseOnDemand]: 305/309 looper letters, 66 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2023-08-03 19:50:28,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 76 transitions, 412 flow [2023-08-03 19:50:28,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:50:28,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:50:28,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 768 transitions. [2023-08-03 19:50:28,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4970873786407767 [2023-08-03 19:50:28,304 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 768 transitions. [2023-08-03 19:50:28,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 768 transitions. [2023-08-03 19:50:28,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:50:28,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 768 transitions. [2023-08-03 19:50:28,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 153.6) internal successors, (768), 5 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:28,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:28,308 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:28,309 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 240 flow. Second operand 5 states and 768 transitions. [2023-08-03 19:50:28,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 76 transitions, 412 flow [2023-08-03 19:50:28,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 76 transitions, 398 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 19:50:28,319 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 243 flow [2023-08-03 19:50:28,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=243, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2023-08-03 19:50:28,320 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 13 predicate places. [2023-08-03 19:50:28,320 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 243 flow [2023-08-03 19:50:28,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.6) internal successors, (718), 5 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:28,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:50:28,321 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] [2023-08-03 19:50:28,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-03 19:50:28,526 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,SelfDestructingSolverStorable9 [2023-08-03 19:50:28,526 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:50:28,527 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:50:28,527 INFO L85 PathProgramCache]: Analyzing trace with hash -2113326933, now seen corresponding path program 1 times [2023-08-03 19:50:28,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:50:28,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483929173] [2023-08-03 19:50:28,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:28,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:50:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:28,597 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 19:50:28,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:50:28,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483929173] [2023-08-03 19:50:28,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483929173] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:50:28,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243160644] [2023-08-03 19:50:28,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:28,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:28,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:50:28,599 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 19:50:28,601 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 19:50:28,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:28,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:50:28,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:50:28,710 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:50:28,710 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:50:28,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243160644] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:50:28,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:50:28,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:50:28,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372772501] [2023-08-03 19:50:28,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:50:28,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:50:28,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:50:28,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:50:28,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:50:28,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 309 [2023-08-03 19:50:28,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 243 flow. Second operand has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:28,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:50:28,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 309 [2023-08-03 19:50:28,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:50:31,463 INFO L124 PetriNetUnfolderBase]: 16344/25328 cut-off events. [2023-08-03 19:50:31,463 INFO L125 PetriNetUnfolderBase]: For 4135/4135 co-relation queries the response was YES. [2023-08-03 19:50:31,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53433 conditions, 25328 events. 16344/25328 cut-off events. For 4135/4135 co-relation queries the response was YES. Maximal size of possible extension queue 759. Compared 163782 event pairs, 10450 based on Foata normal form. 0/24378 useless extension candidates. Maximal degree in co-relation 34552. Up to 17668 conditions per place. [2023-08-03 19:50:31,627 INFO L140 encePairwiseOnDemand]: 306/309 looper letters, 66 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-03 19:50:31,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 74 transitions, 419 flow [2023-08-03 19:50:31,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:50:31,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:50:31,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 487 transitions. [2023-08-03 19:50:31,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5253505933117584 [2023-08-03 19:50:31,630 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 487 transitions. [2023-08-03 19:50:31,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 487 transitions. [2023-08-03 19:50:31,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:50:31,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 487 transitions. [2023-08-03 19:50:31,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:31,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:31,633 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:31,633 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 243 flow. Second operand 3 states and 487 transitions. [2023-08-03 19:50:31,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 74 transitions, 419 flow [2023-08-03 19:50:31,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 74 transitions, 412 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:50:31,642 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 248 flow [2023-08-03 19:50:31,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2023-08-03 19:50:31,643 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 14 predicate places. [2023-08-03 19:50:31,644 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 248 flow [2023-08-03 19:50:31,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:31,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:50:31,644 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] [2023-08-03 19:50:31,650 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 19:50:31,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:31,850 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:50:31,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:50:31,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1476054557, now seen corresponding path program 1 times [2023-08-03 19:50:31,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:50:31,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446638530] [2023-08-03 19:50:31,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:31,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:50:31,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:31,917 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:50:31,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:50:31,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446638530] [2023-08-03 19:50:31,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446638530] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:50:31,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336430603] [2023-08-03 19:50:31,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:31,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:31,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:50:31,920 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 19:50:31,933 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 19:50:32,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:32,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:50:32,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:50:32,064 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:50:32,064 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:50:32,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336430603] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:50:32,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:50:32,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-03 19:50:32,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257713935] [2023-08-03 19:50:32,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:50:32,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:50:32,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:50:32,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:50:32,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:50:32,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 309 [2023-08-03 19:50:32,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:32,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:50:32,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 309 [2023-08-03 19:50:32,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:50:34,632 INFO L124 PetriNetUnfolderBase]: 16615/25971 cut-off events. [2023-08-03 19:50:34,633 INFO L125 PetriNetUnfolderBase]: For 5291/5291 co-relation queries the response was YES. [2023-08-03 19:50:34,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57005 conditions, 25971 events. 16615/25971 cut-off events. For 5291/5291 co-relation queries the response was YES. Maximal size of possible extension queue 728. Compared 169743 event pairs, 12321 based on Foata normal form. 0/25734 useless extension candidates. Maximal degree in co-relation 37425. Up to 20542 conditions per place. [2023-08-03 19:50:34,793 INFO L140 encePairwiseOnDemand]: 306/309 looper letters, 67 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2023-08-03 19:50:34,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 75 transitions, 426 flow [2023-08-03 19:50:34,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:50:34,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:50:34,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 487 transitions. [2023-08-03 19:50:34,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5253505933117584 [2023-08-03 19:50:34,795 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 487 transitions. [2023-08-03 19:50:34,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 487 transitions. [2023-08-03 19:50:34,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:50:34,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 487 transitions. [2023-08-03 19:50:34,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:34,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:34,798 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:34,798 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 248 flow. Second operand 3 states and 487 transitions. [2023-08-03 19:50:34,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 75 transitions, 426 flow [2023-08-03 19:50:34,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 75 transitions, 424 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:50:34,970 INFO L231 Difference]: Finished difference. Result has 69 places, 62 transitions, 258 flow [2023-08-03 19:50:34,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=69, PETRI_TRANSITIONS=62} [2023-08-03 19:50:34,971 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 16 predicate places. [2023-08-03 19:50:34,971 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 62 transitions, 258 flow [2023-08-03 19:50:34,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:34,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:50:34,972 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] [2023-08-03 19:50:34,977 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 19:50:35,176 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,SelfDestructingSolverStorable11 [2023-08-03 19:50:35,176 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:50:35,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:50:35,176 INFO L85 PathProgramCache]: Analyzing trace with hash 2089811871, now seen corresponding path program 1 times [2023-08-03 19:50:35,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:50:35,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937854344] [2023-08-03 19:50:35,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:35,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:50:35,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:35,242 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:50:35,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:50:35,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937854344] [2023-08-03 19:50:35,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937854344] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:50:35,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009634808] [2023-08-03 19:50:35,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:35,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:35,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:50:35,245 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:50:35,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-03 19:50:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:35,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:50:35,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:50:35,382 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:50:35,382 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:50:35,392 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:50:35,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009634808] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:50:35,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:50:35,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:50:35,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460108540] [2023-08-03 19:50:35,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:50:35,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:50:35,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:50:35,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:50:35,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:50:35,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 309 [2023-08-03 19:50:35,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 62 transitions, 258 flow. Second operand has 5 states, 5 states have (on average 146.8) internal successors, (734), 5 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:35,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:50:35,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 309 [2023-08-03 19:50:35,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:50:37,899 INFO L124 PetriNetUnfolderBase]: 16215/25347 cut-off events. [2023-08-03 19:50:37,899 INFO L125 PetriNetUnfolderBase]: For 5005/5005 co-relation queries the response was YES. [2023-08-03 19:50:37,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56386 conditions, 25347 events. 16215/25347 cut-off events. For 5005/5005 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 164014 event pairs, 9491 based on Foata normal form. 32/25375 useless extension candidates. Maximal degree in co-relation 42454. Up to 22968 conditions per place. [2023-08-03 19:50:38,043 INFO L140 encePairwiseOnDemand]: 306/309 looper letters, 64 selfloop transitions, 3 changer transitions 0/73 dead transitions. [2023-08-03 19:50:38,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 73 transitions, 410 flow [2023-08-03 19:50:38,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:50:38,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:50:38,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 623 transitions. [2023-08-03 19:50:38,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5040453074433657 [2023-08-03 19:50:38,045 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 623 transitions. [2023-08-03 19:50:38,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 623 transitions. [2023-08-03 19:50:38,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:50:38,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 623 transitions. [2023-08-03 19:50:38,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:38,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:38,048 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:38,048 INFO L175 Difference]: Start difference. First operand has 69 places, 62 transitions, 258 flow. Second operand 4 states and 623 transitions. [2023-08-03 19:50:38,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 73 transitions, 410 flow [2023-08-03 19:50:38,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 73 transitions, 408 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:50:38,315 INFO L231 Difference]: Finished difference. Result has 71 places, 61 transitions, 254 flow [2023-08-03 19:50:38,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=254, PETRI_PLACES=71, PETRI_TRANSITIONS=61} [2023-08-03 19:50:38,316 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 18 predicate places. [2023-08-03 19:50:38,316 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 61 transitions, 254 flow [2023-08-03 19:50:38,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 146.8) internal successors, (734), 5 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:38,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:50:38,317 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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 19:50:38,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-03 19:50:38,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-03 19:50:38,522 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:50:38,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:50:38,522 INFO L85 PathProgramCache]: Analyzing trace with hash -59278210, now seen corresponding path program 1 times [2023-08-03 19:50:38,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:50:38,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456714757] [2023-08-03 19:50:38,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:38,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:50:38,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:38,590 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 19:50:38,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:50:38,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456714757] [2023-08-03 19:50:38,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456714757] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:50:38,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206501663] [2023-08-03 19:50:38,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:38,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:38,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:50:38,593 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:50:38,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-03 19:50:38,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:38,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:50:38,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:50:38,733 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 19:50:38,733 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:50:38,746 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 19:50:38,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206501663] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:50:38,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:50:38,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:50:38,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910218467] [2023-08-03 19:50:38,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:50:38,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:50:38,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:50:38,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:50:38,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:50:38,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 309 [2023-08-03 19:50:38,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 61 transitions, 254 flow. Second operand has 5 states, 5 states have (on average 147.0) internal successors, (735), 5 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:38,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:50:38,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 309 [2023-08-03 19:50:38,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:50:40,418 INFO L124 PetriNetUnfolderBase]: 10315/16383 cut-off events. [2023-08-03 19:50:40,418 INFO L125 PetriNetUnfolderBase]: For 3568/3568 co-relation queries the response was YES. [2023-08-03 19:50:40,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36473 conditions, 16383 events. 10315/16383 cut-off events. For 3568/3568 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 98932 event pairs, 5374 based on Foata normal form. 192/16571 useless extension candidates. Maximal degree in co-relation 31654. Up to 9425 conditions per place. [2023-08-03 19:50:40,506 INFO L140 encePairwiseOnDemand]: 305/309 looper letters, 71 selfloop transitions, 4 changer transitions 0/81 dead transitions. [2023-08-03 19:50:40,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 81 transitions, 456 flow [2023-08-03 19:50:40,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:50:40,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:50:40,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 631 transitions. [2023-08-03 19:50:40,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5105177993527508 [2023-08-03 19:50:40,508 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 631 transitions. [2023-08-03 19:50:40,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 631 transitions. [2023-08-03 19:50:40,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:50:40,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 631 transitions. [2023-08-03 19:50:40,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 157.75) internal successors, (631), 4 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:40,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:40,512 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:40,512 INFO L175 Difference]: Start difference. First operand has 71 places, 61 transitions, 254 flow. Second operand 4 states and 631 transitions. [2023-08-03 19:50:40,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 81 transitions, 456 flow [2023-08-03 19:50:40,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 81 transitions, 450 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:50:40,584 INFO L231 Difference]: Finished difference. Result has 73 places, 62 transitions, 268 flow [2023-08-03 19:50:40,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=268, PETRI_PLACES=73, PETRI_TRANSITIONS=62} [2023-08-03 19:50:40,584 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 20 predicate places. [2023-08-03 19:50:40,585 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 62 transitions, 268 flow [2023-08-03 19:50:40,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 147.0) internal successors, (735), 5 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:40,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:50:40,585 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2023-08-03 19:50:40,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-03 19:50:40,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-03 19:50:40,789 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:50:40,789 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:50:40,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1454226338, now seen corresponding path program 1 times [2023-08-03 19:50:40,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:50:40,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012139997] [2023-08-03 19:50:40,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:40,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:50:40,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:40,939 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 19:50:40,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:50:40,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012139997] [2023-08-03 19:50:40,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012139997] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:50:40,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121625072] [2023-08-03 19:50:40,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:40,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:40,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:50:40,941 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:50:40,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-03 19:50:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:41,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:50:41,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:50:41,085 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 19:50:41,085 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:50:41,100 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 19:50:41,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121625072] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:50:41,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:50:41,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:50:41,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562528124] [2023-08-03 19:50:41,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:50:41,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:50:41,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:50:41,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:50:41,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:50:41,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 309 [2023-08-03 19:50:41,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 268 flow. Second operand has 5 states, 5 states have (on average 147.4) internal successors, (737), 5 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:41,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:50:41,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 309 [2023-08-03 19:50:41,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:50:42,607 INFO L124 PetriNetUnfolderBase]: 9415/14912 cut-off events. [2023-08-03 19:50:42,607 INFO L125 PetriNetUnfolderBase]: For 6527/6527 co-relation queries the response was YES. [2023-08-03 19:50:42,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35831 conditions, 14912 events. 9415/14912 cut-off events. For 6527/6527 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 87993 event pairs, 5942 based on Foata normal form. 233/15141 useless extension candidates. Maximal degree in co-relation 34761. Up to 8732 conditions per place. [2023-08-03 19:50:42,685 INFO L140 encePairwiseOnDemand]: 305/309 looper letters, 72 selfloop transitions, 4 changer transitions 0/82 dead transitions. [2023-08-03 19:50:42,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 82 transitions, 472 flow [2023-08-03 19:50:42,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:50:42,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:50:42,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 631 transitions. [2023-08-03 19:50:42,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5105177993527508 [2023-08-03 19:50:42,687 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 631 transitions. [2023-08-03 19:50:42,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 631 transitions. [2023-08-03 19:50:42,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:50:42,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 631 transitions. [2023-08-03 19:50:42,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 157.75) internal successors, (631), 4 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:42,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:42,691 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:42,691 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 268 flow. Second operand 4 states and 631 transitions. [2023-08-03 19:50:42,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 82 transitions, 472 flow [2023-08-03 19:50:42,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 82 transitions, 468 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 19:50:42,760 INFO L231 Difference]: Finished difference. Result has 77 places, 63 transitions, 284 flow [2023-08-03 19:50:42,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=284, PETRI_PLACES=77, PETRI_TRANSITIONS=63} [2023-08-03 19:50:42,760 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 24 predicate places. [2023-08-03 19:50:42,760 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 63 transitions, 284 flow [2023-08-03 19:50:42,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 147.4) internal successors, (737), 5 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:42,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:50:42,761 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-08-03 19:50:42,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-03 19:50:42,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-03 19:50:42,962 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:50:42,962 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:50:42,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1809701754, now seen corresponding path program 1 times [2023-08-03 19:50:42,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:50:42,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291664742] [2023-08-03 19:50:42,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:42,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:50:42,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:43,051 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:50:43,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:50:43,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291664742] [2023-08-03 19:50:43,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291664742] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:50:43,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267344152] [2023-08-03 19:50:43,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:43,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:43,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:50:43,053 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:50:43,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-03 19:50:43,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:43,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:50:43,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:50:43,193 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:50:43,193 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:50:43,205 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:50:43,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267344152] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:50:43,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:50:43,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 19:50:43,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263968179] [2023-08-03 19:50:43,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:50:43,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:50:43,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:50:43,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:50:43,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:50:43,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 309 [2023-08-03 19:50:43,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 63 transitions, 284 flow. Second operand has 5 states, 5 states have (on average 147.8) internal successors, (739), 5 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:43,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:50:43,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 309 [2023-08-03 19:50:43,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:50:44,744 INFO L124 PetriNetUnfolderBase]: 9409/14895 cut-off events. [2023-08-03 19:50:44,744 INFO L125 PetriNetUnfolderBase]: For 7481/7481 co-relation queries the response was YES. [2023-08-03 19:50:44,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37500 conditions, 14895 events. 9409/14895 cut-off events. For 7481/7481 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 87855 event pairs, 8414 based on Foata normal form. 13/14904 useless extension candidates. Maximal degree in co-relation 36401. Up to 13453 conditions per place. [2023-08-03 19:50:44,811 INFO L140 encePairwiseOnDemand]: 305/309 looper letters, 71 selfloop transitions, 3 changer transitions 3/83 dead transitions. [2023-08-03 19:50:44,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 83 transitions, 490 flow [2023-08-03 19:50:44,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:50:44,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:50:44,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 631 transitions. [2023-08-03 19:50:44,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5105177993527508 [2023-08-03 19:50:44,813 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 631 transitions. [2023-08-03 19:50:44,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 631 transitions. [2023-08-03 19:50:44,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:50:44,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 631 transitions. [2023-08-03 19:50:44,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 157.75) internal successors, (631), 4 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:44,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:44,817 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:44,817 INFO L175 Difference]: Start difference. First operand has 77 places, 63 transitions, 284 flow. Second operand 4 states and 631 transitions. [2023-08-03 19:50:44,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 83 transitions, 490 flow [2023-08-03 19:50:44,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 83 transitions, 486 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 19:50:44,949 INFO L231 Difference]: Finished difference. Result has 81 places, 61 transitions, 282 flow [2023-08-03 19:50:44,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=282, PETRI_PLACES=81, PETRI_TRANSITIONS=61} [2023-08-03 19:50:44,950 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 28 predicate places. [2023-08-03 19:50:44,950 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 61 transitions, 282 flow [2023-08-03 19:50:44,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 147.8) internal successors, (739), 5 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:44,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:50:44,951 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-08-03 19:50:44,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-08-03 19:50:45,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:45,156 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:50:45,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:50:45,156 INFO L85 PathProgramCache]: Analyzing trace with hash -935182399, now seen corresponding path program 1 times [2023-08-03 19:50:45,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:50:45,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382862541] [2023-08-03 19:50:45,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:45,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:50:45,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:47,178 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 19:50:47,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:50:47,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382862541] [2023-08-03 19:50:47,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382862541] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:50:47,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386434251] [2023-08-03 19:50:47,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:47,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:47,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:50:47,181 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:50:47,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-03 19:50:47,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:47,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-03 19:50:47,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:50:49,315 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 19:50:49,315 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:50:51,270 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:50:51,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386434251] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:50:51,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:50:51,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 12 [2023-08-03 19:50:51,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288236405] [2023-08-03 19:50:51,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:50:51,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-03 19:50:51,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:50:51,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-03 19:50:51,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-08-03 19:50:51,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 309 [2023-08-03 19:50:51,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 61 transitions, 282 flow. Second operand has 13 states, 13 states have (on average 134.76923076923077) internal successors, (1752), 13 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:51,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:50:51,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 309 [2023-08-03 19:50:51,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:50:54,962 INFO L124 PetriNetUnfolderBase]: 15094/23933 cut-off events. [2023-08-03 19:50:54,962 INFO L125 PetriNetUnfolderBase]: For 16718/16718 co-relation queries the response was YES. [2023-08-03 19:50:55,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60072 conditions, 23933 events. 15094/23933 cut-off events. For 16718/16718 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 161985 event pairs, 996 based on Foata normal form. 2/23794 useless extension candidates. Maximal degree in co-relation 59985. Up to 6575 conditions per place. [2023-08-03 19:50:55,115 INFO L140 encePairwiseOnDemand]: 302/309 looper letters, 126 selfloop transitions, 5 changer transitions 89/226 dead transitions. [2023-08-03 19:50:55,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 226 transitions, 1519 flow [2023-08-03 19:50:55,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-03 19:50:55,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-03 19:50:55,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1087 transitions. [2023-08-03 19:50:55,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.502542764678687 [2023-08-03 19:50:55,117 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1087 transitions. [2023-08-03 19:50:55,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1087 transitions. [2023-08-03 19:50:55,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:50:55,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1087 transitions. [2023-08-03 19:50:55,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 155.28571428571428) internal successors, (1087), 7 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:55,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 309.0) internal successors, (2472), 8 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:55,123 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 309.0) internal successors, (2472), 8 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:55,123 INFO L175 Difference]: Start difference. First operand has 81 places, 61 transitions, 282 flow. Second operand 7 states and 1087 transitions. [2023-08-03 19:50:55,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 226 transitions, 1519 flow [2023-08-03 19:50:55,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 226 transitions, 1473 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-03 19:50:55,446 INFO L231 Difference]: Finished difference. Result has 88 places, 66 transitions, 331 flow [2023-08-03 19:50:55,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=331, PETRI_PLACES=88, PETRI_TRANSITIONS=66} [2023-08-03 19:50:55,447 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 35 predicate places. [2023-08-03 19:50:55,447 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 66 transitions, 331 flow [2023-08-03 19:50:55,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 134.76923076923077) internal successors, (1752), 13 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:55,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:50:55,448 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-08-03 19:50:55,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-03 19:50:55,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-03 19:50:55,654 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:50:55,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:50:55,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1541527333, now seen corresponding path program 1 times [2023-08-03 19:50:55,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:50:55,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369142641] [2023-08-03 19:50:55,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:55,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:50:55,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:58,420 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-03 19:50:58,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:50:58,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369142641] [2023-08-03 19:50:58,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369142641] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:50:58,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878732378] [2023-08-03 19:50:58,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:58,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:58,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:50:58,426 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:50:58,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-03 19:50:58,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:58,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-03 19:50:58,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:50:59,831 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-03 19:50:59,831 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:51:01,252 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-03 19:51:01,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878732378] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:51:01,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:51:01,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-08-03 19:51:01,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443085682] [2023-08-03 19:51:01,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:51:01,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-03 19:51:01,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:51:01,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-03 19:51:01,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-08-03 19:51:01,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 309 [2023-08-03 19:51:01,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 66 transitions, 331 flow. Second operand has 10 states, 10 states have (on average 134.9) internal successors, (1349), 10 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:01,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:51:01,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 309 [2023-08-03 19:51:01,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:51:04,862 INFO L124 PetriNetUnfolderBase]: 18205/30637 cut-off events. [2023-08-03 19:51:04,862 INFO L125 PetriNetUnfolderBase]: For 48681/48681 co-relation queries the response was YES. [2023-08-03 19:51:05,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100939 conditions, 30637 events. 18205/30637 cut-off events. For 48681/48681 co-relation queries the response was YES. Maximal size of possible extension queue 956. Compared 238021 event pairs, 1995 based on Foata normal form. 2/30470 useless extension candidates. Maximal degree in co-relation 100114. Up to 11547 conditions per place. [2023-08-03 19:51:05,121 INFO L140 encePairwiseOnDemand]: 302/309 looper letters, 169 selfloop transitions, 12 changer transitions 3/190 dead transitions. [2023-08-03 19:51:05,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 190 transitions, 1342 flow [2023-08-03 19:51:05,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:51:05,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:51:05,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 788 transitions. [2023-08-03 19:51:05,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.510032362459547 [2023-08-03 19:51:05,123 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 788 transitions. [2023-08-03 19:51:05,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 788 transitions. [2023-08-03 19:51:05,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:51:05,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 788 transitions. [2023-08-03 19:51:05,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 157.6) internal successors, (788), 5 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:05,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:05,126 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:05,126 INFO L175 Difference]: Start difference. First operand has 88 places, 66 transitions, 331 flow. Second operand 5 states and 788 transitions. [2023-08-03 19:51:05,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 190 transitions, 1342 flow [2023-08-03 19:51:05,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 190 transitions, 1310 flow, removed 16 selfloop flow, removed 1 redundant places. [2023-08-03 19:51:05,556 INFO L231 Difference]: Finished difference. Result has 93 places, 78 transitions, 453 flow [2023-08-03 19:51:05,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=453, PETRI_PLACES=93, PETRI_TRANSITIONS=78} [2023-08-03 19:51:05,557 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 40 predicate places. [2023-08-03 19:51:05,557 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 78 transitions, 453 flow [2023-08-03 19:51:05,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 134.9) internal successors, (1349), 10 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:05,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:51:05,558 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-08-03 19:51:05,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-03 19:51:05,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-03 19:51:05,763 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:51:05,763 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:51:05,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1072407909, now seen corresponding path program 1 times [2023-08-03 19:51:05,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:51:05,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29378833] [2023-08-03 19:51:05,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:51:05,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:51:05,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:51:07,082 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-03 19:51:07,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:51:07,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29378833] [2023-08-03 19:51:07,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29378833] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:51:07,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227156929] [2023-08-03 19:51:07,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:51:07,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:51:07,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:51:07,085 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:51:07,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-03 19:51:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:51:07,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-03 19:51:07,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:51:08,827 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-03 19:51:08,827 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:51:10,638 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-03 19:51:10,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227156929] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:51:10,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:51:10,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 10 [2023-08-03 19:51:10,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998679729] [2023-08-03 19:51:10,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:51:10,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-03 19:51:10,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:51:10,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-03 19:51:10,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-08-03 19:51:10,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 309 [2023-08-03 19:51:10,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 78 transitions, 453 flow. Second operand has 11 states, 11 states have (on average 135.54545454545453) internal successors, (1491), 11 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:10,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:51:10,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 309 [2023-08-03 19:51:10,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:51:16,352 INFO L124 PetriNetUnfolderBase]: 22911/39521 cut-off events. [2023-08-03 19:51:16,352 INFO L125 PetriNetUnfolderBase]: For 106238/106238 co-relation queries the response was YES. [2023-08-03 19:51:16,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148079 conditions, 39521 events. 22911/39521 cut-off events. For 106238/106238 co-relation queries the response was YES. Maximal size of possible extension queue 1262. Compared 326994 event pairs, 4091 based on Foata normal form. 2/39337 useless extension candidates. Maximal degree in co-relation 148037. Up to 18088 conditions per place. [2023-08-03 19:51:16,536 INFO L140 encePairwiseOnDemand]: 302/309 looper letters, 131 selfloop transitions, 9 changer transitions 57/203 dead transitions. [2023-08-03 19:51:16,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 203 transitions, 1535 flow [2023-08-03 19:51:16,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 19:51:16,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 19:51:16,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 918 transitions. [2023-08-03 19:51:16,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49514563106796117 [2023-08-03 19:51:16,538 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 918 transitions. [2023-08-03 19:51:16,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 918 transitions. [2023-08-03 19:51:16,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:51:16,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 918 transitions. [2023-08-03 19:51:16,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 153.0) internal successors, (918), 6 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:16,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 309.0) internal successors, (2163), 7 states have internal predecessors, (2163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:16,541 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 309.0) internal successors, (2163), 7 states have internal predecessors, (2163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:16,541 INFO L175 Difference]: Start difference. First operand has 93 places, 78 transitions, 453 flow. Second operand 6 states and 918 transitions. [2023-08-03 19:51:16,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 203 transitions, 1535 flow [2023-08-03 19:51:17,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 203 transitions, 1531 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-03 19:51:17,137 INFO L231 Difference]: Finished difference. Result has 100 places, 83 transitions, 548 flow [2023-08-03 19:51:17,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=548, PETRI_PLACES=100, PETRI_TRANSITIONS=83} [2023-08-03 19:51:17,137 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 47 predicate places. [2023-08-03 19:51:17,138 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 83 transitions, 548 flow [2023-08-03 19:51:17,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 135.54545454545453) internal successors, (1491), 11 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:17,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:51:17,138 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-08-03 19:51:17,144 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-08-03 19:51:17,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:51:17,343 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:51:17,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:51:17,344 INFO L85 PathProgramCache]: Analyzing trace with hash -896419141, now seen corresponding path program 2 times [2023-08-03 19:51:17,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:51:17,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502957982] [2023-08-03 19:51:17,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:51:17,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:51:17,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:51:18,271 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:51:18,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:51:18,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502957982] [2023-08-03 19:51:18,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502957982] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:51:18,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653561604] [2023-08-03 19:51:18,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 19:51:18,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:51:18,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:51:18,273 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:51:18,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-03 19:51:18,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 19:51:18,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 19:51:18,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-03 19:51:18,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:51:19,740 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:51:19,740 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:51:20,671 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:51:20,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653561604] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:51:20,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:51:20,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 18 [2023-08-03 19:51:20,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017946474] [2023-08-03 19:51:20,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:51:20,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-03 19:51:20,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:51:20,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-03 19:51:20,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2023-08-03 19:51:21,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 309 [2023-08-03 19:51:21,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 83 transitions, 548 flow. Second operand has 18 states, 18 states have (on average 112.11111111111111) internal successors, (2018), 18 states have internal predecessors, (2018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:21,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:51:21,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 309 [2023-08-03 19:51:21,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:51:28,193 INFO L124 PetriNetUnfolderBase]: 22551/40379 cut-off events. [2023-08-03 19:51:28,194 INFO L125 PetriNetUnfolderBase]: For 158655/158655 co-relation queries the response was YES. [2023-08-03 19:51:28,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164080 conditions, 40379 events. 22551/40379 cut-off events. For 158655/158655 co-relation queries the response was YES. Maximal size of possible extension queue 1325. Compared 350791 event pairs, 2137 based on Foata normal form. 549/40775 useless extension candidates. Maximal degree in co-relation 164041. Up to 10208 conditions per place. [2023-08-03 19:51:28,397 INFO L140 encePairwiseOnDemand]: 289/309 looper letters, 219 selfloop transitions, 76 changer transitions 94/393 dead transitions. [2023-08-03 19:51:28,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 393 transitions, 3632 flow [2023-08-03 19:51:28,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-03 19:51:28,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-03 19:51:28,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2480 transitions. [2023-08-03 19:51:28,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3821852365541686 [2023-08-03 19:51:28,405 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2480 transitions. [2023-08-03 19:51:28,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2480 transitions. [2023-08-03 19:51:28,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:51:28,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2480 transitions. [2023-08-03 19:51:28,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 118.0952380952381) internal successors, (2480), 21 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:28,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 309.0) internal successors, (6798), 22 states have internal predecessors, (6798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:28,413 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 309.0) internal successors, (6798), 22 states have internal predecessors, (6798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:28,413 INFO L175 Difference]: Start difference. First operand has 100 places, 83 transitions, 548 flow. Second operand 21 states and 2480 transitions. [2023-08-03 19:51:28,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 393 transitions, 3632 flow [2023-08-03 19:51:29,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 393 transitions, 3558 flow, removed 16 selfloop flow, removed 2 redundant places. [2023-08-03 19:51:29,053 INFO L231 Difference]: Finished difference. Result has 130 places, 141 transitions, 1370 flow [2023-08-03 19:51:29,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1370, PETRI_PLACES=130, PETRI_TRANSITIONS=141} [2023-08-03 19:51:29,053 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 77 predicate places. [2023-08-03 19:51:29,053 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 141 transitions, 1370 flow [2023-08-03 19:51:29,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 112.11111111111111) internal successors, (2018), 18 states have internal predecessors, (2018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:29,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:51:29,054 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-08-03 19:51:29,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-08-03 19:51:29,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:51:29,377 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:51:29,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:51:29,377 INFO L85 PathProgramCache]: Analyzing trace with hash 881352809, now seen corresponding path program 2 times [2023-08-03 19:51:29,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:51:29,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301909309] [2023-08-03 19:51:29,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:51:29,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:51:29,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:51:30,556 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-08-03 19:51:30,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:51:30,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301909309] [2023-08-03 19:51:30,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301909309] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:51:30,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421395159] [2023-08-03 19:51:30,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 19:51:30,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:51:30,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:51:30,562 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:51:30,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-03 19:51:30,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 19:51:30,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 19:51:30,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-03 19:51:30,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:51:32,152 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-08-03 19:51:32,152 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:51:34,145 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-08-03 19:51:34,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421395159] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:51:34,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:51:34,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 12 [2023-08-03 19:51:34,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683755086] [2023-08-03 19:51:34,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:51:34,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-03 19:51:34,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:51:34,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-03 19:51:34,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-08-03 19:51:34,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 309 [2023-08-03 19:51:34,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 141 transitions, 1370 flow. Second operand has 13 states, 13 states have (on average 133.92307692307693) internal successors, (1741), 13 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:34,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:51:34,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 309 [2023-08-03 19:51:34,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:51:38,970 INFO L124 PetriNetUnfolderBase]: 15185/28698 cut-off events. [2023-08-03 19:51:38,971 INFO L125 PetriNetUnfolderBase]: For 211768/211783 co-relation queries the response was YES. [2023-08-03 19:51:39,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148670 conditions, 28698 events. 15185/28698 cut-off events. For 211768/211783 co-relation queries the response was YES. Maximal size of possible extension queue 1013. Compared 252687 event pairs, 2468 based on Foata normal form. 11/28577 useless extension candidates. Maximal degree in co-relation 148164. Up to 15756 conditions per place. [2023-08-03 19:51:39,157 INFO L140 encePairwiseOnDemand]: 302/309 looper letters, 131 selfloop transitions, 24 changer transitions 102/267 dead transitions. [2023-08-03 19:51:39,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 267 transitions, 2747 flow [2023-08-03 19:51:39,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:51:39,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:51:39,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 791 transitions. [2023-08-03 19:51:39,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119741100323625 [2023-08-03 19:51:39,159 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 791 transitions. [2023-08-03 19:51:39,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 791 transitions. [2023-08-03 19:51:39,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:51:39,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 791 transitions. [2023-08-03 19:51:39,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 158.2) internal successors, (791), 5 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:39,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:39,162 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:39,162 INFO L175 Difference]: Start difference. First operand has 130 places, 141 transitions, 1370 flow. Second operand 5 states and 791 transitions. [2023-08-03 19:51:39,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 267 transitions, 2747 flow [2023-08-03 19:51:40,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 267 transitions, 2541 flow, removed 85 selfloop flow, removed 7 redundant places. [2023-08-03 19:51:40,501 INFO L231 Difference]: Finished difference. Result has 127 places, 113 transitions, 978 flow [2023-08-03 19:51:40,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=1209, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=978, PETRI_PLACES=127, PETRI_TRANSITIONS=113} [2023-08-03 19:51:40,501 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 74 predicate places. [2023-08-03 19:51:40,501 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 113 transitions, 978 flow [2023-08-03 19:51:40,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 133.92307692307693) internal successors, (1741), 13 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:40,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:51:40,502 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-08-03 19:51:40,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-03 19:51:40,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:51:40,702 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:51:40,703 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:51:40,703 INFO L85 PathProgramCache]: Analyzing trace with hash 34932655, now seen corresponding path program 1 times [2023-08-03 19:51:40,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:51:40,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825839697] [2023-08-03 19:51:40,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:51:40,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:51:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:51:42,091 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-08-03 19:51:42,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:51:42,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825839697] [2023-08-03 19:51:42,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825839697] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:51:42,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:51:42,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 19:51:42,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178331165] [2023-08-03 19:51:42,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:51:42,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:51:42,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:51:42,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:51:42,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:51:42,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 309 [2023-08-03 19:51:42,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 113 transitions, 978 flow. Second operand has 5 states, 5 states have (on average 134.6) internal successors, (673), 5 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:42,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:51:42,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 309 [2023-08-03 19:51:42,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:51:44,216 INFO L124 PetriNetUnfolderBase]: 7618/14839 cut-off events. [2023-08-03 19:51:44,216 INFO L125 PetriNetUnfolderBase]: For 104334/104378 co-relation queries the response was YES. [2023-08-03 19:51:44,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76323 conditions, 14839 events. 7618/14839 cut-off events. For 104334/104378 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 122248 event pairs, 1001 based on Foata normal form. 29/14784 useless extension candidates. Maximal degree in co-relation 76283. Up to 6520 conditions per place. [2023-08-03 19:51:44,269 INFO L140 encePairwiseOnDemand]: 302/309 looper letters, 0 selfloop transitions, 0 changer transitions 185/185 dead transitions. [2023-08-03 19:51:44,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 185 transitions, 1784 flow [2023-08-03 19:51:44,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:51:44,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:51:44,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 753 transitions. [2023-08-03 19:51:44,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.487378640776699 [2023-08-03 19:51:44,271 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 753 transitions. [2023-08-03 19:51:44,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 753 transitions. [2023-08-03 19:51:44,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:51:44,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 753 transitions. [2023-08-03 19:51:44,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.6) internal successors, (753), 5 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:44,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:44,273 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:44,273 INFO L175 Difference]: Start difference. First operand has 127 places, 113 transitions, 978 flow. Second operand 5 states and 753 transitions. [2023-08-03 19:51:44,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 185 transitions, 1784 flow [2023-08-03 19:51:44,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 185 transitions, 1676 flow, removed 22 selfloop flow, removed 11 redundant places. [2023-08-03 19:51:44,746 INFO L231 Difference]: Finished difference. Result has 112 places, 0 transitions, 0 flow [2023-08-03 19:51:44,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=885, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=112, PETRI_TRANSITIONS=0} [2023-08-03 19:51:44,746 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 59 predicate places. [2023-08-03 19:51:44,746 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 0 transitions, 0 flow [2023-08-03 19:51:44,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 134.6) internal successors, (673), 5 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:44,747 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-03 19:51:44,747 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-03 19:51:44,747 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 19:51:44,747 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 19:51:44,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-03 19:51:44,747 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:51:44,749 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 19:51:44,749 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 19:51:44,751 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 07:51:44 BasicIcfg [2023-08-03 19:51:44,751 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 19:51:44,752 INFO L158 Benchmark]: Toolchain (without parser) took 124747.19ms. Allocated memory was 589.3MB in the beginning and 11.9GB in the end (delta: 11.3GB). Free memory was 533.3MB in the beginning and 9.0GB in the end (delta: -8.4GB). Peak memory consumption was 3.4GB. Max. memory is 16.0GB. [2023-08-03 19:51:44,752 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 377.5MB. Free memory is still 321.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 19:51:44,752 INFO L158 Benchmark]: CACSL2BoogieTranslator took 217.58ms. Allocated memory is still 589.3MB. Free memory was 533.0MB in the beginning and 521.2MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-03 19:51:44,752 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.73ms. Allocated memory is still 589.3MB. Free memory was 521.2MB in the beginning and 518.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 19:51:44,753 INFO L158 Benchmark]: Boogie Preprocessor took 31.71ms. Allocated memory is still 589.3MB. Free memory was 518.6MB in the beginning and 516.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 19:51:44,753 INFO L158 Benchmark]: RCFGBuilder took 945.36ms. Allocated memory is still 589.3MB. Free memory was 516.8MB in the beginning and 512.6MB in the end (delta: 4.2MB). Peak memory consumption was 39.7MB. Max. memory is 16.0GB. [2023-08-03 19:51:44,753 INFO L158 Benchmark]: TraceAbstraction took 123507.81ms. Allocated memory was 589.3MB in the beginning and 11.9GB in the end (delta: 11.3GB). Free memory was 511.5MB in the beginning and 9.0GB in the end (delta: -8.5GB). Peak memory consumption was 3.3GB. Max. memory is 16.0GB. [2023-08-03 19:51:44,754 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 377.5MB. Free memory is still 321.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 217.58ms. Allocated memory is still 589.3MB. Free memory was 533.0MB in the beginning and 521.2MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 38.73ms. Allocated memory is still 589.3MB. Free memory was 521.2MB in the beginning and 518.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.71ms. Allocated memory is still 589.3MB. Free memory was 518.6MB in the beginning and 516.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 945.36ms. Allocated memory is still 589.3MB. Free memory was 516.8MB in the beginning and 512.6MB in the end (delta: 4.2MB). Peak memory consumption was 39.7MB. Max. memory is 16.0GB. * TraceAbstraction took 123507.81ms. Allocated memory was 589.3MB in the beginning and 11.9GB in the end (delta: 11.3GB). Free memory was 511.5MB in the beginning and 9.0GB in the end (delta: -8.5GB). Peak memory consumption was 3.3GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.1s, 143 PlacesBefore, 38 PlacesAfterwards, 152 TransitionsBefore, 40 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 57 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 7 ChoiceCompositions, 123 TotalNumberOfCompositions, 3951 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3156, independent: 3094, independent conditional: 0, independent unconditional: 3094, dependent: 62, dependent conditional: 0, dependent unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 716, independent: 702, independent conditional: 0, independent unconditional: 702, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3156, independent: 2392, independent conditional: 0, independent unconditional: 2392, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 716, unknown conditional: 0, unknown unconditional: 716] , Statistics on independence cache: Total cache size (in pairs): 82, Positive cache size: 79, Positive conditional cache size: 0, Positive unconditional cache size: 79, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.6s, 161 PlacesBefore, 53 PlacesAfterwards, 173 TransitionsBefore, 58 TransitionsAfterwards, 3060 CoEnabledTransitionPairs, 7 FixpointIterations, 57 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 7 ChoiceCompositions, 126 TotalNumberOfCompositions, 13125 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8329, independent: 8206, independent conditional: 0, independent unconditional: 8206, dependent: 123, dependent conditional: 0, dependent unconditional: 123, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1790, independent: 1774, independent conditional: 0, independent unconditional: 1774, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 8329, independent: 6432, independent conditional: 0, independent unconditional: 6432, dependent: 107, dependent conditional: 0, dependent unconditional: 107, unknown: 1790, unknown conditional: 0, unknown unconditional: 1790] , Statistics on independence cache: Total cache size (in pairs): 172, Positive cache size: 168, Positive conditional cache size: 0, Positive unconditional cache size: 168, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 93]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 159 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.5s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.4s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=122occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 10 procedures, 171 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 117.8s, OverallIterations: 21, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 77.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2563 SdHoareTripleChecker+Valid, 6.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2204 mSDsluCounter, 2996 SdHoareTripleChecker+Invalid, 4.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2614 mSDsCounter, 145 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8088 IncrementalHoareTripleChecker+Invalid, 8233 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 145 mSolverCounterUnsat, 382 mSDtfsCounter, 8088 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1367 GetRequests, 1222 SyntacticMatches, 16 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1370occurred in iteration=19, InterpolantAutomatonStates: 106, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 26.1s InterpolantComputationTime, 1506 NumberOfCodeBlocks, 1506 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 1996 ConstructedInterpolants, 0 QuantifiedInterpolants, 35799 SizeOfPredicates, 197 NumberOfNonLiveVariables, 3786 ConjunctsInSsa, 83 ConjunctsInUnsatCore, 51 InterpolantComputations, 10 PerfectInterpolantSequences, 923/1037 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 19:51:44,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...