/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_test-easy8.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 03:31:18,769 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 03:31:18,844 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 03:31:18,849 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 03:31:18,850 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 03:31:18,850 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 03:31:18,851 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 03:31:18,878 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 03:31:18,880 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 03:31:18,883 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 03:31:18,883 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 03:31:18,884 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 03:31:18,884 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 03:31:18,885 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 03:31:18,885 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 03:31:18,886 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 03:31:18,886 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 03:31:18,886 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 03:31:18,886 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 03:31:18,886 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 03:31:18,887 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 03:31:18,887 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 03:31:18,887 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 03:31:18,887 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 03:31:18,888 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 03:31:18,889 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 03:31:18,889 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 03:31:18,889 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 03:31:18,890 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 03:31:18,890 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 03:31:18,891 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 03:31:18,891 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 03:31:18,891 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 03:31:18,891 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 03:31:18,891 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 03:31:18,891 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 03:31:18,891 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 03:31:18,892 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 03:31:18,892 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 03:31:18,892 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 03:31:18,892 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 03:31:18,892 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-04 03:31:19,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 03:31:19,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 03:31:19,135 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 03:31:19,136 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 03:31:19,136 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 03:31:19,138 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_test-easy8.wvr_bound2.c [2023-08-04 03:31:20,283 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 03:31:20,440 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 03:31:20,441 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_test-easy8.wvr_bound2.c [2023-08-04 03:31:20,445 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc76b562e/0811839c051f47dfabf98e2d4b001b91/FLAG8fe9fa70b [2023-08-04 03:31:20,457 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc76b562e/0811839c051f47dfabf98e2d4b001b91 [2023-08-04 03:31:20,459 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 03:31:20,460 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 03:31:20,461 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 03:31:20,461 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 03:31:20,464 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 03:31:20,465 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 03:31:20" (1/1) ... [2023-08-04 03:31:20,466 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19f304e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:31:20, skipping insertion in model container [2023-08-04 03:31:20,466 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 03:31:20" (1/1) ... [2023-08-04 03:31:20,483 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 03:31:20,612 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_test-easy8.wvr_bound2.c[2143,2156] [2023-08-04 03:31:20,613 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 03:31:20,621 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 03:31:20,642 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_test-easy8.wvr_bound2.c[2143,2156] [2023-08-04 03:31:20,643 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 03:31:20,649 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 03:31:20,649 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 03:31:20,654 INFO L206 MainTranslator]: Completed translation [2023-08-04 03:31:20,655 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:31:20 WrapperNode [2023-08-04 03:31:20,655 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 03:31:20,656 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 03:31:20,656 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 03:31:20,656 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 03:31:20,665 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:31:20" (1/1) ... [2023-08-04 03:31:20,675 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:31:20" (1/1) ... [2023-08-04 03:31:20,692 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2023-08-04 03:31:20,693 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 03:31:20,693 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 03:31:20,694 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 03:31:20,694 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 03:31:20,699 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:31:20" (1/1) ... [2023-08-04 03:31:20,700 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:31:20" (1/1) ... [2023-08-04 03:31:20,702 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:31:20" (1/1) ... [2023-08-04 03:31:20,702 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:31:20" (1/1) ... [2023-08-04 03:31:20,706 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:31:20" (1/1) ... [2023-08-04 03:31:20,709 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:31:20" (1/1) ... [2023-08-04 03:31:20,710 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:31:20" (1/1) ... [2023-08-04 03:31:20,711 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:31:20" (1/1) ... [2023-08-04 03:31:20,713 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 03:31:20,714 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 03:31:20,714 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 03:31:20,714 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 03:31:20,715 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:31:20" (1/1) ... [2023-08-04 03:31:20,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 03:31:20,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:31:20,747 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 03:31:20,749 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 03:31:20,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 03:31:20,774 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-04 03:31:20,775 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-04 03:31:20,775 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-04 03:31:20,775 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-04 03:31:20,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 03:31:20,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 03:31:20,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 03:31:20,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 03:31:20,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 03:31:20,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 03:31:20,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 03:31:20,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 03:31:20,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 03:31:20,777 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 03:31:20,851 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 03:31:20,853 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 03:31:21,018 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 03:31:21,040 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 03:31:21,041 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-04 03:31:21,043 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 03:31:21 BoogieIcfgContainer [2023-08-04 03:31:21,043 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 03:31:21,046 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 03:31:21,046 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 03:31:21,049 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 03:31:21,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 03:31:20" (1/3) ... [2023-08-04 03:31:21,049 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f5f1734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 03:31:21, skipping insertion in model container [2023-08-04 03:31:21,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:31:20" (2/3) ... [2023-08-04 03:31:21,050 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f5f1734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 03:31:21, skipping insertion in model container [2023-08-04 03:31:21,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 03:31:21" (3/3) ... [2023-08-04 03:31:21,051 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_test-easy8.wvr_bound2.c [2023-08-04 03:31:21,056 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 03:31:21,062 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 03:31:21,062 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 03:31:21,063 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 03:31:21,119 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-04 03:31:21,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 97 transitions, 216 flow [2023-08-04 03:31:21,220 INFO L124 PetriNetUnfolderBase]: 27/230 cut-off events. [2023-08-04 03:31:21,220 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-04 03:31:21,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 230 events. 27/230 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 776 event pairs, 0 based on Foata normal form. 0/193 useless extension candidates. Maximal degree in co-relation 121. Up to 8 conditions per place. [2023-08-04 03:31:21,227 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 97 transitions, 216 flow [2023-08-04 03:31:21,231 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 95 transitions, 206 flow [2023-08-04 03:31:21,234 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 03:31:21,242 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 95 transitions, 206 flow [2023-08-04 03:31:21,244 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 95 transitions, 206 flow [2023-08-04 03:31:21,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 95 transitions, 206 flow [2023-08-04 03:31:21,290 INFO L124 PetriNetUnfolderBase]: 23/218 cut-off events. [2023-08-04 03:31:21,290 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-04 03:31:21,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 218 events. 23/218 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 707 event pairs, 0 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 117. Up to 8 conditions per place. [2023-08-04 03:31:21,294 INFO L119 LiptonReduction]: Number of co-enabled transitions 1398 [2023-08-04 03:31:23,135 INFO L134 LiptonReduction]: Checked pairs total: 1725 [2023-08-04 03:31:23,136 INFO L136 LiptonReduction]: Total number of compositions: 86 [2023-08-04 03:31:23,153 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 03:31:23,158 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;@4427c89b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 03:31:23,158 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-04 03:31:23,163 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 03:31:23,163 INFO L124 PetriNetUnfolderBase]: 0/22 cut-off events. [2023-08-04 03:31:23,163 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 03:31:23,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:31:23,164 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 03:31:23,164 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 03:31:23,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:31:23,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1756795114, now seen corresponding path program 1 times [2023-08-04 03:31:23,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:31:23,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944084455] [2023-08-04 03:31:23,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:23,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:31:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 03:31:23,255 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 03:31:23,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 03:31:23,291 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 03:31:23,293 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 03:31:23,294 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-04 03:31:23,295 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-04 03:31:23,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 03:31:23,296 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 03:31:23,301 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-04 03:31:23,302 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 03:31:23,302 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 03:31:23,336 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-04 03:31:23,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 115 transitions, 278 flow [2023-08-04 03:31:23,427 INFO L124 PetriNetUnfolderBase]: 119/776 cut-off events. [2023-08-04 03:31:23,428 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-04 03:31:23,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 873 conditions, 776 events. 119/776 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3953 event pairs, 1 based on Foata normal form. 0/654 useless extension candidates. Maximal degree in co-relation 449. Up to 32 conditions per place. [2023-08-04 03:31:23,432 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 115 transitions, 278 flow [2023-08-04 03:31:23,435 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 115 transitions, 278 flow [2023-08-04 03:31:23,436 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 03:31:23,436 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 109 places, 115 transitions, 278 flow [2023-08-04 03:31:23,436 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 109 places, 115 transitions, 278 flow [2023-08-04 03:31:23,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 115 transitions, 278 flow [2023-08-04 03:31:23,497 INFO L124 PetriNetUnfolderBase]: 119/776 cut-off events. [2023-08-04 03:31:23,497 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-04 03:31:23,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 873 conditions, 776 events. 119/776 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3953 event pairs, 1 based on Foata normal form. 0/654 useless extension candidates. Maximal degree in co-relation 449. Up to 32 conditions per place. [2023-08-04 03:31:23,511 INFO L119 LiptonReduction]: Number of co-enabled transitions 3456 [2023-08-04 03:31:25,666 INFO L134 LiptonReduction]: Checked pairs total: 5643 [2023-08-04 03:31:25,667 INFO L136 LiptonReduction]: Total number of compositions: 96 [2023-08-04 03:31:25,668 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 03:31:25,669 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;@4427c89b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 03:31:25,670 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-04 03:31:25,675 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 03:31:25,675 INFO L124 PetriNetUnfolderBase]: 3/60 cut-off events. [2023-08-04 03:31:25,675 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-04 03:31:25,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:31:25,675 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-04 03:31:25,676 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 03:31:25,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:31:25,676 INFO L85 PathProgramCache]: Analyzing trace with hash 414816958, now seen corresponding path program 1 times [2023-08-04 03:31:25,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:31:25,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343073992] [2023-08-04 03:31:25,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:25,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:31:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:25,876 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 03:31:25,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:31:25,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343073992] [2023-08-04 03:31:25,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343073992] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:31:25,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313824615] [2023-08-04 03:31:25,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:25,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:31:25,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:31:25,882 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 03:31:25,905 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 03:31:25,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:25,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 03:31:25,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:31:26,021 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 03:31:26,021 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 03:31:26,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313824615] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:31:26,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 03:31:26,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-04 03:31:26,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240431451] [2023-08-04 03:31:26,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:31:26,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 03:31:26,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:31:26,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 03:31:26,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 03:31:26,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 211 [2023-08-04 03:31:26,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 87.6) internal successors, (438), 5 states have internal predecessors, (438), 0 states have call successors, (0), 0 states 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 03:31:26,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:31:26,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 211 [2023-08-04 03:31:26,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:31:26,281 INFO L124 PetriNetUnfolderBase]: 1068/1927 cut-off events. [2023-08-04 03:31:26,281 INFO L125 PetriNetUnfolderBase]: For 348/348 co-relation queries the response was YES. [2023-08-04 03:31:26,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4000 conditions, 1927 events. 1068/1927 cut-off events. For 348/348 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 9999 event pairs, 434 based on Foata normal form. 0/1705 useless extension candidates. Maximal degree in co-relation 1487. Up to 1743 conditions per place. [2023-08-04 03:31:26,287 INFO L140 encePairwiseOnDemand]: 206/211 looper letters, 16 selfloop transitions, 5 changer transitions 17/41 dead transitions. [2023-08-04 03:31:26,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 41 transitions, 198 flow [2023-08-04 03:31:26,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 03:31:26,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 03:31:26,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 468 transitions. [2023-08-04 03:31:26,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44360189573459713 [2023-08-04 03:31:26,300 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 468 transitions. [2023-08-04 03:31:26,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 468 transitions. [2023-08-04 03:31:26,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:31:26,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 468 transitions. [2023-08-04 03:31:26,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.6) internal successors, (468), 5 states have internal predecessors, (468), 0 states have call successors, (0), 0 states 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 03:31:26,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states 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 03:31:26,311 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states 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 03:31:26,313 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 120 flow. Second operand 5 states and 468 transitions. [2023-08-04 03:31:26,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 41 transitions, 198 flow [2023-08-04 03:31:26,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 41 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 03:31:26,318 INFO L231 Difference]: Finished difference. Result has 38 places, 20 transitions, 75 flow [2023-08-04 03:31:26,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=75, PETRI_PLACES=38, PETRI_TRANSITIONS=20} [2023-08-04 03:31:26,322 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 1 predicate places. [2023-08-04 03:31:26,322 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 20 transitions, 75 flow [2023-08-04 03:31:26,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.6) internal successors, (438), 5 states have internal predecessors, (438), 0 states have call successors, (0), 0 states 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 03:31:26,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:31:26,323 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2023-08-04 03:31:26,335 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 03:31:26,529 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 03:31:26,529 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 03:31:26,530 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:31:26,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1458544463, now seen corresponding path program 1 times [2023-08-04 03:31:26,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:31:26,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961955226] [2023-08-04 03:31:26,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:26,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:31:26,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:26,571 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 03:31:26,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:31:26,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961955226] [2023-08-04 03:31:26,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961955226] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:31:26,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:31:26,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 03:31:26,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545060152] [2023-08-04 03:31:26,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:31:26,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:31:26,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:31:26,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:31:26,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 03:31:26,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 211 [2023-08-04 03:31:26,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 20 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states 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 03:31:26,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:31:26,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 211 [2023-08-04 03:31:26,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:31:26,635 INFO L124 PetriNetUnfolderBase]: 180/349 cut-off events. [2023-08-04 03:31:26,635 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2023-08-04 03:31:26,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 766 conditions, 349 events. 180/349 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1266 event pairs, 114 based on Foata normal form. 1/343 useless extension candidates. Maximal degree in co-relation 308. Up to 313 conditions per place. [2023-08-04 03:31:26,637 INFO L140 encePairwiseOnDemand]: 208/211 looper letters, 16 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2023-08-04 03:31:26,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 21 transitions, 112 flow [2023-08-04 03:31:26,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:31:26,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:31:26,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 279 transitions. [2023-08-04 03:31:26,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44075829383886256 [2023-08-04 03:31:26,639 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 279 transitions. [2023-08-04 03:31:26,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 279 transitions. [2023-08-04 03:31:26,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:31:26,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 279 transitions. [2023-08-04 03:31:26,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states 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 03:31:26,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states 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 03:31:26,642 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states 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 03:31:26,643 INFO L175 Difference]: Start difference. First operand has 38 places, 20 transitions, 75 flow. Second operand 3 states and 279 transitions. [2023-08-04 03:31:26,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 21 transitions, 112 flow [2023-08-04 03:31:26,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 21 transitions, 109 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-04 03:31:26,644 INFO L231 Difference]: Finished difference. Result has 30 places, 19 transitions, 71 flow [2023-08-04 03:31:26,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=30, PETRI_TRANSITIONS=19} [2023-08-04 03:31:26,645 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -7 predicate places. [2023-08-04 03:31:26,645 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 19 transitions, 71 flow [2023-08-04 03:31:26,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states 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 03:31:26,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:31:26,646 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:31:26,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 03:31:26,646 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 03:31:26,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:31:26,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1116569, now seen corresponding path program 1 times [2023-08-04 03:31:26,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:31:26,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639990756] [2023-08-04 03:31:26,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:26,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:31:26,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:26,696 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 03:31:26,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:31:26,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639990756] [2023-08-04 03:31:26,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639990756] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:31:26,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872447748] [2023-08-04 03:31:26,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:26,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:31:26,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:31:26,698 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 03:31:26,719 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 03:31:26,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:26,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 03:31:26,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:31:26,790 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 03:31:26,790 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 03:31:26,810 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 03:31:26,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872447748] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 03:31:26,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 03:31:26,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 03:31:26,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313289622] [2023-08-04 03:31:26,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 03:31:26,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 03:31:26,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:31:26,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 03:31:26,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:31:26,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 211 [2023-08-04 03:31:26,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 19 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 0 states have call successors, (0), 0 states 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 03:31:26,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:31:26,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 211 [2023-08-04 03:31:26,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:31:26,882 INFO L124 PetriNetUnfolderBase]: 136/255 cut-off events. [2023-08-04 03:31:26,882 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2023-08-04 03:31:26,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 557 conditions, 255 events. 136/255 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 767 event pairs, 48 based on Foata normal form. 2/252 useless extension candidates. Maximal degree in co-relation 310. Up to 217 conditions per place. [2023-08-04 03:31:26,884 INFO L140 encePairwiseOnDemand]: 208/211 looper letters, 16 selfloop transitions, 3 changer transitions 0/22 dead transitions. [2023-08-04 03:31:26,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 22 transitions, 114 flow [2023-08-04 03:31:26,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 03:31:26,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 03:31:26,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 364 transitions. [2023-08-04 03:31:26,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4312796208530806 [2023-08-04 03:31:26,886 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 364 transitions. [2023-08-04 03:31:26,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 364 transitions. [2023-08-04 03:31:26,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:31:26,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 364 transitions. [2023-08-04 03:31:26,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 03:31:26,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states 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 03:31:26,890 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states 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 03:31:26,890 INFO L175 Difference]: Start difference. First operand has 30 places, 19 transitions, 71 flow. Second operand 4 states and 364 transitions. [2023-08-04 03:31:26,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 22 transitions, 114 flow [2023-08-04 03:31:26,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 22 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 03:31:26,891 INFO L231 Difference]: Finished difference. Result has 31 places, 18 transitions, 68 flow [2023-08-04 03:31:26,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=68, PETRI_PLACES=31, PETRI_TRANSITIONS=18} [2023-08-04 03:31:26,894 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -6 predicate places. [2023-08-04 03:31:26,894 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 18 transitions, 68 flow [2023-08-04 03:31:26,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 0 states have call successors, (0), 0 states 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 03:31:26,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:31:26,897 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:31:26,908 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 03:31:27,107 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 03:31:27,108 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 03:31:27,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:31:27,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1097151714, now seen corresponding path program 1 times [2023-08-04 03:31:27,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:31:27,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16805729] [2023-08-04 03:31:27,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:27,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:31:27,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:27,206 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 03:31:27,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:31:27,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16805729] [2023-08-04 03:31:27,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16805729] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:31:27,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728102917] [2023-08-04 03:31:27,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:27,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:31:27,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:31:27,209 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 03:31:27,213 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 03:31:27,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:27,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 03:31:27,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:31:27,305 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 03:31:27,306 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 03:31:27,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728102917] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:31:27,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 03:31:27,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-04 03:31:27,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497163625] [2023-08-04 03:31:27,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:31:27,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 03:31:27,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:31:27,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 03:31:27,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 03:31:27,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 211 [2023-08-04 03:31:27,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 18 transitions, 68 flow. Second operand has 5 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 0 states have call successors, (0), 0 states 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 03:31:27,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:31:27,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 211 [2023-08-04 03:31:27,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:31:27,375 INFO L124 PetriNetUnfolderBase]: 104/199 cut-off events. [2023-08-04 03:31:27,376 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-08-04 03:31:27,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 449 conditions, 199 events. 104/199 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 536 event pairs, 8 based on Foata normal form. 16/210 useless extension candidates. Maximal degree in co-relation 237. Up to 80 conditions per place. [2023-08-04 03:31:27,376 INFO L140 encePairwiseOnDemand]: 208/211 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2023-08-04 03:31:27,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 138 flow [2023-08-04 03:31:27,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 03:31:27,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 03:31:27,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 456 transitions. [2023-08-04 03:31:27,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4322274881516588 [2023-08-04 03:31:27,378 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 456 transitions. [2023-08-04 03:31:27,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 456 transitions. [2023-08-04 03:31:27,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:31:27,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 456 transitions. [2023-08-04 03:31:27,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.2) internal successors, (456), 5 states have internal predecessors, (456), 0 states have call successors, (0), 0 states 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 03:31:27,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states 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 03:31:27,382 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states 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 03:31:27,382 INFO L175 Difference]: Start difference. First operand has 31 places, 18 transitions, 68 flow. Second operand 5 states and 456 transitions. [2023-08-04 03:31:27,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 138 flow [2023-08-04 03:31:27,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 28 transitions, 131 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-04 03:31:27,383 INFO L231 Difference]: Finished difference. Result has 30 places, 0 transitions, 0 flow [2023-08-04 03:31:27,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=30, PETRI_TRANSITIONS=0} [2023-08-04 03:31:27,385 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -7 predicate places. [2023-08-04 03:31:27,385 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 0 transitions, 0 flow [2023-08-04 03:31:27,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 0 states have call successors, (0), 0 states 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 03:31:27,386 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-04 03:31:27,386 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-04 03:31:27,396 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 03:31:27,591 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 03:31:27,592 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-04 03:31:27,592 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE,SAFE (1/2) [2023-08-04 03:31:27,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 115 transitions, 278 flow [2023-08-04 03:31:27,646 INFO L124 PetriNetUnfolderBase]: 119/776 cut-off events. [2023-08-04 03:31:27,646 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-04 03:31:27,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 873 conditions, 776 events. 119/776 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3953 event pairs, 1 based on Foata normal form. 0/654 useless extension candidates. Maximal degree in co-relation 449. Up to 32 conditions per place. [2023-08-04 03:31:27,649 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 115 transitions, 278 flow [2023-08-04 03:31:27,651 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 115 transitions, 278 flow [2023-08-04 03:31:27,651 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 03:31:27,652 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 109 places, 115 transitions, 278 flow [2023-08-04 03:31:27,652 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 109 places, 115 transitions, 278 flow [2023-08-04 03:31:27,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 115 transitions, 278 flow [2023-08-04 03:31:27,700 INFO L124 PetriNetUnfolderBase]: 119/776 cut-off events. [2023-08-04 03:31:27,700 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-04 03:31:27,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 873 conditions, 776 events. 119/776 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3953 event pairs, 1 based on Foata normal form. 0/654 useless extension candidates. Maximal degree in co-relation 449. Up to 32 conditions per place. [2023-08-04 03:31:27,726 INFO L119 LiptonReduction]: Number of co-enabled transitions 3456 [2023-08-04 03:31:29,795 INFO L134 LiptonReduction]: Checked pairs total: 5963 [2023-08-04 03:31:29,795 INFO L136 LiptonReduction]: Total number of compositions: 96 [2023-08-04 03:31:29,796 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 03:31:29,797 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;@4427c89b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 03:31:29,797 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 03:31:29,799 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 03:31:29,799 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-08-04 03:31:29,799 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 03:31:29,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:31:29,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 03:31:29,799 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:31:29,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:31:29,800 INFO L85 PathProgramCache]: Analyzing trace with hash 668442510, now seen corresponding path program 1 times [2023-08-04 03:31:29,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:31:29,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459942818] [2023-08-04 03:31:29,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:29,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:31:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:29,820 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 03:31:29,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:31:29,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459942818] [2023-08-04 03:31:29,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459942818] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:31:29,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:31:29,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 03:31:29,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814264415] [2023-08-04 03:31:29,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:31:29,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:31:29,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:31:29,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:31:29,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 03:31:29,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 211 [2023-08-04 03:31:29,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states 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 03:31:29,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:31:29,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 211 [2023-08-04 03:31:29,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:31:29,985 INFO L124 PetriNetUnfolderBase]: 1053/1879 cut-off events. [2023-08-04 03:31:29,986 INFO L125 PetriNetUnfolderBase]: For 370/370 co-relation queries the response was YES. [2023-08-04 03:31:29,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3913 conditions, 1879 events. 1053/1879 cut-off events. For 370/370 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 9487 event pairs, 641 based on Foata normal form. 0/1662 useless extension candidates. Maximal degree in co-relation 1484. Up to 1725 conditions per place. [2023-08-04 03:31:29,997 INFO L140 encePairwiseOnDemand]: 207/211 looper letters, 30 selfloop transitions, 2 changer transitions 2/38 dead transitions. [2023-08-04 03:31:29,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 38 transitions, 188 flow [2023-08-04 03:31:29,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:31:29,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:31:29,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 295 transitions. [2023-08-04 03:31:30,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4660347551342812 [2023-08-04 03:31:30,001 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 295 transitions. [2023-08-04 03:31:30,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 295 transitions. [2023-08-04 03:31:30,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:31:30,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 295 transitions. [2023-08-04 03:31:30,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states 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 03:31:30,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states 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 03:31:30,006 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states 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 03:31:30,006 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 120 flow. Second operand 3 states and 295 transitions. [2023-08-04 03:31:30,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 38 transitions, 188 flow [2023-08-04 03:31:30,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 38 transitions, 188 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 03:31:30,010 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 118 flow [2023-08-04 03:31:30,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2023-08-04 03:31:30,011 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 2 predicate places. [2023-08-04 03:31:30,012 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 118 flow [2023-08-04 03:31:30,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states 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 03:31:30,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:31:30,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:31:30,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 03:31:30,012 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:31:30,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:31:30,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1536190361, now seen corresponding path program 1 times [2023-08-04 03:31:30,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:31:30,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670297237] [2023-08-04 03:31:30,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:30,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:31:30,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:30,061 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 03:31:30,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:31:30,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670297237] [2023-08-04 03:31:30,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670297237] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:31:30,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637090813] [2023-08-04 03:31:30,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:30,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:31:30,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:31:30,065 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 03:31:30,090 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 03:31:30,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:30,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 03:31:30,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:31:30,156 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 03:31:30,156 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 03:31:30,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637090813] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:31:30,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 03:31:30,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 03:31:30,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196968093] [2023-08-04 03:31:30,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:31:30,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:31:30,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:31:30,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:31:30,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:31:30,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 211 [2023-08-04 03:31:30,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states 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 03:31:30,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:31:30,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 211 [2023-08-04 03:31:30,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:31:30,345 INFO L124 PetriNetUnfolderBase]: 1047/1873 cut-off events. [2023-08-04 03:31:30,345 INFO L125 PetriNetUnfolderBase]: For 305/305 co-relation queries the response was YES. [2023-08-04 03:31:30,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3890 conditions, 1873 events. 1047/1873 cut-off events. For 305/305 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 9396 event pairs, 644 based on Foata normal form. 0/1668 useless extension candidates. Maximal degree in co-relation 3862. Up to 1679 conditions per place. [2023-08-04 03:31:30,355 INFO L140 encePairwiseOnDemand]: 208/211 looper letters, 33 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2023-08-04 03:31:30,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 39 transitions, 198 flow [2023-08-04 03:31:30,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:31:30,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:31:30,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2023-08-04 03:31:30,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4676145339652449 [2023-08-04 03:31:30,357 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2023-08-04 03:31:30,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2023-08-04 03:31:30,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:31:30,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2023-08-04 03:31:30,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states 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 03:31:30,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states 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 03:31:30,360 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states 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 03:31:30,360 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 118 flow. Second operand 3 states and 296 transitions. [2023-08-04 03:31:30,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 39 transitions, 198 flow [2023-08-04 03:31:30,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 39 transitions, 190 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-04 03:31:30,363 INFO L231 Difference]: Finished difference. Result has 37 places, 35 transitions, 122 flow [2023-08-04 03:31:30,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=37, PETRI_TRANSITIONS=35} [2023-08-04 03:31:30,363 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 0 predicate places. [2023-08-04 03:31:30,363 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 35 transitions, 122 flow [2023-08-04 03:31:30,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states 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 03:31:30,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:31:30,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:31:30,373 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 03:31:30,569 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 03:31:30,570 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:31:30,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:31:30,570 INFO L85 PathProgramCache]: Analyzing trace with hash -221612268, now seen corresponding path program 1 times [2023-08-04 03:31:30,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:31:30,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924640119] [2023-08-04 03:31:30,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:30,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:31:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:30,622 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 03:31:30,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:31:30,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924640119] [2023-08-04 03:31:30,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924640119] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:31:30,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920388829] [2023-08-04 03:31:30,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:30,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:31:30,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:31:30,624 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 03:31:30,642 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 03:31:30,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:30,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 03:31:30,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:31:30,688 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 03:31:30,688 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 03:31:30,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920388829] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:31:30,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 03:31:30,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 03:31:30,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819323143] [2023-08-04 03:31:30,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:31:30,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:31:30,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:31:30,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:31:30,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:31:30,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 211 [2023-08-04 03:31:30,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states 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 03:31:30,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:31:30,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 211 [2023-08-04 03:31:30,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:31:30,845 INFO L124 PetriNetUnfolderBase]: 957/1759 cut-off events. [2023-08-04 03:31:30,846 INFO L125 PetriNetUnfolderBase]: For 223/223 co-relation queries the response was YES. [2023-08-04 03:31:30,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3741 conditions, 1759 events. 957/1759 cut-off events. For 223/223 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 8863 event pairs, 620 based on Foata normal form. 0/1622 useless extension candidates. Maximal degree in co-relation 1684. Up to 1295 conditions per place. [2023-08-04 03:31:30,854 INFO L140 encePairwiseOnDemand]: 208/211 looper letters, 39 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-08-04 03:31:30,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 45 transitions, 234 flow [2023-08-04 03:31:30,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:31:30,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:31:30,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 301 transitions. [2023-08-04 03:31:30,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4755134281200632 [2023-08-04 03:31:30,856 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 301 transitions. [2023-08-04 03:31:30,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 301 transitions. [2023-08-04 03:31:30,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:31:30,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 301 transitions. [2023-08-04 03:31:30,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states 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 03:31:30,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states 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 03:31:30,858 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states 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 03:31:30,858 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 122 flow. Second operand 3 states and 301 transitions. [2023-08-04 03:31:30,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 45 transitions, 234 flow [2023-08-04 03:31:30,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 45 transitions, 232 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 03:31:30,860 INFO L231 Difference]: Finished difference. Result has 39 places, 36 transitions, 132 flow [2023-08-04 03:31:30,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=39, PETRI_TRANSITIONS=36} [2023-08-04 03:31:30,861 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 2 predicate places. [2023-08-04 03:31:30,861 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 36 transitions, 132 flow [2023-08-04 03:31:30,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states 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 03:31:30,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:31:30,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:31:30,871 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 03:31:31,066 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 03:31:31,066 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:31:31,067 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:31:31,067 INFO L85 PathProgramCache]: Analyzing trace with hash -229241957, now seen corresponding path program 1 times [2023-08-04 03:31:31,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:31:31,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723765340] [2023-08-04 03:31:31,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:31,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:31:31,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:31,134 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 03:31:31,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:31:31,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723765340] [2023-08-04 03:31:31,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723765340] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:31:31,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81285290] [2023-08-04 03:31:31,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:31,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:31:31,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:31:31,136 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 03:31:31,164 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 03:31:31,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:31,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 03:31:31,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:31:31,207 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 03:31:31,208 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 03:31:31,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81285290] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:31:31,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 03:31:31,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-04 03:31:31,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728400742] [2023-08-04 03:31:31,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:31:31,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:31:31,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:31:31,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:31:31,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:31:31,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 211 [2023-08-04 03:31:31,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states 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 03:31:31,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:31:31,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 211 [2023-08-04 03:31:31,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:31:31,370 INFO L124 PetriNetUnfolderBase]: 964/1818 cut-off events. [2023-08-04 03:31:31,371 INFO L125 PetriNetUnfolderBase]: For 450/450 co-relation queries the response was YES. [2023-08-04 03:31:31,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4113 conditions, 1818 events. 964/1818 cut-off events. For 450/450 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 9183 event pairs, 675 based on Foata normal form. 0/1778 useless extension candidates. Maximal degree in co-relation 1963. Up to 1281 conditions per place. [2023-08-04 03:31:31,379 INFO L140 encePairwiseOnDemand]: 208/211 looper letters, 40 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-08-04 03:31:31,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 46 transitions, 246 flow [2023-08-04 03:31:31,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:31:31,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:31:31,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 301 transitions. [2023-08-04 03:31:31,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4755134281200632 [2023-08-04 03:31:31,381 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 301 transitions. [2023-08-04 03:31:31,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 301 transitions. [2023-08-04 03:31:31,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:31:31,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 301 transitions. [2023-08-04 03:31:31,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states 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 03:31:31,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states 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 03:31:31,383 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states 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 03:31:31,383 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 132 flow. Second operand 3 states and 301 transitions. [2023-08-04 03:31:31,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 46 transitions, 246 flow [2023-08-04 03:31:31,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 46 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 03:31:31,386 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 142 flow [2023-08-04 03:31:31,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-08-04 03:31:31,388 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 4 predicate places. [2023-08-04 03:31:31,388 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 142 flow [2023-08-04 03:31:31,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states 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 03:31:31,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:31:31,389 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] [2023-08-04 03:31:31,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-04 03:31:31,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:31:31,602 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:31:31,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:31:31,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1729063500, now seen corresponding path program 1 times [2023-08-04 03:31:31,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:31:31,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574093151] [2023-08-04 03:31:31,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:31,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:31:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:31,665 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 03:31:31,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:31:31,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574093151] [2023-08-04 03:31:31,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574093151] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:31:31,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079847132] [2023-08-04 03:31:31,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:31,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:31:31,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:31:31,667 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 03:31:31,670 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 03:31:31,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:31,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 03:31:31,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:31:31,750 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 03:31:31,750 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 03:31:31,790 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 03:31:31,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079847132] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 03:31:31,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 03:31:31,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 03:31:31,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118342912] [2023-08-04 03:31:31,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 03:31:31,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 03:31:31,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:31:31,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 03:31:31,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:31:31,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 211 [2023-08-04 03:31:31,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 142 flow. Second operand has 5 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 0 states have call successors, (0), 0 states 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 03:31:31,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:31:31,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 211 [2023-08-04 03:31:31,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:31:31,952 INFO L124 PetriNetUnfolderBase]: 862/1622 cut-off events. [2023-08-04 03:31:31,953 INFO L125 PetriNetUnfolderBase]: For 402/402 co-relation queries the response was YES. [2023-08-04 03:31:31,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3777 conditions, 1622 events. 862/1622 cut-off events. For 402/402 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 8007 event pairs, 387 based on Foata normal form. 2/1619 useless extension candidates. Maximal degree in co-relation 2162. Up to 1465 conditions per place. [2023-08-04 03:31:31,962 INFO L140 encePairwiseOnDemand]: 207/211 looper letters, 34 selfloop transitions, 3 changer transitions 1/42 dead transitions. [2023-08-04 03:31:31,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 42 transitions, 228 flow [2023-08-04 03:31:31,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 03:31:31,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 03:31:31,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 380 transitions. [2023-08-04 03:31:31,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45023696682464454 [2023-08-04 03:31:31,964 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 380 transitions. [2023-08-04 03:31:31,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 380 transitions. [2023-08-04 03:31:31,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:31:31,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 380 transitions. [2023-08-04 03:31:31,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:31:31,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states 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 03:31:31,967 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states 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 03:31:31,967 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 142 flow. Second operand 4 states and 380 transitions. [2023-08-04 03:31:31,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 42 transitions, 228 flow [2023-08-04 03:31:31,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 42 transitions, 226 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 03:31:31,973 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 154 flow [2023-08-04 03:31:31,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2023-08-04 03:31:31,974 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 8 predicate places. [2023-08-04 03:31:31,974 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 154 flow [2023-08-04 03:31:31,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 0 states have call successors, (0), 0 states 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 03:31:31,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:31:31,974 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:31:31,982 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 03:31:32,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:31:32,180 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:31:32,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:31:32,181 INFO L85 PathProgramCache]: Analyzing trace with hash 437504259, now seen corresponding path program 1 times [2023-08-04 03:31:32,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:31:32,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352175295] [2023-08-04 03:31:32,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:32,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:31:32,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:32,241 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 03:31:32,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:31:32,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352175295] [2023-08-04 03:31:32,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352175295] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:31:32,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681312153] [2023-08-04 03:31:32,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:32,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:31:32,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:31:32,243 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 03:31:32,245 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 03:31:32,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:32,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 03:31:32,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:31:32,323 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 03:31:32,324 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 03:31:32,338 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 03:31:32,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681312153] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 03:31:32,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 03:31:32,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 03:31:32,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761083111] [2023-08-04 03:31:32,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 03:31:32,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 03:31:32,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:31:32,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 03:31:32,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:31:32,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 211 [2023-08-04 03:31:32,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 154 flow. Second operand has 5 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 0 states have call successors, (0), 0 states 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 03:31:32,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:31:32,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 211 [2023-08-04 03:31:32,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:31:32,515 INFO L124 PetriNetUnfolderBase]: 810/1526 cut-off events. [2023-08-04 03:31:32,515 INFO L125 PetriNetUnfolderBase]: For 298/298 co-relation queries the response was YES. [2023-08-04 03:31:32,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3544 conditions, 1526 events. 810/1526 cut-off events. For 298/298 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 7213 event pairs, 364 based on Foata normal form. 8/1529 useless extension candidates. Maximal degree in co-relation 2191. Up to 1245 conditions per place. [2023-08-04 03:31:32,522 INFO L140 encePairwiseOnDemand]: 207/211 looper letters, 38 selfloop transitions, 3 changer transitions 1/46 dead transitions. [2023-08-04 03:31:32,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 46 transitions, 256 flow [2023-08-04 03:31:32,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 03:31:32,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 03:31:32,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 384 transitions. [2023-08-04 03:31:32,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4549763033175355 [2023-08-04 03:31:32,524 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 384 transitions. [2023-08-04 03:31:32,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 384 transitions. [2023-08-04 03:31:32,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:31:32,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 384 transitions. [2023-08-04 03:31:32,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states 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 03:31:32,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states 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 03:31:32,527 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states 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 03:31:32,527 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 154 flow. Second operand 4 states and 384 transitions. [2023-08-04 03:31:32,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 46 transitions, 256 flow [2023-08-04 03:31:32,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 46 transitions, 247 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-04 03:31:32,530 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 159 flow [2023-08-04 03:31:32,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=159, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2023-08-04 03:31:32,530 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2023-08-04 03:31:32,530 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 159 flow [2023-08-04 03:31:32,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 0 states have call successors, (0), 0 states 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 03:31:32,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:31:32,531 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:31:32,541 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 03:31:32,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-04 03:31:32,737 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:31:32,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:31:32,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1801481541, now seen corresponding path program 1 times [2023-08-04 03:31:32,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:31:32,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469671235] [2023-08-04 03:31:32,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:32,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:31:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:32,782 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-04 03:31:32,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:31:32,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469671235] [2023-08-04 03:31:32,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469671235] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:31:32,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927915999] [2023-08-04 03:31:32,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:32,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:31:32,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:31:32,784 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 03:31:32,787 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 03:31:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:32,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 03:31:32,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:31:32,862 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-04 03:31:32,862 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 03:31:32,877 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-04 03:31:32,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927915999] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 03:31:32,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 03:31:32,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 03:31:32,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219512965] [2023-08-04 03:31:32,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 03:31:32,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 03:31:32,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:31:32,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 03:31:32,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:31:32,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 211 [2023-08-04 03:31:32,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 159 flow. Second operand has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states 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 03:31:32,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:31:32,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 211 [2023-08-04 03:31:32,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:31:33,011 INFO L124 PetriNetUnfolderBase]: 534/1034 cut-off events. [2023-08-04 03:31:33,011 INFO L125 PetriNetUnfolderBase]: For 403/403 co-relation queries the response was YES. [2023-08-04 03:31:33,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2432 conditions, 1034 events. 534/1034 cut-off events. For 403/403 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4314 event pairs, 215 based on Foata normal form. 32/1061 useless extension candidates. Maximal degree in co-relation 1905. Up to 444 conditions per place. [2023-08-04 03:31:33,017 INFO L140 encePairwiseOnDemand]: 207/211 looper letters, 43 selfloop transitions, 4 changer transitions 0/51 dead transitions. [2023-08-04 03:31:33,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 51 transitions, 290 flow [2023-08-04 03:31:33,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 03:31:33,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 03:31:33,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 389 transitions. [2023-08-04 03:31:33,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609004739336493 [2023-08-04 03:31:33,019 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 389 transitions. [2023-08-04 03:31:33,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 389 transitions. [2023-08-04 03:31:33,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:31:33,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 389 transitions. [2023-08-04 03:31:33,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.25) internal successors, (389), 4 states have internal predecessors, (389), 0 states have call successors, (0), 0 states 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 03:31:33,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states 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 03:31:33,022 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states 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 03:31:33,022 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 159 flow. Second operand 4 states and 389 transitions. [2023-08-04 03:31:33,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 51 transitions, 290 flow [2023-08-04 03:31:33,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 51 transitions, 280 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-04 03:31:33,025 INFO L231 Difference]: Finished difference. Result has 49 places, 38 transitions, 170 flow [2023-08-04 03:31:33,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=170, PETRI_PLACES=49, PETRI_TRANSITIONS=38} [2023-08-04 03:31:33,025 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 12 predicate places. [2023-08-04 03:31:33,025 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 38 transitions, 170 flow [2023-08-04 03:31:33,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states 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 03:31:33,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:31:33,026 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:31:33,031 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 03:31:33,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:31:33,231 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:31:33,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:31:33,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1050349778, now seen corresponding path program 1 times [2023-08-04 03:31:33,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:31:33,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979766672] [2023-08-04 03:31:33,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:33,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:31:33,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:33,291 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-04 03:31:33,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:31:33,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979766672] [2023-08-04 03:31:33,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979766672] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:31:33,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126590067] [2023-08-04 03:31:33,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:33,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:31:33,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:31:33,294 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 03:31:33,299 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 03:31:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:33,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 03:31:33,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:31:33,378 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-04 03:31:33,379 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 03:31:33,393 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-04 03:31:33,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126590067] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 03:31:33,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 03:31:33,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 03:31:33,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260055075] [2023-08-04 03:31:33,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 03:31:33,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 03:31:33,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:31:33,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 03:31:33,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:31:33,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 211 [2023-08-04 03:31:33,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 170 flow. Second operand has 5 states, 5 states have (on average 91.4) internal successors, (457), 5 states have internal predecessors, (457), 0 states have call successors, (0), 0 states 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 03:31:33,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:31:33,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 211 [2023-08-04 03:31:33,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:31:33,550 INFO L124 PetriNetUnfolderBase]: 530/1023 cut-off events. [2023-08-04 03:31:33,550 INFO L125 PetriNetUnfolderBase]: For 688/688 co-relation queries the response was YES. [2023-08-04 03:31:33,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2608 conditions, 1023 events. 530/1023 cut-off events. For 688/688 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4238 event pairs, 439 based on Foata normal form. 9/1027 useless extension candidates. Maximal degree in co-relation 2086. Up to 749 conditions per place. [2023-08-04 03:31:33,555 INFO L140 encePairwiseOnDemand]: 207/211 looper letters, 43 selfloop transitions, 3 changer transitions 2/52 dead transitions. [2023-08-04 03:31:33,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 52 transitions, 302 flow [2023-08-04 03:31:33,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 03:31:33,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 03:31:33,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 389 transitions. [2023-08-04 03:31:33,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609004739336493 [2023-08-04 03:31:33,557 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 389 transitions. [2023-08-04 03:31:33,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 389 transitions. [2023-08-04 03:31:33,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:31:33,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 389 transitions. [2023-08-04 03:31:33,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.25) internal successors, (389), 4 states have internal predecessors, (389), 0 states have call successors, (0), 0 states 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 03:31:33,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states 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 03:31:33,560 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states 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 03:31:33,560 INFO L175 Difference]: Start difference. First operand has 49 places, 38 transitions, 170 flow. Second operand 4 states and 389 transitions. [2023-08-04 03:31:33,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 52 transitions, 302 flow [2023-08-04 03:31:33,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 52 transitions, 298 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-04 03:31:33,563 INFO L231 Difference]: Finished difference. Result has 53 places, 37 transitions, 174 flow [2023-08-04 03:31:33,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=53, PETRI_TRANSITIONS=37} [2023-08-04 03:31:33,563 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 16 predicate places. [2023-08-04 03:31:33,563 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 37 transitions, 174 flow [2023-08-04 03:31:33,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 91.4) internal successors, (457), 5 states have internal predecessors, (457), 0 states have call successors, (0), 0 states 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 03:31:33,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:31:33,564 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:31:33,571 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 03:31:33,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-04 03:31:33,769 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:31:33,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:31:33,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1674104360, now seen corresponding path program 1 times [2023-08-04 03:31:33,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:31:33,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33763083] [2023-08-04 03:31:33,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:33,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:31:33,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:33,873 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-04 03:31:33,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:31:33,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33763083] [2023-08-04 03:31:33,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33763083] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:31:33,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:31:33,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 03:31:33,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883019269] [2023-08-04 03:31:33,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:31:33,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:31:33,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:31:33,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:31:33,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 03:31:33,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 211 [2023-08-04 03:31:33,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 37 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states 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 03:31:33,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:31:33,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 211 [2023-08-04 03:31:33,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:31:34,029 INFO L124 PetriNetUnfolderBase]: 725/1421 cut-off events. [2023-08-04 03:31:34,029 INFO L125 PetriNetUnfolderBase]: For 920/920 co-relation queries the response was YES. [2023-08-04 03:31:34,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3668 conditions, 1421 events. 725/1421 cut-off events. For 920/920 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 6944 event pairs, 216 based on Foata normal form. 1/1421 useless extension candidates. Maximal degree in co-relation 3474. Up to 682 conditions per place. [2023-08-04 03:31:34,036 INFO L140 encePairwiseOnDemand]: 206/211 looper letters, 52 selfloop transitions, 4 changer transitions 1/61 dead transitions. [2023-08-04 03:31:34,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 61 transitions, 404 flow [2023-08-04 03:31:34,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:31:34,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:31:34,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 318 transitions. [2023-08-04 03:31:34,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023696682464455 [2023-08-04 03:31:34,038 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 318 transitions. [2023-08-04 03:31:34,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 318 transitions. [2023-08-04 03:31:34,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:31:34,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 318 transitions. [2023-08-04 03:31:34,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states 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 03:31:34,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states 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 03:31:34,040 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states 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 03:31:34,040 INFO L175 Difference]: Start difference. First operand has 53 places, 37 transitions, 174 flow. Second operand 3 states and 318 transitions. [2023-08-04 03:31:34,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 61 transitions, 404 flow [2023-08-04 03:31:34,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 61 transitions, 388 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-04 03:31:34,045 INFO L231 Difference]: Finished difference. Result has 54 places, 41 transitions, 200 flow [2023-08-04 03:31:34,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=54, PETRI_TRANSITIONS=41} [2023-08-04 03:31:34,046 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 17 predicate places. [2023-08-04 03:31:34,046 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 41 transitions, 200 flow [2023-08-04 03:31:34,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states 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 03:31:34,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:31:34,046 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:31:34,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-04 03:31:34,047 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:31:34,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:31:34,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1244264812, now seen corresponding path program 2 times [2023-08-04 03:31:34,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:31:34,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227454620] [2023-08-04 03:31:34,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:34,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:31:34,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:34,170 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-08-04 03:31:34,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:31:34,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227454620] [2023-08-04 03:31:34,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227454620] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:31:34,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:31:34,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 03:31:34,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710080021] [2023-08-04 03:31:34,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:31:34,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:31:34,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:31:34,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:31:34,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 03:31:34,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 211 [2023-08-04 03:31:34,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states 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 03:31:34,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:31:34,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 211 [2023-08-04 03:31:34,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:31:34,264 INFO L124 PetriNetUnfolderBase]: 283/674 cut-off events. [2023-08-04 03:31:34,265 INFO L125 PetriNetUnfolderBase]: For 1198/1198 co-relation queries the response was YES. [2023-08-04 03:31:34,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2134 conditions, 674 events. 283/674 cut-off events. For 1198/1198 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3191 event pairs, 94 based on Foata normal form. 180/849 useless extension candidates. Maximal degree in co-relation 2038. Up to 494 conditions per place. [2023-08-04 03:31:34,267 INFO L140 encePairwiseOnDemand]: 207/211 looper letters, 0 selfloop transitions, 0 changer transitions 50/50 dead transitions. [2023-08-04 03:31:34,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 50 transitions, 337 flow [2023-08-04 03:31:34,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:31:34,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:31:34,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 309 transitions. [2023-08-04 03:31:34,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4881516587677725 [2023-08-04 03:31:34,268 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 309 transitions. [2023-08-04 03:31:34,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 309 transitions. [2023-08-04 03:31:34,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:31:34,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 309 transitions. [2023-08-04 03:31:34,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states 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 03:31:34,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states 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 03:31:34,270 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states 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 03:31:34,271 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 200 flow. Second operand 3 states and 309 transitions. [2023-08-04 03:31:34,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 50 transitions, 337 flow [2023-08-04 03:31:34,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 50 transitions, 330 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-04 03:31:34,273 INFO L231 Difference]: Finished difference. Result has 52 places, 0 transitions, 0 flow [2023-08-04 03:31:34,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=52, PETRI_TRANSITIONS=0} [2023-08-04 03:31:34,273 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 15 predicate places. [2023-08-04 03:31:34,274 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 0 transitions, 0 flow [2023-08-04 03:31:34,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states 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 03:31:34,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-04 03:31:34,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-04 03:31:34,274 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:31:34,275 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (2/2) [2023-08-04 03:31:34,275 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 03:31:34,275 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 03:31:34,279 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 03:31:34 BasicIcfg [2023-08-04 03:31:34,279 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 03:31:34,279 INFO L158 Benchmark]: Toolchain (without parser) took 13819.21ms. Allocated memory was 432.0MB in the beginning and 520.1MB in the end (delta: 88.1MB). Free memory was 385.3MB in the beginning and 259.1MB in the end (delta: 126.3MB). Peak memory consumption was 215.3MB. Max. memory is 16.0GB. [2023-08-04 03:31:34,279 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 354.4MB. Free memory was 310.8MB in the beginning and 310.7MB in the end (delta: 140.4kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 03:31:34,280 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.03ms. Allocated memory is still 432.0MB. Free memory was 385.3MB in the beginning and 373.9MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-04 03:31:34,280 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.32ms. Allocated memory is still 432.0MB. Free memory was 373.9MB in the beginning and 372.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 03:31:34,280 INFO L158 Benchmark]: Boogie Preprocessor took 19.79ms. Allocated memory is still 432.0MB. Free memory was 372.7MB in the beginning and 371.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 03:31:34,280 INFO L158 Benchmark]: RCFGBuilder took 329.11ms. Allocated memory is still 432.0MB. Free memory was 370.7MB in the beginning and 356.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-04 03:31:34,280 INFO L158 Benchmark]: TraceAbstraction took 13232.97ms. Allocated memory was 432.0MB in the beginning and 520.1MB in the end (delta: 88.1MB). Free memory was 356.0MB in the beginning and 259.1MB in the end (delta: 96.9MB). Peak memory consumption was 185.9MB. Max. memory is 16.0GB. [2023-08-04 03:31:34,281 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 354.4MB. Free memory was 310.8MB in the beginning and 310.7MB in the end (delta: 140.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 194.03ms. Allocated memory is still 432.0MB. Free memory was 385.3MB in the beginning and 373.9MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 37.32ms. Allocated memory is still 432.0MB. Free memory was 373.9MB in the beginning and 372.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 19.79ms. Allocated memory is still 432.0MB. Free memory was 372.7MB in the beginning and 371.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 329.11ms. Allocated memory is still 432.0MB. Free memory was 370.7MB in the beginning and 356.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 13232.97ms. Allocated memory was 432.0MB in the beginning and 520.1MB in the end (delta: 88.1MB). Free memory was 356.0MB in the beginning and 259.1MB in the end (delta: 96.9MB). Peak memory consumption was 185.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 92 PlacesBefore, 25 PlacesAfterwards, 95 TransitionsBefore, 22 TransitionsAfterwards, 1398 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 6 ChoiceCompositions, 86 TotalNumberOfCompositions, 1725 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1471, independent: 1452, independent conditional: 0, independent unconditional: 1452, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 837, independent: 827, independent conditional: 0, independent unconditional: 827, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1471, independent: 625, independent conditional: 0, independent unconditional: 625, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 837, unknown conditional: 0, unknown unconditional: 837] , Statistics on independence cache: Total cache size (in pairs): 12, Positive cache size: 11, Positive conditional cache size: 0, Positive unconditional cache size: 11, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 109 PlacesBefore, 37 PlacesAfterwards, 115 TransitionsBefore, 36 TransitionsAfterwards, 3456 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 55 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 7 ChoiceCompositions, 96 TotalNumberOfCompositions, 5643 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4533, independent: 4494, independent conditional: 0, independent unconditional: 4494, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2011, independent: 1991, independent conditional: 0, independent unconditional: 1991, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4533, independent: 2503, independent conditional: 0, independent unconditional: 2503, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 2011, unknown conditional: 0, unknown unconditional: 2011] , Statistics on independence cache: Total cache size (in pairs): 61, Positive cache size: 57, Positive conditional cache size: 0, Positive unconditional cache size: 57, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 109 PlacesBefore, 37 PlacesAfterwards, 115 TransitionsBefore, 36 TransitionsAfterwards, 3456 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 55 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 7 ChoiceCompositions, 96 TotalNumberOfCompositions, 5963 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4745, independent: 4698, independent conditional: 0, independent unconditional: 4698, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2018, independent: 1996, independent conditional: 0, independent unconditional: 1996, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4745, independent: 2702, independent conditional: 0, independent unconditional: 2702, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 2018, unknown conditional: 0, unknown unconditional: 2018] , Statistics on independence cache: Total cache size (in pairs): 62, Positive cache size: 58, Positive conditional cache size: 0, Positive unconditional cache size: 58, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 75]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 5 procedures, 101 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.2s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred 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 7 procedures, 114 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.3s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 149 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 119 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 238 IncrementalHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 1 mSDtfsCounter, 238 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 218 SizeOfPredicates, 0 NumberOfNonLiveVariables, 297 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 66/79 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 7 procedures, 114 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.7s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 237 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 164 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 821 IncrementalHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 18 mSDtfsCounter, 821 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 293 GetRequests, 261 SyntacticMatches, 8 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=200occurred in iteration=9, InterpolantAutomatonStates: 34, 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, 0.7s InterpolantComputationTime, 401 NumberOfCodeBlocks, 401 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 497 ConstructedInterpolants, 0 QuantifiedInterpolants, 705 SizeOfPredicates, 0 NumberOfNonLiveVariables, 872 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 21 InterpolantComputations, 6 PerfectInterpolantSequences, 176/191 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-04 03:31:34,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...