/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 PROGRAM_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_28-race_reach_45-escape_racing_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 04:35:01,654 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 04:35:01,714 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 04:35:01,718 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 04:35:01,719 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 04:35:01,719 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 04:35:01,719 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 04:35:01,738 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 04:35:01,738 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 04:35:01,739 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 04:35:01,739 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 04:35:01,739 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 04:35:01,740 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 04:35:01,740 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 04:35:01,741 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 04:35:01,741 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 04:35:01,741 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 04:35:01,742 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 04:35:01,742 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 04:35:01,742 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 04:35:01,742 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 04:35:01,743 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 04:35:01,743 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 04:35:01,744 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 04:35:01,744 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 04:35:01,744 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 04:35:01,745 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 04:35:01,745 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 04:35:01,745 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 04:35:01,745 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 04:35:01,746 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:35:01,746 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 04:35:01,746 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 04:35:01,746 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 04:35:01,747 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 04:35:01,747 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 04:35:01,747 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 04:35:01,747 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 04:35:01,748 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 04:35:01,748 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 04:35:01,748 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 04:35:01,748 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 04:35:01,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 04:35:01,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 04:35:01,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 04:35:01,980 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 04:35:01,982 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 04:35:01,984 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_28-race_reach_45-escape_racing_bound2.i [2023-08-04 04:35:03,294 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 04:35:03,529 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 04:35:03,530 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_28-race_reach_45-escape_racing_bound2.i [2023-08-04 04:35:03,545 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa35ce1a9/21b5dba2ecdd4580b6b00984632323a3/FLAGd46c5384d [2023-08-04 04:35:03,561 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa35ce1a9/21b5dba2ecdd4580b6b00984632323a3 [2023-08-04 04:35:03,564 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 04:35:03,565 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 04:35:03,566 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 04:35:03,566 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 04:35:03,573 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 04:35:03,574 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:35:03" (1/1) ... [2023-08-04 04:35:03,574 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52ed7a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:35:03, skipping insertion in model container [2023-08-04 04:35:03,575 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:35:03" (1/1) ... [2023-08-04 04:35:03,627 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 04:35:03,946 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_28-race_reach_45-escape_racing_bound2.i[30176,30189] [2023-08-04 04:35:03,962 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:35:03,979 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 04:35:04,009 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-04 04:35:04,011 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-04 04:35:04,019 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_28-race_reach_45-escape_racing_bound2.i[30176,30189] [2023-08-04 04:35:04,036 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:35:04,081 INFO L206 MainTranslator]: Completed translation [2023-08-04 04:35:04,081 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:35:04 WrapperNode [2023-08-04 04:35:04,081 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 04:35:04,082 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 04:35:04,083 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 04:35:04,083 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 04:35:04,088 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:35:04" (1/1) ... [2023-08-04 04:35:04,106 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:35:04" (1/1) ... [2023-08-04 04:35:04,123 INFO L138 Inliner]: procedures = 170, calls = 45, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 86 [2023-08-04 04:35:04,124 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 04:35:04,124 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 04:35:04,125 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 04:35:04,125 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 04:35:04,132 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:35:04" (1/1) ... [2023-08-04 04:35:04,133 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:35:04" (1/1) ... [2023-08-04 04:35:04,135 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:35:04" (1/1) ... [2023-08-04 04:35:04,135 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:35:04" (1/1) ... [2023-08-04 04:35:04,146 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:35:04" (1/1) ... [2023-08-04 04:35:04,169 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:35:04" (1/1) ... [2023-08-04 04:35:04,171 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:35:04" (1/1) ... [2023-08-04 04:35:04,172 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:35:04" (1/1) ... [2023-08-04 04:35:04,174 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 04:35:04,175 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 04:35:04,175 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 04:35:04,175 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 04:35:04,181 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:35:04" (1/1) ... [2023-08-04 04:35:04,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:35:04,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:35:04,206 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-04 04:35:04,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-04 04:35:04,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 04:35:04,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 04:35:04,237 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-04 04:35:04,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 04:35:04,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 04:35:04,238 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-04 04:35:04,238 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-04 04:35:04,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 04:35:04,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 04:35:04,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 04:35:04,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 04:35:04,240 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 04:35:04,356 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 04:35:04,358 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 04:35:04,542 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 04:35:04,548 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 04:35:04,548 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-04 04:35:04,550 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:35:04 BoogieIcfgContainer [2023-08-04 04:35:04,551 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 04:35:04,553 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 04:35:04,553 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 04:35:04,555 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 04:35:04,556 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 04:35:03" (1/3) ... [2023-08-04 04:35:04,556 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c852647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:35:04, skipping insertion in model container [2023-08-04 04:35:04,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:35:04" (2/3) ... [2023-08-04 04:35:04,557 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c852647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:35:04, skipping insertion in model container [2023-08-04 04:35:04,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:35:04" (3/3) ... [2023-08-04 04:35:04,558 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_28-race_reach_45-escape_racing_bound2.i [2023-08-04 04:35:04,565 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 04:35:04,573 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 04:35:04,574 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 04:35:04,574 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 04:35:04,641 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-04 04:35:04,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 116 transitions, 240 flow [2023-08-04 04:35:04,720 INFO L124 PetriNetUnfolderBase]: 17/153 cut-off events. [2023-08-04 04:35:04,721 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 04:35:04,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 153 events. 17/153 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 376 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 75. Up to 4 conditions per place. [2023-08-04 04:35:04,727 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 116 transitions, 240 flow [2023-08-04 04:35:04,731 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 111 transitions, 227 flow [2023-08-04 04:35:04,734 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:35:04,741 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 111 transitions, 227 flow [2023-08-04 04:35:04,743 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 103 places, 111 transitions, 227 flow [2023-08-04 04:35:04,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 111 transitions, 227 flow [2023-08-04 04:35:04,772 INFO L124 PetriNetUnfolderBase]: 16/148 cut-off events. [2023-08-04 04:35:04,773 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:35:04,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 148 events. 16/148 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 359 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 75. Up to 4 conditions per place. [2023-08-04 04:35:04,778 INFO L119 LiptonReduction]: Number of co-enabled transitions 2838 [2023-08-04 04:35:07,998 INFO L134 LiptonReduction]: Checked pairs total: 4947 [2023-08-04 04:35:07,999 INFO L136 LiptonReduction]: Total number of compositions: 93 [2023-08-04 04:35:08,010 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:35:08,016 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;@7dd9958e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:35:08,016 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:35:08,019 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:35:08,019 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-04 04:35:08,019 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:35:08,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:35:08,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 04:35:08,020 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:35:08,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:35:08,023 INFO L85 PathProgramCache]: Analyzing trace with hash 13588385, now seen corresponding path program 1 times [2023-08-04 04:35:08,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:35:08,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929993790] [2023-08-04 04:35:08,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:35:08,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:35:08,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:35:08,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:35:08,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:35:08,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929993790] [2023-08-04 04:35:08,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929993790] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:35:08,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:35:08,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:35:08,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343262745] [2023-08-04 04:35:08,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:35:08,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:35:08,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:35:08,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:35:08,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:35:08,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 209 [2023-08-04 04:35:08,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 32 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:35:08,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:35:08,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 209 [2023-08-04 04:35:08,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:35:08,418 INFO L124 PetriNetUnfolderBase]: 72/186 cut-off events. [2023-08-04 04:35:08,418 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:35:08,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 186 events. 72/186 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 775 event pairs, 0 based on Foata normal form. 9/175 useless extension candidates. Maximal degree in co-relation 334. Up to 153 conditions per place. [2023-08-04 04:35:08,424 INFO L140 encePairwiseOnDemand]: 197/209 looper letters, 23 selfloop transitions, 2 changer transitions 6/33 dead transitions. [2023-08-04 04:35:08,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 33 transitions, 129 flow [2023-08-04 04:35:08,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:35:08,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:35:08,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 339 transitions. [2023-08-04 04:35:08,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5406698564593302 [2023-08-04 04:35:08,444 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 339 transitions. [2023-08-04 04:35:08,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 339 transitions. [2023-08-04 04:35:08,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:35:08,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 339 transitions. [2023-08-04 04:35:08,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:35:08,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:35:08,459 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:35:08,460 INFO L175 Difference]: Start difference. First operand has 27 places, 32 transitions, 69 flow. Second operand 3 states and 339 transitions. [2023-08-04 04:35:08,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 33 transitions, 129 flow [2023-08-04 04:35:08,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 33 transitions, 129 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:35:08,464 INFO L231 Difference]: Finished difference. Result has 29 places, 18 transitions, 47 flow [2023-08-04 04:35:08,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=29, PETRI_TRANSITIONS=18} [2023-08-04 04:35:08,468 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2023-08-04 04:35:08,468 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 18 transitions, 47 flow [2023-08-04 04:35:08,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:35:08,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:35:08,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:35:08,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 04:35:08,470 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:35:08,470 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:35:08,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1252021238, now seen corresponding path program 1 times [2023-08-04 04:35:08,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:35:08,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941370111] [2023-08-04 04:35:08,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:35:08,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:35:08,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:35:08,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:35:08,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:35:08,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941370111] [2023-08-04 04:35:08,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941370111] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:35:08,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843159899] [2023-08-04 04:35:08,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:35:08,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:35:08,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:35:08,544 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:35:08,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 04:35:08,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:35:08,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:35:08,650 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:35:08,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:35:08,692 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:35:08,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:35:08,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843159899] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:35:08,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:35:08,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 04:35:08,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253467927] [2023-08-04 04:35:08,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:35:08,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:35:08,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:35:08,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:35:08,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:35:08,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 209 [2023-08-04 04:35:08,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 18 transitions, 47 flow. Second operand has 5 states, 5 states have (on average 99.2) internal successors, (496), 5 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:35:08,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:35:08,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 209 [2023-08-04 04:35:08,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:35:08,771 INFO L124 PetriNetUnfolderBase]: 18/52 cut-off events. [2023-08-04 04:35:08,772 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-04 04:35:08,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 52 events. 18/52 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 96 event pairs, 0 based on Foata normal form. 10/62 useless extension candidates. Maximal degree in co-relation 116. Up to 38 conditions per place. [2023-08-04 04:35:08,773 INFO L140 encePairwiseOnDemand]: 206/209 looper letters, 0 selfloop transitions, 0 changer transitions 25/25 dead transitions. [2023-08-04 04:35:08,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 25 transitions, 105 flow [2023-08-04 04:35:08,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:35:08,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:35:08,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 412 transitions. [2023-08-04 04:35:08,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49282296650717705 [2023-08-04 04:35:08,779 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 412 transitions. [2023-08-04 04:35:08,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 412 transitions. [2023-08-04 04:35:08,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:35:08,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 412 transitions. [2023-08-04 04:35:08,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:35:08,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 209.0) internal successors, (1045), 5 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:35:08,790 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 209.0) internal successors, (1045), 5 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:35:08,790 INFO L175 Difference]: Start difference. First operand has 29 places, 18 transitions, 47 flow. Second operand 4 states and 412 transitions. [2023-08-04 04:35:08,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 25 transitions, 105 flow [2023-08-04 04:35:08,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 25 transitions, 99 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-04 04:35:08,791 INFO L231 Difference]: Finished difference. Result has 21 places, 0 transitions, 0 flow [2023-08-04 04:35:08,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=33, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=21, PETRI_TRANSITIONS=0} [2023-08-04 04:35:08,792 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -6 predicate places. [2023-08-04 04:35:08,792 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 0 transitions, 0 flow [2023-08-04 04:35:08,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.2) internal successors, (496), 5 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:35:08,795 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-04 04:35:08,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 04:35:09,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:35:09,001 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-04 04:35:09,003 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2023-08-04 04:35:09,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 116 transitions, 240 flow [2023-08-04 04:35:09,020 INFO L124 PetriNetUnfolderBase]: 17/153 cut-off events. [2023-08-04 04:35:09,021 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 04:35:09,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 153 events. 17/153 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 376 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 75. Up to 4 conditions per place. [2023-08-04 04:35:09,021 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 116 transitions, 240 flow [2023-08-04 04:35:09,022 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 111 transitions, 227 flow [2023-08-04 04:35:09,022 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:35:09,022 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 111 transitions, 227 flow [2023-08-04 04:35:09,023 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 103 places, 111 transitions, 227 flow [2023-08-04 04:35:09,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 111 transitions, 227 flow [2023-08-04 04:35:09,034 INFO L124 PetriNetUnfolderBase]: 16/148 cut-off events. [2023-08-04 04:35:09,034 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:35:09,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 148 events. 16/148 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 359 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 75. Up to 4 conditions per place. [2023-08-04 04:35:09,036 INFO L119 LiptonReduction]: Number of co-enabled transitions 2838 [2023-08-04 04:35:12,078 INFO L134 LiptonReduction]: Checked pairs total: 5376 [2023-08-04 04:35:12,078 INFO L136 LiptonReduction]: Total number of compositions: 93 [2023-08-04 04:35:12,080 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 04:35:12,081 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;@7dd9958e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:35:12,081 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:35:12,084 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:35:12,084 INFO L124 PetriNetUnfolderBase]: 2/23 cut-off events. [2023-08-04 04:35:12,084 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:35:12,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:35:12,085 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 04:35:12,085 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:35:12,085 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:35:12,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1365689354, now seen corresponding path program 1 times [2023-08-04 04:35:12,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:35:12,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188580914] [2023-08-04 04:35:12,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:35:12,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:35:12,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:35:12,137 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 04:35:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:35:12,181 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 04:35:12,182 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 04:35:12,182 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-04 04:35:12,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 04:35:12,182 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:35:12,183 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-04 04:35:12,184 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 04:35:12,184 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 04:35:12,210 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-04 04:35:12,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 151 transitions, 320 flow [2023-08-04 04:35:12,249 INFO L124 PetriNetUnfolderBase]: 31/251 cut-off events. [2023-08-04 04:35:12,250 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 04:35:12,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 251 events. 31/251 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 762 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 155. Up to 8 conditions per place. [2023-08-04 04:35:12,252 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 151 transitions, 320 flow [2023-08-04 04:35:12,254 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 151 transitions, 320 flow [2023-08-04 04:35:12,254 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:35:12,255 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 151 transitions, 320 flow [2023-08-04 04:35:12,255 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 151 transitions, 320 flow [2023-08-04 04:35:12,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 151 transitions, 320 flow [2023-08-04 04:35:12,278 INFO L124 PetriNetUnfolderBase]: 31/251 cut-off events. [2023-08-04 04:35:12,279 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 04:35:12,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 251 events. 31/251 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 762 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 155. Up to 8 conditions per place. [2023-08-04 04:35:12,286 INFO L119 LiptonReduction]: Number of co-enabled transitions 8580 [2023-08-04 04:35:15,344 INFO L134 LiptonReduction]: Checked pairs total: 17032 [2023-08-04 04:35:15,344 INFO L136 LiptonReduction]: Total number of compositions: 115 [2023-08-04 04:35:15,346 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:35:15,347 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;@7dd9958e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:35:15,347 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:35:15,348 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:35:15,349 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-04 04:35:15,349 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:35:15,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:35:15,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 04:35:15,349 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:35:15,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:35:15,349 INFO L85 PathProgramCache]: Analyzing trace with hash 25715855, now seen corresponding path program 1 times [2023-08-04 04:35:15,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:35:15,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755066267] [2023-08-04 04:35:15,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:35:15,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:35:15,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:35:15,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:35:15,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:35:15,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755066267] [2023-08-04 04:35:15,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755066267] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:35:15,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:35:15,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:35:15,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539921340] [2023-08-04 04:35:15,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:35:15,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:35:15,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:35:15,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:35:15,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:35:15,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 266 [2023-08-04 04:35:15,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 55 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:35:15,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:35:15,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 266 [2023-08-04 04:35:15,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:35:15,744 INFO L124 PetriNetUnfolderBase]: 1833/3121 cut-off events. [2023-08-04 04:35:15,744 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2023-08-04 04:35:15,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6169 conditions, 3121 events. 1833/3121 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 17172 event pairs, 1704 based on Foata normal form. 450/3232 useless extension candidates. Maximal degree in co-relation 4454. Up to 2974 conditions per place. [2023-08-04 04:35:15,754 INFO L140 encePairwiseOnDemand]: 249/266 looper letters, 34 selfloop transitions, 2 changer transitions 10/52 dead transitions. [2023-08-04 04:35:15,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 52 transitions, 210 flow [2023-08-04 04:35:15,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:35:15,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:35:15,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2023-08-04 04:35:15,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5513784461152882 [2023-08-04 04:35:15,756 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2023-08-04 04:35:15,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2023-08-04 04:35:15,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:35:15,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2023-08-04 04:35:15,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:35:15,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:35:15,760 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:35:15,760 INFO L175 Difference]: Start difference. First operand has 44 places, 55 transitions, 128 flow. Second operand 3 states and 440 transitions. [2023-08-04 04:35:15,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 52 transitions, 210 flow [2023-08-04 04:35:15,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 52 transitions, 210 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:35:15,763 INFO L231 Difference]: Finished difference. Result has 47 places, 32 transitions, 82 flow [2023-08-04 04:35:15,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=47, PETRI_TRANSITIONS=32} [2023-08-04 04:35:15,764 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 3 predicate places. [2023-08-04 04:35:15,764 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 32 transitions, 82 flow [2023-08-04 04:35:15,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:35:15,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:35:15,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:35:15,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-04 04:35:15,765 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:35:15,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:35:15,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1042243313, now seen corresponding path program 1 times [2023-08-04 04:35:15,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:35:15,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187762443] [2023-08-04 04:35:15,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:35:15,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:35:15,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:35:15,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:35:15,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:35:15,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187762443] [2023-08-04 04:35:15,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187762443] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:35:15,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572811519] [2023-08-04 04:35:15,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:35:15,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:35:15,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:35:15,807 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:35:15,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 04:35:15,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:35:15,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:35:15,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:35:15,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:35:15,912 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:35:15,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:35:15,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572811519] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:35:15,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:35:15,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 04:35:15,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212219601] [2023-08-04 04:35:15,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:35:15,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:35:15,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:35:15,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:35:15,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:35:15,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 266 [2023-08-04 04:35:15,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 32 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 126.2) internal successors, (631), 5 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:35:15,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:35:15,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 266 [2023-08-04 04:35:15,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:35:16,118 INFO L124 PetriNetUnfolderBase]: 904/1549 cut-off events. [2023-08-04 04:35:16,118 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-04 04:35:16,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3264 conditions, 1549 events. 904/1549 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 7987 event pairs, 80 based on Foata normal form. 10/1558 useless extension candidates. Maximal degree in co-relation 332. Up to 1005 conditions per place. [2023-08-04 04:35:16,126 INFO L140 encePairwiseOnDemand]: 262/266 looper letters, 50 selfloop transitions, 3 changer transitions 1/60 dead transitions. [2023-08-04 04:35:16,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 60 transitions, 246 flow [2023-08-04 04:35:16,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:35:16,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:35:16,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 551 transitions. [2023-08-04 04:35:16,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2023-08-04 04:35:16,128 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 551 transitions. [2023-08-04 04:35:16,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 551 transitions. [2023-08-04 04:35:16,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:35:16,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 551 transitions. [2023-08-04 04:35:16,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.75) internal successors, (551), 4 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:35:16,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 266.0) internal successors, (1330), 5 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:35:16,132 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 266.0) internal successors, (1330), 5 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:35:16,132 INFO L175 Difference]: Start difference. First operand has 47 places, 32 transitions, 82 flow. Second operand 4 states and 551 transitions. [2023-08-04 04:35:16,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 60 transitions, 246 flow [2023-08-04 04:35:16,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 60 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:35:16,136 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 94 flow [2023-08-04 04:35:16,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2023-08-04 04:35:16,139 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -1 predicate places. [2023-08-04 04:35:16,140 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 94 flow [2023-08-04 04:35:16,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 126.2) internal successors, (631), 5 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:35:16,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:35:16,141 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-04 04:35:16,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 04:35:16,347 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 [2023-08-04 04:35:16,347 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:35:16,348 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:35:16,348 INFO L85 PathProgramCache]: Analyzing trace with hash 163786994, now seen corresponding path program 1 times [2023-08-04 04:35:16,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:35:16,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835838976] [2023-08-04 04:35:16,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:35:16,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:35:16,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:35:16,538 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:35:16,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:35:16,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835838976] [2023-08-04 04:35:16,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835838976] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:35:16,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829120656] [2023-08-04 04:35:16,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:35:16,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:35:16,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:35:16,541 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:35:16,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 04:35:16,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:35:16,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-04 04:35:16,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:35:16,638 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-08-04 04:35:16,651 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-04 04:35:16,672 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-04 04:35:16,682 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:35:16,682 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:35:16,700 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_100 (Array Int Int))) (= 0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id~0#1.base| v_ArrVal_100) |c_ULTIMATE.start_main_~#i~0#1.base|) |c_ULTIMATE.start_main_~#i~0#1.offset|))) is different from false [2023-08-04 04:35:16,713 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 5 not checked. [2023-08-04 04:35:16,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829120656] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:35:16,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:35:16,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 3 [2023-08-04 04:35:16,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326071031] [2023-08-04 04:35:16,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:35:16,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:35:16,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:35:16,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:35:16,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=7, Unknown=1, NotChecked=4, Total=20 [2023-08-04 04:35:16,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 266 [2023-08-04 04:35:16,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 96.0) internal successors, (480), 5 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:35:16,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:35:16,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 266 [2023-08-04 04:35:16,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:35:16,864 INFO L124 PetriNetUnfolderBase]: 804/1387 cut-off events. [2023-08-04 04:35:16,864 INFO L125 PetriNetUnfolderBase]: For 988/988 co-relation queries the response was YES. [2023-08-04 04:35:16,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3284 conditions, 1387 events. 804/1387 cut-off events. For 988/988 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 6696 event pairs, 324 based on Foata normal form. 12/1397 useless extension candidates. Maximal degree in co-relation 2478. Up to 1203 conditions per place. [2023-08-04 04:35:16,871 INFO L140 encePairwiseOnDemand]: 262/266 looper letters, 37 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2023-08-04 04:35:16,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 45 transitions, 222 flow [2023-08-04 04:35:16,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:35:16,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:35:16,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 318 transitions. [2023-08-04 04:35:16,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39849624060150374 [2023-08-04 04:35:16,873 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 318 transitions. [2023-08-04 04:35:16,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 318 transitions. [2023-08-04 04:35:16,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:35:16,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 318 transitions. [2023-08-04 04:35:16,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:35:16,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:35:16,876 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:35:16,876 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 94 flow. Second operand 3 states and 318 transitions. [2023-08-04 04:35:16,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 45 transitions, 222 flow [2023-08-04 04:35:16,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 45 transitions, 210 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-04 04:35:16,878 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 106 flow [2023-08-04 04:35:16,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2023-08-04 04:35:16,879 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -1 predicate places. [2023-08-04 04:35:16,879 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 106 flow [2023-08-04 04:35:16,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.0) internal successors, (480), 5 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:35:16,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:35:16,880 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:35:16,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 04:35:17,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:35:17,086 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:35:17,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:35:17,086 INFO L85 PathProgramCache]: Analyzing trace with hash 684946488, now seen corresponding path program 1 times [2023-08-04 04:35:17,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:35:17,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995083295] [2023-08-04 04:35:17,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:35:17,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:35:17,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:35:17,224 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:35:17,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:35:17,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995083295] [2023-08-04 04:35:17,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995083295] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:35:17,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:35:17,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 04:35:17,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118713396] [2023-08-04 04:35:17,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:35:17,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:35:17,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:35:17,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:35:17,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:35:17,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 266 [2023-08-04 04:35:17,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 106 flow. Second operand has 5 states, 5 states have (on average 116.6) internal successors, (583), 5 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:35:17,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:35:17,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 266 [2023-08-04 04:35:17,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:35:17,414 INFO L124 PetriNetUnfolderBase]: 389/811 cut-off events. [2023-08-04 04:35:17,414 INFO L125 PetriNetUnfolderBase]: For 625/625 co-relation queries the response was YES. [2023-08-04 04:35:17,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2045 conditions, 811 events. 389/811 cut-off events. For 625/625 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3931 event pairs, 155 based on Foata normal form. 157/967 useless extension candidates. Maximal degree in co-relation 1106. Up to 450 conditions per place. [2023-08-04 04:35:17,419 INFO L140 encePairwiseOnDemand]: 254/266 looper letters, 39 selfloop transitions, 12 changer transitions 0/55 dead transitions. [2023-08-04 04:35:17,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 55 transitions, 273 flow [2023-08-04 04:35:17,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:35:17,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:35:17,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 508 transitions. [2023-08-04 04:35:17,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774436090225564 [2023-08-04 04:35:17,421 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 508 transitions. [2023-08-04 04:35:17,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 508 transitions. [2023-08-04 04:35:17,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:35:17,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 508 transitions. [2023-08-04 04:35:17,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 127.0) internal successors, (508), 4 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) [2023-08-04 04:35:17,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 266.0) internal successors, (1330), 5 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:35:17,425 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 266.0) internal successors, (1330), 5 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:35:17,425 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 106 flow. Second operand 4 states and 508 transitions. [2023-08-04 04:35:17,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 55 transitions, 273 flow [2023-08-04 04:35:17,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 55 transitions, 270 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:35:17,427 INFO L231 Difference]: Finished difference. Result has 46 places, 40 transitions, 162 flow [2023-08-04 04:35:17,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=162, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2023-08-04 04:35:17,428 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 2 predicate places. [2023-08-04 04:35:17,428 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 162 flow [2023-08-04 04:35:17,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 116.6) internal successors, (583), 5 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:35:17,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:35:17,429 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:35:17,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-04 04:35:17,429 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:35:17,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:35:17,429 INFO L85 PathProgramCache]: Analyzing trace with hash -606307057, now seen corresponding path program 1 times [2023-08-04 04:35:17,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:35:17,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789348283] [2023-08-04 04:35:17,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:35:17,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:35:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:35:17,444 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 04:35:17,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:35:17,462 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 04:35:17,462 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 04:35:17,462 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-04 04:35:17,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-04 04:35:17,462 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-04 04:35:17,463 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE (1/2) [2023-08-04 04:35:17,465 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 04:35:17,465 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 04:35:17,516 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 04:35:17 BasicIcfg [2023-08-04 04:35:17,516 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 04:35:17,516 INFO L158 Benchmark]: Toolchain (without parser) took 13951.42ms. Allocated memory was 348.1MB in the beginning and 671.1MB in the end (delta: 323.0MB). Free memory was 290.0MB in the beginning and 634.9MB in the end (delta: -344.8MB). Peak memory consumption was 314.5MB. Max. memory is 16.0GB. [2023-08-04 04:35:17,517 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 348.1MB. Free memory was 300.9MB in the beginning and 300.8MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 04:35:17,517 INFO L158 Benchmark]: CACSL2BoogieTranslator took 515.77ms. Allocated memory is still 348.1MB. Free memory was 289.8MB in the beginning and 270.0MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-04 04:35:17,517 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.53ms. Allocated memory is still 348.1MB. Free memory was 270.0MB in the beginning and 267.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 04:35:17,517 INFO L158 Benchmark]: Boogie Preprocessor took 49.64ms. Allocated memory was 348.1MB in the beginning and 557.8MB in the end (delta: 209.7MB). Free memory was 267.8MB in the beginning and 527.8MB in the end (delta: -260.0MB). Peak memory consumption was 8.3MB. Max. memory is 16.0GB. [2023-08-04 04:35:17,517 INFO L158 Benchmark]: RCFGBuilder took 375.87ms. Allocated memory is still 557.8MB. Free memory was 527.8MB in the beginning and 512.2MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-04 04:35:17,518 INFO L158 Benchmark]: TraceAbstraction took 12963.39ms. Allocated memory was 557.8MB in the beginning and 671.1MB in the end (delta: 113.2MB). Free memory was 511.4MB in the beginning and 634.9MB in the end (delta: -123.5MB). Peak memory consumption was 323.0MB. Max. memory is 16.0GB. [2023-08-04 04:35:17,519 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 348.1MB. Free memory was 300.9MB in the beginning and 300.8MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 515.77ms. Allocated memory is still 348.1MB. Free memory was 289.8MB in the beginning and 270.0MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 41.53ms. Allocated memory is still 348.1MB. Free memory was 270.0MB in the beginning and 267.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 49.64ms. Allocated memory was 348.1MB in the beginning and 557.8MB in the end (delta: 209.7MB). Free memory was 267.8MB in the beginning and 527.8MB in the end (delta: -260.0MB). Peak memory consumption was 8.3MB. Max. memory is 16.0GB. * RCFGBuilder took 375.87ms. Allocated memory is still 557.8MB. Free memory was 527.8MB in the beginning and 512.2MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 12963.39ms. Allocated memory was 557.8MB in the beginning and 671.1MB in the end (delta: 113.2MB). Free memory was 511.4MB in the beginning and 634.9MB in the end (delta: -123.5MB). Peak memory consumption was 323.0MB. 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: 3.3s, 103 PlacesBefore, 27 PlacesAfterwards, 111 TransitionsBefore, 32 TransitionsAfterwards, 2838 CoEnabledTransitionPairs, 6 FixpointIterations, 33 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 3 ChoiceCompositions, 93 TotalNumberOfCompositions, 4947 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2669, independent: 2505, independent conditional: 0, independent unconditional: 2505, dependent: 164, dependent conditional: 0, dependent unconditional: 164, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1542, independent: 1503, independent conditional: 0, independent unconditional: 1503, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2669, independent: 1002, independent conditional: 0, independent unconditional: 1002, dependent: 125, dependent conditional: 0, dependent unconditional: 125, unknown: 1542, unknown conditional: 0, unknown unconditional: 1542] , Statistics on independence cache: Total cache size (in pairs): 80, Positive cache size: 60, Positive conditional cache size: 0, Positive unconditional cache size: 60, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1s, 103 PlacesBefore, 27 PlacesAfterwards, 111 TransitionsBefore, 32 TransitionsAfterwards, 2838 CoEnabledTransitionPairs, 7 FixpointIterations, 33 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 3 ChoiceCompositions, 93 TotalNumberOfCompositions, 5376 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2912, independent: 2720, independent conditional: 0, independent unconditional: 2720, dependent: 192, dependent conditional: 0, dependent unconditional: 192, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1545, independent: 1509, independent conditional: 0, independent unconditional: 1509, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2912, independent: 1211, independent conditional: 0, independent unconditional: 1211, dependent: 156, dependent conditional: 0, dependent unconditional: 156, unknown: 1545, unknown conditional: 0, unknown unconditional: 1545] , Statistics on independence cache: Total cache size (in pairs): 82, Positive cache size: 66, Positive conditional cache size: 0, Positive unconditional cache size: 66, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1s, 137 PlacesBefore, 44 PlacesAfterwards, 151 TransitionsBefore, 55 TransitionsAfterwards, 8580 CoEnabledTransitionPairs, 6 FixpointIterations, 33 TrivialSequentialCompositions, 62 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 17 ConcurrentYvCompositions, 3 ChoiceCompositions, 115 TotalNumberOfCompositions, 17032 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7125, independent: 6850, independent conditional: 0, independent unconditional: 6850, dependent: 275, dependent conditional: 0, dependent unconditional: 275, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4177, independent: 4116, independent conditional: 0, independent unconditional: 4116, dependent: 61, dependent conditional: 0, dependent unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7125, independent: 2734, independent conditional: 0, independent unconditional: 2734, dependent: 214, dependent conditional: 0, dependent unconditional: 214, unknown: 4177, unknown conditional: 0, unknown unconditional: 4177] , Statistics on independence cache: Total cache size (in pairs): 176, Positive cache size: 151, Positive conditional cache size: 0, Positive unconditional cache size: 151, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 691]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L696] 0 pthread_mutex_t __global_lock = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L697] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L698] 0 pthread_mutex_t mutex2 = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L707] 0 pthread_t id[2]; [L708] 0 int i = 0; [L709] 0 int asdf=0; VAL [__global_lock={3:0}, asdf=0, i={7:0}, id={6:0}, mutex1={4:0}, mutex2={5:0}] [L709] COND TRUE 0 asdf<2 [L709] FCALL, FORK 0 pthread_create(&id[asdf], ((void *)0), t_fun, (void *) &i) VAL [__global_lock={3:0}, arg={7:0}, asdf=0, i={7:0}, id={6:0}, mutex1={4:0}, mutex2={5:0}, pthread_create(&id[asdf], ((void *)0), t_fun, (void *) &i)=-1] [L709] 0 asdf++ VAL [__global_lock={3:0}, arg={7:0}, asdf=1, i={7:0}, id={6:0}, mutex1={4:0}, mutex2={5:0}] [L709] COND TRUE 0 asdf<2 [L700] 1 int *p = (int *) arg; [L702] EXPR 1 \read(*p) VAL [\read(*p)=0, __global_lock={3:0}, arg={7:0}, arg={7:0}, mutex1={4:0}, mutex2={5:0}, p={7:0}] [L702] 1 (*p)++ [L709] FCALL, FORK 0 pthread_create(&id[asdf], ((void *)0), t_fun, (void *) &i) VAL [__global_lock={3:0}, arg={7:0}, arg={7:0}, asdf=1, i={7:0}, id={6:0}, mutex1={4:0}, mutex2={5:0}, p={7:0}, pthread_create(&id[asdf], ((void *)0), t_fun, (void *) &i)=0] [L709] 0 asdf++ VAL [__global_lock={3:0}, arg={7:0}, arg={7:0}, asdf=2, i={7:0}, id={6:0}, mutex1={4:0}, mutex2={5:0}, p={7:0}] [L709] COND FALSE 0 !(asdf<2) [L711] EXPR 0 \read(i) [L711] CALL 0 __VERIFIER_assert((i) == 0) [L691] COND TRUE 0 !(cond) [L691] 0 reach_error() VAL [\old(cond)=0, __global_lock={3:0}, arg={7:0}, arg={7:0}, cond=0, mutex1={4:0}, mutex2={5:0}, p={7:0}] - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 133 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 73 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 50 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 89 IncrementalHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 8 mSDtfsCounter, 89 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=0, InterpolantAutomatonStates: 7, 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, 0.3s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 47 SizeOfPredicates, 0 NumberOfNonLiveVariables, 139 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 161 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.3s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 206 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 148 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 70 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 410 IncrementalHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 8 mSDtfsCounter, 410 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=162occurred in iteration=4, InterpolantAutomatonStates: 14, 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, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 73 ConstructedInterpolants, 5 QuantifiedInterpolants, 458 SizeOfPredicates, 1 NumberOfNonLiveVariables, 298 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 9/27 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 1 thread instances CFG has 3 procedures, 133 locations, 2 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: 3.2s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred 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 RESULT: Ultimate proved your program to be incorrect! [2023-08-04 04:35:17,571 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...