/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_21-deref_read_racing_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 21:24:23,588 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 21:24:23,634 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 21:24:23,638 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 21:24:23,638 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 21:24:23,638 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 21:24:23,639 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 21:24:23,656 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 21:24:23,657 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 21:24:23,657 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 21:24:23,657 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 21:24:23,658 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 21:24:23,658 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 21:24:23,658 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 21:24:23,659 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 21:24:23,659 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 21:24:23,659 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 21:24:23,660 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 21:24:23,660 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 21:24:23,660 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 21:24:23,660 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 21:24:23,668 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 21:24:23,668 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 21:24:23,669 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 21:24:23,669 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 21:24:23,669 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 21:24:23,670 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 21:24:23,670 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 21:24:23,670 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 21:24:23,670 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 21:24:23,671 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 21:24:23,671 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 21:24:23,671 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 21:24:23,672 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 21:24:23,672 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 21:24:23,672 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 21:24:23,672 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 21:24:23,673 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 21:24:23,673 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 21:24:23,673 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 21:24:23,673 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 21:24:23,674 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-03 21:24:23,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 21:24:23,889 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 21:24:23,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 21:24:23,892 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 21:24:23,893 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 21:24:23,894 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_21-deref_read_racing_bound2.i [2023-08-03 21:24:25,131 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 21:24:25,349 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 21:24:25,350 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_21-deref_read_racing_bound2.i [2023-08-03 21:24:25,363 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/746ee66a6/5881818955954c3a832186a1b583d4cb/FLAG175efd96c [2023-08-03 21:24:25,376 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/746ee66a6/5881818955954c3a832186a1b583d4cb [2023-08-03 21:24:25,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 21:24:25,379 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 21:24:25,380 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 21:24:25,380 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 21:24:25,383 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 21:24:25,384 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 09:24:25" (1/1) ... [2023-08-03 21:24:25,385 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52cc3913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:24:25, skipping insertion in model container [2023-08-03 21:24:25,385 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 09:24:25" (1/1) ... [2023-08-03 21:24:25,430 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 21:24:25,716 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_21-deref_read_racing_bound2.i[30176,30189] [2023-08-03 21:24:25,733 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 21:24:25,745 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 21:24:25,772 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-03 21:24:25,774 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-03 21:24:25,788 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_21-deref_read_racing_bound2.i[30176,30189] [2023-08-03 21:24:25,804 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 21:24:25,842 INFO L206 MainTranslator]: Completed translation [2023-08-03 21:24:25,844 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:24:25 WrapperNode [2023-08-03 21:24:25,844 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 21:24:25,845 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 21:24:25,846 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 21:24:25,846 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 21:24:25,852 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:24:25" (1/1) ... [2023-08-03 21:24:25,866 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:24:25" (1/1) ... [2023-08-03 21:24:25,886 INFO L138 Inliner]: procedures = 170, calls = 35, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2023-08-03 21:24:25,886 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 21:24:25,889 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 21:24:25,889 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 21:24:25,889 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 21:24:25,897 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:24:25" (1/1) ... [2023-08-03 21:24:25,897 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:24:25" (1/1) ... [2023-08-03 21:24:25,905 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:24:25" (1/1) ... [2023-08-03 21:24:25,905 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:24:25" (1/1) ... [2023-08-03 21:24:25,916 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:24:25" (1/1) ... [2023-08-03 21:24:25,919 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:24:25" (1/1) ... [2023-08-03 21:24:25,921 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:24:25" (1/1) ... [2023-08-03 21:24:25,922 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:24:25" (1/1) ... [2023-08-03 21:24:25,924 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 21:24:25,925 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 21:24:25,925 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 21:24:25,925 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 21:24:25,926 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:24:25" (1/1) ... [2023-08-03 21:24:25,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 21:24:25,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:24:25,961 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 21:24:25,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 21:24:26,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 21:24:26,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 21:24:26,004 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 21:24:26,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 21:24:26,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 21:24:26,005 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-03 21:24:26,005 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-03 21:24:26,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 21:24:26,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 21:24:26,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 21:24:26,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 21:24:26,008 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 21:24:26,125 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 21:24:26,127 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 21:24:26,252 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 21:24:26,259 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 21:24:26,259 INFO L302 CfgBuilder]: Removed 9 assume(true) statements. [2023-08-03 21:24:26,261 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 09:24:26 BoogieIcfgContainer [2023-08-03 21:24:26,261 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 21:24:26,263 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 21:24:26,263 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 21:24:26,266 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 21:24:26,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 09:24:25" (1/3) ... [2023-08-03 21:24:26,267 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34fabdb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 09:24:26, skipping insertion in model container [2023-08-03 21:24:26,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:24:25" (2/3) ... [2023-08-03 21:24:26,267 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34fabdb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 09:24:26, skipping insertion in model container [2023-08-03 21:24:26,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 09:24:26" (3/3) ... [2023-08-03 21:24:26,268 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_28-race_reach_21-deref_read_racing_bound2.i [2023-08-03 21:24:26,275 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 21:24:26,282 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 21:24:26,282 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 21:24:26,282 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 21:24:26,341 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 21:24:26,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 97 transitions, 199 flow [2023-08-03 21:24:26,422 INFO L124 PetriNetUnfolderBase]: 14/125 cut-off events. [2023-08-03 21:24:26,422 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:24:26,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 125 events. 14/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 265 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 65. Up to 4 conditions per place. [2023-08-03 21:24:26,428 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 97 transitions, 199 flow [2023-08-03 21:24:26,432 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 97 transitions, 199 flow [2023-08-03 21:24:26,435 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:24:26,443 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 97 transitions, 199 flow [2023-08-03 21:24:26,445 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 97 transitions, 199 flow [2023-08-03 21:24:26,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 97 transitions, 199 flow [2023-08-03 21:24:26,496 INFO L124 PetriNetUnfolderBase]: 14/125 cut-off events. [2023-08-03 21:24:26,496 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:24:26,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 125 events. 14/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 265 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 65. Up to 4 conditions per place. [2023-08-03 21:24:26,501 INFO L119 LiptonReduction]: Number of co-enabled transitions 2176 [2023-08-03 21:24:29,061 INFO L134 LiptonReduction]: Checked pairs total: 3921 [2023-08-03 21:24:29,061 INFO L136 LiptonReduction]: Total number of compositions: 82 [2023-08-03 21:24:29,073 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 21:24:29,078 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;@28281334, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:24:29,079 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-03 21:24:29,083 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:24:29,084 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2023-08-03 21:24:29,084 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:24:29,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:24:29,085 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 21:24:29,085 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:24:29,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:24:29,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1609564972, now seen corresponding path program 1 times [2023-08-03 21:24:29,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:24:29,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722899590] [2023-08-03 21:24:29,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:24:29,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:24:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 21:24:29,194 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 21:24:29,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 21:24:29,243 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 21:24:29,245 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 21:24:29,246 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-03 21:24:29,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 21:24:29,248 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 21:24:29,254 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-03 21:24:29,256 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 21:24:29,256 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 21:24:29,289 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 21:24:29,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 130 transitions, 272 flow [2023-08-03 21:24:29,349 INFO L124 PetriNetUnfolderBase]: 24/191 cut-off events. [2023-08-03 21:24:29,349 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 21:24:29,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 191 events. 24/191 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 501 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 126. Up to 6 conditions per place. [2023-08-03 21:24:29,351 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 130 transitions, 272 flow [2023-08-03 21:24:29,353 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 130 transitions, 272 flow [2023-08-03 21:24:29,353 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:24:29,353 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 119 places, 130 transitions, 272 flow [2023-08-03 21:24:29,353 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 119 places, 130 transitions, 272 flow [2023-08-03 21:24:29,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 130 transitions, 272 flow [2023-08-03 21:24:29,379 INFO L124 PetriNetUnfolderBase]: 24/191 cut-off events. [2023-08-03 21:24:29,379 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 21:24:29,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 191 events. 24/191 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 501 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 126. Up to 6 conditions per place. [2023-08-03 21:24:29,389 INFO L119 LiptonReduction]: Number of co-enabled transitions 6464 [2023-08-03 21:24:31,905 INFO L134 LiptonReduction]: Checked pairs total: 13307 [2023-08-03 21:24:31,905 INFO L136 LiptonReduction]: Total number of compositions: 102 [2023-08-03 21:24:31,907 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 21:24:31,908 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;@28281334, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:24:31,908 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-03 21:24:31,913 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:24:31,913 INFO L124 PetriNetUnfolderBase]: 10/49 cut-off events. [2023-08-03 21:24:31,914 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 21:24:31,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:24:31,914 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 21:24:31,914 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:24:31,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:24:31,915 INFO L85 PathProgramCache]: Analyzing trace with hash 687650153, now seen corresponding path program 1 times [2023-08-03 21:24:31,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:24:31,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938851151] [2023-08-03 21:24:31,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:24:31,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:24:31,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:24:32,125 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:24:32,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:24:32,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938851151] [2023-08-03 21:24:32,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938851151] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:24:32,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113166538] [2023-08-03 21:24:32,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:24:32,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:24:32,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:24:32,128 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 21:24:32,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 21:24:32,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:24:32,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 21:24:32,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:24:32,246 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:24:32,246 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 21:24:32,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113166538] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:24:32,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 21:24:32,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 21:24:32,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114708594] [2023-08-03 21:24:32,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:24:32,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:24:32,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:24:32,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:24:32,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 21:24:32,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 232 [2023-08-03 21:24:32,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 48 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 107.6) internal successors, (538), 5 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:32,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:24:32,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 232 [2023-08-03 21:24:32,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:24:32,564 INFO L124 PetriNetUnfolderBase]: 1110/1870 cut-off events. [2023-08-03 21:24:32,564 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-03 21:24:32,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3733 conditions, 1870 events. 1110/1870 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 10378 event pairs, 0 based on Foata normal form. 282/2040 useless extension candidates. Maximal degree in co-relation 352. Up to 1606 conditions per place. [2023-08-03 21:24:32,569 INFO L140 encePairwiseOnDemand]: 214/232 looper letters, 0 selfloop transitions, 0 changer transitions 63/63 dead transitions. [2023-08-03 21:24:32,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 63 transitions, 248 flow [2023-08-03 21:24:32,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 21:24:32,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 21:24:32,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 620 transitions. [2023-08-03 21:24:32,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5344827586206896 [2023-08-03 21:24:32,583 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 620 transitions. [2023-08-03 21:24:32,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 620 transitions. [2023-08-03 21:24:32,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:24:32,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 620 transitions. [2023-08-03 21:24:32,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:32,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:32,596 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:32,598 INFO L175 Difference]: Start difference. First operand has 39 places, 48 transitions, 108 flow. Second operand 5 states and 620 transitions. [2023-08-03 21:24:32,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 63 transitions, 248 flow [2023-08-03 21:24:32,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 63 transitions, 247 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 21:24:32,602 INFO L231 Difference]: Finished difference. Result has 41 places, 0 transitions, 0 flow [2023-08-03 21:24:32,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=41, PETRI_TRANSITIONS=0} [2023-08-03 21:24:32,606 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-08-03 21:24:32,607 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 0 transitions, 0 flow [2023-08-03 21:24:32,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 107.6) internal successors, (538), 5 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:32,607 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-03 21:24:32,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 21:24:32,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:24:32,813 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 21:24:32,814 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE (1/2) [2023-08-03 21:24:32,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 130 transitions, 272 flow [2023-08-03 21:24:32,833 INFO L124 PetriNetUnfolderBase]: 24/191 cut-off events. [2023-08-03 21:24:32,833 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 21:24:32,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 191 events. 24/191 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 501 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 126. Up to 6 conditions per place. [2023-08-03 21:24:32,834 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 130 transitions, 272 flow [2023-08-03 21:24:32,836 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 130 transitions, 272 flow [2023-08-03 21:24:32,836 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:24:32,836 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 119 places, 130 transitions, 272 flow [2023-08-03 21:24:32,836 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 119 places, 130 transitions, 272 flow [2023-08-03 21:24:32,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 130 transitions, 272 flow [2023-08-03 21:24:32,852 INFO L124 PetriNetUnfolderBase]: 24/191 cut-off events. [2023-08-03 21:24:32,853 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 21:24:32,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 191 events. 24/191 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 501 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 126. Up to 6 conditions per place. [2023-08-03 21:24:32,857 INFO L119 LiptonReduction]: Number of co-enabled transitions 6464 [2023-08-03 21:24:35,303 INFO L134 LiptonReduction]: Checked pairs total: 13375 [2023-08-03 21:24:35,304 INFO L136 LiptonReduction]: Total number of compositions: 102 [2023-08-03 21:24:35,306 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 21:24:35,306 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;@28281334, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:24:35,306 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-03 21:24:35,308 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:24:35,308 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-03 21:24:35,308 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:24:35,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:24:35,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 21:24:35,309 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:24:35,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:24:35,309 INFO L85 PathProgramCache]: Analyzing trace with hash 23011240, now seen corresponding path program 1 times [2023-08-03 21:24:35,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:24:35,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168830353] [2023-08-03 21:24:35,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:24:35,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:24:35,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:24:35,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:24:35,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:24:35,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168830353] [2023-08-03 21:24:35,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168830353] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:24:35,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:24:35,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 21:24:35,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568504757] [2023-08-03 21:24:35,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:24:35,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:24:35,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:24:35,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:24:35,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:24:35,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 232 [2023-08-03 21:24:35,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 48 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:35,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:24:35,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 232 [2023-08-03 21:24:35,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:24:35,568 INFO L124 PetriNetUnfolderBase]: 1271/2276 cut-off events. [2023-08-03 21:24:35,568 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-08-03 21:24:35,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4405 conditions, 2276 events. 1271/2276 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 12793 event pairs, 560 based on Foata normal form. 320/2356 useless extension candidates. Maximal degree in co-relation 419. Up to 2062 conditions per place. [2023-08-03 21:24:35,578 INFO L140 encePairwiseOnDemand]: 215/232 looper letters, 34 selfloop transitions, 2 changer transitions 3/45 dead transitions. [2023-08-03 21:24:35,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 45 transitions, 178 flow [2023-08-03 21:24:35,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:24:35,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:24:35,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 380 transitions. [2023-08-03 21:24:35,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5459770114942529 [2023-08-03 21:24:35,580 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 380 transitions. [2023-08-03 21:24:35,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 380 transitions. [2023-08-03 21:24:35,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:24:35,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 380 transitions. [2023-08-03 21:24:35,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:35,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:35,584 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:35,584 INFO L175 Difference]: Start difference. First operand has 39 places, 48 transitions, 108 flow. Second operand 3 states and 380 transitions. [2023-08-03 21:24:35,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 45 transitions, 178 flow [2023-08-03 21:24:35,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 45 transitions, 176 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-03 21:24:35,587 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 82 flow [2023-08-03 21:24:35,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2023-08-03 21:24:35,588 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2023-08-03 21:24:35,589 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 82 flow [2023-08-03 21:24:35,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:35,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:24:35,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:24:35,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 21:24:35,589 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:24:35,590 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:24:35,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1225827268, now seen corresponding path program 1 times [2023-08-03 21:24:35,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:24:35,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021543599] [2023-08-03 21:24:35,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:24:35,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:24:35,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:24:35,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:24:35,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:24:35,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021543599] [2023-08-03 21:24:35,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021543599] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:24:35,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980055709] [2023-08-03 21:24:35,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:24:35,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:24:35,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:24:35,655 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 21:24:35,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 21:24:35,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:24:35,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 21:24:35,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:24:35,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:24:35,752 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:24:35,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:24:35,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980055709] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:24:35,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 21:24:35,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 21:24:35,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264850051] [2023-08-03 21:24:35,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 21:24:35,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:24:35,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:24:35,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:24:35,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:24:35,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 232 [2023-08-03 21:24:35,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:35,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:24:35,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 232 [2023-08-03 21:24:35,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:24:35,993 INFO L124 PetriNetUnfolderBase]: 904/1508 cut-off events. [2023-08-03 21:24:35,993 INFO L125 PetriNetUnfolderBase]: For 132/132 co-relation queries the response was YES. [2023-08-03 21:24:35,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3223 conditions, 1508 events. 904/1508 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 7628 event pairs, 232 based on Foata normal form. 10/1514 useless extension candidates. Maximal degree in co-relation 2819. Up to 1005 conditions per place. [2023-08-03 21:24:36,000 INFO L140 encePairwiseOnDemand]: 228/232 looper letters, 50 selfloop transitions, 3 changer transitions 1/60 dead transitions. [2023-08-03 21:24:36,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 60 transitions, 246 flow [2023-08-03 21:24:36,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 21:24:36,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 21:24:36,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 479 transitions. [2023-08-03 21:24:36,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5161637931034483 [2023-08-03 21:24:36,007 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 479 transitions. [2023-08-03 21:24:36,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 479 transitions. [2023-08-03 21:24:36,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:24:36,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 479 transitions. [2023-08-03 21:24:36,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 119.75) internal successors, (479), 4 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:36,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 232.0) internal successors, (1160), 5 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:36,011 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 232.0) internal successors, (1160), 5 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:36,011 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 82 flow. Second operand 4 states and 479 transitions. [2023-08-03 21:24:36,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 60 transitions, 246 flow [2023-08-03 21:24:36,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 60 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 21:24:36,014 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 94 flow [2023-08-03 21:24:36,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, 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} [2023-08-03 21:24:36,016 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2023-08-03 21:24:36,016 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 94 flow [2023-08-03 21:24:36,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:36,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:24:36,017 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-03 21:24:36,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 21:24:36,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-03 21:24:36,227 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:24:36,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:24:36,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1751149953, now seen corresponding path program 1 times [2023-08-03 21:24:36,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:24:36,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671179616] [2023-08-03 21:24:36,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:24:36,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:24:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:24:36,418 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 21:24:36,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:24:36,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671179616] [2023-08-03 21:24:36,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671179616] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:24:36,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728424595] [2023-08-03 21:24:36,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:24:36,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:24:36,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:24:36,421 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 21:24:36,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 21:24:36,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:24:36,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-03 21:24:36,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:24:36,536 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-03 21:24:36,537 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-03 21:24:36,568 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 [2023-08-03 21:24:36,614 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 [2023-08-03 21:24:36,668 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 21:24:36,668 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:24:36,701 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_56 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_56) c_~p~0.base) c_~p~0.offset) 0)) is different from false [2023-08-03 21:24:36,730 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 5 not checked. [2023-08-03 21:24:36,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728424595] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:24:36,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 21:24:36,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-08-03 21:24:36,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998664333] [2023-08-03 21:24:36,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 21:24:36,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-03 21:24:36,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:24:36,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-03 21:24:36,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=38, Unknown=1, NotChecked=12, Total=72 [2023-08-03 21:24:36,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 232 [2023-08-03 21:24:36,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 94 flow. Second operand has 9 states, 9 states have (on average 83.77777777777777) internal successors, (754), 9 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:36,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:24:36,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 232 [2023-08-03 21:24:36,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:24:37,000 INFO L124 PetriNetUnfolderBase]: 804/1387 cut-off events. [2023-08-03 21:24:37,001 INFO L125 PetriNetUnfolderBase]: For 988/988 co-relation queries the response was YES. [2023-08-03 21:24:37,003 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 6683 event pairs, 422 based on Foata normal form. 12/1398 useless extension candidates. Maximal degree in co-relation 2478. Up to 1203 conditions per place. [2023-08-03 21:24:37,010 INFO L140 encePairwiseOnDemand]: 227/232 looper letters, 41 selfloop transitions, 6 changer transitions 0/52 dead transitions. [2023-08-03 21:24:37,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 52 transitions, 250 flow [2023-08-03 21:24:37,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 21:24:37,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 21:24:37,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 370 transitions. [2023-08-03 21:24:37,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39870689655172414 [2023-08-03 21:24:37,012 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 370 transitions. [2023-08-03 21:24:37,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 370 transitions. [2023-08-03 21:24:37,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:24:37,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 370 transitions. [2023-08-03 21:24:37,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.5) internal successors, (370), 4 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:37,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 232.0) internal successors, (1160), 5 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:37,015 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 232.0) internal successors, (1160), 5 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:37,015 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 94 flow. Second operand 4 states and 370 transitions. [2023-08-03 21:24:37,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 52 transitions, 250 flow [2023-08-03 21:24:37,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 52 transitions, 238 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-03 21:24:37,019 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 128 flow [2023-08-03 21:24:37,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2023-08-03 21:24:37,022 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2023-08-03 21:24:37,022 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 128 flow [2023-08-03 21:24:37,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 83.77777777777777) internal successors, (754), 9 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:37,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:24:37,024 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:24:37,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 21:24:37,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:24:37,228 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:24:37,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:24:37,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1873721235, now seen corresponding path program 1 times [2023-08-03 21:24:37,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:24:37,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150291966] [2023-08-03 21:24:37,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:24:37,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:24:37,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:24:37,318 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 21:24:37,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:24:37,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150291966] [2023-08-03 21:24:37,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150291966] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:24:37,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:24:37,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 21:24:37,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863272322] [2023-08-03 21:24:37,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:24:37,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:24:37,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:24:37,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:24:37,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:24:37,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 232 [2023-08-03 21:24:37,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:37,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:24:37,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 232 [2023-08-03 21:24:37,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:24:37,456 INFO L124 PetriNetUnfolderBase]: 389/809 cut-off events. [2023-08-03 21:24:37,456 INFO L125 PetriNetUnfolderBase]: For 915/915 co-relation queries the response was YES. [2023-08-03 21:24:37,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2145 conditions, 809 events. 389/809 cut-off events. For 915/915 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3893 event pairs, 153 based on Foata normal form. 157/966 useless extension candidates. Maximal degree in co-relation 1705. Up to 450 conditions per place. [2023-08-03 21:24:37,461 INFO L140 encePairwiseOnDemand]: 221/232 looper letters, 44 selfloop transitions, 11 changer transitions 0/59 dead transitions. [2023-08-03 21:24:37,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 59 transitions, 315 flow [2023-08-03 21:24:37,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:24:37,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:24:37,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 346 transitions. [2023-08-03 21:24:37,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49712643678160917 [2023-08-03 21:24:37,466 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 346 transitions. [2023-08-03 21:24:37,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 346 transitions. [2023-08-03 21:24:37,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:24:37,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 346 transitions. [2023-08-03 21:24:37,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:37,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:37,470 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:37,470 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 128 flow. Second operand 3 states and 346 transitions. [2023-08-03 21:24:37,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 59 transitions, 315 flow [2023-08-03 21:24:37,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 59 transitions, 315 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 21:24:37,474 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 185 flow [2023-08-03 21:24:37,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=185, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2023-08-03 21:24:37,475 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 9 predicate places. [2023-08-03 21:24:37,475 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 185 flow [2023-08-03 21:24:37,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:37,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:24:37,476 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:24:37,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 21:24:37,476 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:24:37,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:24:37,476 INFO L85 PathProgramCache]: Analyzing trace with hash 136220168, now seen corresponding path program 1 times [2023-08-03 21:24:37,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:24:37,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133911840] [2023-08-03 21:24:37,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:24:37,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:24:37,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 21:24:37,500 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 21:24:37,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 21:24:37,523 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 21:24:37,523 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 21:24:37,523 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-03 21:24:37,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 21:24:37,524 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-03 21:24:37,524 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE (2/2) [2023-08-03 21:24:37,526 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 21:24:37,526 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 21:24:37,581 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 09:24:37 BasicIcfg [2023-08-03 21:24:37,581 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 21:24:37,582 INFO L158 Benchmark]: Toolchain (without parser) took 12202.47ms. Allocated memory was 536.9MB in the beginning and 645.9MB in the end (delta: 109.1MB). Free memory was 481.3MB in the beginning and 370.0MB in the end (delta: 111.3MB). Peak memory consumption was 222.2MB. Max. memory is 16.0GB. [2023-08-03 21:24:37,582 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 335.5MB. Free memory is still 282.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 21:24:37,582 INFO L158 Benchmark]: CACSL2BoogieTranslator took 464.45ms. Allocated memory is still 536.9MB. Free memory was 480.8MB in the beginning and 461.3MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 21:24:37,582 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.89ms. Allocated memory is still 536.9MB. Free memory was 461.3MB in the beginning and 459.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 21:24:37,582 INFO L158 Benchmark]: Boogie Preprocessor took 35.26ms. Allocated memory is still 536.9MB. Free memory was 459.2MB in the beginning and 457.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 21:24:37,583 INFO L158 Benchmark]: RCFGBuilder took 336.20ms. Allocated memory is still 536.9MB. Free memory was 457.4MB in the beginning and 443.6MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-03 21:24:37,583 INFO L158 Benchmark]: TraceAbstraction took 11318.29ms. Allocated memory was 536.9MB in the beginning and 645.9MB in the end (delta: 109.1MB). Free memory was 443.1MB in the beginning and 370.0MB in the end (delta: 73.0MB). Peak memory consumption was 182.4MB. Max. memory is 16.0GB. [2023-08-03 21:24:37,584 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 335.5MB. Free memory is still 282.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 464.45ms. Allocated memory is still 536.9MB. Free memory was 480.8MB in the beginning and 461.3MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 42.89ms. Allocated memory is still 536.9MB. Free memory was 461.3MB in the beginning and 459.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 35.26ms. Allocated memory is still 536.9MB. Free memory was 459.2MB in the beginning and 457.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 336.20ms. Allocated memory is still 536.9MB. Free memory was 457.4MB in the beginning and 443.6MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 11318.29ms. Allocated memory was 536.9MB in the beginning and 645.9MB in the end (delta: 109.1MB). Free memory was 443.1MB in the beginning and 370.0MB in the end (delta: 73.0MB). Peak memory consumption was 182.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 90 PlacesBefore, 24 PlacesAfterwards, 97 TransitionsBefore, 29 TransitionsAfterwards, 2176 CoEnabledTransitionPairs, 6 FixpointIterations, 29 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 2 ChoiceCompositions, 82 TotalNumberOfCompositions, 3921 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2120, independent: 1970, independent conditional: 0, independent unconditional: 1970, dependent: 150, dependent conditional: 0, dependent unconditional: 150, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1215, independent: 1179, independent conditional: 0, independent unconditional: 1179, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2120, independent: 791, independent conditional: 0, independent unconditional: 791, dependent: 114, dependent conditional: 0, dependent unconditional: 114, unknown: 1215, unknown conditional: 0, unknown unconditional: 1215] , Statistics on independence cache: Total cache size (in pairs): 75, Positive cache size: 58, Positive conditional cache size: 0, Positive unconditional cache size: 58, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 119 PlacesBefore, 39 PlacesAfterwards, 130 TransitionsBefore, 48 TransitionsAfterwards, 6464 CoEnabledTransitionPairs, 6 FixpointIterations, 29 TrivialSequentialCompositions, 56 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 2 ChoiceCompositions, 102 TotalNumberOfCompositions, 13307 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5509, independent: 5256, independent conditional: 0, independent unconditional: 5256, dependent: 253, dependent conditional: 0, dependent unconditional: 253, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3219, independent: 3165, independent conditional: 0, independent unconditional: 3165, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5509, independent: 2091, independent conditional: 0, independent unconditional: 2091, dependent: 199, dependent conditional: 0, dependent unconditional: 199, unknown: 3219, unknown conditional: 0, unknown unconditional: 3219] , Statistics on independence cache: Total cache size (in pairs): 126, Positive cache size: 102, Positive conditional cache size: 0, Positive unconditional cache size: 102, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.5s, 119 PlacesBefore, 39 PlacesAfterwards, 130 TransitionsBefore, 48 TransitionsAfterwards, 6464 CoEnabledTransitionPairs, 6 FixpointIterations, 29 TrivialSequentialCompositions, 56 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 2 ChoiceCompositions, 102 TotalNumberOfCompositions, 13375 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5783, independent: 5528, independent conditional: 0, independent unconditional: 5528, dependent: 255, dependent conditional: 0, dependent unconditional: 255, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3253, independent: 3186, independent conditional: 0, independent unconditional: 3186, dependent: 67, dependent conditional: 0, dependent unconditional: 67, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5783, independent: 2342, independent conditional: 0, independent unconditional: 2342, dependent: 188, dependent conditional: 0, dependent unconditional: 188, unknown: 3253, unknown conditional: 0, unknown unconditional: 3253] , Statistics on independence cache: Total cache size (in pairs): 149, Positive cache size: 126, Positive conditional cache size: 0, Positive unconditional cache size: 126, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, 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 int data = 0; [L698] 0 int *p = &data, *q; [L699] 0 pthread_mutex_t mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L707] 0 pthread_t t_ids[2]; [L707] 0 int i=0; VAL [__global_lock={3:0}, data={4:0}, i=0, mutex={5:0}, p={4:0}, q={0:0}, t_ids={6:0}] [L707] COND TRUE 0 i<2 [L707] FCALL, FORK 0 pthread_create(&t_ids[i], ((void *)0), t_fun, ((void *)0)) VAL [__global_lock={3:0}, arg={0:0}, data={4:0}, i=0, mutex={5:0}, p={4:0}, pthread_create(&t_ids[i], ((void *)0), t_fun, ((void *)0))=-2, q={0:0}, t_ids={6:0}] [L707] 0 i++ VAL [__global_lock={3:0}, arg={0:0}, data={4:0}, i=1, mutex={5:0}, p={4:0}, q={0:0}, t_ids={6:0}] [L707] COND TRUE 0 i<2 [L707] FCALL, FORK 0 pthread_create(&t_ids[i], ((void *)0), t_fun, ((void *)0)) VAL [__global_lock={3:0}, arg={0:0}, arg={0:0}, data={4:0}, i=1, mutex={5:0}, p={4:0}, pthread_create(&t_ids[i], ((void *)0), t_fun, ((void *)0))=-1, q={0:0}, t_ids={6:0}] [L707] 0 i++ VAL [__global_lock={3:0}, arg={0:0}, arg={0:0}, data={4:0}, i=2, mutex={5:0}, p={4:0}, q={0:0}, t_ids={6:0}] [L702] EXPR 1 \read(*p) VAL [\read(*p)=0, __global_lock={3:0}, arg={0:0}, arg={0:0}, data={4:0}, mutex={5:0}, p={4:0}, q={0:0}] [L702] 1 (*p)++ [L707] COND FALSE 0 !(i<2) [L708] 0 q = p VAL [(*p)++=0, __global_lock={3:0}, arg={0:0}, arg={0:0}, data={4:0}, i=2, mutex={5:0}, p={4:0}, q={4:0}, t_ids={6:0}] [L709] EXPR 0 \read(*q) [L709] CALL 0 __VERIFIER_assert((*q) == 0) [L691] COND TRUE 0 !(cond) [L691] 0 reach_error() VAL [\old(cond)=0, __global_lock={3:0}, arg={0:0}, arg={0:0}, cond=0, data={4:0}, mutex={5:0}, p={4:0}, q={4:0}] - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 115 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: 2.9s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 4 procedures, 142 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: 3.5s, OverallIterations: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 76 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 69 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 122 IncrementalHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 1 mSDtfsCounter, 122 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 SizeOfPredicates, 0 NumberOfNonLiveVariables, 134 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 11/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 142 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: 4.7s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 159 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 132 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 64 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 457 IncrementalHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 4 mSDtfsCounter, 457 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=185occurred 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, 0.6s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 73 ConstructedInterpolants, 5 QuantifiedInterpolants, 487 SizeOfPredicates, 5 NumberOfNonLiveVariables, 268 ConjunctsInSsa, 31 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 RESULT: Ultimate proved your program to be incorrect! [2023-08-03 21:24:37,613 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...