/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-collitem-symm.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 19:35:49,272 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 19:35:49,327 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 19:35:49,333 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 19:35:49,333 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 19:35:49,334 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 19:35:49,334 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 19:35:49,370 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 19:35:49,371 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 19:35:49,371 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 19:35:49,372 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 19:35:49,372 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 19:35:49,373 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 19:35:49,373 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 19:35:49,374 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 19:35:49,374 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 19:35:49,374 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 19:35:49,375 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 19:35:49,375 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 19:35:49,375 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 19:35:49,376 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 19:35:49,376 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 19:35:49,376 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 19:35:49,377 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 19:35:49,377 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 19:35:49,377 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 19:35:49,378 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 19:35:49,378 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 19:35:49,378 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 19:35:49,378 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 19:35:49,379 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:35:49,379 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 19:35:49,379 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 19:35:49,380 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 19:35:49,380 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 19:35:49,380 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 19:35:49,381 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 19:35:49,381 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 19:35:49,381 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 19:35:49,381 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 19:35:49,382 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 19:35:49,382 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 19:35:49,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 19:35:49,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 19:35:49,658 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 19:35:49,660 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 19:35:49,661 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 19:35:49,662 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-collitem-symm.wvr_bound2.c [2023-08-03 19:35:50,853 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 19:35:51,065 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 19:35:51,066 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-collitem-symm.wvr_bound2.c [2023-08-03 19:35:51,073 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17db93400/a55bd67d87e945c8b2538cd879a80a92/FLAGf7f6094e0 [2023-08-03 19:35:51,086 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17db93400/a55bd67d87e945c8b2538cd879a80a92 [2023-08-03 19:35:51,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 19:35:51,090 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 19:35:51,091 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 19:35:51,091 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 19:35:51,097 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 19:35:51,098 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:35:51" (1/1) ... [2023-08-03 19:35:51,099 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@268636af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:35:51, skipping insertion in model container [2023-08-03 19:35:51,099 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:35:51" (1/1) ... [2023-08-03 19:35:51,120 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 19:35:51,291 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-collitem-symm.wvr_bound2.c[3148,3161] [2023-08-03 19:35:51,294 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:35:51,302 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 19:35:51,324 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-collitem-symm.wvr_bound2.c[3148,3161] [2023-08-03 19:35:51,327 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:35:51,334 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 19:35:51,334 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 19:35:51,340 INFO L206 MainTranslator]: Completed translation [2023-08-03 19:35:51,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:35:51 WrapperNode [2023-08-03 19:35:51,341 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 19:35:51,342 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 19:35:51,342 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 19:35:51,342 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 19:35:51,348 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:35:51" (1/1) ... [2023-08-03 19:35:51,365 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:35:51" (1/1) ... [2023-08-03 19:35:51,411 INFO L138 Inliner]: procedures = 22, calls = 35, calls flagged for inlining = 15, calls inlined = 29, statements flattened = 294 [2023-08-03 19:35:51,412 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 19:35:51,412 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 19:35:51,412 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 19:35:51,413 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 19:35:51,420 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:35:51" (1/1) ... [2023-08-03 19:35:51,421 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:35:51" (1/1) ... [2023-08-03 19:35:51,432 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:35:51" (1/1) ... [2023-08-03 19:35:51,432 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:35:51" (1/1) ... [2023-08-03 19:35:51,440 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:35:51" (1/1) ... [2023-08-03 19:35:51,444 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:35:51" (1/1) ... [2023-08-03 19:35:51,446 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:35:51" (1/1) ... [2023-08-03 19:35:51,448 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:35:51" (1/1) ... [2023-08-03 19:35:51,451 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 19:35:51,452 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 19:35:51,452 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 19:35:51,452 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 19:35:51,453 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:35:51" (1/1) ... [2023-08-03 19:35:51,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:35:51,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:35:51,495 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 19:35:51,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 19:35:51,530 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 19:35:51,530 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 19:35:51,530 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 19:35:51,530 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 19:35:51,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 19:35:51,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 19:35:51,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 19:35:51,530 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 19:35:51,532 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 19:35:51,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 19:35:51,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 19:35:51,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 19:35:51,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 19:35:51,535 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 19:35:51,517 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 19:35:51,657 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 19:35:51,660 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 19:35:52,075 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 19:35:52,533 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 19:35:52,533 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-03 19:35:52,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:35:52 BoogieIcfgContainer [2023-08-03 19:35:52,535 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 19:35:52,539 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 19:35:52,539 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 19:35:52,542 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 19:35:52,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 07:35:51" (1/3) ... [2023-08-03 19:35:52,543 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e7b68a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:35:52, skipping insertion in model container [2023-08-03 19:35:52,544 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:35:51" (2/3) ... [2023-08-03 19:35:52,544 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e7b68a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:35:52, skipping insertion in model container [2023-08-03 19:35:52,545 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:35:52" (3/3) ... [2023-08-03 19:35:52,547 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_chl-collitem-symm.wvr_bound2.c [2023-08-03 19:35:52,554 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 19:35:52,563 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 19:35:52,563 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 19:35:52,564 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 19:35:52,663 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-03 19:35:52,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 139 places, 145 transitions, 312 flow [2023-08-03 19:35:52,828 INFO L124 PetriNetUnfolderBase]: 34/314 cut-off events. [2023-08-03 19:35:52,828 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 19:35:52,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334 conditions, 314 events. 34/314 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 935 event pairs, 0 based on Foata normal form. 0/270 useless extension candidates. Maximal degree in co-relation 189. Up to 8 conditions per place. [2023-08-03 19:35:52,836 INFO L82 GeneralOperation]: Start removeDead. Operand has 139 places, 145 transitions, 312 flow [2023-08-03 19:35:52,844 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 137 transitions, 296 flow [2023-08-03 19:35:52,847 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:35:52,859 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 131 places, 137 transitions, 296 flow [2023-08-03 19:35:52,864 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 131 places, 137 transitions, 296 flow [2023-08-03 19:35:52,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 137 transitions, 296 flow [2023-08-03 19:35:52,927 INFO L124 PetriNetUnfolderBase]: 34/282 cut-off events. [2023-08-03 19:35:52,927 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 19:35:52,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 282 events. 34/282 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 766 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 173. Up to 8 conditions per place. [2023-08-03 19:35:52,932 INFO L119 LiptonReduction]: Number of co-enabled transitions 726 [2023-08-03 19:35:59,578 INFO L134 LiptonReduction]: Checked pairs total: 1796 [2023-08-03 19:35:59,579 INFO L136 LiptonReduction]: Total number of compositions: 124 [2023-08-03 19:35:59,590 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:35:59,595 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;@776e2437, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:35:59,595 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 19:35:59,599 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:35:59,599 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-08-03 19:35:59,599 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:35:59,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:35:59,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 19:35:59,600 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:35:59,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:35:59,605 INFO L85 PathProgramCache]: Analyzing trace with hash 955075723, now seen corresponding path program 1 times [2023-08-03 19:35:59,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:35:59,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606470559] [2023-08-03 19:35:59,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:35:59,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:35:59,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:35:59,787 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 19:35:59,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:35:59,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606470559] [2023-08-03 19:35:59,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606470559] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:35:59,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:35:59,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 19:35:59,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608607347] [2023-08-03 19:35:59,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:35:59,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:35:59,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:35:59,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:35:59,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:35:59,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 269 [2023-08-03 19:35:59,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 28 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:59,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:35:59,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 269 [2023-08-03 19:35:59,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:36:00,022 INFO L124 PetriNetUnfolderBase]: 69/182 cut-off events. [2023-08-03 19:36:00,023 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-03 19:36:00,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376 conditions, 182 events. 69/182 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 676 event pairs, 27 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 264. Up to 163 conditions per place. [2023-08-03 19:36:00,026 INFO L140 encePairwiseOnDemand]: 265/269 looper letters, 23 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2023-08-03 19:36:00,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 29 transitions, 130 flow [2023-08-03 19:36:00,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:36:00,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:36:00,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 402 transitions. [2023-08-03 19:36:00,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49814126394052044 [2023-08-03 19:36:00,050 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 402 transitions. [2023-08-03 19:36:00,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 402 transitions. [2023-08-03 19:36:00,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:36:00,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 402 transitions. [2023-08-03 19:36:00,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:00,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:00,066 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:00,068 INFO L175 Difference]: Start difference. First operand has 28 places, 28 transitions, 78 flow. Second operand 3 states and 402 transitions. [2023-08-03 19:36:00,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 29 transitions, 130 flow [2023-08-03 19:36:00,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 130 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:36:00,072 INFO L231 Difference]: Finished difference. Result has 31 places, 27 transitions, 84 flow [2023-08-03 19:36:00,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=31, PETRI_TRANSITIONS=27} [2023-08-03 19:36:00,079 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 3 predicate places. [2023-08-03 19:36:00,079 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 27 transitions, 84 flow [2023-08-03 19:36:00,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:00,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:36:00,080 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 19:36:00,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 19:36:00,081 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] === [2023-08-03 19:36:00,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:36:00,090 INFO L85 PathProgramCache]: Analyzing trace with hash -412095762, now seen corresponding path program 1 times [2023-08-03 19:36:00,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:36:00,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562195766] [2023-08-03 19:36:00,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:00,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:36:00,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:36:00,141 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 19:36:00,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:36:00,195 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 19:36:00,196 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 19:36:00,197 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 19:36:00,199 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 19:36:00,199 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 19:36:00,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 19:36:00,200 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 19:36:00,202 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 19:36:00,202 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 19:36:00,264 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-03 19:36:00,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 157 transitions, 362 flow [2023-08-03 19:36:00,391 INFO L124 PetriNetUnfolderBase]: 149/998 cut-off events. [2023-08-03 19:36:00,391 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-03 19:36:00,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1095 conditions, 998 events. 149/998 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5119 event pairs, 1 based on Foata normal form. 0/846 useless extension candidates. Maximal degree in co-relation 584. Up to 32 conditions per place. [2023-08-03 19:36:00,394 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 157 transitions, 362 flow [2023-08-03 19:36:00,397 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 149 transitions, 346 flow [2023-08-03 19:36:00,397 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:36:00,398 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 143 places, 149 transitions, 346 flow [2023-08-03 19:36:00,398 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 143 places, 149 transitions, 346 flow [2023-08-03 19:36:00,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 149 transitions, 346 flow [2023-08-03 19:36:00,492 INFO L124 PetriNetUnfolderBase]: 149/870 cut-off events. [2023-08-03 19:36:00,492 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-03 19:36:00,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 967 conditions, 870 events. 149/870 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4101 event pairs, 1 based on Foata normal form. 0/734 useless extension candidates. Maximal degree in co-relation 520. Up to 32 conditions per place. [2023-08-03 19:36:00,502 INFO L119 LiptonReduction]: Number of co-enabled transitions 1644 [2023-08-03 19:36:09,384 INFO L134 LiptonReduction]: Checked pairs total: 4295 [2023-08-03 19:36:09,385 INFO L136 LiptonReduction]: Total number of compositions: 126 [2023-08-03 19:36:09,387 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:36:09,388 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;@776e2437, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:36:09,388 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 19:36:09,390 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:36:09,391 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-08-03 19:36:09,391 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:36:09,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:36:09,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 19:36:09,391 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:36:09,392 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:36:09,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1234745709, now seen corresponding path program 1 times [2023-08-03 19:36:09,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:36:09,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14914779] [2023-08-03 19:36:09,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:09,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:36:09,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:09,462 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 19:36:09,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:36:09,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14914779] [2023-08-03 19:36:09,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14914779] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:36:09,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:36:09,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 19:36:09,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835585658] [2023-08-03 19:36:09,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:36:09,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:36:09,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:36:09,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:36:09,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:36:09,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 283 [2023-08-03 19:36:09,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 38 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:09,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:36:09,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 283 [2023-08-03 19:36:09,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:36:10,296 INFO L124 PetriNetUnfolderBase]: 1269/2259 cut-off events. [2023-08-03 19:36:10,296 INFO L125 PetriNetUnfolderBase]: For 352/352 co-relation queries the response was YES. [2023-08-03 19:36:10,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4671 conditions, 2259 events. 1269/2259 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 11635 event pairs, 803 based on Foata normal form. 0/2042 useless extension candidates. Maximal degree in co-relation 1797. Up to 2103 conditions per place. [2023-08-03 19:36:10,310 INFO L140 encePairwiseOnDemand]: 279/283 looper letters, 32 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2023-08-03 19:36:10,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 40 transitions, 196 flow [2023-08-03 19:36:10,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:36:10,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:36:10,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 423 transitions. [2023-08-03 19:36:10,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49823321554770317 [2023-08-03 19:36:10,312 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 423 transitions. [2023-08-03 19:36:10,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 423 transitions. [2023-08-03 19:36:10,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:36:10,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 423 transitions. [2023-08-03 19:36:10,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:10,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:10,318 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:10,319 INFO L175 Difference]: Start difference. First operand has 38 places, 38 transitions, 124 flow. Second operand 3 states and 423 transitions. [2023-08-03 19:36:10,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 40 transitions, 196 flow [2023-08-03 19:36:10,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 40 transitions, 196 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:36:10,324 INFO L231 Difference]: Finished difference. Result has 41 places, 38 transitions, 134 flow [2023-08-03 19:36:10,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=41, PETRI_TRANSITIONS=38} [2023-08-03 19:36:10,325 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 3 predicate places. [2023-08-03 19:36:10,325 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 38 transitions, 134 flow [2023-08-03 19:36:10,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:10,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:36:10,326 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 19:36:10,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 19:36:10,326 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] === [2023-08-03 19:36:10,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:36:10,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1120781646, now seen corresponding path program 1 times [2023-08-03 19:36:10,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:36:10,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38147342] [2023-08-03 19:36:10,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:10,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:36:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:10,453 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 19:36:10,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:36:10,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38147342] [2023-08-03 19:36:10,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38147342] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:36:10,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985510451] [2023-08-03 19:36:10,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:10,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:36:10,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:36:10,461 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 19:36:10,488 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 19:36:10,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:10,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:36:10,598 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:36:10,671 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 19:36:10,671 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:36:10,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985510451] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:36:10,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:36:10,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 19:36:10,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242500191] [2023-08-03 19:36:10,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:36:10,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:36:10,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:36:10,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:36:10,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:36:10,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 283 [2023-08-03 19:36:10,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 129.6) internal successors, (648), 5 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:10,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:36:10,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 283 [2023-08-03 19:36:10,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:36:11,502 INFO L124 PetriNetUnfolderBase]: 1265/2249 cut-off events. [2023-08-03 19:36:11,502 INFO L125 PetriNetUnfolderBase]: For 354/354 co-relation queries the response was YES. [2023-08-03 19:36:11,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4666 conditions, 2249 events. 1265/2249 cut-off events. For 354/354 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 11671 event pairs, 532 based on Foata normal form. 4/2042 useless extension candidates. Maximal degree in co-relation 2668. Up to 2082 conditions per place. [2023-08-03 19:36:11,515 INFO L140 encePairwiseOnDemand]: 279/283 looper letters, 33 selfloop transitions, 4 changer transitions 0/42 dead transitions. [2023-08-03 19:36:11,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 42 transitions, 214 flow [2023-08-03 19:36:11,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:36:11,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:36:11,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 678 transitions. [2023-08-03 19:36:11,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791519434628975 [2023-08-03 19:36:11,518 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 678 transitions. [2023-08-03 19:36:11,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 678 transitions. [2023-08-03 19:36:11,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:36:11,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 678 transitions. [2023-08-03 19:36:11,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 135.6) internal successors, (678), 5 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:11,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 283.0) internal successors, (1698), 6 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:11,523 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 283.0) internal successors, (1698), 6 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:11,523 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 134 flow. Second operand 5 states and 678 transitions. [2023-08-03 19:36:11,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 42 transitions, 214 flow [2023-08-03 19:36:11,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 42 transitions, 206 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:36:11,528 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 141 flow [2023-08-03 19:36:11,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=141, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2023-08-03 19:36:11,530 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 5 predicate places. [2023-08-03 19:36:11,530 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 141 flow [2023-08-03 19:36:11,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 129.6) internal successors, (648), 5 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:11,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:36:11,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:36:11,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 19:36:11,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:36:11,739 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:36:11,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:36:11,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1806637894, now seen corresponding path program 1 times [2023-08-03 19:36:11,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:36:11,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206900227] [2023-08-03 19:36:11,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:11,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:36:11,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:11,826 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 19:36:11,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:36:11,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206900227] [2023-08-03 19:36:11,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206900227] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:36:11,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325716809] [2023-08-03 19:36:11,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:11,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:36:11,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:36:11,846 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 19:36:11,847 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 19:36:11,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:11,968 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:36:11,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:36:11,974 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 19:36:11,975 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:36:11,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325716809] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:36:11,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:36:11,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 19:36:11,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429170155] [2023-08-03 19:36:11,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:36:11,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:36:11,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:36:11,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:36:11,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:36:11,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 283 [2023-08-03 19:36:11,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 141 flow. Second operand has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:11,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:36:11,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 283 [2023-08-03 19:36:11,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:36:12,740 INFO L124 PetriNetUnfolderBase]: 1259/2255 cut-off events. [2023-08-03 19:36:12,740 INFO L125 PetriNetUnfolderBase]: For 264/264 co-relation queries the response was YES. [2023-08-03 19:36:12,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4631 conditions, 2255 events. 1259/2255 cut-off events. For 264/264 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 11777 event pairs, 802 based on Foata normal form. 0/2050 useless extension candidates. Maximal degree in co-relation 1920. Up to 2049 conditions per place. [2023-08-03 19:36:12,750 INFO L140 encePairwiseOnDemand]: 280/283 looper letters, 35 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2023-08-03 19:36:12,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 43 transitions, 227 flow [2023-08-03 19:36:12,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:36:12,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:36:12,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 424 transitions. [2023-08-03 19:36:12,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4994110718492344 [2023-08-03 19:36:12,752 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 424 transitions. [2023-08-03 19:36:12,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 424 transitions. [2023-08-03 19:36:12,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:36:12,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 424 transitions. [2023-08-03 19:36:12,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:12,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:12,756 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:12,756 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 141 flow. Second operand 3 states and 424 transitions. [2023-08-03 19:36:12,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 43 transitions, 227 flow [2023-08-03 19:36:12,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 43 transitions, 220 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:36:12,758 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 149 flow [2023-08-03 19:36:12,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2023-08-03 19:36:12,759 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 6 predicate places. [2023-08-03 19:36:12,759 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 149 flow [2023-08-03 19:36:12,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:12,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:36:12,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:36:12,768 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 19:36:12,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:36:12,966 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:36:12,966 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:36:12,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1484285957, now seen corresponding path program 1 times [2023-08-03 19:36:12,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:36:12,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453658866] [2023-08-03 19:36:12,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:12,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:36:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:13,003 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 19:36:13,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:36:13,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453658866] [2023-08-03 19:36:13,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453658866] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:36:13,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312879747] [2023-08-03 19:36:13,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:13,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:36:13,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:36:13,005 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 19:36:13,009 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 19:36:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:13,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:36:13,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:36:13,123 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 19:36:13,123 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:36:13,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312879747] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:36:13,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:36:13,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 19:36:13,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993510215] [2023-08-03 19:36:13,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:36:13,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:36:13,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:36:13,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:36:13,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:36:13,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 283 [2023-08-03 19:36:13,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 149 flow. Second operand has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:13,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:36:13,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 283 [2023-08-03 19:36:13,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:36:13,751 INFO L124 PetriNetUnfolderBase]: 1105/2045 cut-off events. [2023-08-03 19:36:13,751 INFO L125 PetriNetUnfolderBase]: For 311/311 co-relation queries the response was YES. [2023-08-03 19:36:13,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4303 conditions, 2045 events. 1105/2045 cut-off events. For 311/311 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 10774 event pairs, 768 based on Foata normal form. 0/1908 useless extension candidates. Maximal degree in co-relation 1954. Up to 1569 conditions per place. [2023-08-03 19:36:13,761 INFO L140 encePairwiseOnDemand]: 280/283 looper letters, 42 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-08-03 19:36:13,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 49 transitions, 267 flow [2023-08-03 19:36:13,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:36:13,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:36:13,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 429 transitions. [2023-08-03 19:36:13,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5053003533568905 [2023-08-03 19:36:13,763 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 429 transitions. [2023-08-03 19:36:13,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 429 transitions. [2023-08-03 19:36:13,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:36:13,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 429 transitions. [2023-08-03 19:36:13,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:13,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:13,766 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:13,766 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 149 flow. Second operand 3 states and 429 transitions. [2023-08-03 19:36:13,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 49 transitions, 267 flow [2023-08-03 19:36:13,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 49 transitions, 264 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:36:13,769 INFO L231 Difference]: Finished difference. Result has 46 places, 40 transitions, 158 flow [2023-08-03 19:36:13,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2023-08-03 19:36:13,769 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 8 predicate places. [2023-08-03 19:36:13,770 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 158 flow [2023-08-03 19:36:13,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:13,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:36:13,770 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:36:13,776 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 19:36:13,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:36:13,976 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:36:13,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:36:13,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1673885776, now seen corresponding path program 1 times [2023-08-03 19:36:13,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:36:13,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832300786] [2023-08-03 19:36:13,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:13,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:36:13,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:14,012 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 19:36:14,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:36:14,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832300786] [2023-08-03 19:36:14,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832300786] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:36:14,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971870388] [2023-08-03 19:36:14,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:14,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:36:14,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:36:14,014 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 19:36:14,035 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 19:36:14,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:14,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:36:14,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:36:14,157 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:36:14,157 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:36:14,177 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 19:36:14,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971870388] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:36:14,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:36:14,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 19:36:14,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451827457] [2023-08-03 19:36:14,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:36:14,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:36:14,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:36:14,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:36:14,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:36:14,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 283 [2023-08-03 19:36:14,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 158 flow. Second operand has 5 states, 5 states have (on average 130.6) internal successors, (653), 5 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:14,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:36:14,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 283 [2023-08-03 19:36:14,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:36:14,787 INFO L124 PetriNetUnfolderBase]: 1003/1845 cut-off events. [2023-08-03 19:36:14,787 INFO L125 PetriNetUnfolderBase]: For 399/399 co-relation queries the response was YES. [2023-08-03 19:36:14,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4054 conditions, 1845 events. 1003/1845 cut-off events. For 399/399 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 9365 event pairs, 446 based on Foata normal form. 2/1777 useless extension candidates. Maximal degree in co-relation 1579. Up to 1697 conditions per place. [2023-08-03 19:36:14,796 INFO L140 encePairwiseOnDemand]: 280/283 looper letters, 35 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2023-08-03 19:36:14,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 43 transitions, 236 flow [2023-08-03 19:36:14,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:36:14,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:36:14,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 549 transitions. [2023-08-03 19:36:14,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48498233215547704 [2023-08-03 19:36:14,798 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 549 transitions. [2023-08-03 19:36:14,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 549 transitions. [2023-08-03 19:36:14,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:36:14,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 549 transitions. [2023-08-03 19:36:14,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.25) internal successors, (549), 4 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:14,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:14,802 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:14,803 INFO L175 Difference]: Start difference. First operand has 46 places, 40 transitions, 158 flow. Second operand 4 states and 549 transitions. [2023-08-03 19:36:14,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 43 transitions, 236 flow [2023-08-03 19:36:14,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 43 transitions, 234 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:36:14,805 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 154 flow [2023-08-03 19:36:14,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2023-08-03 19:36:14,806 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 10 predicate places. [2023-08-03 19:36:14,806 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 154 flow [2023-08-03 19:36:14,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 130.6) internal successors, (653), 5 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:14,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:36:14,807 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:36:14,815 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 19:36:15,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:36:15,016 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:36:15,016 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:36:15,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1975719805, now seen corresponding path program 1 times [2023-08-03 19:36:15,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:36:15,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578551135] [2023-08-03 19:36:15,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:15,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:36:15,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:15,081 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 19:36:15,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:36:15,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578551135] [2023-08-03 19:36:15,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578551135] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:36:15,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256199031] [2023-08-03 19:36:15,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:15,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:36:15,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:36:15,084 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 19:36:15,086 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 19:36:15,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:15,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:36:15,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:36:15,241 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 19:36:15,241 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:36:15,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256199031] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:36:15,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:36:15,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 19:36:15,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861103531] [2023-08-03 19:36:15,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:36:15,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:36:15,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:36:15,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:36:15,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:36:15,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 283 [2023-08-03 19:36:15,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 154 flow. Second operand has 5 states, 5 states have (on average 130.6) internal successors, (653), 5 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:15,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:36:15,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 283 [2023-08-03 19:36:15,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:36:15,726 INFO L124 PetriNetUnfolderBase]: 971/1789 cut-off events. [2023-08-03 19:36:15,726 INFO L125 PetriNetUnfolderBase]: For 307/307 co-relation queries the response was YES. [2023-08-03 19:36:15,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3897 conditions, 1789 events. 971/1789 cut-off events. For 307/307 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 9002 event pairs, 44 based on Foata normal form. 16/1735 useless extension candidates. Maximal degree in co-relation 2334. Up to 1528 conditions per place. [2023-08-03 19:36:15,735 INFO L140 encePairwiseOnDemand]: 279/283 looper letters, 41 selfloop transitions, 4 changer transitions 0/49 dead transitions. [2023-08-03 19:36:15,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 49 transitions, 264 flow [2023-08-03 19:36:15,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:36:15,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:36:15,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 684 transitions. [2023-08-03 19:36:15,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4833922261484099 [2023-08-03 19:36:15,738 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 684 transitions. [2023-08-03 19:36:15,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 684 transitions. [2023-08-03 19:36:15,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:36:15,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 684 transitions. [2023-08-03 19:36:15,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.8) internal successors, (684), 5 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:15,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 283.0) internal successors, (1698), 6 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:15,743 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 283.0) internal successors, (1698), 6 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:15,743 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 154 flow. Second operand 5 states and 684 transitions. [2023-08-03 19:36:15,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 49 transitions, 264 flow [2023-08-03 19:36:15,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 49 transitions, 252 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 19:36:15,745 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 159 flow [2023-08-03 19:36:15,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=159, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2023-08-03 19:36:15,746 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 10 predicate places. [2023-08-03 19:36:15,746 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 159 flow [2023-08-03 19:36:15,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 130.6) internal successors, (653), 5 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:15,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:36:15,747 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:36:15,753 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 19:36:15,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:36:15,953 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:36:15,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:36:15,953 INFO L85 PathProgramCache]: Analyzing trace with hash 777079228, now seen corresponding path program 1 times [2023-08-03 19:36:15,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:36:15,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219102790] [2023-08-03 19:36:15,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:15,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:36:15,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:16,009 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 19:36:16,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:36:16,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219102790] [2023-08-03 19:36:16,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219102790] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:36:16,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471214996] [2023-08-03 19:36:16,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:16,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:36:16,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:36:16,011 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 19:36:16,036 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 19:36:16,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:16,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:36:16,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:36:16,156 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 19:36:16,156 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:36:16,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471214996] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:36:16,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:36:16,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:36:16,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87458675] [2023-08-03 19:36:16,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:36:16,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:36:16,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:36:16,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:36:16,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:36:16,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 283 [2023-08-03 19:36:16,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 159 flow. Second operand has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:16,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:36:16,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 283 [2023-08-03 19:36:16,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:36:16,665 INFO L124 PetriNetUnfolderBase]: 882/1688 cut-off events. [2023-08-03 19:36:16,665 INFO L125 PetriNetUnfolderBase]: For 481/481 co-relation queries the response was YES. [2023-08-03 19:36:16,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3728 conditions, 1688 events. 882/1688 cut-off events. For 481/481 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 8568 event pairs, 612 based on Foata normal form. 0/1650 useless extension candidates. Maximal degree in co-relation 2295. Up to 1169 conditions per place. [2023-08-03 19:36:16,672 INFO L140 encePairwiseOnDemand]: 280/283 looper letters, 43 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-08-03 19:36:16,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 49 transitions, 277 flow [2023-08-03 19:36:16,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:36:16,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:36:16,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 429 transitions. [2023-08-03 19:36:16,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5053003533568905 [2023-08-03 19:36:16,674 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 429 transitions. [2023-08-03 19:36:16,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 429 transitions. [2023-08-03 19:36:16,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:36:16,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 429 transitions. [2023-08-03 19:36:16,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:16,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:16,677 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:16,677 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 159 flow. Second operand 3 states and 429 transitions. [2023-08-03 19:36:16,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 49 transitions, 277 flow [2023-08-03 19:36:16,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 49 transitions, 270 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:36:16,679 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 164 flow [2023-08-03 19:36:16,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2023-08-03 19:36:16,680 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 11 predicate places. [2023-08-03 19:36:16,680 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 164 flow [2023-08-03 19:36:16,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:16,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:36:16,680 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:36:16,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-03 19:36:16,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:36:16,886 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:36:16,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:36:16,886 INFO L85 PathProgramCache]: Analyzing trace with hash 15375559, now seen corresponding path program 1 times [2023-08-03 19:36:16,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:36:16,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463579870] [2023-08-03 19:36:16,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:16,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:36:16,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:16,955 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 19:36:16,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:36:16,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463579870] [2023-08-03 19:36:16,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463579870] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:36:16,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774979899] [2023-08-03 19:36:16,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:16,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:36:16,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:36:16,957 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 19:36:16,959 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 19:36:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:17,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:36:17,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:36:17,098 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 19:36:17,099 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:36:17,116 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 19:36:17,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774979899] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:36:17,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:36:17,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:36:17,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968498281] [2023-08-03 19:36:17,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:36:17,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:36:17,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:36:17,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:36:17,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:36:17,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 283 [2023-08-03 19:36:17,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 164 flow. Second operand has 5 states, 5 states have (on average 133.2) internal successors, (666), 5 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:17,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:36:17,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 283 [2023-08-03 19:36:17,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:36:17,597 INFO L124 PetriNetUnfolderBase]: 834/1600 cut-off events. [2023-08-03 19:36:17,597 INFO L125 PetriNetUnfolderBase]: For 408/408 co-relation queries the response was YES. [2023-08-03 19:36:17,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3666 conditions, 1600 events. 834/1600 cut-off events. For 408/408 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 7771 event pairs, 384 based on Foata normal form. 8/1603 useless extension candidates. Maximal degree in co-relation 2303. Up to 1367 conditions per place. [2023-08-03 19:36:17,605 INFO L140 encePairwiseOnDemand]: 280/283 looper letters, 40 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2023-08-03 19:36:17,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 47 transitions, 260 flow [2023-08-03 19:36:17,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:36:17,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:36:17,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 553 transitions. [2023-08-03 19:36:17,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48851590106007065 [2023-08-03 19:36:17,608 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 553 transitions. [2023-08-03 19:36:17,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 553 transitions. [2023-08-03 19:36:17,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:36:17,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 553 transitions. [2023-08-03 19:36:17,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 138.25) internal successors, (553), 4 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:17,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:17,611 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:17,611 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 164 flow. Second operand 4 states and 553 transitions. [2023-08-03 19:36:17,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 47 transitions, 260 flow [2023-08-03 19:36:17,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 47 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:36:17,617 INFO L231 Difference]: Finished difference. Result has 51 places, 39 transitions, 160 flow [2023-08-03 19:36:17,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2023-08-03 19:36:17,617 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 13 predicate places. [2023-08-03 19:36:17,617 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 160 flow [2023-08-03 19:36:17,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 133.2) internal successors, (666), 5 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:17,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:36:17,618 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] [2023-08-03 19:36:17,628 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 19:36:17,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:36:17,824 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:36:17,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:36:17,824 INFO L85 PathProgramCache]: Analyzing trace with hash -193966501, now seen corresponding path program 1 times [2023-08-03 19:36:17,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:36:17,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933123212] [2023-08-03 19:36:17,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:17,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:36:17,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:17,916 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 19:36:17,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:36:17,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933123212] [2023-08-03 19:36:17,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933123212] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:36:17,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635668112] [2023-08-03 19:36:17,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:17,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:36:17,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:36:17,918 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 19:36:17,921 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 19:36:18,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:18,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:36:18,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:36:18,087 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 19:36:18,087 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:36:18,101 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 19:36:18,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635668112] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:36:18,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:36:18,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:36:18,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149783635] [2023-08-03 19:36:18,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:36:18,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:36:18,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:36:18,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:36:18,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:36:18,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 283 [2023-08-03 19:36:18,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 160 flow. Second operand has 5 states, 5 states have (on average 133.4) internal successors, (667), 5 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:18,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:36:18,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 283 [2023-08-03 19:36:18,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:36:18,463 INFO L124 PetriNetUnfolderBase]: 542/1060 cut-off events. [2023-08-03 19:36:18,463 INFO L125 PetriNetUnfolderBase]: For 399/399 co-relation queries the response was YES. [2023-08-03 19:36:18,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2457 conditions, 1060 events. 542/1060 cut-off events. For 399/399 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4453 event pairs, 223 based on Foata normal form. 32/1087 useless extension candidates. Maximal degree in co-relation 1885. Up to 470 conditions per place. [2023-08-03 19:36:18,467 INFO L140 encePairwiseOnDemand]: 279/283 looper letters, 45 selfloop transitions, 4 changer transitions 0/53 dead transitions. [2023-08-03 19:36:18,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 53 transitions, 294 flow [2023-08-03 19:36:18,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:36:18,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:36:18,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 559 transitions. [2023-08-03 19:36:18,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49381625441696114 [2023-08-03 19:36:18,469 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 559 transitions. [2023-08-03 19:36:18,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 559 transitions. [2023-08-03 19:36:18,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:36:18,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 559 transitions. [2023-08-03 19:36:18,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:18,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:18,473 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:18,473 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 160 flow. Second operand 4 states and 559 transitions. [2023-08-03 19:36:18,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 53 transitions, 294 flow [2023-08-03 19:36:18,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 53 transitions, 288 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:36:18,476 INFO L231 Difference]: Finished difference. Result has 53 places, 40 transitions, 174 flow [2023-08-03 19:36:18,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=53, PETRI_TRANSITIONS=40} [2023-08-03 19:36:18,477 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 15 predicate places. [2023-08-03 19:36:18,477 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 40 transitions, 174 flow [2023-08-03 19:36:18,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 133.4) internal successors, (667), 5 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:18,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:36:18,477 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] [2023-08-03 19:36:18,485 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 19:36:18,685 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,SelfDestructingSolverStorable10 [2023-08-03 19:36:18,685 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:36:18,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:36:18,685 INFO L85 PathProgramCache]: Analyzing trace with hash -784709001, now seen corresponding path program 1 times [2023-08-03 19:36:18,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:36:18,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487921143] [2023-08-03 19:36:18,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:18,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:36:18,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:18,791 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-03 19:36:18,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:36:18,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487921143] [2023-08-03 19:36:18,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487921143] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:36:18,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565342167] [2023-08-03 19:36:18,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:18,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:36:18,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:36:18,793 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 19:36:18,795 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 19:36:18,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:18,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:36:18,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:36:18,970 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-03 19:36:18,970 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:36:18,983 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-03 19:36:18,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565342167] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:36:18,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:36:18,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:36:18,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748736684] [2023-08-03 19:36:18,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:36:18,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:36:18,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:36:18,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:36:18,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:36:18,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 283 [2023-08-03 19:36:18,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 40 transitions, 174 flow. Second operand has 5 states, 5 states have (on average 133.8) internal successors, (669), 5 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:18,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:36:18,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 283 [2023-08-03 19:36:18,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:36:19,318 INFO L124 PetriNetUnfolderBase]: 530/1025 cut-off events. [2023-08-03 19:36:19,318 INFO L125 PetriNetUnfolderBase]: For 688/688 co-relation queries the response was YES. [2023-08-03 19:36:19,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2629 conditions, 1025 events. 530/1025 cut-off events. For 688/688 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4243 event pairs, 439 based on Foata normal form. 9/1029 useless extension candidates. Maximal degree in co-relation 2101. Up to 751 conditions per place. [2023-08-03 19:36:19,322 INFO L140 encePairwiseOnDemand]: 279/283 looper letters, 45 selfloop transitions, 3 changer transitions 2/54 dead transitions. [2023-08-03 19:36:19,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 54 transitions, 310 flow [2023-08-03 19:36:19,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:36:19,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:36:19,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 559 transitions. [2023-08-03 19:36:19,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49381625441696114 [2023-08-03 19:36:19,325 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 559 transitions. [2023-08-03 19:36:19,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 559 transitions. [2023-08-03 19:36:19,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:36:19,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 559 transitions. [2023-08-03 19:36:19,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:19,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:19,328 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:19,328 INFO L175 Difference]: Start difference. First operand has 53 places, 40 transitions, 174 flow. Second operand 4 states and 559 transitions. [2023-08-03 19:36:19,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 54 transitions, 310 flow [2023-08-03 19:36:19,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 54 transitions, 306 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 19:36:19,332 INFO L231 Difference]: Finished difference. Result has 57 places, 39 transitions, 178 flow [2023-08-03 19:36:19,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=57, PETRI_TRANSITIONS=39} [2023-08-03 19:36:19,332 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 19 predicate places. [2023-08-03 19:36:19,333 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 39 transitions, 178 flow [2023-08-03 19:36:19,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 133.8) internal successors, (669), 5 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:19,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:36:19,333 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] [2023-08-03 19:36:19,338 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 19:36:19,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:36:19,539 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:36:19,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:36:19,539 INFO L85 PathProgramCache]: Analyzing trace with hash 990084489, now seen corresponding path program 1 times [2023-08-03 19:36:19,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:36:19,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292017833] [2023-08-03 19:36:19,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:19,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:36:19,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:22,649 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 19:36:22,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:36:22,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292017833] [2023-08-03 19:36:22,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292017833] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:36:22,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238066830] [2023-08-03 19:36:22,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:22,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:36:22,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:36:22,651 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 19:36:22,658 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 19:36:22,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:22,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-03 19:36:22,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:36:25,639 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:36:25,639 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:36:28,910 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 19:36:28,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238066830] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:36:28,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:36:28,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 13 [2023-08-03 19:36:28,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335090132] [2023-08-03 19:36:28,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:36:28,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-03 19:36:28,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:36:28,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-03 19:36:28,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-08-03 19:36:29,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 283 [2023-08-03 19:36:29,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 39 transitions, 178 flow. Second operand has 14 states, 14 states have (on average 106.0) internal successors, (1484), 14 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:29,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:36:29,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 283 [2023-08-03 19:36:29,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:36:29,958 INFO L124 PetriNetUnfolderBase]: 725/1379 cut-off events. [2023-08-03 19:36:29,958 INFO L125 PetriNetUnfolderBase]: For 1174/1174 co-relation queries the response was YES. [2023-08-03 19:36:29,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3658 conditions, 1379 events. 725/1379 cut-off events. For 1174/1174 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 6894 event pairs, 67 based on Foata normal form. 1/1366 useless extension candidates. Maximal degree in co-relation 3578. Up to 670 conditions per place. [2023-08-03 19:36:29,962 INFO L140 encePairwiseOnDemand]: 276/283 looper letters, 44 selfloop transitions, 2 changer transitions 37/87 dead transitions. [2023-08-03 19:36:29,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 87 transitions, 581 flow [2023-08-03 19:36:29,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 19:36:29,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 19:36:29,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 680 transitions. [2023-08-03 19:36:29,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4004711425206125 [2023-08-03 19:36:29,964 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 680 transitions. [2023-08-03 19:36:29,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 680 transitions. [2023-08-03 19:36:29,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:36:29,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 680 transitions. [2023-08-03 19:36:29,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 113.33333333333333) internal successors, (680), 6 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:29,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 283.0) internal successors, (1981), 7 states have internal predecessors, (1981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:29,969 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 283.0) internal successors, (1981), 7 states have internal predecessors, (1981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:29,969 INFO L175 Difference]: Start difference. First operand has 57 places, 39 transitions, 178 flow. Second operand 6 states and 680 transitions. [2023-08-03 19:36:29,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 87 transitions, 581 flow [2023-08-03 19:36:29,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 87 transitions, 561 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-03 19:36:29,975 INFO L231 Difference]: Finished difference. Result has 64 places, 41 transitions, 196 flow [2023-08-03 19:36:29,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=196, PETRI_PLACES=64, PETRI_TRANSITIONS=41} [2023-08-03 19:36:29,975 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 26 predicate places. [2023-08-03 19:36:29,975 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 41 transitions, 196 flow [2023-08-03 19:36:29,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 106.0) internal successors, (1484), 14 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:29,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:36:29,976 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] [2023-08-03 19:36:29,985 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 19:36:30,182 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,SelfDestructingSolverStorable12 [2023-08-03 19:36:30,182 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:36:30,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:36:30,182 INFO L85 PathProgramCache]: Analyzing trace with hash -950560585, now seen corresponding path program 1 times [2023-08-03 19:36:30,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:36:30,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435520417] [2023-08-03 19:36:30,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:30,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:36:30,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:31,049 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-03 19:36:31,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:36:31,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435520417] [2023-08-03 19:36:31,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435520417] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:36:31,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351980914] [2023-08-03 19:36:31,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:31,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:36:31,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:36:31,052 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 19:36:31,074 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 19:36:31,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:31,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-03 19:36:31,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:36:33,453 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 19:36:33,453 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:36:35,651 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-03 19:36:35,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351980914] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:36:35,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:36:35,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 5] total 21 [2023-08-03 19:36:35,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451862627] [2023-08-03 19:36:35,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:36:35,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-03 19:36:35,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:36:35,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-03 19:36:35,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2023-08-03 19:36:36,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 283 [2023-08-03 19:36:36,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 41 transitions, 196 flow. Second operand has 21 states, 21 states have (on average 88.0952380952381) internal successors, (1850), 21 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:36,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:36:36,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 283 [2023-08-03 19:36:36,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:36:38,176 INFO L124 PetriNetUnfolderBase]: 287/690 cut-off events. [2023-08-03 19:36:38,176 INFO L125 PetriNetUnfolderBase]: For 778/778 co-relation queries the response was YES. [2023-08-03 19:36:38,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2219 conditions, 690 events. 287/690 cut-off events. For 778/778 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3161 event pairs, 30 based on Foata normal form. 7/693 useless extension candidates. Maximal degree in co-relation 2200. Up to 325 conditions per place. [2023-08-03 19:36:38,178 INFO L140 encePairwiseOnDemand]: 263/283 looper letters, 0 selfloop transitions, 0 changer transitions 120/120 dead transitions. [2023-08-03 19:36:38,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 120 transitions, 825 flow [2023-08-03 19:36:38,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-03 19:36:38,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-03 19:36:38,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2121 transitions. [2023-08-03 19:36:38,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3122791519434629 [2023-08-03 19:36:38,184 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2121 transitions. [2023-08-03 19:36:38,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2121 transitions. [2023-08-03 19:36:38,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:36:38,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2121 transitions. [2023-08-03 19:36:38,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 88.375) internal successors, (2121), 24 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:38,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 283.0) internal successors, (7075), 25 states have internal predecessors, (7075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:38,198 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 283.0) internal successors, (7075), 25 states have internal predecessors, (7075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:38,198 INFO L175 Difference]: Start difference. First operand has 64 places, 41 transitions, 196 flow. Second operand 24 states and 2121 transitions. [2023-08-03 19:36:38,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 120 transitions, 825 flow [2023-08-03 19:36:38,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 120 transitions, 797 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-03 19:36:38,202 INFO L231 Difference]: Finished difference. Result has 80 places, 0 transitions, 0 flow [2023-08-03 19:36:38,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=0, PETRI_PLACES=80, PETRI_TRANSITIONS=0} [2023-08-03 19:36:38,202 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 42 predicate places. [2023-08-03 19:36:38,202 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 0 transitions, 0 flow [2023-08-03 19:36:38,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 88.0952380952381) internal successors, (1850), 21 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:38,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-03 19:36:38,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-03 19:36:38,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 19:36:38,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-03 19:36:38,409 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,SelfDestructingSolverStorable13 [2023-08-03 19:36:38,410 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:36:38,411 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 19:36:38,411 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 19:36:38,414 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 07:36:38 BasicIcfg [2023-08-03 19:36:38,414 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 19:36:38,414 INFO L158 Benchmark]: Toolchain (without parser) took 47324.38ms. Allocated memory was 346.0MB in the beginning and 1.3GB in the end (delta: 992.0MB). Free memory was 298.4MB in the beginning and 842.3MB in the end (delta: -543.9MB). Peak memory consumption was 450.0MB. Max. memory is 16.0GB. [2023-08-03 19:36:38,415 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 346.0MB. Free memory is still 300.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 19:36:38,415 INFO L158 Benchmark]: CACSL2BoogieTranslator took 249.74ms. Allocated memory is still 346.0MB. Free memory was 298.3MB in the beginning and 286.3MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-03 19:36:38,415 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.33ms. Allocated memory is still 346.0MB. Free memory was 286.3MB in the beginning and 283.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 19:36:38,415 INFO L158 Benchmark]: Boogie Preprocessor took 38.82ms. Allocated memory is still 346.0MB. Free memory was 283.8MB in the beginning and 281.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 19:36:38,415 INFO L158 Benchmark]: RCFGBuilder took 1083.38ms. Allocated memory was 346.0MB in the beginning and 528.5MB in the end (delta: 182.5MB). Free memory was 281.7MB in the beginning and 416.6MB in the end (delta: -134.9MB). Peak memory consumption was 49.4MB. Max. memory is 16.0GB. [2023-08-03 19:36:38,416 INFO L158 Benchmark]: TraceAbstraction took 45875.10ms. Allocated memory was 528.5MB in the beginning and 1.3GB in the end (delta: 809.5MB). Free memory was 415.8MB in the beginning and 842.3MB in the end (delta: -426.5MB). Peak memory consumption was 381.7MB. Max. memory is 16.0GB. [2023-08-03 19:36:38,418 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 346.0MB. Free memory is still 300.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 249.74ms. Allocated memory is still 346.0MB. Free memory was 298.3MB in the beginning and 286.3MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 70.33ms. Allocated memory is still 346.0MB. Free memory was 286.3MB in the beginning and 283.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 38.82ms. Allocated memory is still 346.0MB. Free memory was 283.8MB in the beginning and 281.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 1083.38ms. Allocated memory was 346.0MB in the beginning and 528.5MB in the end (delta: 182.5MB). Free memory was 281.7MB in the beginning and 416.6MB in the end (delta: -134.9MB). Peak memory consumption was 49.4MB. Max. memory is 16.0GB. * TraceAbstraction took 45875.10ms. Allocated memory was 528.5MB in the beginning and 1.3GB in the end (delta: 809.5MB). Free memory was 415.8MB in the beginning and 842.3MB in the end (delta: -426.5MB). Peak memory consumption was 381.7MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.7s, 131 PlacesBefore, 28 PlacesAfterwards, 137 TransitionsBefore, 28 TransitionsAfterwards, 726 CoEnabledTransitionPairs, 8 FixpointIterations, 61 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 19 ConcurrentYvCompositions, 6 ChoiceCompositions, 124 TotalNumberOfCompositions, 1796 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1204, independent: 1143, independent conditional: 0, independent unconditional: 1143, dependent: 61, dependent conditional: 0, dependent unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 423, independent: 410, independent conditional: 0, independent unconditional: 410, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1204, independent: 733, independent conditional: 0, independent unconditional: 733, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 423, unknown conditional: 0, unknown unconditional: 423] , Statistics on independence cache: Total cache size (in pairs): 27, Positive cache size: 23, Positive conditional cache size: 0, Positive unconditional cache size: 23, 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 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.0s, 143 PlacesBefore, 38 PlacesAfterwards, 149 TransitionsBefore, 38 TransitionsAfterwards, 1644 CoEnabledTransitionPairs, 7 FixpointIterations, 61 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 20 ConcurrentYvCompositions, 6 ChoiceCompositions, 126 TotalNumberOfCompositions, 4295 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2800, independent: 2719, independent conditional: 0, independent unconditional: 2719, dependent: 81, dependent conditional: 0, dependent unconditional: 81, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 910, independent: 890, independent conditional: 0, independent unconditional: 890, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2800, independent: 1829, independent conditional: 0, independent unconditional: 1829, dependent: 61, dependent conditional: 0, dependent unconditional: 61, unknown: 910, unknown conditional: 0, unknown unconditional: 910] , Statistics on independence cache: Total cache size (in pairs): 72, Positive cache size: 66, Positive conditional cache size: 0, Positive unconditional cache size: 66, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 87]: 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 5 procedures, 143 locations, 3 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: 7.5s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 52 IncrementalHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 1 mSDtfsCounter, 52 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=1, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 7 procedures, 151 locations, 3 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: 38.1s, OverallIterations: 12, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 9.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1054 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 933 mSDsluCounter, 2037 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2018 mSDsCounter, 84 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3354 IncrementalHoareTripleChecker+Invalid, 3438 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 84 mSolverCounterUnsat, 19 mSDtfsCounter, 3354 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 545 GetRequests, 456 SyntacticMatches, 10 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=196occurred in iteration=11, InterpolantAutomatonStates: 68, 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: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 14.6s InterpolantComputationTime, 571 NumberOfCodeBlocks, 571 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 744 ConstructedInterpolants, 0 QuantifiedInterpolants, 8928 SizeOfPredicates, 74 NumberOfNonLiveVariables, 1699 ConjunctsInSsa, 71 ConjunctsInUnsatCore, 29 InterpolantComputations, 6 PerfectInterpolantSequences, 303/348 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 19:36:38,447 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...