/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/pthread_reorder_5_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 22:01:21,304 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 22:01:21,353 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 22:01:21,357 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 22:01:21,357 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 22:01:21,357 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 22:01:21,358 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 22:01:21,379 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 22:01:21,379 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 22:01:21,380 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 22:01:21,380 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 22:01:21,381 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 22:01:21,381 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 22:01:21,381 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 22:01:21,382 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 22:01:21,382 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 22:01:21,383 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 22:01:21,383 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 22:01:21,383 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 22:01:21,384 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 22:01:21,384 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 22:01:21,386 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 22:01:21,386 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 22:01:21,386 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 22:01:21,387 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 22:01:21,387 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 22:01:21,387 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 22:01:21,388 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 22:01:21,388 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 22:01:21,388 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 22:01:21,389 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 22:01:21,389 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 22:01:21,389 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 22:01:21,389 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 22:01:21,390 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 22:01:21,390 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 22:01:21,390 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 22:01:21,391 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 22:01:21,391 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 22:01:21,391 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 22:01:21,391 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 22:01:21,393 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-03 22:01:21,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 22:01:21,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 22:01:21,634 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 22:01:21,635 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 22:01:21,635 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 22:01:21,636 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread_reorder_5_bound2.i [2023-08-03 22:01:22,746 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 22:01:23,033 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 22:01:23,033 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread_reorder_5_bound2.i [2023-08-03 22:01:23,055 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08fab45fd/9403ee84c37843c79af35738e429d8d1/FLAG17e6a1329 [2023-08-03 22:01:23,071 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08fab45fd/9403ee84c37843c79af35738e429d8d1 [2023-08-03 22:01:23,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 22:01:23,077 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 22:01:23,078 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 22:01:23,079 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 22:01:23,081 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 22:01:23,082 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 10:01:23" (1/1) ... [2023-08-03 22:01:23,083 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d9552d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:01:23, skipping insertion in model container [2023-08-03 22:01:23,083 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 10:01:23" (1/1) ... [2023-08-03 22:01:23,133 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 22:01:23,499 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 22:01:23,500 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 22:01:23,507 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 22:01:23,522 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [265] [2023-08-03 22:01:23,523 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [265] [2023-08-03 22:01:23,530 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [579] [2023-08-03 22:01:23,550 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 22:01:23,551 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 22:01:23,608 WARN L667 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 22:01:23,613 INFO L206 MainTranslator]: Completed translation [2023-08-03 22:01:23,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:01:23 WrapperNode [2023-08-03 22:01:23,614 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 22:01:23,615 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 22:01:23,615 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 22:01:23,615 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 22:01:23,621 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:01:23" (1/1) ... [2023-08-03 22:01:23,637 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:01:23" (1/1) ... [2023-08-03 22:01:23,658 INFO L138 Inliner]: procedures = 371, calls = 47, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 167 [2023-08-03 22:01:23,659 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 22:01:23,659 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 22:01:23,660 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 22:01:23,660 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 22:01:23,671 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:01:23" (1/1) ... [2023-08-03 22:01:23,671 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:01:23" (1/1) ... [2023-08-03 22:01:23,675 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:01:23" (1/1) ... [2023-08-03 22:01:23,675 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:01:23" (1/1) ... [2023-08-03 22:01:23,684 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:01:23" (1/1) ... [2023-08-03 22:01:23,687 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:01:23" (1/1) ... [2023-08-03 22:01:23,689 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:01:23" (1/1) ... [2023-08-03 22:01:23,690 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:01:23" (1/1) ... [2023-08-03 22:01:23,693 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 22:01:23,694 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 22:01:23,694 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 22:01:23,694 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 22:01:23,695 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:01:23" (1/1) ... [2023-08-03 22:01:23,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 22:01:23,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:01:23,742 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 22:01:23,768 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 22:01:23,787 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2023-08-03 22:01:23,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 22:01:23,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-03 22:01:23,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 22:01:23,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 22:01:23,789 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2023-08-03 22:01:23,789 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2023-08-03 22:01:23,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 22:01:23,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 22:01:23,790 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2023-08-03 22:01:23,790 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2023-08-03 22:01:23,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 22:01:23,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 22:01:23,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 22:01:23,791 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 22:01:23,956 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 22:01:23,958 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 22:01:24,175 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 22:01:24,182 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 22:01:24,182 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-03 22:01:24,184 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 10:01:24 BoogieIcfgContainer [2023-08-03 22:01:24,184 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 22:01:24,186 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 22:01:24,186 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 22:01:24,188 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 22:01:24,188 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 10:01:23" (1/3) ... [2023-08-03 22:01:24,189 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42de4e72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 10:01:24, skipping insertion in model container [2023-08-03 22:01:24,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:01:23" (2/3) ... [2023-08-03 22:01:24,189 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42de4e72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 10:01:24, skipping insertion in model container [2023-08-03 22:01:24,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 10:01:24" (3/3) ... [2023-08-03 22:01:24,190 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread_reorder_5_bound2.i [2023-08-03 22:01:24,196 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 22:01:24,204 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 22:01:24,205 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 22:01:24,205 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 22:01:24,300 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-03 22:01:24,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 189 transitions, 400 flow [2023-08-03 22:01:24,426 INFO L124 PetriNetUnfolderBase]: 37/374 cut-off events. [2023-08-03 22:01:24,426 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 22:01:24,432 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 22:01:24,432 INFO L82 GeneralOperation]: Start removeDead. Operand has 177 places, 189 transitions, 400 flow [2023-08-03 22:01:24,437 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 177 places, 187 transitions, 390 flow [2023-08-03 22:01:24,439 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 22:01:24,447 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 177 places, 187 transitions, 390 flow [2023-08-03 22:01:24,450 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 177 places, 187 transitions, 390 flow [2023-08-03 22:01:24,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 187 transitions, 390 flow [2023-08-03 22:01:24,497 INFO L124 PetriNetUnfolderBase]: 31/346 cut-off events. [2023-08-03 22:01:24,497 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-03 22:01:24,499 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 22:01:24,502 INFO L119 LiptonReduction]: Number of co-enabled transitions 2446 [2023-08-03 22:01:35,060 INFO L134 LiptonReduction]: Checked pairs total: 3263 [2023-08-03 22:01:35,060 INFO L136 LiptonReduction]: Total number of compositions: 210 [2023-08-03 22:01:35,081 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 22:01:35,087 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;@3d48d895, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 22:01:35,087 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-03 22:01:35,102 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 22:01:35,102 INFO L124 PetriNetUnfolderBase]: 0/23 cut-off events. [2023-08-03 22:01:35,102 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 22:01:35,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:01:35,103 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 22:01:35,104 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 22:01:35,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:01:35,109 INFO L85 PathProgramCache]: Analyzing trace with hash -697881264, now seen corresponding path program 1 times [2023-08-03 22:01:35,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:01:35,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54132916] [2023-08-03 22:01:35,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:01:35,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:01:35,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 22:01:35,275 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 22:01:35,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 22:01:35,350 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 22:01:35,351 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 22:01:35,352 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-03 22:01:35,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-03 22:01:35,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 22:01:35,355 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 22:01:35,357 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-03 22:01:35,358 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 22:01:35,358 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 22:01:35,382 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-03 22:01:35,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 211 transitions, 470 flow [2023-08-03 22:01:35,524 INFO L124 PetriNetUnfolderBase]: 149/1167 cut-off events. [2023-08-03 22:01:35,524 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-03 22:01:35,532 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 22:01:35,532 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 211 transitions, 470 flow [2023-08-03 22:01:35,537 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 198 places, 211 transitions, 470 flow [2023-08-03 22:01:35,538 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 22:01:35,538 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 198 places, 211 transitions, 470 flow [2023-08-03 22:01:35,538 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 198 places, 211 transitions, 470 flow [2023-08-03 22:01:35,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 211 transitions, 470 flow [2023-08-03 22:01:35,646 INFO L124 PetriNetUnfolderBase]: 149/1167 cut-off events. [2023-08-03 22:01:35,647 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-03 22:01:35,652 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 22:01:35,666 INFO L119 LiptonReduction]: Number of co-enabled transitions 6232 [2023-08-03 22:01:46,719 INFO L134 LiptonReduction]: Checked pairs total: 12263 [2023-08-03 22:01:46,719 INFO L136 LiptonReduction]: Total number of compositions: 214 [2023-08-03 22:01:46,721 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 22:01:46,722 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;@3d48d895, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 22:01:46,722 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-03 22:01:46,728 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 22:01:46,728 INFO L124 PetriNetUnfolderBase]: 3/62 cut-off events. [2023-08-03 22:01:46,728 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-03 22:01:46,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:01:46,729 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 22:01:46,729 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 22:01:46,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:01:46,729 INFO L85 PathProgramCache]: Analyzing trace with hash -751363425, now seen corresponding path program 1 times [2023-08-03 22:01:46,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:01:46,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548713980] [2023-08-03 22:01:46,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:01:46,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:01:46,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:01:47,347 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 22:01:47,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:01:47,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548713980] [2023-08-03 22:01:47,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548713980] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 22:01:47,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418288163] [2023-08-03 22:01:47,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:01:47,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:01:47,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:01:47,351 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 22:01:47,355 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 22:01:47,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:01:47,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-03 22:01:47,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 22:01:47,585 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-03 22:01:47,586 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 22:01:47,597 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-08-03 22:01:47,602 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-03 22:01:47,625 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 22:01:47,694 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 22:01:47,746 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 22:01:47,747 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 22:01:47,785 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_110 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#setPool~0#1.base| v_ArrVal_110) |c_~#iSet~0.base|) |c_~#iSet~0.offset|) (+ 2 |c_ULTIMATE.start_main_~i~0#1|))) is different from false [2023-08-03 22:01:47,795 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_110 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#setPool~0#1.base| v_ArrVal_110) |c_~#iSet~0.base|) |c_~#iSet~0.offset|) (+ 3 |c_ULTIMATE.start_main_~i~0#1|))) is different from false [2023-08-03 22:01:47,813 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2023-08-03 22:01:47,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418288163] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 22:01:47,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 22:01:47,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 12 [2023-08-03 22:01:47,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543205438] [2023-08-03 22:01:47,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 22:01:47,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-03 22:01:47,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:01:47,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-03 22:01:47,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=80, Unknown=2, NotChecked=38, Total=156 [2023-08-03 22:01:47,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 425 [2023-08-03 22:01:47,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 39 transitions, 126 flow. Second operand has 13 states, 13 states have (on average 142.84615384615384) internal successors, (1857), 13 states have internal predecessors, (1857), 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 22:01:47,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:01:47,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 425 [2023-08-03 22:01:47,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:01:48,932 INFO L124 PetriNetUnfolderBase]: 4677/7429 cut-off events. [2023-08-03 22:01:48,932 INFO L125 PetriNetUnfolderBase]: For 885/885 co-relation queries the response was YES. [2023-08-03 22:01:48,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15166 conditions, 7429 events. 4677/7429 cut-off events. For 885/885 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 42980 event pairs, 2064 based on Foata normal form. 0/5634 useless extension candidates. Maximal degree in co-relation 10999. Up to 6643 conditions per place. [2023-08-03 22:01:48,958 INFO L140 encePairwiseOnDemand]: 415/425 looper letters, 28 selfloop transitions, 8 changer transitions 66/105 dead transitions. [2023-08-03 22:01:48,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 105 transitions, 484 flow [2023-08-03 22:01:48,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-03 22:01:48,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-03 22:01:48,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1654 transitions. [2023-08-03 22:01:48,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3537967914438503 [2023-08-03 22:01:48,977 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1654 transitions. [2023-08-03 22:01:48,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1654 transitions. [2023-08-03 22:01:48,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:01:48,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1654 transitions. [2023-08-03 22:01:48,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 150.36363636363637) internal successors, (1654), 11 states have internal predecessors, (1654), 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 22:01:49,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 425.0) internal successors, (5100), 12 states have internal predecessors, (5100), 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 22:01:49,002 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 425.0) internal successors, (5100), 12 states have internal predecessors, (5100), 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 22:01:49,004 INFO L175 Difference]: Start difference. First operand has 40 places, 39 transitions, 126 flow. Second operand 11 states and 1654 transitions. [2023-08-03 22:01:49,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 105 transitions, 484 flow [2023-08-03 22:01:49,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 105 transitions, 468 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 22:01:49,012 INFO L231 Difference]: Finished difference. Result has 48 places, 26 transitions, 92 flow [2023-08-03 22:01:49,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=92, PETRI_PLACES=48, PETRI_TRANSITIONS=26} [2023-08-03 22:01:49,017 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 8 predicate places. [2023-08-03 22:01:49,017 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 26 transitions, 92 flow [2023-08-03 22:01:49,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 142.84615384615384) internal successors, (1857), 13 states have internal predecessors, (1857), 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 22:01:49,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:01:49,019 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2023-08-03 22:01:49,027 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 22:01:49,224 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 22:01:49,225 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 22:01:49,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:01:49,225 INFO L85 PathProgramCache]: Analyzing trace with hash 160395880, now seen corresponding path program 1 times [2023-08-03 22:01:49,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:01:49,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116467608] [2023-08-03 22:01:49,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:01:49,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:01:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:01:49,574 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 22:01:49,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:01:49,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116467608] [2023-08-03 22:01:49,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116467608] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 22:01:49,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146091332] [2023-08-03 22:01:49,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:01:49,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:01:49,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:01:49,581 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 22:01:49,584 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 22:01:49,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:01:49,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-03 22:01:49,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 22:01:49,714 INFO L322 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-08-03 22:01:49,714 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-08-03 22:01:49,739 INFO L322 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2023-08-03 22:01:49,740 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2023-08-03 22:01:49,746 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-08-03 22:01:49,753 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-08-03 22:01:49,808 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2023-08-03 22:01:49,811 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-08-03 22:01:49,845 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 22:01:49,888 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 22:01:49,926 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 22:01:49,926 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 22:01:49,952 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_192 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#checkPool~0#1.base| v_ArrVal_192) |c_~#iCheck~0.base|) |c_~#iCheck~0.offset|) (+ 2 |c_ULTIMATE.start_main_~i~0#1|))) is different from false [2023-08-03 22:01:49,980 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_192 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#checkPool~0#1.base| v_ArrVal_192) |c_~#iCheck~0.base|) |c_~#iCheck~0.offset|) 3)) is different from false [2023-08-03 22:01:49,981 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-08-03 22:01:49,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146091332] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 22:01:49,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 22:01:49,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2023-08-03 22:01:49,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095983148] [2023-08-03 22:01:49,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 22:01:49,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-03 22:01:49,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:01:49,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-03 22:01:49,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=135, Unknown=2, NotChecked=50, Total=240 [2023-08-03 22:01:49,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 425 [2023-08-03 22:01:49,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 26 transitions, 92 flow. Second operand has 16 states, 16 states have (on average 142.6875) internal successors, (2283), 16 states have internal predecessors, (2283), 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 22:01:49,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:01:49,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 425 [2023-08-03 22:01:49,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:01:50,310 INFO L124 PetriNetUnfolderBase]: 984/1590 cut-off events. [2023-08-03 22:01:50,311 INFO L125 PetriNetUnfolderBase]: For 211/211 co-relation queries the response was YES. [2023-08-03 22:01:50,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3517 conditions, 1590 events. 984/1590 cut-off events. For 211/211 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7192 event pairs, 962 based on Foata normal form. 9/1331 useless extension candidates. Maximal degree in co-relation 959. Up to 1447 conditions per place. [2023-08-03 22:01:50,319 INFO L140 encePairwiseOnDemand]: 421/425 looper letters, 20 selfloop transitions, 2 changer transitions 17/42 dead transitions. [2023-08-03 22:01:50,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 42 transitions, 214 flow [2023-08-03 22:01:50,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 22:01:50,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 22:01:50,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 742 transitions. [2023-08-03 22:01:50,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3491764705882353 [2023-08-03 22:01:50,322 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 742 transitions. [2023-08-03 22:01:50,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 742 transitions. [2023-08-03 22:01:50,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:01:50,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 742 transitions. [2023-08-03 22:01:50,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.4) internal successors, (742), 5 states have internal predecessors, (742), 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 22:01:50,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 425.0) internal successors, (2550), 6 states have internal predecessors, (2550), 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 22:01:50,329 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 425.0) internal successors, (2550), 6 states have internal predecessors, (2550), 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 22:01:50,329 INFO L175 Difference]: Start difference. First operand has 48 places, 26 transitions, 92 flow. Second operand 5 states and 742 transitions. [2023-08-03 22:01:50,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 42 transitions, 214 flow [2023-08-03 22:01:50,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 42 transitions, 212 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-03 22:01:50,331 INFO L231 Difference]: Finished difference. Result has 41 places, 25 transitions, 100 flow [2023-08-03 22:01:50,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=100, PETRI_PLACES=41, PETRI_TRANSITIONS=25} [2023-08-03 22:01:50,332 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-08-03 22:01:50,332 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 25 transitions, 100 flow [2023-08-03 22:01:50,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 142.6875) internal successors, (2283), 16 states have internal predecessors, (2283), 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 22:01:50,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:01:50,333 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:01:50,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-03 22:01:50,538 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,SelfDestructingSolverStorable2 [2023-08-03 22:01:50,539 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 22:01:50,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:01:50,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1185793033, now seen corresponding path program 1 times [2023-08-03 22:01:50,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:01:50,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765066072] [2023-08-03 22:01:50,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:01:50,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:01:50,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:01:50,950 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:01:50,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:01:50,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765066072] [2023-08-03 22:01:50,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765066072] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 22:01:50,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558975957] [2023-08-03 22:01:50,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:01:50,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:01:50,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:01:50,953 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 22:01:50,981 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 22:01:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:01:51,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-03 22:01:51,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 22:01:51,108 INFO L322 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-08-03 22:01:51,108 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-08-03 22:01:51,140 INFO L322 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2023-08-03 22:01:51,141 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2023-08-03 22:01:51,149 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-08-03 22:01:51,160 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-08-03 22:01:51,239 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2023-08-03 22:01:51,245 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-08-03 22:01:51,266 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 22:01:51,318 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 22:01:51,365 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 22:01:51,405 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:01:51,405 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 22:01:51,481 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_287 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#checkPool~0#1.base| v_ArrVal_287) |c_~#iCheck~0.base|) |c_~#iCheck~0.offset|) 3)) is different from false [2023-08-03 22:01:51,517 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-03 22:01:51,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558975957] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 22:01:51,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 22:01:51,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 18 [2023-08-03 22:01:51,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374486890] [2023-08-03 22:01:51,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 22:01:51,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-03 22:01:51,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:01:51,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-03 22:01:51,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=234, Unknown=6, NotChecked=32, Total=342 [2023-08-03 22:01:51,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 425 [2023-08-03 22:01:51,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 25 transitions, 100 flow. Second operand has 19 states, 19 states have (on average 139.89473684210526) internal successors, (2658), 19 states have internal predecessors, (2658), 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 22:01:51,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:01:51,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 425 [2023-08-03 22:01:51,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:01:52,009 INFO L124 PetriNetUnfolderBase]: 696/1129 cut-off events. [2023-08-03 22:01:52,010 INFO L125 PetriNetUnfolderBase]: For 699/699 co-relation queries the response was YES. [2023-08-03 22:01:52,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2783 conditions, 1129 events. 696/1129 cut-off events. For 699/699 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4784 event pairs, 130 based on Foata normal form. 108/1056 useless extension candidates. Maximal degree in co-relation 2763. Up to 533 conditions per place. [2023-08-03 22:01:52,014 INFO L140 encePairwiseOnDemand]: 416/425 looper letters, 0 selfloop transitions, 0 changer transitions 44/44 dead transitions. [2023-08-03 22:01:52,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 233 flow [2023-08-03 22:01:52,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 22:01:52,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 22:01:52,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 871 transitions. [2023-08-03 22:01:52,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3415686274509804 [2023-08-03 22:01:52,017 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 871 transitions. [2023-08-03 22:01:52,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 871 transitions. [2023-08-03 22:01:52,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:01:52,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 871 transitions. [2023-08-03 22:01:52,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 145.16666666666666) internal successors, (871), 6 states have internal predecessors, (871), 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 22:01:52,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 425.0) internal successors, (2975), 7 states have internal predecessors, (2975), 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 22:01:52,022 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 425.0) internal successors, (2975), 7 states have internal predecessors, (2975), 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 22:01:52,023 INFO L175 Difference]: Start difference. First operand has 41 places, 25 transitions, 100 flow. Second operand 6 states and 871 transitions. [2023-08-03 22:01:52,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 233 flow [2023-08-03 22:01:52,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 44 transitions, 218 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-03 22:01:52,026 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2023-08-03 22:01:52,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2023-08-03 22:01:52,027 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2023-08-03 22:01:52,027 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2023-08-03 22:01:52,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 139.89473684210526) internal successors, (2658), 19 states have internal predecessors, (2658), 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 22:01:52,028 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-03 22:01:52,028 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-03 22:01:52,034 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 22:01:52,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:01:52,234 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-03 22:01:52,234 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE,SAFE (1/2) [2023-08-03 22:01:52,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 211 transitions, 470 flow [2023-08-03 22:01:52,318 INFO L124 PetriNetUnfolderBase]: 149/1167 cut-off events. [2023-08-03 22:01:52,318 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-03 22:01:52,322 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 22:01:52,322 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 211 transitions, 470 flow [2023-08-03 22:01:52,326 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 197 places, 210 transitions, 464 flow [2023-08-03 22:01:52,326 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 22:01:52,326 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 197 places, 210 transitions, 464 flow [2023-08-03 22:01:52,326 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 197 places, 210 transitions, 464 flow [2023-08-03 22:01:52,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 210 transitions, 464 flow [2023-08-03 22:01:52,405 INFO L124 PetriNetUnfolderBase]: 149/1166 cut-off events. [2023-08-03 22:01:52,405 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2023-08-03 22:01:52,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1261 conditions, 1166 events. 149/1166 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 6365 event pairs, 1 based on Foata normal form. 0/1024 useless extension candidates. Maximal degree in co-relation 685. Up to 32 conditions per place. [2023-08-03 22:01:52,423 INFO L119 LiptonReduction]: Number of co-enabled transitions 6212 [2023-08-03 22:02:02,553 INFO L134 LiptonReduction]: Checked pairs total: 12150 [2023-08-03 22:02:02,553 INFO L136 LiptonReduction]: Total number of compositions: 219 [2023-08-03 22:02:02,554 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 22:02:02,555 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;@3d48d895, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 22:02:02,555 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 22:02:02,557 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 22:02:02,557 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-08-03 22:02:02,557 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 22:02:02,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:02:02,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 22:02:02,558 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 22:02:02,558 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:02:02,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1303260294, now seen corresponding path program 1 times [2023-08-03 22:02:02,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:02:02,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795957037] [2023-08-03 22:02:02,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:02:02,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:02:02,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:02:02,589 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 22:02:02,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:02:02,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795957037] [2023-08-03 22:02:02,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795957037] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:02:02,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:02:02,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 22:02:02,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138407864] [2023-08-03 22:02:02,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:02:02,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 22:02:02,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:02:02,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 22:02:02,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 22:02:02,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 430 [2023-08-03 22:02:02,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 120 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 22:02:02,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:02:02,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 430 [2023-08-03 22:02:02,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:02:03,101 INFO L124 PetriNetUnfolderBase]: 4447/6837 cut-off events. [2023-08-03 22:02:03,101 INFO L125 PetriNetUnfolderBase]: For 1289/1289 co-relation queries the response was YES. [2023-08-03 22:02:03,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14158 conditions, 6837 events. 4447/6837 cut-off events. For 1289/1289 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 37104 event pairs, 1440 based on Foata normal form. 0/5175 useless extension candidates. Maximal degree in co-relation 10038. Up to 6226 conditions per place. [2023-08-03 22:02:03,134 INFO L140 encePairwiseOnDemand]: 425/430 looper letters, 53 selfloop transitions, 3 changer transitions 0/61 dead transitions. [2023-08-03 22:02:03,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 61 transitions, 303 flow [2023-08-03 22:02:03,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 22:02:03,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 22:02:03,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2023-08-03 22:02:03,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46124031007751937 [2023-08-03 22:02:03,136 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 595 transitions. [2023-08-03 22:02:03,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 595 transitions. [2023-08-03 22:02:03,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:02:03,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 595 transitions. [2023-08-03 22:02:03,138 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 22:02:03,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 430.0) internal successors, (1720), 4 states have internal predecessors, (1720), 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 22:02:03,140 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 430.0) internal successors, (1720), 4 states have internal predecessors, (1720), 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 22:02:03,141 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 120 flow. Second operand 3 states and 595 transitions. [2023-08-03 22:02:03,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 61 transitions, 303 flow [2023-08-03 22:02:03,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 61 transitions, 299 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 22:02:03,153 INFO L231 Difference]: Finished difference. Result has 41 places, 40 transitions, 138 flow [2023-08-03 22:02:03,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=430, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=41, PETRI_TRANSITIONS=40} [2023-08-03 22:02:03,154 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-08-03 22:02:03,154 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 40 transitions, 138 flow [2023-08-03 22:02:03,154 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 22:02:03,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:02:03,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:02:03,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 22:02:03,155 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 22:02:03,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:02:03,155 INFO L85 PathProgramCache]: Analyzing trace with hash -979523793, now seen corresponding path program 1 times [2023-08-03 22:02:03,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:02:03,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50591720] [2023-08-03 22:02:03,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:02:03,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:02:03,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 22:02:03,187 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 22:02:03,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 22:02:03,205 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 22:02:03,205 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 22:02:03,205 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-03 22:02:03,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 22:02:03,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-03 22:02:03,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 22:02:03,206 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 22:02:03,206 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE,UNKNOWN,UNKNOWN (2/2) [2023-08-03 22:02:03,209 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 22:02:03,209 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 22:02:03,243 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 10:02:03 BasicIcfg [2023-08-03 22:02:03,243 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 22:02:03,243 INFO L158 Benchmark]: Toolchain (without parser) took 40165.81ms. Allocated memory was 323.0MB in the beginning and 585.1MB in the end (delta: 262.1MB). Free memory was 288.0MB in the beginning and 237.8MB in the end (delta: 50.2MB). Peak memory consumption was 314.9MB. Max. memory is 16.0GB. [2023-08-03 22:02:03,243 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 323.0MB. Free memory was 270.7MB in the beginning and 270.4MB in the end (delta: 257.7kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 22:02:03,244 INFO L158 Benchmark]: CACSL2BoogieTranslator took 535.73ms. Allocated memory is still 323.0MB. Free memory was 287.6MB in the beginning and 248.4MB in the end (delta: 39.2MB). Peak memory consumption was 39.8MB. Max. memory is 16.0GB. [2023-08-03 22:02:03,244 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.09ms. Allocated memory is still 323.0MB. Free memory was 248.4MB in the beginning and 245.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 22:02:03,244 INFO L158 Benchmark]: Boogie Preprocessor took 33.87ms. Allocated memory is still 323.0MB. Free memory was 245.9MB in the beginning and 243.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 22:02:03,244 INFO L158 Benchmark]: RCFGBuilder took 490.07ms. Allocated memory is still 323.0MB. Free memory was 243.6MB in the beginning and 224.1MB in the end (delta: 19.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-03 22:02:03,245 INFO L158 Benchmark]: TraceAbstraction took 39057.35ms. Allocated memory was 323.0MB in the beginning and 585.1MB in the end (delta: 262.1MB). Free memory was 223.2MB in the beginning and 237.8MB in the end (delta: -14.5MB). Peak memory consumption was 249.9MB. Max. memory is 16.0GB. [2023-08-03 22:02:03,246 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 323.0MB. Free memory was 270.7MB in the beginning and 270.4MB in the end (delta: 257.7kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 535.73ms. Allocated memory is still 323.0MB. Free memory was 287.6MB in the beginning and 248.4MB in the end (delta: 39.2MB). Peak memory consumption was 39.8MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 44.09ms. Allocated memory is still 323.0MB. Free memory was 248.4MB in the beginning and 245.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 33.87ms. Allocated memory is still 323.0MB. Free memory was 245.9MB in the beginning and 243.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 490.07ms. Allocated memory is still 323.0MB. Free memory was 243.6MB in the beginning and 224.1MB in the end (delta: 19.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 39057.35ms. Allocated memory was 323.0MB in the beginning and 585.1MB in the end (delta: 262.1MB). Free memory was 223.2MB in the beginning and 237.8MB in the end (delta: -14.5MB). Peak memory consumption was 249.9MB. 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: 10.6s, 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: 11.2s, 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 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.2s, 197 PlacesBefore, 39 PlacesAfterwards, 210 TransitionsBefore, 38 TransitionsAfterwards, 6212 CoEnabledTransitionPairs, 8 FixpointIterations, 71 TrivialSequentialCompositions, 90 ConcurrentSequentialCompositions, 13 TrivialYvCompositions, 31 ConcurrentYvCompositions, 14 ChoiceCompositions, 219 TotalNumberOfCompositions, 12150 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8942, independent: 8849, independent conditional: 0, independent unconditional: 8849, 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: 3718, independent: 3697, independent conditional: 0, independent unconditional: 3697, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 8942, independent: 5152, independent conditional: 0, independent unconditional: 5152, dependent: 72, dependent conditional: 0, dependent unconditional: 72, unknown: 3718, unknown conditional: 0, unknown unconditional: 3718] , Statistics on independence cache: Total cache size (in pairs): 118, Positive cache size: 111, Positive conditional cache size: 0, Positive unconditional cache size: 111, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, 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={57:56}, argv={57:56}, 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={57:56}, argv={57:56}, 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={57:56}, argv={57:56}, 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={57:56}, argv={57:56}, b=0, checkPool={14:0}, err=0, fprintf(stderr, "Error [%d] found creating set thread.\n", err)=53, 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={57:56}, argv={57:56}, b=0, checkPool={14:0}, err=0, fprintf(stderr, "Error [%d] found creating set thread.\n", err)=53, 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={57:56}, argv={57:56}, b=0, checkPool={14:0}, err=0, fprintf(stderr, "Error [%d] found creating set thread.\n", err)=53, 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}] - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency 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: 11.0s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 10.7s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 7 procedures, 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: 16.8s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 11.3s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 313 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 269 mSDsluCounter, 21 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 420 IncrementalHoareTripleChecker+Unchecked, 21 mSDsCounter, 75 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1101 IncrementalHoareTripleChecker+Invalid, 1597 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 75 mSolverCounterUnsat, 0 mSDtfsCounter, 1101 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 51 SyntacticMatches, 6 SemanticMatches, 53 ConstructedPredicates, 5 IntricatePredicates, 1 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=126occurred in iteration=0, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 108 ConstructedInterpolants, 21 QuantifiedInterpolants, 1371 SizeOfPredicates, 17 NumberOfNonLiveVariables, 730 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 9 InterpolantComputations, 0 PerfectInterpolantSequences, 25/75 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 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: 11.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 10.3s, 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=138occurred 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 22:02:03,268 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...