/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 TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread_reorder_5_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 15:55:06,018 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 15:55:06,078 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 15:55:06,083 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 15:55:06,083 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 15:55:06,084 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 15:55:06,084 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 15:55:06,104 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 15:55:06,108 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 15:55:06,111 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 15:55:06,111 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 15:55:06,111 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 15:55:06,112 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 15:55:06,113 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 15:55:06,113 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 15:55:06,113 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 15:55:06,114 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 15:55:06,114 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 15:55:06,114 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 15:55:06,114 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 15:55:06,114 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 15:55:06,115 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 15:55:06,115 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 15:55:06,115 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 15:55:06,115 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 15:55:06,116 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 15:55:06,116 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 15:55:06,116 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 15:55:06,117 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 15:55:06,117 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 15:55:06,117 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:55:06,118 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 15:55:06,118 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 15:55:06,118 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 15:55:06,118 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 15:55:06,118 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 15:55:06,118 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 15:55:06,118 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 15:55:06,118 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 15:55:06,118 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 15:55:06,119 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 15:55:06,119 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 15:55:06,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 15:55:06,310 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 15:55:06,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 15:55:06,312 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 15:55:06,312 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 15:55:06,313 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread_reorder_5_bound2.i [2023-08-03 15:55:07,313 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 15:55:07,577 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 15:55:07,577 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread_reorder_5_bound2.i [2023-08-03 15:55:07,593 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d2c84572/53870ae62f6b4978b361feac8b1890dd/FLAG3a976724a [2023-08-03 15:55:07,898 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d2c84572/53870ae62f6b4978b361feac8b1890dd [2023-08-03 15:55:07,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 15:55:07,901 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 15:55:07,902 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 15:55:07,902 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 15:55:07,904 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 15:55:07,904 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:55:07" (1/1) ... [2023-08-03 15:55:07,905 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37d9753b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:55:07, skipping insertion in model container [2023-08-03 15:55:07,905 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:55:07" (1/1) ... [2023-08-03 15:55:07,944 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 15:55:08,281 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/pthread_reorder_5_bound2.i[59385,59398] [2023-08-03 15:55:08,282 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:55:08,288 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 15:55:08,303 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [265] [2023-08-03 15:55:08,304 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [265] [2023-08-03 15:55:08,316 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [579] [2023-08-03 15:55:08,334 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/pthread_reorder_5_bound2.i[59385,59398] [2023-08-03 15:55:08,335 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:55:08,396 WARN L667 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 15:55:08,400 INFO L206 MainTranslator]: Completed translation [2023-08-03 15:55:08,402 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:55:08 WrapperNode [2023-08-03 15:55:08,402 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 15:55:08,403 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 15:55:08,403 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 15:55:08,403 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 15:55:08,407 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:55:08" (1/1) ... [2023-08-03 15:55:08,431 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:55:08" (1/1) ... [2023-08-03 15:55:08,453 INFO L138 Inliner]: procedures = 371, calls = 47, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 167 [2023-08-03 15:55:08,453 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 15:55:08,454 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 15:55:08,454 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 15:55:08,454 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 15:55:08,459 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:55:08" (1/1) ... [2023-08-03 15:55:08,460 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:55:08" (1/1) ... [2023-08-03 15:55:08,476 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:55:08" (1/1) ... [2023-08-03 15:55:08,476 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:55:08" (1/1) ... [2023-08-03 15:55:08,480 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:55:08" (1/1) ... [2023-08-03 15:55:08,482 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:55:08" (1/1) ... [2023-08-03 15:55:08,483 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:55:08" (1/1) ... [2023-08-03 15:55:08,484 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:55:08" (1/1) ... [2023-08-03 15:55:08,486 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 15:55:08,486 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 15:55:08,486 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 15:55:08,486 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 15:55:08,487 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:55:08" (1/1) ... [2023-08-03 15:55:08,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:55:08,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:55:08,533 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 15:55:08,537 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 15:55:08,572 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2023-08-03 15:55:08,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 15:55:08,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-03 15:55:08,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 15:55:08,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 15:55:08,574 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2023-08-03 15:55:08,574 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2023-08-03 15:55:08,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 15:55:08,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 15:55:08,575 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2023-08-03 15:55:08,575 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2023-08-03 15:55:08,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 15:55:08,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 15:55:08,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 15:55:08,577 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 15:55:08,690 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 15:55:08,692 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 15:55:08,873 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 15:55:08,879 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 15:55:08,879 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-03 15:55:08,881 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:55:08 BoogieIcfgContainer [2023-08-03 15:55:08,881 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 15:55:08,883 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 15:55:08,883 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 15:55:08,885 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 15:55:08,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 03:55:07" (1/3) ... [2023-08-03 15:55:08,885 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@568e44c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:55:08, skipping insertion in model container [2023-08-03 15:55:08,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:55:08" (2/3) ... [2023-08-03 15:55:08,886 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@568e44c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:55:08, skipping insertion in model container [2023-08-03 15:55:08,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:55:08" (3/3) ... [2023-08-03 15:55:08,887 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread_reorder_5_bound2.i [2023-08-03 15:55:08,892 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 15:55:08,898 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 15:55:08,899 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 15:55:08,899 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 15:55:09,006 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-03 15:55:09,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 189 transitions, 400 flow [2023-08-03 15:55:09,142 INFO L124 PetriNetUnfolderBase]: 37/374 cut-off events. [2023-08-03 15:55:09,142 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 15:55:09,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 394 conditions, 374 events. 37/374 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1306 event pairs, 0 based on Foata normal form. 0/329 useless extension candidates. Maximal degree in co-relation 203. Up to 8 conditions per place. [2023-08-03 15:55:09,146 INFO L82 GeneralOperation]: Start removeDead. Operand has 177 places, 189 transitions, 400 flow [2023-08-03 15:55:09,155 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 177 places, 187 transitions, 390 flow [2023-08-03 15:55:09,157 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:55:09,173 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 177 places, 187 transitions, 390 flow [2023-08-03 15:55:09,179 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 177 places, 187 transitions, 390 flow [2023-08-03 15:55:09,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 187 transitions, 390 flow [2023-08-03 15:55:09,228 INFO L124 PetriNetUnfolderBase]: 31/346 cut-off events. [2023-08-03 15:55:09,229 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-03 15:55:09,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 346 events. 31/346 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1141 event pairs, 0 based on Foata normal form. 0/303 useless extension candidates. Maximal degree in co-relation 207. Up to 8 conditions per place. [2023-08-03 15:55:09,236 INFO L119 LiptonReduction]: Number of co-enabled transitions 2446 [2023-08-03 15:55:18,817 INFO L134 LiptonReduction]: Checked pairs total: 3263 [2023-08-03 15:55:18,818 INFO L136 LiptonReduction]: Total number of compositions: 210 [2023-08-03 15:55:18,836 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:55:18,842 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;@751073e2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:55:18,842 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 15:55:18,848 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:55:18,848 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-08-03 15:55:18,848 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:55:18,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:55:18,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 15:55:18,849 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 15:55:18,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:55:18,853 INFO L85 PathProgramCache]: Analyzing trace with hash 669691521, now seen corresponding path program 1 times [2023-08-03 15:55:18,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:55:18,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846590300] [2023-08-03 15:55:18,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:55:18,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:55:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:55:19,056 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 15:55:19,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:55:19,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846590300] [2023-08-03 15:55:19,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846590300] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:55:19,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:55:19,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 15:55:19,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974037048] [2023-08-03 15:55:19,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:55:19,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:55:19,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:55:19,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:55:19,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:55:19,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 399 [2023-08-03 15:55:19,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 23 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 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 15:55:19,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:55:19,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 399 [2023-08-03 15:55:19,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:55:19,204 INFO L124 PetriNetUnfolderBase]: 118/268 cut-off events. [2023-08-03 15:55:19,205 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-08-03 15:55:19,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 558 conditions, 268 events. 118/268 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1065 event pairs, 29 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 380. Up to 201 conditions per place. [2023-08-03 15:55:19,207 INFO L140 encePairwiseOnDemand]: 396/399 looper letters, 31 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2023-08-03 15:55:19,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 35 transitions, 155 flow [2023-08-03 15:55:19,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:55:19,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:55:19,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 538 transitions. [2023-08-03 15:55:19,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494569757727652 [2023-08-03 15:55:19,225 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 538 transitions. [2023-08-03 15:55:19,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 538 transitions. [2023-08-03 15:55:19,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:55:19,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 538 transitions. [2023-08-03 15:55:19,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 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 15:55:19,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:55:19,239 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:55:19,241 INFO L175 Difference]: Start difference. First operand has 26 places, 23 transitions, 62 flow. Second operand 3 states and 538 transitions. [2023-08-03 15:55:19,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 35 transitions, 155 flow [2023-08-03 15:55:19,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 35 transitions, 155 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 15:55:19,246 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 70 flow [2023-08-03 15:55:19,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2023-08-03 15:55:19,250 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2023-08-03 15:55:19,250 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 70 flow [2023-08-03 15:55:19,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 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 15:55:19,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:55:19,251 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 15:55:19,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 15:55:19,251 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 15:55:19,252 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:55:19,252 INFO L85 PathProgramCache]: Analyzing trace with hash -697881264, now seen corresponding path program 1 times [2023-08-03 15:55:19,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:55:19,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266072752] [2023-08-03 15:55:19,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:55:19,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:55:19,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:55:19,292 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 15:55:19,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:55:19,366 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 15:55:19,366 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 15:55:19,368 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 15:55:19,369 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 15:55:19,369 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 15:55:19,369 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-03 15:55:19,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 15:55:19,370 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 15:55:19,372 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 15:55:19,372 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 15:55:19,399 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-03 15:55:19,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 211 transitions, 470 flow [2023-08-03 15:55:19,504 INFO L124 PetriNetUnfolderBase]: 149/1167 cut-off events. [2023-08-03 15:55:19,504 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-03 15:55:19,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1264 conditions, 1167 events. 149/1167 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 6387 event pairs, 1 based on Foata normal form. 0/1025 useless extension candidates. Maximal degree in co-relation 685. Up to 32 conditions per place. [2023-08-03 15:55:19,507 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 211 transitions, 470 flow [2023-08-03 15:55:19,510 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 198 places, 211 transitions, 470 flow [2023-08-03 15:55:19,510 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:55:19,511 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 198 places, 211 transitions, 470 flow [2023-08-03 15:55:19,511 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 198 places, 211 transitions, 470 flow [2023-08-03 15:55:19,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 211 transitions, 470 flow [2023-08-03 15:55:19,588 INFO L124 PetriNetUnfolderBase]: 149/1167 cut-off events. [2023-08-03 15:55:19,588 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-03 15:55:19,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1264 conditions, 1167 events. 149/1167 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 6387 event pairs, 1 based on Foata normal form. 0/1025 useless extension candidates. Maximal degree in co-relation 685. Up to 32 conditions per place. [2023-08-03 15:55:19,602 INFO L119 LiptonReduction]: Number of co-enabled transitions 6232 [2023-08-03 15:55:29,122 INFO L134 LiptonReduction]: Checked pairs total: 12263 [2023-08-03 15:55:29,122 INFO L136 LiptonReduction]: Total number of compositions: 214 [2023-08-03 15:55:29,123 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:55:29,124 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;@751073e2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:55:29,124 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-03 15:55:29,126 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:55:29,126 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-08-03 15:55:29,126 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:55:29,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:55:29,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 15:55:29,127 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 15:55:29,127 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:55:29,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1094458797, now seen corresponding path program 1 times [2023-08-03 15:55:29,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:55:29,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261165088] [2023-08-03 15:55:29,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:55:29,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:55:29,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:55:29,180 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 15:55:29,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:55:29,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261165088] [2023-08-03 15:55:29,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261165088] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:55:29,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:55:29,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 15:55:29,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958847796] [2023-08-03 15:55:29,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:55:29,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:55:29,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:55:29,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:55:29,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:55:29,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 425 [2023-08-03 15:55:29,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 39 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 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 15:55:29,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:55:29,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 425 [2023-08-03 15:55:29,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:55:29,568 INFO L124 PetriNetUnfolderBase]: 4447/6838 cut-off events. [2023-08-03 15:55:29,569 INFO L125 PetriNetUnfolderBase]: For 1290/1290 co-relation queries the response was YES. [2023-08-03 15:55:29,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14161 conditions, 6838 events. 4447/6838 cut-off events. For 1290/1290 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 37075 event pairs, 1440 based on Foata normal form. 0/5176 useless extension candidates. Maximal degree in co-relation 10038. Up to 6226 conditions per place. [2023-08-03 15:55:29,594 INFO L140 encePairwiseOnDemand]: 420/425 looper letters, 53 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2023-08-03 15:55:29,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 62 transitions, 309 flow [2023-08-03 15:55:29,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:55:29,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:55:29,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2023-08-03 15:55:29,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2023-08-03 15:55:29,596 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 595 transitions. [2023-08-03 15:55:29,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 595 transitions. [2023-08-03 15:55:29,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:55:29,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 595 transitions. [2023-08-03 15:55:29,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.33333333333334) internal successors, (595), 3 states have internal predecessors, (595), 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 15:55:29,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 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 15:55:29,600 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 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 15:55:29,600 INFO L175 Difference]: Start difference. First operand has 40 places, 39 transitions, 126 flow. Second operand 3 states and 595 transitions. [2023-08-03 15:55:29,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 62 transitions, 309 flow [2023-08-03 15:55:29,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 62 transitions, 309 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 15:55:29,609 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 147 flow [2023-08-03 15:55:29,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2023-08-03 15:55:29,610 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2023-08-03 15:55:29,610 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 147 flow [2023-08-03 15:55:29,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 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 15:55:29,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:55:29,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:55:29,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 15:55:29,611 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 15:55:29,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:55:29,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1408732198, now seen corresponding path program 1 times [2023-08-03 15:55:29,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:55:29,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097190598] [2023-08-03 15:55:29,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:55:29,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:55:29,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:55:29,648 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 15:55:29,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:55:29,676 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 15:55:29,677 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 15:55:29,677 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-08-03 15:55:29,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-03 15:55:29,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-08-03 15:55:29,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-03 15:55:29,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-08-03 15:55:29,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 15:55:29,680 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 15:55:29,682 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 15:55:29,682 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 15:55:29,726 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 03:55:29 BasicIcfg [2023-08-03 15:55:29,726 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 15:55:29,728 INFO L158 Benchmark]: Toolchain (without parser) took 21825.67ms. Allocated memory was 557.8MB in the beginning and 671.1MB in the end (delta: 113.2MB). Free memory was 520.7MB in the beginning and 258.3MB in the end (delta: 262.4MB). Peak memory consumption was 378.2MB. Max. memory is 16.0GB. [2023-08-03 15:55:29,728 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 394.3MB. Free memory is still 351.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 15:55:29,729 INFO L158 Benchmark]: CACSL2BoogieTranslator took 500.54ms. Allocated memory is still 557.8MB. Free memory was 520.7MB in the beginning and 481.0MB in the end (delta: 39.7MB). Peak memory consumption was 39.8MB. Max. memory is 16.0GB. [2023-08-03 15:55:29,729 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.66ms. Allocated memory is still 557.8MB. Free memory was 481.0MB in the beginning and 478.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 15:55:29,729 INFO L158 Benchmark]: Boogie Preprocessor took 31.79ms. Allocated memory is still 557.8MB. Free memory was 478.3MB in the beginning and 476.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 15:55:29,729 INFO L158 Benchmark]: RCFGBuilder took 394.88ms. Allocated memory is still 557.8MB. Free memory was 476.2MB in the beginning and 456.8MB in the end (delta: 19.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-03 15:55:29,730 INFO L158 Benchmark]: TraceAbstraction took 20843.72ms. Allocated memory was 557.8MB in the beginning and 671.1MB in the end (delta: 113.2MB). Free memory was 456.3MB in the beginning and 258.3MB in the end (delta: 198.0MB). Peak memory consumption was 313.2MB. Max. memory is 16.0GB. [2023-08-03 15:55:29,731 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 394.3MB. Free memory is still 351.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 500.54ms. Allocated memory is still 557.8MB. Free memory was 520.7MB in the beginning and 481.0MB in the end (delta: 39.7MB). Peak memory consumption was 39.8MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 50.66ms. Allocated memory is still 557.8MB. Free memory was 481.0MB in the beginning and 478.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.79ms. Allocated memory is still 557.8MB. Free memory was 478.3MB in the beginning and 476.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 394.88ms. Allocated memory is still 557.8MB. Free memory was 476.2MB in the beginning and 456.8MB in the end (delta: 19.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 20843.72ms. Allocated memory was 557.8MB in the beginning and 671.1MB in the end (delta: 113.2MB). Free memory was 456.3MB in the beginning and 258.3MB in the end (delta: 198.0MB). Peak memory consumption was 313.2MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 265]: Unsoundness Warning unspecified type, defaulting to int C: short [265] - GenericResultAtLocation [Line: 265]: Unsoundness Warning unspecified type, defaulting to int C: short [265] - GenericResultAtLocation [Line: 579]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [579] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.6s, 177 PlacesBefore, 26 PlacesAfterwards, 187 TransitionsBefore, 23 TransitionsAfterwards, 2446 CoEnabledTransitionPairs, 8 FixpointIterations, 72 TrivialSequentialCompositions, 85 ConcurrentSequentialCompositions, 12 TrivialYvCompositions, 28 ConcurrentYvCompositions, 13 ChoiceCompositions, 210 TotalNumberOfCompositions, 3263 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2546, independent: 2509, independent conditional: 0, independent unconditional: 2509, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1447, independent: 1435, independent conditional: 0, independent unconditional: 1435, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2546, independent: 1074, independent conditional: 0, independent unconditional: 1074, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 1447, unknown conditional: 0, unknown unconditional: 1447] , Statistics on independence cache: Total cache size (in pairs): 31, Positive cache size: 29, Positive conditional cache size: 0, Positive unconditional cache size: 29, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.6s, 198 PlacesBefore, 40 PlacesAfterwards, 211 TransitionsBefore, 39 TransitionsAfterwards, 6232 CoEnabledTransitionPairs, 8 FixpointIterations, 68 TrivialSequentialCompositions, 90 ConcurrentSequentialCompositions, 11 TrivialYvCompositions, 31 ConcurrentYvCompositions, 14 ChoiceCompositions, 214 TotalNumberOfCompositions, 12263 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8812, independent: 8719, independent conditional: 0, independent unconditional: 8719, dependent: 93, dependent conditional: 0, dependent unconditional: 93, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3723, independent: 3702, independent conditional: 0, independent unconditional: 3702, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 8812, independent: 5017, independent conditional: 0, independent unconditional: 5017, dependent: 72, dependent conditional: 0, dependent unconditional: 72, unknown: 3723, unknown conditional: 0, unknown unconditional: 3723] , Statistics on independence cache: Total cache size (in pairs): 110, Positive cache size: 105, Positive conditional cache size: 0, Positive unconditional cache size: 105, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 1287]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of sscanf at line 1243. Possible FailurePath: [L1227] 0 static int iSet = 4; [L1228] 0 static int iCheck = 1; [L1229] 0 static int a = 0; [L1230] 0 static int b = 0; [L1237] 0 int i, err; [L1238] COND TRUE 0 argc != 1 [L1239] COND FALSE 0 !(argc != 3) [L1243] 0 argv[1] [L1244] 0 argv[2] [L1247] EXPR 0 \read(iSet) [L1247] 0 iSet > 2 || iCheck > 2 [L1247] EXPR 0 \read(iCheck) [L1247] 0 iSet > 2 || iCheck > 2 [L1247] COND FALSE 0 !(iSet > 2 || iCheck > 2) [L1250] EXPR 0 \read(iSet) [L1250] 0 pthread_t setPool[iSet]; [L1251] EXPR 0 \read(iCheck) [L1251] 0 pthread_t checkPool[iCheck]; [L1252] 0 i = 0 VAL [\old(argc)=3, \read(iCheck)=1, \read(iSet)=1, a=0, argc=3, argv={58:59}, argv={58:59}, b=0, checkPool={14:0}, i=0, iCheck={11:0}, iSet={10:0}, setPool={13:0}] [L1252] EXPR 0 \read(iSet) [L1252] COND TRUE 0 i < iSet [L1253] EXPR, FCALL, FORK 0 pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)) VAL [\old(argc)=3, \read(iCheck)=1, \read(iSet)=1, a=0, argc=3, argv={58:59}, argv={58:59}, b=0, checkPool={14:0}, i=0, iCheck={11:0}, iSet={10:0}, param={0:0}, pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0))=-1, setPool={13:0}] [L1253] EXPR 0 err = pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)) VAL [\old(argc)=3, \read(iCheck)=1, \read(iSet)=1, a=0, argc=3, argv={58:59}, argv={58:59}, b=0, checkPool={14:0}, err=0, i=0, iCheck={11:0}, iSet={10:0}, param={0:0}, pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0))=-1, pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0))=0, setPool={13:0}] [L1253] COND FALSE 0 !(0 != (err = pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)))) [L1252] 0 i++ VAL [\old(argc)=3, \read(iCheck)=1, \read(iSet)=1, a=0, argc=3, argv={58:59}, argv={58:59}, b=0, checkPool={14:0}, err=0, fprintf(stderr, "Error [%d] found creating set thread.\n", err)=56, i=1, iCheck={11:0}, iSet={10:0}, param={0:0}, setPool={13:0}] [L1252] EXPR 0 \read(iSet) [L1252] COND FALSE 0 !(i < iSet) [L1258] 0 i = 0 VAL [\old(argc)=3, \read(iCheck)=1, \read(iSet)=1, a=0, argc=3, argv={58:59}, argv={58:59}, b=0, checkPool={14:0}, err=0, fprintf(stderr, "Error [%d] found creating set thread.\n", err)=56, i=0, iCheck={11:0}, iSet={10:0}, param={0:0}, setPool={13:0}] [L1258] EXPR 0 \read(iCheck) [L1258] COND TRUE 0 i < iCheck [L1259-L1260] FCALL, FORK 0 pthread_create(&checkPool[i], ((void *)0), &checkThread, ((void *)0)) VAL [\old(argc)=3, \read(iCheck)=1, \read(iSet)=1, a=0, argc=3, argv={58:59}, argv={58:59}, b=0, checkPool={14:0}, err=0, fprintf(stderr, "Error [%d] found creating set thread.\n", err)=56, i=0, iCheck={11:0}, iSet={10:0}, param={0:0}, param={0:0}, pthread_create(&checkPool[i], ((void *)0), &checkThread, ((void *)0))=0, setPool={13:0}] [L1280] 1 a = 1 VAL [a=1, b=0, iCheck={11:0}, iSet={10:0}, param={0:0}, param={0:0}, param={0:0}] [L1285] COND TRUE 2 ! ((a == 0 && b == 0) || (a == 1 && b == -1)) [L1287] 2 reach_error() VAL [a=1, b=0, iCheck={11:0}, iSet={10:0}, param={0:0}, param={0:0}, param={0:0}, param={0:0}] - UnprovableResult [Line: 1253]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1259]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 190 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 10.3s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 46 IncrementalHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 2 mSDtfsCounter, 46 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=1, InterpolantAutomatonStates: 3, 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, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 28 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 with 2 thread instances CFG has 7 procedures, 207 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 10.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 37 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 81 IncrementalHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 2 mSDtfsCounter, 81 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=147occurred in iteration=1, InterpolantAutomatonStates: 3, 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, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 28 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-08-03 15:55:29,750 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...