/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/added_bound_to_unbounded/goblint-regression_28-race_reach_60-invariant_racefree_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 21:25:30,719 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 21:25:30,790 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 21:25:30,795 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 21:25:30,796 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 21:25:30,796 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 21:25:30,797 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 21:25:30,829 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 21:25:30,830 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 21:25:30,833 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 21:25:30,834 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 21:25:30,834 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 21:25:30,835 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 21:25:30,836 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 21:25:30,837 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 21:25:30,837 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 21:25:30,837 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 21:25:30,837 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 21:25:30,838 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 21:25:30,838 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 21:25:30,838 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 21:25:30,838 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 21:25:30,839 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 21:25:30,839 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 21:25:30,839 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 21:25:30,839 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 21:25:30,839 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 21:25:30,840 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 21:25:30,840 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 21:25:30,841 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 21:25:30,842 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 21:25:30,842 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 21:25:30,843 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 21:25:30,843 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 21:25:30,843 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 21:25:30,843 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 21:25:30,843 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 21:25:30,843 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 21:25:30,844 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 21:25:30,844 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 21:25:30,844 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 21:25:30,844 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-03 21:25:31,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 21:25:31,114 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 21:25:31,117 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 21:25:31,118 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 21:25:31,118 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 21:25:31,119 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_60-invariant_racefree_bound2.i [2023-08-03 21:25:32,330 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 21:25:32,561 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 21:25:32,561 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_60-invariant_racefree_bound2.i [2023-08-03 21:25:32,579 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ace0730c/a0aac079e1234119bf82db7f5e4eebbc/FLAGe3a30c03f [2023-08-03 21:25:32,594 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ace0730c/a0aac079e1234119bf82db7f5e4eebbc [2023-08-03 21:25:32,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 21:25:32,600 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 21:25:32,602 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 21:25:32,602 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 21:25:32,605 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 21:25:32,606 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 09:25:32" (1/1) ... [2023-08-03 21:25:32,607 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e509813 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:25:32, skipping insertion in model container [2023-08-03 21:25:32,607 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 09:25:32" (1/1) ... [2023-08-03 21:25:32,652 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 21:25:32,893 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_60-invariant_racefree_bound2.i[30176,30189] [2023-08-03 21:25:32,914 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 21:25:32,928 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 21:25:32,957 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-03 21:25:32,959 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-03 21:25:32,983 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_60-invariant_racefree_bound2.i[30176,30189] [2023-08-03 21:25:32,990 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 21:25:33,026 INFO L206 MainTranslator]: Completed translation [2023-08-03 21:25:33,027 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:25:33 WrapperNode [2023-08-03 21:25:33,027 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 21:25:33,028 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 21:25:33,028 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 21:25:33,028 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 21:25:33,034 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:25:33" (1/1) ... [2023-08-03 21:25:33,060 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:25:33" (1/1) ... [2023-08-03 21:25:33,081 INFO L138 Inliner]: procedures = 170, calls = 34, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 141 [2023-08-03 21:25:33,081 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 21:25:33,085 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 21:25:33,085 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 21:25:33,085 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 21:25:33,093 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:25:33" (1/1) ... [2023-08-03 21:25:33,093 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:25:33" (1/1) ... [2023-08-03 21:25:33,095 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:25:33" (1/1) ... [2023-08-03 21:25:33,095 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:25:33" (1/1) ... [2023-08-03 21:25:33,113 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:25:33" (1/1) ... [2023-08-03 21:25:33,116 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:25:33" (1/1) ... [2023-08-03 21:25:33,118 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:25:33" (1/1) ... [2023-08-03 21:25:33,119 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:25:33" (1/1) ... [2023-08-03 21:25:33,131 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 21:25:33,132 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 21:25:33,132 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 21:25:33,132 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 21:25:33,133 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:25:33" (1/1) ... [2023-08-03 21:25:33,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 21:25:33,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:25:33,161 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 21:25:33,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 21:25:33,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 21:25:33,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 21:25:33,188 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 21:25:33,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 21:25:33,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 21:25:33,189 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-03 21:25:33,189 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-03 21:25:33,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 21:25:33,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 21:25:33,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 21:25:33,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 21:25:33,190 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 21:25:33,300 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 21:25:33,303 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 21:25:33,489 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 21:25:33,496 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 21:25:33,496 INFO L302 CfgBuilder]: Removed 18 assume(true) statements. [2023-08-03 21:25:33,497 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 09:25:33 BoogieIcfgContainer [2023-08-03 21:25:33,498 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 21:25:33,500 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 21:25:33,500 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 21:25:33,502 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 21:25:33,502 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 09:25:32" (1/3) ... [2023-08-03 21:25:33,503 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b7d19a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 09:25:33, skipping insertion in model container [2023-08-03 21:25:33,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:25:33" (2/3) ... [2023-08-03 21:25:33,503 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b7d19a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 09:25:33, skipping insertion in model container [2023-08-03 21:25:33,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 09:25:33" (3/3) ... [2023-08-03 21:25:33,506 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_28-race_reach_60-invariant_racefree_bound2.i [2023-08-03 21:25:33,512 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 21:25:33,520 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 21:25:33,521 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 21:25:33,521 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 21:25:33,599 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-03 21:25:33,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 138 transitions, 284 flow [2023-08-03 21:25:33,681 INFO L124 PetriNetUnfolderBase]: 33/193 cut-off events. [2023-08-03 21:25:33,681 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 21:25:33,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 193 events. 33/193 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 633 event pairs, 0 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 105. Up to 6 conditions per place. [2023-08-03 21:25:33,689 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 138 transitions, 284 flow [2023-08-03 21:25:33,693 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 133 transitions, 271 flow [2023-08-03 21:25:33,696 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:25:33,702 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 133 transitions, 271 flow [2023-08-03 21:25:33,705 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 133 transitions, 271 flow [2023-08-03 21:25:33,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 133 transitions, 271 flow [2023-08-03 21:25:33,736 INFO L124 PetriNetUnfolderBase]: 32/188 cut-off events. [2023-08-03 21:25:33,737 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:25:33,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 188 events. 32/188 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 619 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 105. Up to 6 conditions per place. [2023-08-03 21:25:33,741 INFO L119 LiptonReduction]: Number of co-enabled transitions 5490 [2023-08-03 21:25:35,951 INFO L134 LiptonReduction]: Checked pairs total: 14551 [2023-08-03 21:25:35,951 INFO L136 LiptonReduction]: Total number of compositions: 97 [2023-08-03 21:25:35,963 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 21:25:35,969 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;@4808ccc7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:25:35,970 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-03 21:25:35,976 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:25:35,977 INFO L124 PetriNetUnfolderBase]: 8/41 cut-off events. [2023-08-03 21:25:35,977 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:25:35,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:25:35,978 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 21:25:35,978 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:25:35,982 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:25:35,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1289063369, now seen corresponding path program 1 times [2023-08-03 21:25:35,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:25:35,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480700051] [2023-08-03 21:25:35,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:25:35,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:25:36,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 21:25:36,110 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 21:25:36,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 21:25:36,145 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 21:25:36,147 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 21:25:36,148 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-03 21:25:36,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 21:25:36,149 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 21:25:36,152 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-03 21:25:36,152 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 21:25:36,152 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 21:25:36,173 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-03 21:25:36,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 185 transitions, 388 flow [2023-08-03 21:25:36,231 INFO L124 PetriNetUnfolderBase]: 57/319 cut-off events. [2023-08-03 21:25:36,231 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 21:25:36,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 319 events. 57/319 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1201 event pairs, 0 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 195. Up to 9 conditions per place. [2023-08-03 21:25:36,237 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 185 transitions, 388 flow [2023-08-03 21:25:36,240 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 185 transitions, 388 flow [2023-08-03 21:25:36,240 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:25:36,240 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 185 transitions, 388 flow [2023-08-03 21:25:36,241 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 185 transitions, 388 flow [2023-08-03 21:25:36,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 185 transitions, 388 flow [2023-08-03 21:25:36,277 INFO L124 PetriNetUnfolderBase]: 57/319 cut-off events. [2023-08-03 21:25:36,278 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 21:25:36,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 319 events. 57/319 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1201 event pairs, 0 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 195. Up to 9 conditions per place. [2023-08-03 21:25:36,289 INFO L119 LiptonReduction]: Number of co-enabled transitions 16020 [2023-08-03 21:25:38,616 INFO L134 LiptonReduction]: Checked pairs total: 45797 [2023-08-03 21:25:38,616 INFO L136 LiptonReduction]: Total number of compositions: 125 [2023-08-03 21:25:38,619 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 21:25:38,620 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;@4808ccc7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:25:38,620 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-03 21:25:38,628 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:25:38,628 INFO L124 PetriNetUnfolderBase]: 27/102 cut-off events. [2023-08-03 21:25:38,628 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-03 21:25:38,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:25:38,629 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 21:25:38,629 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:25:38,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:25:38,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1742642449, now seen corresponding path program 1 times [2023-08-03 21:25:38,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:25:38,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29509029] [2023-08-03 21:25:38,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:25:38,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:25:38,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:25:38,794 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:25:38,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:25:38,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29509029] [2023-08-03 21:25:38,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29509029] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:25:38,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019776808] [2023-08-03 21:25:38,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:25:38,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:25:38,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:25:38,805 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 21:25:38,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 21:25:38,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:25:38,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 21:25:38,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:25:38,963 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:25:38,963 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 21:25:38,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019776808] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:25:38,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 21:25:38,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 21:25:38,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879979136] [2023-08-03 21:25:38,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:25:38,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:25:38,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:25:38,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:25:38,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 21:25:39,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 310 [2023-08-03 21:25:39,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 95 transitions, 208 flow. Second operand has 5 states, 5 states have (on average 145.6) internal successors, (728), 5 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:39,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:25:39,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 310 [2023-08-03 21:25:39,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:25:39,766 INFO L124 PetriNetUnfolderBase]: 4795/8561 cut-off events. [2023-08-03 21:25:39,767 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-08-03 21:25:39,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16037 conditions, 8561 events. 4795/8561 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 65587 event pairs, 1756 based on Foata normal form. 1680/8848 useless extension candidates. Maximal degree in co-relation 9283. Up to 7020 conditions per place. [2023-08-03 21:25:39,789 INFO L140 encePairwiseOnDemand]: 280/310 looper letters, 0 selfloop transitions, 0 changer transitions 109/109 dead transitions. [2023-08-03 21:25:39,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 109 transitions, 406 flow [2023-08-03 21:25:39,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 21:25:39,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 21:25:39,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 860 transitions. [2023-08-03 21:25:39,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5548387096774193 [2023-08-03 21:25:39,804 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 860 transitions. [2023-08-03 21:25:39,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 860 transitions. [2023-08-03 21:25:39,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:25:39,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 860 transitions. [2023-08-03 21:25:39,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 172.0) internal successors, (860), 5 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:39,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 310.0) internal successors, (1860), 6 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:39,821 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 310.0) internal successors, (1860), 6 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:39,823 INFO L175 Difference]: Start difference. First operand has 70 places, 95 transitions, 208 flow. Second operand 5 states and 860 transitions. [2023-08-03 21:25:39,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 109 transitions, 406 flow [2023-08-03 21:25:39,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 109 transitions, 402 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 21:25:39,832 INFO L231 Difference]: Finished difference. Result has 71 places, 0 transitions, 0 flow [2023-08-03 21:25:39,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=71, PETRI_TRANSITIONS=0} [2023-08-03 21:25:39,839 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 1 predicate places. [2023-08-03 21:25:39,840 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 0 transitions, 0 flow [2023-08-03 21:25:39,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 145.6) internal successors, (728), 5 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:39,840 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-03 21:25:39,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 21:25:40,045 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 [2023-08-03 21:25:40,046 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 21:25:40,046 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE (1/2) [2023-08-03 21:25:40,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 185 transitions, 388 flow [2023-08-03 21:25:40,073 INFO L124 PetriNetUnfolderBase]: 57/319 cut-off events. [2023-08-03 21:25:40,073 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 21:25:40,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 319 events. 57/319 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1201 event pairs, 0 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 195. Up to 9 conditions per place. [2023-08-03 21:25:40,075 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 185 transitions, 388 flow [2023-08-03 21:25:40,077 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 185 transitions, 388 flow [2023-08-03 21:25:40,078 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:25:40,078 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 185 transitions, 388 flow [2023-08-03 21:25:40,078 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 185 transitions, 388 flow [2023-08-03 21:25:40,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 185 transitions, 388 flow [2023-08-03 21:25:40,106 INFO L124 PetriNetUnfolderBase]: 57/319 cut-off events. [2023-08-03 21:25:40,106 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 21:25:40,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 319 events. 57/319 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1201 event pairs, 0 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 195. Up to 9 conditions per place. [2023-08-03 21:25:40,117 INFO L119 LiptonReduction]: Number of co-enabled transitions 16020 [2023-08-03 21:25:42,369 INFO L134 LiptonReduction]: Checked pairs total: 45797 [2023-08-03 21:25:42,369 INFO L136 LiptonReduction]: Total number of compositions: 125 [2023-08-03 21:25:42,371 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 21:25:42,372 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;@4808ccc7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:25:42,372 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 21:25:42,374 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:25:42,374 INFO L124 PetriNetUnfolderBase]: 1/18 cut-off events. [2023-08-03 21:25:42,374 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:25:42,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:25:42,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 21:25:42,375 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 21:25:42,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:25:42,375 INFO L85 PathProgramCache]: Analyzing trace with hash 972394912, now seen corresponding path program 1 times [2023-08-03 21:25:42,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:25:42,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718048842] [2023-08-03 21:25:42,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:25:42,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:25:42,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:25:42,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:25:42,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:25:42,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718048842] [2023-08-03 21:25:42,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718048842] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:25:42,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:25:42,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 21:25:42,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519223349] [2023-08-03 21:25:42,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:25:42,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:25:42,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:25:42,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:25:42,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:25:42,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 310 [2023-08-03 21:25:42,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 95 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:42,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:25:42,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 310 [2023-08-03 21:25:42,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:25:43,073 INFO L124 PetriNetUnfolderBase]: 5106/8991 cut-off events. [2023-08-03 21:25:43,074 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2023-08-03 21:25:43,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16948 conditions, 8991 events. 5106/8991 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 67783 event pairs, 2208 based on Foata normal form. 1715/9079 useless extension candidates. Maximal degree in co-relation 2573. Up to 7850 conditions per place. [2023-08-03 21:25:43,130 INFO L140 encePairwiseOnDemand]: 281/310 looper letters, 58 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2023-08-03 21:25:43,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 83 transitions, 304 flow [2023-08-03 21:25:43,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:25:43,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:25:43,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 531 transitions. [2023-08-03 21:25:43,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5709677419354838 [2023-08-03 21:25:43,133 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 531 transitions. [2023-08-03 21:25:43,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 531 transitions. [2023-08-03 21:25:43,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:25:43,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 531 transitions. [2023-08-03 21:25:43,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:43,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 310.0) internal successors, (1240), 4 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:43,137 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 310.0) internal successors, (1240), 4 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:43,137 INFO L175 Difference]: Start difference. First operand has 70 places, 95 transitions, 208 flow. Second operand 3 states and 531 transitions. [2023-08-03 21:25:43,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 83 transitions, 304 flow [2023-08-03 21:25:43,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 83 transitions, 304 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 21:25:43,142 INFO L231 Difference]: Finished difference. Result has 73 places, 70 transitions, 168 flow [2023-08-03 21:25:43,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=73, PETRI_TRANSITIONS=70} [2023-08-03 21:25:43,143 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 3 predicate places. [2023-08-03 21:25:43,144 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 70 transitions, 168 flow [2023-08-03 21:25:43,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:43,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:25:43,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:25:43,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 21:25:43,144 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 21:25:43,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:25:43,145 INFO L85 PathProgramCache]: Analyzing trace with hash -2111608780, now seen corresponding path program 1 times [2023-08-03 21:25:43,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:25:43,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533266396] [2023-08-03 21:25:43,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:25:43,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:25:43,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:25:43,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:25:43,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:25:43,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533266396] [2023-08-03 21:25:43,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533266396] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:25:43,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:25:43,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 21:25:43,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125898670] [2023-08-03 21:25:43,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:25:43,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:25:43,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:25:43,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:25:43,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:25:43,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 310 [2023-08-03 21:25:43,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 70 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:43,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:25:43,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 310 [2023-08-03 21:25:43,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:25:44,128 INFO L124 PetriNetUnfolderBase]: 7094/12509 cut-off events. [2023-08-03 21:25:44,128 INFO L125 PetriNetUnfolderBase]: For 176/176 co-relation queries the response was YES. [2023-08-03 21:25:44,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24099 conditions, 12509 events. 7094/12509 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 96955 event pairs, 3492 based on Foata normal form. 0/10628 useless extension candidates. Maximal degree in co-relation 24053. Up to 7633 conditions per place. [2023-08-03 21:25:44,185 INFO L140 encePairwiseOnDemand]: 293/310 looper letters, 78 selfloop transitions, 10 changer transitions 1/106 dead transitions. [2023-08-03 21:25:44,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 106 transitions, 422 flow [2023-08-03 21:25:44,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:25:44,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:25:44,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 508 transitions. [2023-08-03 21:25:44,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546236559139785 [2023-08-03 21:25:44,187 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 508 transitions. [2023-08-03 21:25:44,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 508 transitions. [2023-08-03 21:25:44,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:25:44,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 508 transitions. [2023-08-03 21:25:44,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:44,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 310.0) internal successors, (1240), 4 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:44,192 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 310.0) internal successors, (1240), 4 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:44,195 INFO L175 Difference]: Start difference. First operand has 73 places, 70 transitions, 168 flow. Second operand 3 states and 508 transitions. [2023-08-03 21:25:44,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 106 transitions, 422 flow [2023-08-03 21:25:44,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 106 transitions, 420 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 21:25:44,203 INFO L231 Difference]: Finished difference. Result has 76 places, 77 transitions, 246 flow [2023-08-03 21:25:44,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=76, PETRI_TRANSITIONS=77} [2023-08-03 21:25:44,205 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 6 predicate places. [2023-08-03 21:25:44,205 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 77 transitions, 246 flow [2023-08-03 21:25:44,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:44,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:25:44,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:25:44,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 21:25:44,208 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 21:25:44,208 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:25:44,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1965523901, now seen corresponding path program 1 times [2023-08-03 21:25:44,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:25:44,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395429885] [2023-08-03 21:25:44,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:25:44,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:25:44,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:25:44,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:25:44,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:25:44,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395429885] [2023-08-03 21:25:44,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395429885] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:25:44,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965523371] [2023-08-03 21:25:44,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:25:44,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:25:44,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:25:44,285 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 21:25:44,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 21:25:44,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:25:44,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 21:25:44,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:25:44,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:25:44,368 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:25:44,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:25:44,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965523371] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:25:44,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 21:25:44,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 21:25:44,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911690867] [2023-08-03 21:25:44,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 21:25:44,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:25:44,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:25:44,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:25:44,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:25:44,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 310 [2023-08-03 21:25:44,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 77 transitions, 246 flow. Second operand has 5 states, 5 states have (on average 146.4) internal successors, (732), 5 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:44,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:25:44,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 310 [2023-08-03 21:25:44,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:25:45,169 INFO L124 PetriNetUnfolderBase]: 6288/11280 cut-off events. [2023-08-03 21:25:45,170 INFO L125 PetriNetUnfolderBase]: For 3322/3779 co-relation queries the response was YES. [2023-08-03 21:25:45,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25131 conditions, 11280 events. 6288/11280 cut-off events. For 3322/3779 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 88098 event pairs, 3729 based on Foata normal form. 166/10291 useless extension candidates. Maximal degree in co-relation 19987. Up to 9712 conditions per place. [2023-08-03 21:25:45,221 INFO L140 encePairwiseOnDemand]: 306/310 looper letters, 62 selfloop transitions, 3 changer transitions 1/91 dead transitions. [2023-08-03 21:25:45,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 91 transitions, 412 flow [2023-08-03 21:25:45,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 21:25:45,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 21:25:45,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 638 transitions. [2023-08-03 21:25:45,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5145161290322581 [2023-08-03 21:25:45,223 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 638 transitions. [2023-08-03 21:25:45,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 638 transitions. [2023-08-03 21:25:45,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:25:45,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 638 transitions. [2023-08-03 21:25:45,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 159.5) internal successors, (638), 4 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:45,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 310.0) internal successors, (1550), 5 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:45,228 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 310.0) internal successors, (1550), 5 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:45,228 INFO L175 Difference]: Start difference. First operand has 76 places, 77 transitions, 246 flow. Second operand 4 states and 638 transitions. [2023-08-03 21:25:45,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 91 transitions, 412 flow [2023-08-03 21:25:45,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 91 transitions, 390 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 21:25:45,250 INFO L231 Difference]: Finished difference. Result has 77 places, 77 transitions, 238 flow [2023-08-03 21:25:45,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=238, PETRI_PLACES=77, PETRI_TRANSITIONS=77} [2023-08-03 21:25:45,251 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 7 predicate places. [2023-08-03 21:25:45,251 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 77 transitions, 238 flow [2023-08-03 21:25:45,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 146.4) internal successors, (732), 5 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:45,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:25:45,252 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:25:45,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 21:25:45,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:25:45,459 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 21:25:45,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:25:45,460 INFO L85 PathProgramCache]: Analyzing trace with hash 48143068, now seen corresponding path program 1 times [2023-08-03 21:25:45,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:25:45,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327642156] [2023-08-03 21:25:45,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:25:45,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:25:45,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:25:45,622 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-03 21:25:45,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:25:45,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327642156] [2023-08-03 21:25:45,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327642156] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:25:45,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:25:45,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 21:25:45,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750103170] [2023-08-03 21:25:45,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:25:45,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 21:25:45,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:25:45,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 21:25:45,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-03 21:25:45,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 310 [2023-08-03 21:25:45,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 77 transitions, 238 flow. Second operand has 4 states, 4 states have (on average 141.5) internal successors, (566), 4 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:45,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:25:45,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 310 [2023-08-03 21:25:45,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:25:45,923 INFO L124 PetriNetUnfolderBase]: 1158/2437 cut-off events. [2023-08-03 21:25:45,923 INFO L125 PetriNetUnfolderBase]: For 481/494 co-relation queries the response was YES. [2023-08-03 21:25:45,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5113 conditions, 2437 events. 1158/2437 cut-off events. For 481/494 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 15820 event pairs, 504 based on Foata normal form. 98/2119 useless extension candidates. Maximal degree in co-relation 4341. Up to 1110 conditions per place. [2023-08-03 21:25:45,930 INFO L140 encePairwiseOnDemand]: 301/310 looper letters, 54 selfloop transitions, 9 changer transitions 13/99 dead transitions. [2023-08-03 21:25:45,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 99 transitions, 462 flow [2023-08-03 21:25:45,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 21:25:45,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 21:25:45,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 627 transitions. [2023-08-03 21:25:45,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5056451612903226 [2023-08-03 21:25:45,933 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 627 transitions. [2023-08-03 21:25:45,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 627 transitions. [2023-08-03 21:25:45,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:25:45,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 627 transitions. [2023-08-03 21:25:45,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.75) internal successors, (627), 4 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:45,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 310.0) internal successors, (1550), 5 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:45,938 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 310.0) internal successors, (1550), 5 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:45,938 INFO L175 Difference]: Start difference. First operand has 77 places, 77 transitions, 238 flow. Second operand 4 states and 627 transitions. [2023-08-03 21:25:45,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 99 transitions, 462 flow [2023-08-03 21:25:45,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 99 transitions, 442 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-03 21:25:45,941 INFO L231 Difference]: Finished difference. Result has 77 places, 73 transitions, 228 flow [2023-08-03 21:25:45,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=77, PETRI_TRANSITIONS=73} [2023-08-03 21:25:45,942 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 7 predicate places. [2023-08-03 21:25:45,942 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 73 transitions, 228 flow [2023-08-03 21:25:45,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 141.5) internal successors, (566), 4 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:45,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:25:45,942 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:25:45,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 21:25:45,943 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 21:25:45,943 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:25:45,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1307268279, now seen corresponding path program 1 times [2023-08-03 21:25:45,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:25:45,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569986019] [2023-08-03 21:25:45,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:25:45,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:25:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:25:46,065 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 21:25:46,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:25:46,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569986019] [2023-08-03 21:25:46,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569986019] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:25:46,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:25:46,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 21:25:46,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711903615] [2023-08-03 21:25:46,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:25:46,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 21:25:46,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:25:46,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 21:25:46,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-03 21:25:46,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 310 [2023-08-03 21:25:46,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 73 transitions, 228 flow. Second operand has 6 states, 6 states have (on average 135.5) internal successors, (813), 6 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:46,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:25:46,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 310 [2023-08-03 21:25:46,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:25:46,253 INFO L124 PetriNetUnfolderBase]: 142/458 cut-off events. [2023-08-03 21:25:46,253 INFO L125 PetriNetUnfolderBase]: For 212/212 co-relation queries the response was YES. [2023-08-03 21:25:46,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1085 conditions, 458 events. 142/458 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2016 event pairs, 128 based on Foata normal form. 0/412 useless extension candidates. Maximal degree in co-relation 518. Up to 378 conditions per place. [2023-08-03 21:25:46,254 INFO L140 encePairwiseOnDemand]: 301/310 looper letters, 0 selfloop transitions, 0 changer transitions 42/42 dead transitions. [2023-08-03 21:25:46,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 42 transitions, 208 flow [2023-08-03 21:25:46,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-03 21:25:46,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-03 21:25:46,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 966 transitions. [2023-08-03 21:25:46,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44516129032258067 [2023-08-03 21:25:46,257 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 966 transitions. [2023-08-03 21:25:46,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 966 transitions. [2023-08-03 21:25:46,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:25:46,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 966 transitions. [2023-08-03 21:25:46,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 138.0) internal successors, (966), 7 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:46,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 310.0) internal successors, (2480), 8 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:46,263 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 310.0) internal successors, (2480), 8 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:46,263 INFO L175 Difference]: Start difference. First operand has 77 places, 73 transitions, 228 flow. Second operand 7 states and 966 transitions. [2023-08-03 21:25:46,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 42 transitions, 208 flow [2023-08-03 21:25:46,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 42 transitions, 199 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-03 21:25:46,264 INFO L231 Difference]: Finished difference. Result has 54 places, 0 transitions, 0 flow [2023-08-03 21:25:46,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=54, PETRI_TRANSITIONS=0} [2023-08-03 21:25:46,265 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -16 predicate places. [2023-08-03 21:25:46,265 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 0 transitions, 0 flow [2023-08-03 21:25:46,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 135.5) internal successors, (813), 6 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:46,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-03 21:25:46,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 21:25:46,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-03 21:25:46,266 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-03 21:25:46,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 21:25:46,266 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-03 21:25:46,266 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE (2/2) [2023-08-03 21:25:46,268 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 21:25:46,268 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 21:25:46,272 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 09:25:46 BasicIcfg [2023-08-03 21:25:46,272 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 21:25:46,274 INFO L158 Benchmark]: Toolchain (without parser) took 13673.63ms. Allocated memory was 604.0MB in the beginning and 740.3MB in the end (delta: 136.3MB). Free memory was 554.7MB in the beginning and 644.1MB in the end (delta: -89.4MB). Peak memory consumption was 479.6MB. Max. memory is 16.0GB. [2023-08-03 21:25:46,274 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 388.0MB. Free memory is still 340.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 21:25:46,274 INFO L158 Benchmark]: CACSL2BoogieTranslator took 424.99ms. Allocated memory is still 604.0MB. Free memory was 554.7MB in the beginning and 534.6MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 21:25:46,274 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.40ms. Allocated memory is still 604.0MB. Free memory was 534.6MB in the beginning and 532.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 21:25:46,274 INFO L158 Benchmark]: Boogie Preprocessor took 45.70ms. Allocated memory is still 604.0MB. Free memory was 532.3MB in the beginning and 530.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 21:25:46,275 INFO L158 Benchmark]: RCFGBuilder took 366.03ms. Allocated memory is still 604.0MB. Free memory was 530.7MB in the beginning and 514.8MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-03 21:25:46,275 INFO L158 Benchmark]: TraceAbstraction took 12772.69ms. Allocated memory was 604.0MB in the beginning and 740.3MB in the end (delta: 136.3MB). Free memory was 514.2MB in the beginning and 644.1MB in the end (delta: -129.9MB). Peak memory consumption was 439.7MB. Max. memory is 16.0GB. [2023-08-03 21:25:46,277 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 388.0MB. Free memory is still 340.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 424.99ms. Allocated memory is still 604.0MB. Free memory was 554.7MB in the beginning and 534.6MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 53.40ms. Allocated memory is still 604.0MB. Free memory was 534.6MB in the beginning and 532.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 45.70ms. Allocated memory is still 604.0MB. Free memory was 532.3MB in the beginning and 530.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 366.03ms. Allocated memory is still 604.0MB. Free memory was 530.7MB in the beginning and 514.8MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 12772.69ms. Allocated memory was 604.0MB in the beginning and 740.3MB in the end (delta: 136.3MB). Free memory was 514.2MB in the beginning and 644.1MB in the end (delta: -129.9MB). Peak memory consumption was 439.7MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 115 PlacesBefore, 46 PlacesAfterwards, 133 TransitionsBefore, 62 TransitionsAfterwards, 5490 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 54 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 16 ConcurrentYvCompositions, 2 ChoiceCompositions, 97 TotalNumberOfCompositions, 14551 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5650, independent: 5316, independent conditional: 0, independent unconditional: 5316, dependent: 334, dependent conditional: 0, dependent unconditional: 334, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2706, independent: 2654, independent conditional: 0, independent unconditional: 2654, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5650, independent: 2662, independent conditional: 0, independent unconditional: 2662, dependent: 282, dependent conditional: 0, dependent unconditional: 282, unknown: 2706, unknown conditional: 0, unknown unconditional: 2706] , Statistics on independence cache: Total cache size (in pairs): 268, Positive cache size: 235, Positive conditional cache size: 0, Positive unconditional cache size: 235, Negative cache size: 33, Negative conditional cache size: 0, Negative unconditional cache size: 33, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 157 PlacesBefore, 70 PlacesAfterwards, 185 TransitionsBefore, 95 TransitionsAfterwards, 16020 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 68 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 29 ConcurrentYvCompositions, 3 ChoiceCompositions, 125 TotalNumberOfCompositions, 45797 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12951, independent: 12428, independent conditional: 0, independent unconditional: 12428, dependent: 523, dependent conditional: 0, dependent unconditional: 523, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 7293, independent: 7208, independent conditional: 0, independent unconditional: 7208, dependent: 85, dependent conditional: 0, dependent unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 12951, independent: 5220, independent conditional: 0, independent unconditional: 5220, dependent: 438, dependent conditional: 0, dependent unconditional: 438, unknown: 7293, unknown conditional: 0, unknown unconditional: 7293] , Statistics on independence cache: Total cache size (in pairs): 586, Positive cache size: 530, Positive conditional cache size: 0, Positive unconditional cache size: 530, Negative cache size: 56, Negative conditional cache size: 0, Negative unconditional cache size: 56, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 157 PlacesBefore, 70 PlacesAfterwards, 185 TransitionsBefore, 95 TransitionsAfterwards, 16020 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 68 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 29 ConcurrentYvCompositions, 3 ChoiceCompositions, 125 TotalNumberOfCompositions, 45797 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13390, independent: 12867, independent conditional: 0, independent unconditional: 12867, dependent: 523, dependent conditional: 0, dependent unconditional: 523, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 7342, independent: 7256, independent conditional: 0, independent unconditional: 7256, dependent: 86, dependent conditional: 0, dependent unconditional: 86, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 13390, independent: 5611, independent conditional: 0, independent unconditional: 5611, dependent: 437, dependent conditional: 0, dependent unconditional: 437, unknown: 7342, unknown conditional: 0, unknown unconditional: 7342] , Statistics on independence cache: Total cache size (in pairs): 627, Positive cache size: 574, Positive conditional cache size: 0, Positive unconditional cache size: 574, Negative cache size: 53, Negative conditional cache size: 0, Negative unconditional cache size: 53, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 691]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 691]: 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 3 procedures, 153 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.5s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=129occurred 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 4 procedures, 189 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.9s, OverallIterations: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 108 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 98 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 158 IncrementalHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 0 mSDtfsCounter, 158 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=208occurred in iteration=0, InterpolantAutomatonStates: 5, 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, 0.2s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 SizeOfPredicates, 0 NumberOfNonLiveVariables, 118 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 11/16 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 4 procedures, 189 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.2s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 371 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 232 mSDsluCounter, 70 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 42 mSDsCounter, 67 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 846 IncrementalHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 67 mSolverCounterUnsat, 28 mSDtfsCounter, 846 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=246occurred in iteration=2, InterpolantAutomatonStates: 21, 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, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 309 SizeOfPredicates, 0 NumberOfNonLiveVariables, 134 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 12/15 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 21:25:46,305 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...