/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 INSUFFICIENT_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/weaver_bench-exp2x4.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 01:48:19,462 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 01:48:19,537 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 01:48:19,543 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 01:48:19,543 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 01:48:19,544 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 01:48:19,544 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 01:48:19,570 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 01:48:19,570 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 01:48:19,574 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 01:48:19,574 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 01:48:19,574 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 01:48:19,575 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 01:48:19,576 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 01:48:19,576 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 01:48:19,577 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 01:48:19,577 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 01:48:19,577 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 01:48:19,577 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 01:48:19,577 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 01:48:19,578 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 01:48:19,578 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 01:48:19,578 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 01:48:19,578 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 01:48:19,579 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 01:48:19,579 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 01:48:19,579 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 01:48:19,579 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 01:48:19,580 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 01:48:19,580 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 01:48:19,581 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 01:48:19,581 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 01:48:19,581 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 01:48:19,581 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 01:48:19,581 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 01:48:19,581 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 01:48:19,582 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 01:48:19,582 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 01:48:19,582 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 01:48:19,582 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 01:48:19,582 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 01:48:19,582 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-04 01:48:19,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 01:48:19,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 01:48:19,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 01:48:19,836 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 01:48:19,836 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 01:48:19,837 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_bench-exp2x4.wvr_bound2.c [2023-08-04 01:48:20,952 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 01:48:21,138 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 01:48:21,138 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_bench-exp2x4.wvr_bound2.c [2023-08-04 01:48:21,146 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8899a080/9767ee575d9c4950b9b95f7a1ee9dfa9/FLAG34cb85f73 [2023-08-04 01:48:21,165 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8899a080/9767ee575d9c4950b9b95f7a1ee9dfa9 [2023-08-04 01:48:21,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 01:48:21,171 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 01:48:21,174 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 01:48:21,174 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 01:48:21,177 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 01:48:21,178 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 01:48:21" (1/1) ... [2023-08-04 01:48:21,178 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a677228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:48:21, skipping insertion in model container [2023-08-04 01:48:21,179 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 01:48:21" (1/1) ... [2023-08-04 01:48:21,203 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 01:48:21,375 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_bench-exp2x4.wvr_bound2.c[2633,2646] [2023-08-04 01:48:21,376 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 01:48:21,384 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 01:48:21,405 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_bench-exp2x4.wvr_bound2.c[2633,2646] [2023-08-04 01:48:21,406 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 01:48:21,416 INFO L206 MainTranslator]: Completed translation [2023-08-04 01:48:21,417 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:48:21 WrapperNode [2023-08-04 01:48:21,417 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 01:48:21,418 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 01:48:21,418 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 01:48:21,418 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 01:48:21,426 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:48:21" (1/1) ... [2023-08-04 01:48:21,438 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:48:21" (1/1) ... [2023-08-04 01:48:21,457 INFO L138 Inliner]: procedures = 20, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 160 [2023-08-04 01:48:21,457 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 01:48:21,458 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 01:48:21,458 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 01:48:21,458 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 01:48:21,466 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:48:21" (1/1) ... [2023-08-04 01:48:21,466 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:48:21" (1/1) ... [2023-08-04 01:48:21,468 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:48:21" (1/1) ... [2023-08-04 01:48:21,469 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:48:21" (1/1) ... [2023-08-04 01:48:21,475 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:48:21" (1/1) ... [2023-08-04 01:48:21,479 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:48:21" (1/1) ... [2023-08-04 01:48:21,481 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:48:21" (1/1) ... [2023-08-04 01:48:21,482 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:48:21" (1/1) ... [2023-08-04 01:48:21,484 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 01:48:21,485 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 01:48:21,485 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 01:48:21,485 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 01:48:21,485 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:48:21" (1/1) ... [2023-08-04 01:48:21,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 01:48:21,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:48:21,509 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) [2023-08-04 01:48:21,511 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 [2023-08-04 01:48:21,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 01:48:21,535 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-04 01:48:21,536 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-04 01:48:21,536 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-04 01:48:21,536 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-04 01:48:21,536 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-04 01:48:21,536 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-04 01:48:21,536 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-04 01:48:21,536 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-04 01:48:21,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 01:48:21,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 01:48:21,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 01:48:21,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 01:48:21,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 01:48:21,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 01:48:21,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 01:48:21,540 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 01:48:21,614 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 01:48:21,616 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 01:48:21,886 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 01:48:21,894 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 01:48:21,894 INFO L302 CfgBuilder]: Removed 12 assume(true) statements. [2023-08-04 01:48:21,896 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 01:48:21 BoogieIcfgContainer [2023-08-04 01:48:21,896 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 01:48:21,898 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 01:48:21,898 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 01:48:21,900 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 01:48:21,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 01:48:21" (1/3) ... [2023-08-04 01:48:21,901 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26095a49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 01:48:21, skipping insertion in model container [2023-08-04 01:48:21,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:48:21" (2/3) ... [2023-08-04 01:48:21,901 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26095a49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 01:48:21, skipping insertion in model container [2023-08-04 01:48:21,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 01:48:21" (3/3) ... [2023-08-04 01:48:21,903 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_bench-exp2x4.wvr_bound2.c [2023-08-04 01:48:21,909 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 01:48:21,917 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 01:48:21,917 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 01:48:21,918 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 01:48:22,026 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-08-04 01:48:22,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 195 transitions, 458 flow [2023-08-04 01:48:22,338 INFO L124 PetriNetUnfolderBase]: 269/1452 cut-off events. [2023-08-04 01:48:22,338 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2023-08-04 01:48:22,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1630 conditions, 1452 events. 269/1452 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 9671 event pairs, 0 based on Foata normal form. 0/1201 useless extension candidates. Maximal degree in co-relation 805. Up to 33 conditions per place. [2023-08-04 01:48:22,353 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 195 transitions, 458 flow [2023-08-04 01:48:22,367 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 195 transitions, 458 flow [2023-08-04 01:48:22,370 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 01:48:22,380 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 170 places, 195 transitions, 458 flow [2023-08-04 01:48:22,386 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 170 places, 195 transitions, 458 flow [2023-08-04 01:48:22,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 195 transitions, 458 flow [2023-08-04 01:48:22,536 INFO L124 PetriNetUnfolderBase]: 269/1452 cut-off events. [2023-08-04 01:48:22,536 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2023-08-04 01:48:22,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1630 conditions, 1452 events. 269/1452 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 9671 event pairs, 0 based on Foata normal form. 0/1201 useless extension candidates. Maximal degree in co-relation 805. Up to 33 conditions per place. [2023-08-04 01:48:22,564 INFO L119 LiptonReduction]: Number of co-enabled transitions 6244 [2023-08-04 01:48:26,180 INFO L134 LiptonReduction]: Checked pairs total: 16931 [2023-08-04 01:48:26,180 INFO L136 LiptonReduction]: Total number of compositions: 149 [2023-08-04 01:48:26,192 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 01:48:26,197 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;@67e866ab, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 01:48:26,197 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 01:48:26,202 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 01:48:26,202 INFO L124 PetriNetUnfolderBase]: 3/33 cut-off events. [2023-08-04 01:48:26,202 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 01:48:26,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:48:26,203 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 01:48:26,203 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:48:26,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:48:26,207 INFO L85 PathProgramCache]: Analyzing trace with hash -754791672, now seen corresponding path program 1 times [2023-08-04 01:48:26,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:48:26,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456153883] [2023-08-04 01:48:26,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:48:26,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:48:26,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 01:48:26,315 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 01:48:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 01:48:26,355 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 01:48:26,357 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 01:48:26,358 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 01:48:26,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 01:48:26,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 01:48:26,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 01:48:26,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 01:48:26,360 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 01:48:26,362 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (1/2) [2023-08-04 01:48:26,363 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 01:48:26,363 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 01:48:26,399 INFO L144 ThreadInstanceAdder]: Constructed 32 joinOtherThreadTransitions. [2023-08-04 01:48:26,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 243 transitions, 630 flow [2023-08-04 01:48:28,958 INFO L124 PetriNetUnfolderBase]: 5482/20120 cut-off events. [2023-08-04 01:48:28,958 INFO L125 PetriNetUnfolderBase]: For 4176/4176 co-relation queries the response was YES. [2023-08-04 01:48:29,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24505 conditions, 20120 events. 5482/20120 cut-off events. For 4176/4176 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 211067 event pairs, 162 based on Foata normal form. 0/17159 useless extension candidates. Maximal degree in co-relation 12103. Up to 1024 conditions per place. [2023-08-04 01:48:29,089 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 243 transitions, 630 flow [2023-08-04 01:48:29,179 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 243 transitions, 630 flow [2023-08-04 01:48:29,180 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 01:48:29,180 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 202 places, 243 transitions, 630 flow [2023-08-04 01:48:29,180 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 202 places, 243 transitions, 630 flow [2023-08-04 01:48:29,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 243 transitions, 630 flow [2023-08-04 01:48:31,146 INFO L124 PetriNetUnfolderBase]: 5482/20120 cut-off events. [2023-08-04 01:48:31,147 INFO L125 PetriNetUnfolderBase]: For 4176/4176 co-relation queries the response was YES. [2023-08-04 01:48:31,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24505 conditions, 20120 events. 5482/20120 cut-off events. For 4176/4176 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 211067 event pairs, 162 based on Foata normal form. 0/17159 useless extension candidates. Maximal degree in co-relation 12103. Up to 1024 conditions per place. [2023-08-04 01:48:31,564 INFO L119 LiptonReduction]: Number of co-enabled transitions 16072 [2023-08-04 01:48:35,352 INFO L134 LiptonReduction]: Checked pairs total: 77946 [2023-08-04 01:48:35,353 INFO L136 LiptonReduction]: Total number of compositions: 159 [2023-08-04 01:48:35,355 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 01:48:35,356 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;@67e866ab, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 01:48:35,357 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 01:48:35,365 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 01:48:35,366 INFO L124 PetriNetUnfolderBase]: 16/154 cut-off events. [2023-08-04 01:48:35,366 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-04 01:48:35,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:48:35,366 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-04 01:48:35,366 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:48:35,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:48:35,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1670290548, now seen corresponding path program 1 times [2023-08-04 01:48:35,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:48:35,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927974988] [2023-08-04 01:48:35,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:48:35,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:48:35,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:48:35,543 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 01:48:35,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:48:35,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927974988] [2023-08-04 01:48:35,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927974988] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:48:35,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798320963] [2023-08-04 01:48:35,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:48:35,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:48:35,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:48:35,549 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) [2023-08-04 01:48:35,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 01:48:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:48:35,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 01:48:35,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:48:35,800 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 01:48:35,800 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:48:35,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798320963] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:48:35,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:48:35,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-04 01:48:35,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625876835] [2023-08-04 01:48:35,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:48:35,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:48:35,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:48:35,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:48:35,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 01:48:35,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 402 [2023-08-04 01:48:35,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 110 transitions, 364 flow. Second operand has 5 states, 5 states have (on average 180.6) internal successors, (903), 5 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:48:35,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:48:35,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 402 [2023-08-04 01:48:35,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:49:07,851 INFO L124 PetriNetUnfolderBase]: 310924/431239 cut-off events. [2023-08-04 01:49:07,851 INFO L125 PetriNetUnfolderBase]: For 100962/100962 co-relation queries the response was YES. [2023-08-04 01:49:10,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 908018 conditions, 431239 events. 310924/431239 cut-off events. For 100962/100962 co-relation queries the response was YES. Maximal size of possible extension queue 6309. Compared 3127996 event pairs, 184474 based on Foata normal form. 0/402128 useless extension candidates. Maximal degree in co-relation 372768. Up to 402421 conditions per place. [2023-08-04 01:49:12,844 INFO L140 encePairwiseOnDemand]: 397/402 looper letters, 75 selfloop transitions, 5 changer transitions 0/115 dead transitions. [2023-08-04 01:49:12,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 115 transitions, 530 flow [2023-08-04 01:49:12,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 01:49:12,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 01:49:12,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 977 transitions. [2023-08-04 01:49:12,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4860696517412935 [2023-08-04 01:49:12,859 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 977 transitions. [2023-08-04 01:49:12,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 977 transitions. [2023-08-04 01:49:12,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:49:12,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 977 transitions. [2023-08-04 01:49:12,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 195.4) internal successors, (977), 5 states have internal predecessors, (977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:49:12,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 402.0) internal successors, (2412), 6 states have internal predecessors, (2412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:49:12,878 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 402.0) internal successors, (2412), 6 states have internal predecessors, (2412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:49:12,879 INFO L175 Difference]: Start difference. First operand has 87 places, 110 transitions, 364 flow. Second operand 5 states and 977 transitions. [2023-08-04 01:49:12,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 115 transitions, 530 flow [2023-08-04 01:49:12,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 115 transitions, 520 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 01:49:12,967 INFO L231 Difference]: Finished difference. Result has 88 places, 111 transitions, 369 flow [2023-08-04 01:49:12,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=369, PETRI_PLACES=88, PETRI_TRANSITIONS=111} [2023-08-04 01:49:12,972 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 1 predicate places. [2023-08-04 01:49:12,972 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 111 transitions, 369 flow [2023-08-04 01:49:12,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 180.6) internal successors, (903), 5 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:49:12,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:49:12,973 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2023-08-04 01:49:12,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 01:49:13,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:49:13,182 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:49:13,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:49:13,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1028286252, now seen corresponding path program 1 times [2023-08-04 01:49:13,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:49:13,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364316050] [2023-08-04 01:49:13,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:49:13,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:49:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:49:13,279 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 01:49:13,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:49:13,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364316050] [2023-08-04 01:49:13,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364316050] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:49:13,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 01:49:13,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 01:49:13,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813371965] [2023-08-04 01:49:13,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:49:13,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:49:13,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:49:13,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:49:13,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 01:49:13,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 402 [2023-08-04 01:49:13,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 111 transitions, 369 flow. Second operand has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:49:13,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:49:13,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 402 [2023-08-04 01:49:13,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:49:42,565 INFO L124 PetriNetUnfolderBase]: 308290/425076 cut-off events. [2023-08-04 01:49:42,565 INFO L125 PetriNetUnfolderBase]: For 96244/96244 co-relation queries the response was YES. [2023-08-04 01:49:45,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 888835 conditions, 425076 events. 308290/425076 cut-off events. For 96244/96244 co-relation queries the response was YES. Maximal size of possible extension queue 6505. Compared 3046896 event pairs, 212877 based on Foata normal form. 1/395784 useless extension candidates. Maximal degree in co-relation 274814. Up to 398767 conditions per place. [2023-08-04 01:49:48,056 INFO L140 encePairwiseOnDemand]: 399/402 looper letters, 75 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2023-08-04 01:49:48,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 112 transitions, 524 flow [2023-08-04 01:49:48,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:49:48,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:49:48,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 617 transitions. [2023-08-04 01:49:48,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.511608623548922 [2023-08-04 01:49:48,072 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 617 transitions. [2023-08-04 01:49:48,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 617 transitions. [2023-08-04 01:49:48,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:49:48,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 617 transitions. [2023-08-04 01:49:48,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:49:48,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:49:48,080 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:49:48,080 INFO L175 Difference]: Start difference. First operand has 88 places, 111 transitions, 369 flow. Second operand 3 states and 617 transitions. [2023-08-04 01:49:48,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 112 transitions, 524 flow [2023-08-04 01:49:48,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 112 transitions, 523 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 01:49:48,214 INFO L231 Difference]: Finished difference. Result has 89 places, 110 transitions, 367 flow [2023-08-04 01:49:48,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=367, PETRI_PLACES=89, PETRI_TRANSITIONS=110} [2023-08-04 01:49:48,215 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 2 predicate places. [2023-08-04 01:49:48,215 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 110 transitions, 367 flow [2023-08-04 01:49:48,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:49:48,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:49:48,220 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:49:48,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 01:49:48,222 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:49:48,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:49:48,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1876183727, now seen corresponding path program 1 times [2023-08-04 01:49:48,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:49:48,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24192596] [2023-08-04 01:49:48,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:49:48,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:49:48,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:49:48,361 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 01:49:48,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:49:48,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24192596] [2023-08-04 01:49:48,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24192596] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:49:48,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920668116] [2023-08-04 01:49:48,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:49:48,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:49:48,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:49:48,364 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) [2023-08-04 01:49:48,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 01:49:48,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:49:48,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 01:49:48,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:49:48,505 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 01:49:48,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 01:49:48,524 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 01:49:48,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920668116] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 01:49:48,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 01:49:48,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 01:49:48,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116738431] [2023-08-04 01:49:48,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 01:49:48,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:49:48,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:49:48,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:49:48,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:49:48,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 402 [2023-08-04 01:49:48,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 110 transitions, 367 flow. Second operand has 5 states, 5 states have (on average 181.6) internal successors, (908), 5 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:49:48,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:49:48,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 402 [2023-08-04 01:49:48,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:50:21,454 INFO L124 PetriNetUnfolderBase]: 302014/415318 cut-off events. [2023-08-04 01:50:21,455 INFO L125 PetriNetUnfolderBase]: For 90650/90650 co-relation queries the response was YES. [2023-08-04 01:50:24,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 869588 conditions, 415318 events. 302014/415318 cut-off events. For 90650/90650 co-relation queries the response was YES. Maximal size of possible extension queue 6247. Compared 2954381 event pairs, 179809 based on Foata normal form. 2/386609 useless extension candidates. Maximal degree in co-relation 542943. Up to 390281 conditions per place. [2023-08-04 01:50:26,118 INFO L140 encePairwiseOnDemand]: 399/402 looper letters, 75 selfloop transitions, 3 changer transitions 0/113 dead transitions. [2023-08-04 01:50:26,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 113 transitions, 528 flow [2023-08-04 01:50:26,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 01:50:26,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 01:50:26,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 795 transitions. [2023-08-04 01:50:26,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4944029850746269 [2023-08-04 01:50:26,121 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 795 transitions. [2023-08-04 01:50:26,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 795 transitions. [2023-08-04 01:50:26,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:50:26,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 795 transitions. [2023-08-04 01:50:26,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 198.75) internal successors, (795), 4 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:50:26,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 402.0) internal successors, (2010), 5 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:50:26,127 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 402.0) internal successors, (2010), 5 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:50:26,127 INFO L175 Difference]: Start difference. First operand has 89 places, 110 transitions, 367 flow. Second operand 4 states and 795 transitions. [2023-08-04 01:50:26,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 113 transitions, 528 flow [2023-08-04 01:50:26,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 113 transitions, 524 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 01:50:26,203 INFO L231 Difference]: Finished difference. Result has 90 places, 109 transitions, 364 flow [2023-08-04 01:50:26,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=364, PETRI_PLACES=90, PETRI_TRANSITIONS=109} [2023-08-04 01:50:26,204 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 3 predicate places. [2023-08-04 01:50:26,205 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 109 transitions, 364 flow [2023-08-04 01:50:26,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 181.6) internal successors, (908), 5 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:50:26,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:50:26,205 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:50:26,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 01:50:26,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-04 01:50:26,410 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:50:26,411 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:50:26,411 INFO L85 PathProgramCache]: Analyzing trace with hash 169762985, now seen corresponding path program 1 times [2023-08-04 01:50:26,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:50:26,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678123308] [2023-08-04 01:50:26,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:50:26,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:50:26,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:50:26,497 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 01:50:26,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:50:26,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678123308] [2023-08-04 01:50:26,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678123308] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:50:26,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495583453] [2023-08-04 01:50:26,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:50:26,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:50:26,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:50:26,500 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) [2023-08-04 01:50:26,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 01:50:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:50:26,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 01:50:26,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:50:26,606 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 01:50:26,606 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:50:26,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495583453] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:50:26,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:50:26,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-04 01:50:26,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679796020] [2023-08-04 01:50:26,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:50:26,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:50:26,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:50:26,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:50:26,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 01:50:26,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 402 [2023-08-04 01:50:26,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 109 transitions, 364 flow. Second operand has 5 states, 5 states have (on average 181.6) internal successors, (908), 5 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:50:26,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:50:26,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 402 [2023-08-04 01:50:26,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:50:56,378 INFO L124 PetriNetUnfolderBase]: 302050/415850 cut-off events. [2023-08-04 01:50:56,378 INFO L125 PetriNetUnfolderBase]: For 87190/87190 co-relation queries the response was YES. [2023-08-04 01:50:59,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 870092 conditions, 415850 events. 302050/415850 cut-off events. For 87190/87190 co-relation queries the response was YES. Maximal size of possible extension queue 6208. Compared 2972638 event pairs, 120731 based on Foata normal form. 0/387297 useless extension candidates. Maximal degree in co-relation 543275. Up to 390112 conditions per place. [2023-08-04 01:51:01,134 INFO L140 encePairwiseOnDemand]: 398/402 looper letters, 82 selfloop transitions, 5 changer transitions 0/121 dead transitions. [2023-08-04 01:51:01,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 121 transitions, 558 flow [2023-08-04 01:51:01,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 01:51:01,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 01:51:01,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 982 transitions. [2023-08-04 01:51:01,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48855721393034823 [2023-08-04 01:51:01,137 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 982 transitions. [2023-08-04 01:51:01,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 982 transitions. [2023-08-04 01:51:01,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:51:01,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 982 transitions. [2023-08-04 01:51:01,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 196.4) internal successors, (982), 5 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:51:01,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 402.0) internal successors, (2412), 6 states have internal predecessors, (2412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:51:01,146 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 402.0) internal successors, (2412), 6 states have internal predecessors, (2412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:51:01,146 INFO L175 Difference]: Start difference. First operand has 90 places, 109 transitions, 364 flow. Second operand 5 states and 982 transitions. [2023-08-04 01:51:01,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 121 transitions, 558 flow [2023-08-04 01:51:01,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 121 transitions, 542 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-04 01:51:01,221 INFO L231 Difference]: Finished difference. Result has 89 places, 111 transitions, 365 flow [2023-08-04 01:51:01,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=365, PETRI_PLACES=89, PETRI_TRANSITIONS=111} [2023-08-04 01:51:01,223 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 2 predicate places. [2023-08-04 01:51:01,223 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 111 transitions, 365 flow [2023-08-04 01:51:01,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 181.6) internal successors, (908), 5 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:51:01,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:51:01,224 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:51:01,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 01:51:01,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:51:01,429 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:51:01,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:51:01,429 INFO L85 PathProgramCache]: Analyzing trace with hash 241163518, now seen corresponding path program 1 times [2023-08-04 01:51:01,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:51:01,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619052782] [2023-08-04 01:51:01,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:51:01,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:51:01,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:51:01,472 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-04 01:51:01,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:51:01,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619052782] [2023-08-04 01:51:01,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619052782] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:51:01,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 01:51:01,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 01:51:01,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837152905] [2023-08-04 01:51:01,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:51:01,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:51:01,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:51:01,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:51:01,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 01:51:01,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 402 [2023-08-04 01:51:01,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 111 transitions, 365 flow. Second operand has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:51:01,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:51:01,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 402 [2023-08-04 01:51:01,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:51:30,254 INFO L124 PetriNetUnfolderBase]: 300342/411546 cut-off events. [2023-08-04 01:51:30,258 INFO L125 PetriNetUnfolderBase]: For 81982/81982 co-relation queries the response was YES. [2023-08-04 01:51:32,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 854445 conditions, 411546 events. 300342/411546 cut-off events. For 81982/81982 co-relation queries the response was YES. Maximal size of possible extension queue 6675. Compared 2906694 event pairs, 209413 based on Foata normal form. 4/382797 useless extension candidates. Maximal degree in co-relation 331751. Up to 387957 conditions per place. [2023-08-04 01:51:34,640 INFO L140 encePairwiseOnDemand]: 399/402 looper letters, 78 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2023-08-04 01:51:34,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 114 transitions, 530 flow [2023-08-04 01:51:34,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:51:34,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:51:34,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 619 transitions. [2023-08-04 01:51:34,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5132669983416253 [2023-08-04 01:51:34,642 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 619 transitions. [2023-08-04 01:51:34,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 619 transitions. [2023-08-04 01:51:34,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:51:34,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 619 transitions. [2023-08-04 01:51:34,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:51:34,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:51:34,647 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:51:34,647 INFO L175 Difference]: Start difference. First operand has 89 places, 111 transitions, 365 flow. Second operand 3 states and 619 transitions. [2023-08-04 01:51:34,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 114 transitions, 530 flow [2023-08-04 01:51:34,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 114 transitions, 529 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 01:51:34,727 INFO L231 Difference]: Finished difference. Result has 90 places, 110 transitions, 363 flow [2023-08-04 01:51:34,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=363, PETRI_PLACES=90, PETRI_TRANSITIONS=110} [2023-08-04 01:51:34,728 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 3 predicate places. [2023-08-04 01:51:34,728 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 110 transitions, 363 flow [2023-08-04 01:51:34,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:51:34,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:51:34,729 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:51:34,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 01:51:34,729 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:51:34,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:51:34,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1774588358, now seen corresponding path program 1 times [2023-08-04 01:51:34,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:51:34,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494421076] [2023-08-04 01:51:34,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:51:34,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:51:34,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:51:34,772 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-04 01:51:34,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:51:34,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494421076] [2023-08-04 01:51:34,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494421076] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:51:34,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198777990] [2023-08-04 01:51:34,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:51:34,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:51:34,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:51:34,775 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) [2023-08-04 01:51:34,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-04 01:51:34,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:51:34,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 01:51:34,868 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:51:34,885 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-04 01:51:34,885 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 01:51:34,904 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-04 01:51:34,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198777990] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 01:51:34,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 01:51:34,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 01:51:34,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067729267] [2023-08-04 01:51:34,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 01:51:34,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:51:34,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:51:34,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:51:34,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:51:34,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 402 [2023-08-04 01:51:34,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 110 transitions, 363 flow. Second operand has 5 states, 5 states have (on average 182.6) internal successors, (913), 5 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:51:34,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:51:34,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 402 [2023-08-04 01:51:34,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:52:03,431 INFO L124 PetriNetUnfolderBase]: 296286/404962 cut-off events. [2023-08-04 01:52:03,431 INFO L125 PetriNetUnfolderBase]: For 81286/81286 co-relation queries the response was YES. [2023-08-04 01:52:06,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 841937 conditions, 404962 events. 296286/404962 cut-off events. For 81286/81286 co-relation queries the response was YES. Maximal size of possible extension queue 6507. Compared 2836259 event pairs, 179121 based on Foata normal form. 8/376513 useless extension candidates. Maximal degree in co-relation 329263. Up to 382717 conditions per place. [2023-08-04 01:52:07,900 INFO L140 encePairwiseOnDemand]: 399/402 looper letters, 80 selfloop transitions, 3 changer transitions 0/117 dead transitions. [2023-08-04 01:52:07,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 117 transitions, 542 flow [2023-08-04 01:52:07,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 01:52:07,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 01:52:07,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 799 transitions. [2023-08-04 01:52:07,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4968905472636816 [2023-08-04 01:52:07,902 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 799 transitions. [2023-08-04 01:52:07,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 799 transitions. [2023-08-04 01:52:07,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:52:07,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 799 transitions. [2023-08-04 01:52:07,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 199.75) internal successors, (799), 4 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:52:07,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 402.0) internal successors, (2010), 5 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:52:07,907 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 402.0) internal successors, (2010), 5 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:52:07,907 INFO L175 Difference]: Start difference. First operand has 90 places, 110 transitions, 363 flow. Second operand 4 states and 799 transitions. [2023-08-04 01:52:07,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 117 transitions, 542 flow [2023-08-04 01:52:08,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 117 transitions, 538 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 01:52:08,020 INFO L231 Difference]: Finished difference. Result has 91 places, 109 transitions, 360 flow [2023-08-04 01:52:08,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=360, PETRI_PLACES=91, PETRI_TRANSITIONS=109} [2023-08-04 01:52:08,021 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 4 predicate places. [2023-08-04 01:52:08,021 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 109 transitions, 360 flow [2023-08-04 01:52:08,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 182.6) internal successors, (913), 5 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:52:08,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:52:08,022 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:52:08,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-04 01:52:08,222 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 [2023-08-04 01:52:08,223 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:52:08,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:52:08,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1976486677, now seen corresponding path program 1 times [2023-08-04 01:52:08,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:52:08,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982821392] [2023-08-04 01:52:08,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:52:08,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:52:08,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:52:08,292 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 01:52:08,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:52:08,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982821392] [2023-08-04 01:52:08,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982821392] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:52:08,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271044512] [2023-08-04 01:52:08,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:52:08,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:52:08,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:52:08,295 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) [2023-08-04 01:52:08,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-04 01:52:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:52:08,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 01:52:08,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:52:08,399 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 01:52:08,400 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:52:08,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271044512] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:52:08,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:52:08,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-04 01:52:08,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477979447] [2023-08-04 01:52:08,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:52:08,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:52:08,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:52:08,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:52:08,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 01:52:08,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 402 [2023-08-04 01:52:08,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 109 transitions, 360 flow. Second operand has 5 states, 5 states have (on average 182.6) internal successors, (913), 5 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:52:08,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:52:08,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 402 [2023-08-04 01:52:08,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:52:35,476 INFO L124 PetriNetUnfolderBase]: 296126/405972 cut-off events. [2023-08-04 01:52:35,477 INFO L125 PetriNetUnfolderBase]: For 74430/74430 co-relation queries the response was YES. [2023-08-04 01:52:38,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 842643 conditions, 405972 events. 296126/405972 cut-off events. For 74430/74430 co-relation queries the response was YES. Maximal size of possible extension queue 6501. Compared 2878326 event pairs, 63173 based on Foata normal form. 0/377969 useless extension candidates. Maximal degree in co-relation 329755. Up to 381748 conditions per place. [2023-08-04 01:52:39,849 INFO L140 encePairwiseOnDemand]: 398/402 looper letters, 89 selfloop transitions, 5 changer transitions 0/127 dead transitions. [2023-08-04 01:52:39,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 127 transitions, 580 flow [2023-08-04 01:52:39,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 01:52:39,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 01:52:39,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 988 transitions. [2023-08-04 01:52:39,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49154228855721394 [2023-08-04 01:52:39,852 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 988 transitions. [2023-08-04 01:52:39,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 988 transitions. [2023-08-04 01:52:39,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:52:39,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 988 transitions. [2023-08-04 01:52:39,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 197.6) internal successors, (988), 5 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:52:39,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 402.0) internal successors, (2412), 6 states have internal predecessors, (2412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:52:39,857 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 402.0) internal successors, (2412), 6 states have internal predecessors, (2412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:52:39,857 INFO L175 Difference]: Start difference. First operand has 91 places, 109 transitions, 360 flow. Second operand 5 states and 988 transitions. [2023-08-04 01:52:39,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 127 transitions, 580 flow [2023-08-04 01:52:39,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 127 transitions, 564 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-04 01:52:39,914 INFO L231 Difference]: Finished difference. Result has 90 places, 111 transitions, 361 flow [2023-08-04 01:52:39,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=361, PETRI_PLACES=90, PETRI_TRANSITIONS=111} [2023-08-04 01:52:39,914 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 3 predicate places. [2023-08-04 01:52:39,914 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 111 transitions, 361 flow [2023-08-04 01:52:39,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 182.6) internal successors, (913), 5 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:52:39,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:52:39,915 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:52:39,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-04 01:52:40,115 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 [2023-08-04 01:52:40,116 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:52:40,116 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:52:40,116 INFO L85 PathProgramCache]: Analyzing trace with hash -456760169, now seen corresponding path program 1 times [2023-08-04 01:52:40,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:52:40,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499487893] [2023-08-04 01:52:40,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:52:40,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:52:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:52:40,156 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-04 01:52:40,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:52:40,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499487893] [2023-08-04 01:52:40,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499487893] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:52:40,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 01:52:40,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 01:52:40,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696044919] [2023-08-04 01:52:40,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:52:40,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:52:40,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:52:40,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:52:40,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 01:52:40,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 402 [2023-08-04 01:52:40,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 111 transitions, 361 flow. Second operand has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:52:40,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:52:40,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 402 [2023-08-04 01:52:40,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:53:08,550 INFO L124 PetriNetUnfolderBase]: 295134/403060 cut-off events. [2023-08-04 01:53:08,550 INFO L125 PetriNetUnfolderBase]: For 68838/68838 co-relation queries the response was YES. [2023-08-04 01:53:11,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 829723 conditions, 403060 events. 295134/403060 cut-off events. For 68838/68838 co-relation queries the response was YES. Maximal size of possible extension queue 6880. Compared 2819370 event pairs, 208089 based on Foata normal form. 16/374877 useless extension candidates. Maximal degree in co-relation 324733. Up to 381117 conditions per place. [2023-08-04 01:53:12,724 INFO L140 encePairwiseOnDemand]: 399/402 looper letters, 81 selfloop transitions, 2 changer transitions 0/116 dead transitions. [2023-08-04 01:53:12,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 116 transitions, 536 flow [2023-08-04 01:53:12,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:53:12,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:53:12,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 621 transitions. [2023-08-04 01:53:12,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5149253731343284 [2023-08-04 01:53:12,726 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 621 transitions. [2023-08-04 01:53:12,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 621 transitions. [2023-08-04 01:53:12,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:53:12,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 621 transitions. [2023-08-04 01:53:12,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:53:12,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:53:12,729 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:53:12,729 INFO L175 Difference]: Start difference. First operand has 90 places, 111 transitions, 361 flow. Second operand 3 states and 621 transitions. [2023-08-04 01:53:12,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 116 transitions, 536 flow [2023-08-04 01:53:12,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 116 transitions, 535 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 01:53:12,779 INFO L231 Difference]: Finished difference. Result has 91 places, 110 transitions, 359 flow [2023-08-04 01:53:12,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=359, PETRI_PLACES=91, PETRI_TRANSITIONS=110} [2023-08-04 01:53:12,779 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 4 predicate places. [2023-08-04 01:53:12,780 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 110 transitions, 359 flow [2023-08-04 01:53:12,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:53:12,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:53:12,780 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:53:12,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-04 01:53:12,780 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:53:12,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:53:12,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1651192897, now seen corresponding path program 1 times [2023-08-04 01:53:12,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:53:12,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201581301] [2023-08-04 01:53:12,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:53:12,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:53:12,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:53:12,831 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-04 01:53:12,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:53:12,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201581301] [2023-08-04 01:53:12,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201581301] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:53:12,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340551408] [2023-08-04 01:53:12,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:53:12,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:53:12,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:53:12,833 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) [2023-08-04 01:53:12,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-04 01:53:12,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:53:12,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 01:53:12,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:53:12,941 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-04 01:53:12,941 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 01:53:12,955 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-04 01:53:12,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340551408] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 01:53:12,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 01:53:12,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 01:53:12,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189829288] [2023-08-04 01:53:12,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 01:53:12,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:53:12,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:53:12,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:53:12,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:53:12,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 402 [2023-08-04 01:53:12,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 110 transitions, 359 flow. Second operand has 5 states, 5 states have (on average 183.6) internal successors, (918), 5 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:53:12,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:53:12,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 402 [2023-08-04 01:53:12,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:53:40,346 INFO L124 PetriNetUnfolderBase]: 292830/399508 cut-off events. [2023-08-04 01:53:40,346 INFO L125 PetriNetUnfolderBase]: For 68422/68422 co-relation queries the response was YES. [2023-08-04 01:53:43,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 822955 conditions, 399508 events. 292830/399508 cut-off events. For 68422/68422 co-relation queries the response was YES. Maximal size of possible extension queue 6619. Compared 2783093 event pairs, 179541 based on Foata normal form. 32/371501 useless extension candidates. Maximal degree in co-relation 323361. Up to 377821 conditions per place. [2023-08-04 01:53:44,826 INFO L140 encePairwiseOnDemand]: 399/402 looper letters, 85 selfloop transitions, 3 changer transitions 0/121 dead transitions. [2023-08-04 01:53:44,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 121 transitions, 556 flow [2023-08-04 01:53:44,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 01:53:44,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 01:53:44,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 803 transitions. [2023-08-04 01:53:44,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4993781094527363 [2023-08-04 01:53:44,829 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 803 transitions. [2023-08-04 01:53:44,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 803 transitions. [2023-08-04 01:53:44,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:53:44,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 803 transitions. [2023-08-04 01:53:44,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 200.75) internal successors, (803), 4 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:53:44,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 402.0) internal successors, (2010), 5 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:53:44,833 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 402.0) internal successors, (2010), 5 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:53:44,833 INFO L175 Difference]: Start difference. First operand has 91 places, 110 transitions, 359 flow. Second operand 4 states and 803 transitions. [2023-08-04 01:53:44,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 121 transitions, 556 flow [2023-08-04 01:53:44,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 121 transitions, 552 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 01:53:44,892 INFO L231 Difference]: Finished difference. Result has 92 places, 109 transitions, 356 flow [2023-08-04 01:53:44,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=356, PETRI_PLACES=92, PETRI_TRANSITIONS=109} [2023-08-04 01:53:44,893 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 5 predicate places. [2023-08-04 01:53:44,893 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 109 transitions, 356 flow [2023-08-04 01:53:44,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 183.6) internal successors, (918), 5 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:53:44,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:53:44,894 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:53:44,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-04 01:53:45,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:53:45,099 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:53:45,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:53:45,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1102452598, now seen corresponding path program 1 times [2023-08-04 01:53:45,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:53:45,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802717681] [2023-08-04 01:53:45,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:53:45,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:53:45,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:53:45,171 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-04 01:53:45,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:53:45,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802717681] [2023-08-04 01:53:45,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802717681] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:53:45,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779859767] [2023-08-04 01:53:45,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:53:45,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:53:45,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:53:45,174 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) [2023-08-04 01:53:45,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-04 01:53:45,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:53:45,274 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 01:53:45,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:53:45,296 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-04 01:53:45,297 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:53:45,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779859767] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:53:45,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:53:45,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-04 01:53:45,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695492803] [2023-08-04 01:53:45,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:53:45,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:53:45,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:53:45,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:53:45,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 01:53:45,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 402 [2023-08-04 01:53:45,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 109 transitions, 356 flow. Second operand has 5 states, 5 states have (on average 183.6) internal successors, (918), 5 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:53:45,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:53:45,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 402 [2023-08-04 01:53:45,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:54:12,224 INFO L124 PetriNetUnfolderBase]: 291806/403420 cut-off events. [2023-08-04 01:54:12,225 INFO L125 PetriNetUnfolderBase]: For 44518/44518 co-relation queries the response was YES. [2023-08-04 01:54:14,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 825395 conditions, 403420 events. 291806/403420 cut-off events. For 44518/44518 co-relation queries the response was YES. Maximal size of possible extension queue 6614. Compared 2921883 event pairs, 9211 based on Foata normal form. 0/376967 useless extension candidates. Maximal degree in co-relation 325233. Up to 372772 conditions per place. [2023-08-04 01:54:14,705 INFO L140 encePairwiseOnDemand]: 398/402 looper letters, 0 selfloop transitions, 0 changer transitions 133/133 dead transitions. [2023-08-04 01:54:14,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 133 transitions, 602 flow [2023-08-04 01:54:14,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 01:54:14,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 01:54:14,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 994 transitions. [2023-08-04 01:54:14,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945273631840796 [2023-08-04 01:54:14,708 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 994 transitions. [2023-08-04 01:54:14,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 994 transitions. [2023-08-04 01:54:14,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:54:14,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 994 transitions. [2023-08-04 01:54:14,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 198.8) internal successors, (994), 5 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:54:14,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 402.0) internal successors, (2412), 6 states have internal predecessors, (2412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:54:14,713 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 402.0) internal successors, (2412), 6 states have internal predecessors, (2412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:54:14,713 INFO L175 Difference]: Start difference. First operand has 92 places, 109 transitions, 356 flow. Second operand 5 states and 994 transitions. [2023-08-04 01:54:14,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 133 transitions, 602 flow [2023-08-04 01:54:14,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 133 transitions, 586 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-04 01:54:14,760 INFO L231 Difference]: Finished difference. Result has 90 places, 0 transitions, 0 flow [2023-08-04 01:54:14,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=90, PETRI_TRANSITIONS=0} [2023-08-04 01:54:14,760 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 3 predicate places. [2023-08-04 01:54:14,760 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 0 transitions, 0 flow [2023-08-04 01:54:14,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 183.6) internal successors, (918), 5 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:54:14,761 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 01:54:14,761 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 01:54:14,761 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 01:54:14,761 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 01:54:14,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-04 01:54:14,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:54:14,962 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:54:14,962 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-04 01:54:14,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 243 transitions, 630 flow [2023-08-04 01:54:16,458 INFO L124 PetriNetUnfolderBase]: 5482/20120 cut-off events. [2023-08-04 01:54:16,458 INFO L125 PetriNetUnfolderBase]: For 4176/4176 co-relation queries the response was YES. [2023-08-04 01:54:16,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24505 conditions, 20120 events. 5482/20120 cut-off events. For 4176/4176 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 211067 event pairs, 162 based on Foata normal form. 0/17159 useless extension candidates. Maximal degree in co-relation 12103. Up to 1024 conditions per place. [2023-08-04 01:54:16,596 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 243 transitions, 630 flow [2023-08-04 01:54:16,979 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 243 transitions, 630 flow [2023-08-04 01:54:16,979 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 01:54:16,979 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 202 places, 243 transitions, 630 flow [2023-08-04 01:54:16,979 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 202 places, 243 transitions, 630 flow [2023-08-04 01:54:16,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 243 transitions, 630 flow [2023-08-04 01:54:18,535 INFO L124 PetriNetUnfolderBase]: 5482/20120 cut-off events. [2023-08-04 01:54:18,535 INFO L125 PetriNetUnfolderBase]: For 4176/4176 co-relation queries the response was YES. [2023-08-04 01:54:18,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24505 conditions, 20120 events. 5482/20120 cut-off events. For 4176/4176 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 211067 event pairs, 162 based on Foata normal form. 0/17159 useless extension candidates. Maximal degree in co-relation 12103. Up to 1024 conditions per place. [2023-08-04 01:54:18,833 INFO L119 LiptonReduction]: Number of co-enabled transitions 16072 [2023-08-04 01:54:22,109 INFO L134 LiptonReduction]: Checked pairs total: 78288 [2023-08-04 01:54:22,109 INFO L136 LiptonReduction]: Total number of compositions: 156 [2023-08-04 01:54:22,110 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 01:54:22,110 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;@67e866ab, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 01:54:22,110 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 01:54:22,113 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 01:54:22,113 INFO L124 PetriNetUnfolderBase]: 4/62 cut-off events. [2023-08-04 01:54:22,113 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-04 01:54:22,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:54:22,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:54:22,113 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:54:22,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:54:22,113 INFO L85 PathProgramCache]: Analyzing trace with hash 379877553, now seen corresponding path program 1 times [2023-08-04 01:54:22,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:54:22,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429972728] [2023-08-04 01:54:22,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:54:22,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:54:22,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:54:22,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 01:54:22,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:54:22,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429972728] [2023-08-04 01:54:22,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429972728] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:54:22,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 01:54:22,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 01:54:22,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346940206] [2023-08-04 01:54:22,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:54:22,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:54:22,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:54:22,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:54:22,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 01:54:22,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 399 [2023-08-04 01:54:22,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 110 transitions, 364 flow. Second operand has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 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) [2023-08-04 01:54:22,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:54:22,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 399 [2023-08-04 01:54:22,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:54:50,150 INFO L124 PetriNetUnfolderBase]: 308292/425078 cut-off events. [2023-08-04 01:54:50,151 INFO L125 PetriNetUnfolderBase]: For 107486/107486 co-relation queries the response was YES. [2023-08-04 01:54:52,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 897582 conditions, 425078 events. 308292/425078 cut-off events. For 107486/107486 co-relation queries the response was YES. Maximal size of possible extension queue 6511. Compared 3047263 event pairs, 212879 based on Foata normal form. 0/395777 useless extension candidates. Maximal degree in co-relation 371446. Up to 398775 conditions per place. [2023-08-04 01:54:54,711 INFO L140 encePairwiseOnDemand]: 395/399 looper letters, 74 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2023-08-04 01:54:54,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 112 transitions, 520 flow [2023-08-04 01:54:54,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:54:54,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:54:54,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 618 transitions. [2023-08-04 01:54:54,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5162907268170426 [2023-08-04 01:54:54,714 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 618 transitions. [2023-08-04 01:54:54,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 618 transitions. [2023-08-04 01:54:54,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:54:54,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 618 transitions. [2023-08-04 01:54:54,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:54:54,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:54:54,717 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:54:54,717 INFO L175 Difference]: Start difference. First operand has 87 places, 110 transitions, 364 flow. Second operand 3 states and 618 transitions. [2023-08-04 01:54:54,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 112 transitions, 520 flow [2023-08-04 01:54:54,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 112 transitions, 520 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 01:54:54,787 INFO L231 Difference]: Finished difference. Result has 89 places, 110 transitions, 374 flow [2023-08-04 01:54:54,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=374, PETRI_PLACES=89, PETRI_TRANSITIONS=110} [2023-08-04 01:54:54,787 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 2 predicate places. [2023-08-04 01:54:54,788 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 110 transitions, 374 flow [2023-08-04 01:54:54,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 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) [2023-08-04 01:54:54,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:54:54,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:54:54,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-04 01:54:54,788 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:54:54,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:54:54,789 INFO L85 PathProgramCache]: Analyzing trace with hash 930327748, now seen corresponding path program 1 times [2023-08-04 01:54:54,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:54:54,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081353741] [2023-08-04 01:54:54,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:54:54,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:54:54,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:54:54,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 01:54:54,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:54:54,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081353741] [2023-08-04 01:54:54,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081353741] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:54:54,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207184752] [2023-08-04 01:54:54,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:54:54,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:54:54,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:54:54,827 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) [2023-08-04 01:54:54,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-04 01:54:55,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:54:55,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 01:54:55,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:54:55,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 01:54:55,263 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:54:55,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207184752] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:54:55,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:54:55,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 01:54:55,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145011017] [2023-08-04 01:54:55,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:54:55,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:54:55,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:54:55,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:54:55,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:54:55,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 399 [2023-08-04 01:54:55,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 110 transitions, 374 flow. Second operand has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:54:55,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:54:55,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 399 [2023-08-04 01:54:55,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:55:25,508 INFO L124 PetriNetUnfolderBase]: 306000/419828 cut-off events. [2023-08-04 01:55:25,509 INFO L125 PetriNetUnfolderBase]: For 111303/111303 co-relation queries the response was YES. [2023-08-04 01:55:28,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 888639 conditions, 419828 events. 306000/419828 cut-off events. For 111303/111303 co-relation queries the response was YES. Maximal size of possible extension queue 6764. Compared 2976649 event pairs, 211818 based on Foata normal form. 0/390379 useless extension candidates. Maximal degree in co-relation 888607. Up to 395505 conditions per place. [2023-08-04 01:55:29,930 INFO L140 encePairwiseOnDemand]: 396/399 looper letters, 77 selfloop transitions, 2 changer transitions 0/115 dead transitions. [2023-08-04 01:55:29,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 115 transitions, 542 flow [2023-08-04 01:55:29,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:55:29,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:55:29,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 619 transitions. [2023-08-04 01:55:29,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5171261487050961 [2023-08-04 01:55:29,932 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 619 transitions. [2023-08-04 01:55:29,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 619 transitions. [2023-08-04 01:55:29,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:55:29,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 619 transitions. [2023-08-04 01:55:29,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:55:29,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:55:29,935 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:55:29,935 INFO L175 Difference]: Start difference. First operand has 89 places, 110 transitions, 374 flow. Second operand 3 states and 619 transitions. [2023-08-04 01:55:29,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 115 transitions, 542 flow [2023-08-04 01:55:30,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 115 transitions, 540 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 01:55:30,001 INFO L231 Difference]: Finished difference. Result has 91 places, 111 transitions, 384 flow [2023-08-04 01:55:30,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=384, PETRI_PLACES=91, PETRI_TRANSITIONS=111} [2023-08-04 01:55:30,002 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 4 predicate places. [2023-08-04 01:55:30,002 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 111 transitions, 384 flow [2023-08-04 01:55:30,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:55:30,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:55:30,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:55:30,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-04 01:55:30,203 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,SelfDestructingSolverStorable12 [2023-08-04 01:55:30,205 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:55:30,206 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:55:30,206 INFO L85 PathProgramCache]: Analyzing trace with hash -663781404, now seen corresponding path program 1 times [2023-08-04 01:55:30,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:55:30,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604914064] [2023-08-04 01:55:30,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:55:30,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:55:30,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:55:30,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 01:55:30,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:55:30,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604914064] [2023-08-04 01:55:30,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604914064] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:55:30,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605318801] [2023-08-04 01:55:30,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:55:30,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:55:30,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:55:30,247 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) [2023-08-04 01:55:30,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-04 01:55:30,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:55:30,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 01:55:30,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:55:30,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 01:55:30,340 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:55:30,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605318801] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:55:30,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:55:30,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 01:55:30,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045919240] [2023-08-04 01:55:30,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:55:30,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:55:30,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:55:30,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:55:30,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:55:30,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 399 [2023-08-04 01:55:30,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 111 transitions, 384 flow. Second operand has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:55:30,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:55:30,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 399 [2023-08-04 01:55:30,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:55:58,947 INFO L124 PetriNetUnfolderBase]: 304200/417398 cut-off events. [2023-08-04 01:55:58,947 INFO L125 PetriNetUnfolderBase]: For 103709/103709 co-relation queries the response was YES. [2023-08-04 01:56:01,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 883550 conditions, 417398 events. 304200/417398 cut-off events. For 103709/103709 co-relation queries the response was YES. Maximal size of possible extension queue 7186. Compared 2965542 event pairs, 210923 based on Foata normal form. 0/388291 useless extension candidates. Maximal degree in co-relation 392451. Up to 392561 conditions per place. [2023-08-04 01:56:04,560 INFO L140 encePairwiseOnDemand]: 396/399 looper letters, 80 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2023-08-04 01:56:04,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 118 transitions, 562 flow [2023-08-04 01:56:04,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:56:04,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:56:04,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 621 transitions. [2023-08-04 01:56:04,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.518796992481203 [2023-08-04 01:56:04,563 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 621 transitions. [2023-08-04 01:56:04,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 621 transitions. [2023-08-04 01:56:04,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:56:04,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 621 transitions. [2023-08-04 01:56:04,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:56:04,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:56:04,575 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:56:04,575 INFO L175 Difference]: Start difference. First operand has 91 places, 111 transitions, 384 flow. Second operand 3 states and 621 transitions. [2023-08-04 01:56:04,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 118 transitions, 562 flow [2023-08-04 01:56:04,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 118 transitions, 560 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 01:56:04,688 INFO L231 Difference]: Finished difference. Result has 93 places, 112 transitions, 394 flow [2023-08-04 01:56:04,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=394, PETRI_PLACES=93, PETRI_TRANSITIONS=112} [2023-08-04 01:56:04,690 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 6 predicate places. [2023-08-04 01:56:04,690 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 112 transitions, 394 flow [2023-08-04 01:56:04,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:56:04,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:56:04,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:56:04,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-04 01:56:04,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-04 01:56:04,895 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:56:04,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:56:04,895 INFO L85 PathProgramCache]: Analyzing trace with hash 809006243, now seen corresponding path program 1 times [2023-08-04 01:56:04,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:56:04,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949815222] [2023-08-04 01:56:04,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:56:04,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:56:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:56:04,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 01:56:04,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:56:04,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949815222] [2023-08-04 01:56:04,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949815222] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:56:04,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531666267] [2023-08-04 01:56:04,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:56:04,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:56:04,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:56:05,005 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) [2023-08-04 01:56:05,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-04 01:56:05,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:56:05,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 01:56:05,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:56:05,145 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 01:56:05,145 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:56:05,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531666267] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:56:05,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:56:05,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 01:56:05,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786094045] [2023-08-04 01:56:05,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:56:05,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:56:05,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:56:05,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:56:05,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:56:05,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 399 [2023-08-04 01:56:05,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 112 transitions, 394 flow. Second operand has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:56:05,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:56:05,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 399 [2023-08-04 01:56:05,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:56:38,209 INFO L124 PetriNetUnfolderBase]: 304056/421574 cut-off events. [2023-08-04 01:56:38,210 INFO L125 PetriNetUnfolderBase]: For 76805/76805 co-relation queries the response was YES. [2023-08-04 01:56:42,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 888039 conditions, 421574 events. 304056/421574 cut-off events. For 76805/76805 co-relation queries the response was YES. Maximal size of possible extension queue 7689. Compared 3066920 event pairs, 210236 based on Foata normal form. 0/393997 useless extension candidates. Maximal degree in co-relation 393683. Up to 389705 conditions per place. [2023-08-04 01:56:44,638 INFO L140 encePairwiseOnDemand]: 396/399 looper letters, 83 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2023-08-04 01:56:44,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 121 transitions, 582 flow [2023-08-04 01:56:44,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:56:44,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:56:44,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 623 transitions. [2023-08-04 01:56:44,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52046783625731 [2023-08-04 01:56:44,641 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 623 transitions. [2023-08-04 01:56:44,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 623 transitions. [2023-08-04 01:56:44,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:56:44,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 623 transitions. [2023-08-04 01:56:44,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.66666666666666) internal successors, (623), 3 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:56:44,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:56:44,661 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:56:44,661 INFO L175 Difference]: Start difference. First operand has 93 places, 112 transitions, 394 flow. Second operand 3 states and 623 transitions. [2023-08-04 01:56:44,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 121 transitions, 582 flow [2023-08-04 01:56:44,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 121 transitions, 580 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 01:56:44,810 INFO L231 Difference]: Finished difference. Result has 95 places, 113 transitions, 404 flow [2023-08-04 01:56:44,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=404, PETRI_PLACES=95, PETRI_TRANSITIONS=113} [2023-08-04 01:56:44,812 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 8 predicate places. [2023-08-04 01:56:44,813 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 113 transitions, 404 flow [2023-08-04 01:56:44,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:56:44,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:56:44,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:56:44,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-04 01:56:45,018 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,SelfDestructingSolverStorable14 [2023-08-04 01:56:45,018 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:56:45,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:56:45,019 INFO L85 PathProgramCache]: Analyzing trace with hash 649760956, now seen corresponding path program 1 times [2023-08-04 01:56:45,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:56:45,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187263026] [2023-08-04 01:56:45,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:56:45,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:56:45,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:56:45,055 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 01:56:45,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:56:45,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187263026] [2023-08-04 01:56:45,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187263026] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:56:45,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301758893] [2023-08-04 01:56:45,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:56:45,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:56:45,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:56:45,057 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) [2023-08-04 01:56:45,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-04 01:56:45,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:56:45,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 01:56:45,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:56:45,192 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-04 01:56:45,192 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:56:45,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301758893] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:56:45,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:56:45,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 01:56:45,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288835269] [2023-08-04 01:56:45,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:56:45,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:56:45,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:56:45,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:56:45,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:56:45,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 399 [2023-08-04 01:56:45,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 113 transitions, 404 flow. Second operand has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:56:45,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:56:45,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 399 [2023-08-04 01:56:45,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:57:19,057 INFO L124 PetriNetUnfolderBase]: 298968/415846 cut-off events. [2023-08-04 01:57:19,058 INFO L125 PetriNetUnfolderBase]: For 74869/74869 co-relation queries the response was YES. [2023-08-04 01:57:23,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 880440 conditions, 415846 events. 298968/415846 cut-off events. For 74869/74869 co-relation queries the response was YES. Maximal size of possible extension queue 8202. Compared 3042029 event pairs, 215818 based on Foata normal form. 0/390589 useless extension candidates. Maximal degree in co-relation 419339. Up to 361273 conditions per place. [2023-08-04 01:57:25,900 INFO L140 encePairwiseOnDemand]: 396/399 looper letters, 93 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2023-08-04 01:57:25,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 131 transitions, 654 flow [2023-08-04 01:57:25,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:57:25,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:57:25,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 632 transitions. [2023-08-04 01:57:25,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5279866332497911 [2023-08-04 01:57:25,903 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 632 transitions. [2023-08-04 01:57:25,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 632 transitions. [2023-08-04 01:57:25,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:57:25,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 632 transitions. [2023-08-04 01:57:25,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:57:25,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:57:25,929 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:57:25,929 INFO L175 Difference]: Start difference. First operand has 95 places, 113 transitions, 404 flow. Second operand 3 states and 632 transitions. [2023-08-04 01:57:25,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 131 transitions, 654 flow [2023-08-04 01:57:26,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 131 transitions, 652 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 01:57:26,012 INFO L231 Difference]: Finished difference. Result has 97 places, 114 transitions, 414 flow [2023-08-04 01:57:26,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=414, PETRI_PLACES=97, PETRI_TRANSITIONS=114} [2023-08-04 01:57:26,013 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 10 predicate places. [2023-08-04 01:57:26,013 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 114 transitions, 414 flow [2023-08-04 01:57:26,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:57:26,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:57:26,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:57:26,019 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-04 01:57:26,218 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,SelfDestructingSolverStorable15 [2023-08-04 01:57:26,219 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:57:26,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:57:26,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1487132594, now seen corresponding path program 1 times [2023-08-04 01:57:26,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:57:26,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970620359] [2023-08-04 01:57:26,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:57:26,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:57:26,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:57:26,306 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-04 01:57:26,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:57:26,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970620359] [2023-08-04 01:57:26,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970620359] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:57:26,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017541160] [2023-08-04 01:57:26,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:57:26,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:57:26,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:57:26,308 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 01:57:26,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-04 01:57:26,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:57:26,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 01:57:26,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:57:26,442 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 01:57:26,442 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:57:26,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017541160] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:57:26,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:57:26,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 01:57:26,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147291911] [2023-08-04 01:57:26,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:57:26,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:57:26,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:57:26,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:57:26,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:57:26,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 399 [2023-08-04 01:57:26,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 114 transitions, 414 flow. Second operand has 3 states, 3 states have (on average 188.33333333333334) internal successors, (565), 3 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:57:26,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:57:26,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 399 [2023-08-04 01:57:26,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:58:00,583 INFO L124 PetriNetUnfolderBase]: 304023/426153 cut-off events. [2023-08-04 01:58:00,583 INFO L125 PetriNetUnfolderBase]: For 95550/95550 co-relation queries the response was YES. [2023-08-04 01:58:04,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 926584 conditions, 426153 events. 304023/426153 cut-off events. For 95550/95550 co-relation queries the response was YES. Maximal size of possible extension queue 7792. Compared 3160417 event pairs, 199163 based on Foata normal form. 0/410273 useless extension candidates. Maximal degree in co-relation 479635. Up to 322953 conditions per place. [2023-08-04 01:58:06,881 INFO L140 encePairwiseOnDemand]: 396/399 looper letters, 94 selfloop transitions, 2 changer transitions 0/132 dead transitions. [2023-08-04 01:58:06,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 132 transitions, 666 flow [2023-08-04 01:58:06,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:58:06,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:58:06,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 632 transitions. [2023-08-04 01:58:06,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5279866332497911 [2023-08-04 01:58:06,883 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 632 transitions. [2023-08-04 01:58:06,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 632 transitions. [2023-08-04 01:58:06,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:58:06,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 632 transitions. [2023-08-04 01:58:06,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:58:06,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:58:06,901 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:58:06,901 INFO L175 Difference]: Start difference. First operand has 97 places, 114 transitions, 414 flow. Second operand 3 states and 632 transitions. [2023-08-04 01:58:06,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 132 transitions, 666 flow [2023-08-04 01:58:07,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 132 transitions, 664 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 01:58:07,436 INFO L231 Difference]: Finished difference. Result has 99 places, 115 transitions, 424 flow [2023-08-04 01:58:07,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=424, PETRI_PLACES=99, PETRI_TRANSITIONS=115} [2023-08-04 01:58:07,437 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 12 predicate places. [2023-08-04 01:58:07,438 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 115 transitions, 424 flow [2023-08-04 01:58:07,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.33333333333334) internal successors, (565), 3 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:58:07,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:58:07,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:58:07,448 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-04 01:58:07,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-04 01:58:07,644 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:58:07,644 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:58:07,644 INFO L85 PathProgramCache]: Analyzing trace with hash -2145773277, now seen corresponding path program 1 times [2023-08-04 01:58:07,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:58:07,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479207672] [2023-08-04 01:58:07,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:58:07,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:58:07,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:58:07,776 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 01:58:07,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:58:07,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479207672] [2023-08-04 01:58:07,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479207672] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:58:07,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666172128] [2023-08-04 01:58:07,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:58:07,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:58:07,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:58:07,797 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 01:58:07,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-04 01:58:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:58:07,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 01:58:07,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:58:07,995 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 01:58:07,996 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:58:07,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666172128] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:58:07,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:58:07,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 01:58:07,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810513236] [2023-08-04 01:58:07,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:58:07,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:58:07,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:58:07,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:58:07,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:58:08,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 399 [2023-08-04 01:58:08,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 115 transitions, 424 flow. Second operand has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:58:08,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:58:08,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 399 [2023-08-04 01:58:08,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-04 01:58:27,083 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-04 01:58:27,083 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-04 01:58:28,099 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-08-04 01:58:28,099 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 [2023-08-04 01:58:28,958 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-04 01:58:28,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-04 01:58:28,959 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-08-04 01:58:28,959 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:58:28,959 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was TIMEOUT (2/2) [2023-08-04 01:58:28,960 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 01:58:28,960 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 01:58:28,963 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 01:58:28 BasicIcfg [2023-08-04 01:58:28,963 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 01:58:28,963 INFO L158 Benchmark]: Toolchain (without parser) took 607791.80ms. Allocated memory was 511.7MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 465.7MB in the beginning and 9.1GB in the end (delta: -8.6GB). Peak memory consumption was 7.2GB. Max. memory is 16.0GB. [2023-08-04 01:58:28,963 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 348.1MB. Free memory is still 301.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 01:58:28,964 INFO L158 Benchmark]: CACSL2BoogieTranslator took 243.05ms. Allocated memory is still 511.7MB. Free memory was 465.3MB in the beginning and 453.8MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-04 01:58:28,964 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.37ms. Allocated memory is still 511.7MB. Free memory was 453.8MB in the beginning and 451.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 01:58:28,964 INFO L158 Benchmark]: Boogie Preprocessor took 26.37ms. Allocated memory is still 511.7MB. Free memory was 451.8MB in the beginning and 450.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 01:58:28,964 INFO L158 Benchmark]: RCFGBuilder took 411.27ms. Allocated memory is still 511.7MB. Free memory was 450.0MB in the beginning and 432.2MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-04 01:58:28,964 INFO L158 Benchmark]: TraceAbstraction took 607065.06ms. Allocated memory was 511.7MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 431.5MB in the beginning and 9.1GB in the end (delta: -8.7GB). Peak memory consumption was 7.2GB. Max. memory is 16.0GB. [2023-08-04 01:58:28,965 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 348.1MB. Free memory is still 301.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 243.05ms. Allocated memory is still 511.7MB. Free memory was 465.3MB in the beginning and 453.8MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 39.37ms. Allocated memory is still 511.7MB. Free memory was 453.8MB in the beginning and 451.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 26.37ms. Allocated memory is still 511.7MB. Free memory was 451.8MB in the beginning and 450.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 411.27ms. Allocated memory is still 511.7MB. Free memory was 450.0MB in the beginning and 432.2MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 607065.06ms. Allocated memory was 511.7MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 431.5MB in the beginning and 9.1GB in the end (delta: -8.7GB). Peak memory consumption was 7.2GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.8s, 170 PlacesBefore, 55 PlacesAfterwards, 195 TransitionsBefore, 66 TransitionsAfterwards, 6244 CoEnabledTransitionPairs, 6 FixpointIterations, 40 TrivialSequentialCompositions, 68 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 26 ConcurrentYvCompositions, 14 ChoiceCompositions, 149 TotalNumberOfCompositions, 16931 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 15529, independent: 15472, independent conditional: 0, independent unconditional: 15472, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3472, independent: 3443, independent conditional: 0, independent unconditional: 3443, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 15529, independent: 12029, independent conditional: 0, independent unconditional: 12029, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 3472, unknown conditional: 0, unknown unconditional: 3472] , Statistics on independence cache: Total cache size (in pairs): 482, Positive cache size: 474, Positive conditional cache size: 0, Positive unconditional cache size: 474, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.2s, 202 PlacesBefore, 87 PlacesAfterwards, 243 TransitionsBefore, 110 TransitionsAfterwards, 16072 CoEnabledTransitionPairs, 6 FixpointIterations, 42 TrivialSequentialCompositions, 64 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 34 ConcurrentYvCompositions, 18 ChoiceCompositions, 159 TotalNumberOfCompositions, 77946 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 48783, independent: 48378, independent conditional: 0, independent unconditional: 48378, dependent: 405, dependent conditional: 0, dependent unconditional: 405, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8799, independent: 8717, independent conditional: 0, independent unconditional: 8717, dependent: 82, dependent conditional: 0, dependent unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 48783, independent: 39661, independent conditional: 0, independent unconditional: 39661, dependent: 323, dependent conditional: 0, dependent unconditional: 323, unknown: 8799, unknown conditional: 0, unknown unconditional: 8799] , Statistics on independence cache: Total cache size (in pairs): 1968, Positive cache size: 1944, Positive conditional cache size: 0, Positive unconditional cache size: 1944, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.1s, 202 PlacesBefore, 87 PlacesAfterwards, 243 TransitionsBefore, 110 TransitionsAfterwards, 16072 CoEnabledTransitionPairs, 6 FixpointIterations, 39 TrivialSequentialCompositions, 64 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 34 ConcurrentYvCompositions, 18 ChoiceCompositions, 156 TotalNumberOfCompositions, 78288 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 47131, independent: 46726, independent conditional: 0, independent unconditional: 46726, dependent: 405, dependent conditional: 0, dependent unconditional: 405, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8667, independent: 8594, independent conditional: 0, independent unconditional: 8594, dependent: 73, dependent conditional: 0, dependent unconditional: 73, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 47131, independent: 38132, independent conditional: 0, independent unconditional: 38132, dependent: 332, dependent conditional: 0, dependent unconditional: 332, unknown: 8667, unknown conditional: 0, unknown unconditional: 8667] , Statistics on independence cache: Total cache size (in pairs): 1884, Positive cache size: 1860, Positive conditional cache size: 0, Positive unconditional cache size: 1860, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 9 procedures, 186 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.3s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.1s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=200occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 13 procedures, 210 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 348.6s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 336.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 756 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 673 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1658 IncrementalHoareTripleChecker+Invalid, 1692 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 17 mSDtfsCounter, 1658 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 276 GetRequests, 242 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=369occurred in iteration=1, InterpolantAutomatonStates: 41, 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: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 409 NumberOfCodeBlocks, 409 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 464 ConstructedInterpolants, 0 QuantifiedInterpolants, 704 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1142 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 20 InterpolantComputations, 7 PerfectInterpolantSequences, 284/313 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 1 thread instances CFG has 13 procedures, 210 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 254.0s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 244.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 176 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 103 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1115 IncrementalHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 17 mSDtfsCounter, 1115 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 155 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=424occurred in iteration=6, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 291 NumberOfCodeBlocks, 291 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 278 ConstructedInterpolants, 0 QuantifiedInterpolants, 356 SizeOfPredicates, 0 NumberOfNonLiveVariables, 921 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 36/42 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown