./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/check_removal_from_set_after_insertion.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/check_removal_from_set_after_insertion.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 07a8b8b198dffd8285677bd0bfdd16b4d1f780e3a9696ef3e27a077e8ff12a49 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-10 21:57:13,140 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-10 21:57:13,189 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-10 21:57:13,192 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-10 21:57:13,192 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-10 21:57:13,208 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-10 21:57:13,208 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-10 21:57:13,209 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-10 21:57:13,209 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-10 21:57:13,209 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-10 21:57:13,210 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-10 21:57:13,210 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-10 21:57:13,210 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-10 21:57:13,211 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-10 21:57:13,211 INFO L153 SettingsManager]: * Use SBE=true [2024-10-10 21:57:13,211 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-10 21:57:13,212 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-10 21:57:13,212 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-10 21:57:13,212 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-10 21:57:13,212 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-10 21:57:13,216 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-10 21:57:13,217 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-10 21:57:13,217 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-10 21:57:13,217 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-10 21:57:13,217 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-10 21:57:13,217 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-10 21:57:13,218 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-10 21:57:13,218 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-10 21:57:13,218 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-10 21:57:13,218 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-10 21:57:13,218 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-10 21:57:13,219 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-10 21:57:13,219 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 21:57:13,219 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-10 21:57:13,219 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-10 21:57:13,219 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-10 21:57:13,219 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-10 21:57:13,219 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-10 21:57:13,220 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-10 21:57:13,220 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-10 21:57:13,220 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-10 21:57:13,224 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-10 21:57:13,224 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 07a8b8b198dffd8285677bd0bfdd16b4d1f780e3a9696ef3e27a077e8ff12a49 [2024-10-10 21:57:13,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-10 21:57:13,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-10 21:57:13,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-10 21:57:13,447 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-10 21:57:13,447 INFO L274 PluginConnector]: CDTParser initialized [2024-10-10 21:57:13,448 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/check_removal_from_set_after_insertion.c [2024-10-10 21:57:14,849 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-10 21:57:15,104 INFO L384 CDTParser]: Found 1 translation units. [2024-10-10 21:57:15,105 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/check_removal_from_set_after_insertion.c [2024-10-10 21:57:15,118 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/a0b4965f3/a24ee929217c454f9a580ae253602434/FLAG6ab4cee8f [2024-10-10 21:57:15,480 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/a0b4965f3/a24ee929217c454f9a580ae253602434 [2024-10-10 21:57:15,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-10 21:57:15,488 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-10 21:57:15,489 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-10 21:57:15,494 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-10 21:57:15,498 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-10 21:57:15,503 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 09:57:15" (1/1) ... [2024-10-10 21:57:15,508 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@625db569 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:57:15, skipping insertion in model container [2024-10-10 21:57:15,508 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 09:57:15" (1/1) ... [2024-10-10 21:57:15,549 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-10 21:57:15,792 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/check_removal_from_set_after_insertion.c[342,355] [2024-10-10 21:57:15,823 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 21:57:15,833 INFO L200 MainTranslator]: Completed pre-run [2024-10-10 21:57:15,844 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/check_removal_from_set_after_insertion.c[342,355] [2024-10-10 21:57:15,860 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 21:57:15,875 INFO L204 MainTranslator]: Completed translation [2024-10-10 21:57:15,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:57:15 WrapperNode [2024-10-10 21:57:15,875 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-10 21:57:15,877 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-10 21:57:15,877 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-10 21:57:15,877 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-10 21:57:15,882 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:57:15" (1/1) ... [2024-10-10 21:57:15,889 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:57:15" (1/1) ... [2024-10-10 21:57:15,912 INFO L138 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 133 [2024-10-10 21:57:15,916 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-10 21:57:15,917 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-10 21:57:15,917 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-10 21:57:15,917 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-10 21:57:15,926 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:57:15" (1/1) ... [2024-10-10 21:57:15,926 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:57:15" (1/1) ... [2024-10-10 21:57:15,931 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:57:15" (1/1) ... [2024-10-10 21:57:15,945 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 3, 7]. 58 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 4 writes are split as follows [0, 1, 3]. [2024-10-10 21:57:15,945 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:57:15" (1/1) ... [2024-10-10 21:57:15,945 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:57:15" (1/1) ... [2024-10-10 21:57:15,954 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:57:15" (1/1) ... [2024-10-10 21:57:15,957 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:57:15" (1/1) ... [2024-10-10 21:57:15,959 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:57:15" (1/1) ... [2024-10-10 21:57:15,960 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:57:15" (1/1) ... [2024-10-10 21:57:15,962 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-10 21:57:15,962 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-10 21:57:15,963 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-10 21:57:15,963 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-10 21:57:15,963 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:57:15" (1/1) ... [2024-10-10 21:57:15,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 21:57:15,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:57:15,993 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-10 21:57:16,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-10 21:57:16,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-10 21:57:16,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-10 21:57:16,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-10 21:57:16,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-10 21:57:16,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-10 21:57:16,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-10 21:57:16,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-10 21:57:16,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-10 21:57:16,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-10 21:57:16,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-10 21:57:16,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-10 21:57:16,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-10 21:57:16,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-10 21:57:16,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-10 21:57:16,155 INFO L238 CfgBuilder]: Building ICFG [2024-10-10 21:57:16,157 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-10 21:57:16,336 INFO L? ?]: Removed 34 outVars from TransFormulas that were not future-live. [2024-10-10 21:57:16,340 INFO L287 CfgBuilder]: Performing block encoding [2024-10-10 21:57:16,371 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-10 21:57:16,372 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-10 21:57:16,372 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 09:57:16 BoogieIcfgContainer [2024-10-10 21:57:16,372 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-10 21:57:16,374 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-10 21:57:16,374 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-10 21:57:16,376 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-10 21:57:16,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 09:57:15" (1/3) ... [2024-10-10 21:57:16,377 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4fd4fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 09:57:16, skipping insertion in model container [2024-10-10 21:57:16,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:57:15" (2/3) ... [2024-10-10 21:57:16,378 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4fd4fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 09:57:16, skipping insertion in model container [2024-10-10 21:57:16,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 09:57:16" (3/3) ... [2024-10-10 21:57:16,379 INFO L112 eAbstractionObserver]: Analyzing ICFG check_removal_from_set_after_insertion.c [2024-10-10 21:57:16,392 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-10 21:57:16,393 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-10 21:57:16,444 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-10 21:57:16,450 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@7e88694a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-10 21:57:16,450 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-10 21:57:16,453 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 23 states have internal predecessors, (41), 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) [2024-10-10 21:57:16,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-10 21:57:16,458 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:57:16,459 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:57:16,459 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:57:16,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:57:16,463 INFO L85 PathProgramCache]: Analyzing trace with hash 272925399, now seen corresponding path program 1 times [2024-10-10 21:57:16,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:57:16,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751210155] [2024-10-10 21:57:16,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:57:16,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:57:16,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:16,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 21:57:16,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:57:16,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751210155] [2024-10-10 21:57:16,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751210155] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 21:57:16,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 21:57:16,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 21:57:16,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263004320] [2024-10-10 21:57:16,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 21:57:16,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 21:57:16,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:57:16,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 21:57:16,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 21:57:16,666 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 23 states have internal predecessors, (41), 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) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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) [2024-10-10 21:57:16,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:57:16,721 INFO L93 Difference]: Finished difference Result 47 states and 81 transitions. [2024-10-10 21:57:16,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 21:57:16,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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) Word has length 11 [2024-10-10 21:57:16,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:57:16,729 INFO L225 Difference]: With dead ends: 47 [2024-10-10 21:57:16,729 INFO L226 Difference]: Without dead ends: 23 [2024-10-10 21:57:16,731 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 21:57:16,734 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:57:16,735 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:57:16,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-10-10 21:57:16,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-10-10 21:57:16,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 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) [2024-10-10 21:57:16,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 32 transitions. [2024-10-10 21:57:16,809 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 32 transitions. Word has length 11 [2024-10-10 21:57:16,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:57:16,810 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 32 transitions. [2024-10-10 21:57:16,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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) [2024-10-10 21:57:16,810 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2024-10-10 21:57:16,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-10 21:57:16,812 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:57:16,812 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:57:16,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-10 21:57:16,813 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:57:16,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:57:16,819 INFO L85 PathProgramCache]: Analyzing trace with hash 410553975, now seen corresponding path program 1 times [2024-10-10 21:57:16,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:57:16,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915815895] [2024-10-10 21:57:16,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:57:16,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:57:16,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:16,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 21:57:16,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:57:16,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915815895] [2024-10-10 21:57:16,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915815895] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 21:57:16,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 21:57:16,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 21:57:16,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687977433] [2024-10-10 21:57:16,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 21:57:16,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 21:57:16,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:57:16,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 21:57:16,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 21:57:16,958 INFO L87 Difference]: Start difference. First operand 23 states and 32 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2024-10-10 21:57:17,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:57:17,016 INFO L93 Difference]: Finished difference Result 42 states and 59 transitions. [2024-10-10 21:57:17,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 21:57:17,017 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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) Word has length 12 [2024-10-10 21:57:17,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:57:17,017 INFO L225 Difference]: With dead ends: 42 [2024-10-10 21:57:17,017 INFO L226 Difference]: Without dead ends: 30 [2024-10-10 21:57:17,018 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 21:57:17,019 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 37 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:57:17,019 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 33 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:57:17,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-10-10 21:57:17,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 24. [2024-10-10 21:57:17,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.434782608695652) internal successors, (33), 23 states have internal predecessors, (33), 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) [2024-10-10 21:57:17,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 33 transitions. [2024-10-10 21:57:17,029 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 33 transitions. Word has length 12 [2024-10-10 21:57:17,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:57:17,029 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 33 transitions. [2024-10-10 21:57:17,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2024-10-10 21:57:17,029 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 33 transitions. [2024-10-10 21:57:17,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-10 21:57:17,030 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:57:17,030 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:57:17,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-10 21:57:17,030 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:57:17,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:57:17,031 INFO L85 PathProgramCache]: Analyzing trace with hash -29285378, now seen corresponding path program 1 times [2024-10-10 21:57:17,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:57:17,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486501173] [2024-10-10 21:57:17,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:57:17,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:57:17,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:17,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 21:57:17,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:57:17,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486501173] [2024-10-10 21:57:17,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486501173] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 21:57:17,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 21:57:17,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 21:57:17,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756111363] [2024-10-10 21:57:17,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 21:57:17,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 21:57:17,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:57:17,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 21:57:17,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-10 21:57:17,206 INFO L87 Difference]: Start difference. First operand 24 states and 33 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 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) [2024-10-10 21:57:17,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:57:17,254 INFO L93 Difference]: Finished difference Result 61 states and 85 transitions. [2024-10-10 21:57:17,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 21:57:17,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 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) Word has length 18 [2024-10-10 21:57:17,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:57:17,256 INFO L225 Difference]: With dead ends: 61 [2024-10-10 21:57:17,256 INFO L226 Difference]: Without dead ends: 42 [2024-10-10 21:57:17,256 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-10 21:57:17,257 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 23 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:57:17,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 98 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:57:17,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-10-10 21:57:17,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2024-10-10 21:57:17,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 29 states have internal predecessors, (41), 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) [2024-10-10 21:57:17,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 41 transitions. [2024-10-10 21:57:17,267 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 41 transitions. Word has length 18 [2024-10-10 21:57:17,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:57:17,267 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 41 transitions. [2024-10-10 21:57:17,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 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) [2024-10-10 21:57:17,268 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2024-10-10 21:57:17,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-10 21:57:17,268 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:57:17,268 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:57:17,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-10 21:57:17,268 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:57:17,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:57:17,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1590182388, now seen corresponding path program 1 times [2024-10-10 21:57:17,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:57:17,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553457627] [2024-10-10 21:57:17,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:57:17,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:57:17,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:17,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-10 21:57:17,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:57:17,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553457627] [2024-10-10 21:57:17,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553457627] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 21:57:17,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 21:57:17,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 21:57:17,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497657379] [2024-10-10 21:57:17,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 21:57:17,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 21:57:17,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:57:17,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 21:57:17,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 21:57:17,326 INFO L87 Difference]: Start difference. First operand 30 states and 41 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2024-10-10 21:57:17,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:57:17,350 INFO L93 Difference]: Finished difference Result 41 states and 55 transitions. [2024-10-10 21:57:17,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 21:57:17,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) Word has length 18 [2024-10-10 21:57:17,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:57:17,352 INFO L225 Difference]: With dead ends: 41 [2024-10-10 21:57:17,352 INFO L226 Difference]: Without dead ends: 32 [2024-10-10 21:57:17,353 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 21:57:17,357 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 19 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:57:17,357 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 29 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:57:17,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-10-10 21:57:17,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-10-10 21:57:17,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 31 states have internal predecessors, (42), 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) [2024-10-10 21:57:17,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2024-10-10 21:57:17,366 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 18 [2024-10-10 21:57:17,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:57:17,367 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2024-10-10 21:57:17,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2024-10-10 21:57:17,370 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2024-10-10 21:57:17,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-10 21:57:17,370 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:57:17,370 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:57:17,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-10 21:57:17,371 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:57:17,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:57:17,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1025672490, now seen corresponding path program 1 times [2024-10-10 21:57:17,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:57:17,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718589536] [2024-10-10 21:57:17,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:57:17,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:57:17,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:17,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-10 21:57:17,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:57:17,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718589536] [2024-10-10 21:57:17,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718589536] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:57:17,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115191448] [2024-10-10 21:57:17,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:57:17,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:57:17,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:57:17,498 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:57:17,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-10 21:57:17,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:17,581 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-10 21:57:17,584 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:57:17,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-10 21:57:17,632 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:57:17,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-10 21:57:17,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115191448] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:57:17,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:57:17,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2024-10-10 21:57:17,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999153096] [2024-10-10 21:57:17,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:57:17,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-10 21:57:17,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:57:17,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-10 21:57:17,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-10-10 21:57:17,654 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 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) [2024-10-10 21:57:17,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:57:17,806 INFO L93 Difference]: Finished difference Result 105 states and 140 transitions. [2024-10-10 21:57:17,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-10 21:57:17,807 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 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) Word has length 22 [2024-10-10 21:57:17,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:57:17,808 INFO L225 Difference]: With dead ends: 105 [2024-10-10 21:57:17,808 INFO L226 Difference]: Without dead ends: 76 [2024-10-10 21:57:17,809 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=125, Unknown=0, NotChecked=0, Total=210 [2024-10-10 21:57:17,810 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 86 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 21:57:17,811 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 56 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 21:57:17,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-10-10 21:57:17,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 43. [2024-10-10 21:57:17,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.3095238095238095) internal successors, (55), 42 states have internal predecessors, (55), 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) [2024-10-10 21:57:17,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2024-10-10 21:57:17,824 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 55 transitions. Word has length 22 [2024-10-10 21:57:17,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:57:17,824 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 55 transitions. [2024-10-10 21:57:17,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 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) [2024-10-10 21:57:17,824 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 55 transitions. [2024-10-10 21:57:17,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-10 21:57:17,825 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:57:17,825 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:57:17,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-10 21:57:18,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:57:18,030 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:57:18,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:57:18,031 INFO L85 PathProgramCache]: Analyzing trace with hash 521152929, now seen corresponding path program 1 times [2024-10-10 21:57:18,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:57:18,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185854063] [2024-10-10 21:57:18,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:57:18,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:57:18,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:18,167 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-10 21:57:18,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:57:18,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185854063] [2024-10-10 21:57:18,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185854063] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:57:18,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578348118] [2024-10-10 21:57:18,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:57:18,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:57:18,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:57:18,173 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:57:18,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-10 21:57:18,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:18,291 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-10 21:57:18,292 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:57:18,383 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-10 21:57:18,383 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:57:18,559 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-10 21:57:18,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578348118] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:57:18,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:57:18,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-10-10 21:57:18,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790084708] [2024-10-10 21:57:18,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:57:18,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-10 21:57:18,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:57:18,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-10 21:57:18,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=142, Unknown=0, NotChecked=0, Total=272 [2024-10-10 21:57:18,562 INFO L87 Difference]: Start difference. First operand 43 states and 55 transitions. Second operand has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 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) [2024-10-10 21:57:18,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:57:18,641 INFO L93 Difference]: Finished difference Result 88 states and 118 transitions. [2024-10-10 21:57:18,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-10 21:57:18,642 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 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) Word has length 28 [2024-10-10 21:57:18,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:57:18,643 INFO L225 Difference]: With dead ends: 88 [2024-10-10 21:57:18,643 INFO L226 Difference]: Without dead ends: 51 [2024-10-10 21:57:18,644 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=130, Invalid=142, Unknown=0, NotChecked=0, Total=272 [2024-10-10 21:57:18,644 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 5 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 21:57:18,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 68 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 21:57:18,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-10-10 21:57:18,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2024-10-10 21:57:18,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.2708333333333333) internal successors, (61), 48 states have internal predecessors, (61), 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) [2024-10-10 21:57:18,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 61 transitions. [2024-10-10 21:57:18,656 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 61 transitions. Word has length 28 [2024-10-10 21:57:18,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:57:18,656 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 61 transitions. [2024-10-10 21:57:18,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 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) [2024-10-10 21:57:18,656 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 61 transitions. [2024-10-10 21:57:18,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-10 21:57:18,657 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:57:18,657 INFO L215 NwaCegarLoop]: trace histogram [10, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:57:18,673 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-10 21:57:18,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:57:18,858 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:57:18,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:57:18,859 INFO L85 PathProgramCache]: Analyzing trace with hash -690598495, now seen corresponding path program 2 times [2024-10-10 21:57:18,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:57:18,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328011520] [2024-10-10 21:57:18,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:57:18,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:57:18,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:19,127 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-10 21:57:19,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:57:19,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328011520] [2024-10-10 21:57:19,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328011520] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:57:19,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735770888] [2024-10-10 21:57:19,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 21:57:19,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:57:19,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:57:19,130 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:57:19,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-10 21:57:19,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-10 21:57:19,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:57:19,227 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-10 21:57:19,229 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:57:19,381 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-10 21:57:19,382 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:57:19,576 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-10 21:57:19,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735770888] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:57:19,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:57:19,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2024-10-10 21:57:19,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532700221] [2024-10-10 21:57:19,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:57:19,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-10-10 21:57:19,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:57:19,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-10-10 21:57:19,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=550, Invalid=640, Unknown=0, NotChecked=0, Total=1190 [2024-10-10 21:57:19,579 INFO L87 Difference]: Start difference. First operand 49 states and 61 transitions. Second operand has 35 states, 35 states have (on average 1.6) internal successors, (56), 34 states have internal predecessors, (56), 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) [2024-10-10 21:57:19,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:57:19,660 INFO L93 Difference]: Finished difference Result 100 states and 136 transitions. [2024-10-10 21:57:19,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-10 21:57:19,661 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.6) internal successors, (56), 34 states have internal predecessors, (56), 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) Word has length 34 [2024-10-10 21:57:19,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:57:19,662 INFO L225 Difference]: With dead ends: 100 [2024-10-10 21:57:19,662 INFO L226 Difference]: Without dead ends: 63 [2024-10-10 21:57:19,662 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=550, Invalid=640, Unknown=0, NotChecked=0, Total=1190 [2024-10-10 21:57:19,663 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 8 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 21:57:19,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 78 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 21:57:19,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-10-10 21:57:19,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2024-10-10 21:57:19,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 60 states have internal predecessors, (73), 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) [2024-10-10 21:57:19,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2024-10-10 21:57:19,671 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 34 [2024-10-10 21:57:19,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:57:19,671 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2024-10-10 21:57:19,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.6) internal successors, (56), 34 states have internal predecessors, (56), 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) [2024-10-10 21:57:19,671 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2024-10-10 21:57:19,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-10 21:57:19,672 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:57:19,672 INFO L215 NwaCegarLoop]: trace histogram [22, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:57:19,685 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-10 21:57:19,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:57:19,873 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:57:19,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:57:19,873 INFO L85 PathProgramCache]: Analyzing trace with hash 773952929, now seen corresponding path program 3 times [2024-10-10 21:57:19,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:57:19,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321291525] [2024-10-10 21:57:19,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:57:19,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:57:19,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:20,490 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-10 21:57:20,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:57:20,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321291525] [2024-10-10 21:57:20,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321291525] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:57:20,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057851446] [2024-10-10 21:57:20,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-10 21:57:20,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:57:20,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:57:20,495 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:57:20,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-10 21:57:20,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-10 21:57:20,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:57:20,594 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-10 21:57:20,596 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:57:20,684 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-10-10 21:57:20,685 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:57:20,755 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-10-10 21:57:20,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057851446] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:57:20,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:57:20,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 4, 4] total 30 [2024-10-10 21:57:20,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601516134] [2024-10-10 21:57:20,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:57:20,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-10 21:57:20,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:57:20,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-10 21:57:20,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=605, Unknown=0, NotChecked=0, Total=930 [2024-10-10 21:57:20,758 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand has 31 states, 31 states have (on average 2.129032258064516) internal successors, (66), 30 states have internal predecessors, (66), 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) [2024-10-10 21:57:21,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:57:21,402 INFO L93 Difference]: Finished difference Result 358 states and 440 transitions. [2024-10-10 21:57:21,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-10 21:57:21,403 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.129032258064516) internal successors, (66), 30 states have internal predecessors, (66), 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) Word has length 46 [2024-10-10 21:57:21,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:57:21,404 INFO L225 Difference]: With dead ends: 358 [2024-10-10 21:57:21,404 INFO L226 Difference]: Without dead ends: 321 [2024-10-10 21:57:21,406 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=935, Invalid=2035, Unknown=0, NotChecked=0, Total=2970 [2024-10-10 21:57:21,406 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 797 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-10 21:57:21,407 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [797 Valid, 152 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-10 21:57:21,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2024-10-10 21:57:21,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 96. [2024-10-10 21:57:21,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.231578947368421) internal successors, (117), 95 states have internal predecessors, (117), 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) [2024-10-10 21:57:21,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 117 transitions. [2024-10-10 21:57:21,420 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 117 transitions. Word has length 46 [2024-10-10 21:57:21,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:57:21,420 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 117 transitions. [2024-10-10 21:57:21,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.129032258064516) internal successors, (66), 30 states have internal predecessors, (66), 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) [2024-10-10 21:57:21,420 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 117 transitions. [2024-10-10 21:57:21,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-10 21:57:21,421 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:57:21,421 INFO L215 NwaCegarLoop]: trace histogram [23, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:57:21,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-10 21:57:21,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-10 21:57:21,626 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:57:21,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:57:21,626 INFO L85 PathProgramCache]: Analyzing trace with hash -579863348, now seen corresponding path program 1 times [2024-10-10 21:57:21,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:57:21,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914407072] [2024-10-10 21:57:21,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:57:21,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:57:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:21,770 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2024-10-10 21:57:21,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:57:21,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914407072] [2024-10-10 21:57:21,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914407072] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 21:57:21,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 21:57:21,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-10 21:57:21,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641210911] [2024-10-10 21:57:21,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 21:57:21,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 21:57:21,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:57:21,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 21:57:21,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-10 21:57:21,773 INFO L87 Difference]: Start difference. First operand 96 states and 117 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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) [2024-10-10 21:57:21,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:57:21,804 INFO L93 Difference]: Finished difference Result 140 states and 176 transitions. [2024-10-10 21:57:21,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 21:57:21,805 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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) Word has length 65 [2024-10-10 21:57:21,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:57:21,806 INFO L225 Difference]: With dead ends: 140 [2024-10-10 21:57:21,806 INFO L226 Difference]: Without dead ends: 102 [2024-10-10 21:57:21,806 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-10 21:57:21,807 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:57:21,807 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:57:21,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-10-10 21:57:21,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-10-10 21:57:21,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.2178217821782178) internal successors, (123), 101 states have internal predecessors, (123), 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) [2024-10-10 21:57:21,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 123 transitions. [2024-10-10 21:57:21,821 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 123 transitions. Word has length 65 [2024-10-10 21:57:21,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:57:21,821 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 123 transitions. [2024-10-10 21:57:21,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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) [2024-10-10 21:57:21,821 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 123 transitions. [2024-10-10 21:57:21,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-10 21:57:21,823 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:57:21,823 INFO L215 NwaCegarLoop]: trace histogram [23, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:57:21,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-10 21:57:21,823 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:57:21,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:57:21,824 INFO L85 PathProgramCache]: Analyzing trace with hash -597335259, now seen corresponding path program 1 times [2024-10-10 21:57:21,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:57:21,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655326716] [2024-10-10 21:57:21,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:57:21,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:57:21,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:22,487 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-10-10 21:57:22,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:57:22,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655326716] [2024-10-10 21:57:22,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655326716] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:57:22,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241627072] [2024-10-10 21:57:22,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:57:22,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:57:22,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:57:22,493 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:57:22,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-10 21:57:22,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:22,659 INFO L255 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-10 21:57:22,661 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:57:23,301 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-10-10 21:57:23,302 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:57:24,100 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-10-10 21:57:24,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241627072] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:57:24,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:57:24,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 73 [2024-10-10 21:57:24,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536550210] [2024-10-10 21:57:24,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:57:24,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-10-10 21:57:24,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:57:24,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-10-10 21:57:24,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2448, Invalid=2954, Unknown=0, NotChecked=0, Total=5402 [2024-10-10 21:57:24,105 INFO L87 Difference]: Start difference. First operand 102 states and 123 transitions. Second operand has 74 states, 74 states have (on average 1.3243243243243243) internal successors, (98), 73 states have internal predecessors, (98), 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) [2024-10-10 21:57:24,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:57:24,206 INFO L93 Difference]: Finished difference Result 206 states and 273 transitions. [2024-10-10 21:57:24,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-10-10 21:57:24,207 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.3243243243243243) internal successors, (98), 73 states have internal predecessors, (98), 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) Word has length 65 [2024-10-10 21:57:24,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:57:24,208 INFO L225 Difference]: With dead ends: 206 [2024-10-10 21:57:24,208 INFO L226 Difference]: Without dead ends: 129 [2024-10-10 21:57:24,209 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2230 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2448, Invalid=2954, Unknown=0, NotChecked=0, Total=5402 [2024-10-10 21:57:24,209 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 5 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 21:57:24,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 77 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 21:57:24,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-10-10 21:57:24,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 127. [2024-10-10 21:57:24,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.1746031746031746) internal successors, (148), 126 states have internal predecessors, (148), 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) [2024-10-10 21:57:24,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 148 transitions. [2024-10-10 21:57:24,221 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 148 transitions. Word has length 65 [2024-10-10 21:57:24,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:57:24,221 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 148 transitions. [2024-10-10 21:57:24,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.3243243243243243) internal successors, (98), 73 states have internal predecessors, (98), 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) [2024-10-10 21:57:24,221 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 148 transitions. [2024-10-10 21:57:24,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-10 21:57:24,222 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:57:24,222 INFO L215 NwaCegarLoop]: trace histogram [48, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:57:24,236 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-10 21:57:24,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-10 21:57:24,423 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:57:24,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:57:24,424 INFO L85 PathProgramCache]: Analyzing trace with hash -878508347, now seen corresponding path program 2 times [2024-10-10 21:57:24,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:57:24,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291686459] [2024-10-10 21:57:24,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:57:24,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:57:24,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:26,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-10-10 21:57:26,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:57:26,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291686459] [2024-10-10 21:57:26,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291686459] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:57:26,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778475870] [2024-10-10 21:57:26,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 21:57:26,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:57:26,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:57:26,574 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:57:26,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-10 21:57:26,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-10 21:57:26,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:57:26,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 979 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-10-10 21:57:26,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:57:28,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-10-10 21:57:28,022 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:57:30,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-10-10 21:57:30,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778475870] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:57:30,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:57:30,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 148 [2024-10-10 21:57:30,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946935097] [2024-10-10 21:57:30,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:57:30,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2024-10-10 21:57:30,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:57:30,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2024-10-10 21:57:30,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9898, Invalid=12154, Unknown=0, NotChecked=0, Total=22052 [2024-10-10 21:57:30,752 INFO L87 Difference]: Start difference. First operand 127 states and 148 transitions. Second operand has 149 states, 149 states have (on average 1.1610738255033557) internal successors, (173), 148 states have internal predecessors, (173), 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) [2024-10-10 21:57:30,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:57:30,976 INFO L93 Difference]: Finished difference Result 256 states and 348 transitions. [2024-10-10 21:57:30,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2024-10-10 21:57:30,977 INFO L78 Accepts]: Start accepts. Automaton has has 149 states, 149 states have (on average 1.1610738255033557) internal successors, (173), 148 states have internal predecessors, (173), 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) Word has length 90 [2024-10-10 21:57:30,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:57:30,978 INFO L225 Difference]: With dead ends: 256 [2024-10-10 21:57:30,978 INFO L226 Difference]: Without dead ends: 179 [2024-10-10 21:57:30,982 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9455 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=9898, Invalid=12154, Unknown=0, NotChecked=0, Total=22052 [2024-10-10 21:57:30,983 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 5 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 21:57:30,983 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 125 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 21:57:30,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-10-10 21:57:30,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2024-10-10 21:57:30,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.125) internal successors, (198), 176 states have internal predecessors, (198), 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) [2024-10-10 21:57:30,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 198 transitions. [2024-10-10 21:57:30,998 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 198 transitions. Word has length 90 [2024-10-10 21:57:30,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:57:30,998 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 198 transitions. [2024-10-10 21:57:30,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 149 states have (on average 1.1610738255033557) internal successors, (173), 148 states have internal predecessors, (173), 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) [2024-10-10 21:57:30,998 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 198 transitions. [2024-10-10 21:57:30,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-10-10 21:57:30,999 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:57:31,000 INFO L215 NwaCegarLoop]: trace histogram [98, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:57:31,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-10 21:57:31,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-10 21:57:31,229 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:57:31,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:57:31,230 INFO L85 PathProgramCache]: Analyzing trace with hash 598225605, now seen corresponding path program 3 times [2024-10-10 21:57:31,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:57:31,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833539786] [2024-10-10 21:57:31,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:57:31,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:57:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:37,534 INFO L134 CoverageAnalysis]: Checked inductivity of 4895 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-10-10 21:57:37,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:57:37,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833539786] [2024-10-10 21:57:37,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833539786] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:57:37,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785377258] [2024-10-10 21:57:37,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-10 21:57:37,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:57:37,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:57:37,536 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:57:37,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-10 21:57:37,780 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-10 21:57:37,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:57:37,782 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-10 21:57:37,785 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:57:38,013 INFO L134 CoverageAnalysis]: Checked inductivity of 4895 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4888 trivial. 0 not checked. [2024-10-10 21:57:38,014 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:57:38,485 INFO L134 CoverageAnalysis]: Checked inductivity of 4895 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4888 trivial. 0 not checked. [2024-10-10 21:57:38,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785377258] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:57:38,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:57:38,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 7, 7] total 112 [2024-10-10 21:57:38,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415739617] [2024-10-10 21:57:38,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:57:38,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2024-10-10 21:57:38,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:57:38,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2024-10-10 21:57:38,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5905, Invalid=6751, Unknown=0, NotChecked=0, Total=12656 [2024-10-10 21:57:38,490 INFO L87 Difference]: Start difference. First operand 177 states and 198 transitions. Second operand has 113 states, 113 states have (on average 1.5132743362831858) internal successors, (171), 112 states have internal predecessors, (171), 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) [2024-10-10 21:58:02,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:58:02,737 INFO L93 Difference]: Finished difference Result 1994 states and 2548 transitions. [2024-10-10 21:58:02,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 314 states. [2024-10-10 21:58:02,738 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 1.5132743362831858) internal successors, (171), 112 states have internal predecessors, (171), 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) Word has length 140 [2024-10-10 21:58:02,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:58:02,743 INFO L225 Difference]: With dead ends: 1994 [2024-10-10 21:58:02,744 INFO L226 Difference]: Without dead ends: 1917 [2024-10-10 21:58:02,755 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 683 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 416 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52676 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=54913, Invalid=119393, Unknown=0, NotChecked=0, Total=174306 [2024-10-10 21:58:02,756 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 6398 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 1818 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6398 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 2944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1818 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-10 21:58:02,756 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6398 Valid, 578 Invalid, 2944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1818 Valid, 1126 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-10 21:58:02,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1917 states. [2024-10-10 21:58:02,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1917 to 778. [2024-10-10 21:58:02,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 777 states have (on average 1.2831402831402832) internal successors, (997), 777 states have internal predecessors, (997), 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) [2024-10-10 21:58:02,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 997 transitions. [2024-10-10 21:58:02,940 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 997 transitions. Word has length 140 [2024-10-10 21:58:02,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:58:02,941 INFO L471 AbstractCegarLoop]: Abstraction has 778 states and 997 transitions. [2024-10-10 21:58:02,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 1.5132743362831858) internal successors, (171), 112 states have internal predecessors, (171), 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) [2024-10-10 21:58:02,941 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 997 transitions. [2024-10-10 21:58:02,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-10-10 21:58:02,942 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:58:02,942 INFO L215 NwaCegarLoop]: trace histogram [103, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:58:02,956 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-10 21:58:03,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:58:03,143 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:58:03,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:58:03,143 INFO L85 PathProgramCache]: Analyzing trace with hash -135265976, now seen corresponding path program 4 times [2024-10-10 21:58:03,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:58:03,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887102604] [2024-10-10 21:58:03,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:58:03,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:58:03,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:58:03,312 INFO L134 CoverageAnalysis]: Checked inductivity of 5408 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5403 trivial. 0 not checked. [2024-10-10 21:58:03,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:58:03,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887102604] [2024-10-10 21:58:03,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887102604] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 21:58:03,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 21:58:03,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 21:58:03,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695388105] [2024-10-10 21:58:03,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 21:58:03,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 21:58:03,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:58:03,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 21:58:03,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 21:58:03,314 INFO L87 Difference]: Start difference. First operand 778 states and 997 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2024-10-10 21:58:03,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:58:03,444 INFO L93 Difference]: Finished difference Result 1289 states and 1709 transitions. [2024-10-10 21:58:03,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 21:58:03,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) Word has length 149 [2024-10-10 21:58:03,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:58:03,449 INFO L225 Difference]: With dead ends: 1289 [2024-10-10 21:58:03,449 INFO L226 Difference]: Without dead ends: 778 [2024-10-10 21:58:03,451 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 21:58:03,451 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 4 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:58:03,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 39 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:58:03,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2024-10-10 21:58:03,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 582. [2024-10-10 21:58:03,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 581 states have (on average 1.2048192771084338) internal successors, (700), 581 states have internal predecessors, (700), 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) [2024-10-10 21:58:03,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 700 transitions. [2024-10-10 21:58:03,538 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 700 transitions. Word has length 149 [2024-10-10 21:58:03,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:58:03,539 INFO L471 AbstractCegarLoop]: Abstraction has 582 states and 700 transitions. [2024-10-10 21:58:03,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2024-10-10 21:58:03,539 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 700 transitions. [2024-10-10 21:58:03,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-10-10 21:58:03,540 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:58:03,540 INFO L215 NwaCegarLoop]: trace histogram [103, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:58:03,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-10 21:58:03,540 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:58:03,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:58:03,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1156334330, now seen corresponding path program 1 times [2024-10-10 21:58:03,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:58:03,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753932816] [2024-10-10 21:58:03,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:58:03,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:58:03,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:58:10,255 INFO L134 CoverageAnalysis]: Checked inductivity of 5408 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-10 21:58:10,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:58:10,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753932816] [2024-10-10 21:58:10,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753932816] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:58:10,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855823240] [2024-10-10 21:58:10,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:58:10,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:58:10,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:58:10,258 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:58:10,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-10 21:58:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:58:10,759 INFO L255 TraceCheckSpWp]: Trace formula consists of 1818 conjuncts, 106 conjuncts are in the unsatisfiable core [2024-10-10 21:58:10,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:58:14,617 INFO L134 CoverageAnalysis]: Checked inductivity of 5408 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-10 21:58:14,617 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:58:26,298 INFO L134 CoverageAnalysis]: Checked inductivity of 5408 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-10 21:58:26,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855823240] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:58:26,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:58:26,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105, 105] total 313 [2024-10-10 21:58:26,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751248159] [2024-10-10 21:58:26,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:58:26,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 314 states [2024-10-10 21:58:26,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:58:26,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 314 interpolants. [2024-10-10 21:58:26,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43888, Invalid=54394, Unknown=0, NotChecked=0, Total=98282 [2024-10-10 21:58:26,314 INFO L87 Difference]: Start difference. First operand 582 states and 700 transitions. Second operand has 314 states, 314 states have (on average 1.0796178343949046) internal successors, (339), 313 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:58:27,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:58:27,082 INFO L93 Difference]: Finished difference Result 1167 states and 1508 transitions. [2024-10-10 21:58:27,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2024-10-10 21:58:27,083 INFO L78 Accepts]: Start accepts. Automaton has has 314 states, 314 states have (on average 1.0796178343949046) internal successors, (339), 313 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2024-10-10 21:58:27,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:58:27,085 INFO L225 Difference]: With dead ends: 1167 [2024-10-10 21:58:27,086 INFO L226 Difference]: Without dead ends: 690 [2024-10-10 21:58:27,089 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 312 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42950 ImplicationChecksByTransitivity, 19.2s TimeCoverageRelationStatistics Valid=43888, Invalid=54394, Unknown=0, NotChecked=0, Total=98282 [2024-10-10 21:58:27,090 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 5 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-10 21:58:27,090 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 95 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-10 21:58:27,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2024-10-10 21:58:27,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 687. [2024-10-10 21:58:27,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 686 states have (on average 1.1734693877551021) internal successors, (805), 686 states have internal predecessors, (805), 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) [2024-10-10 21:58:27,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 805 transitions. [2024-10-10 21:58:27,171 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 805 transitions. Word has length 149 [2024-10-10 21:58:27,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:58:27,171 INFO L471 AbstractCegarLoop]: Abstraction has 687 states and 805 transitions. [2024-10-10 21:58:27,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 314 states, 314 states have (on average 1.0796178343949046) internal successors, (339), 313 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:58:27,172 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 805 transitions. [2024-10-10 21:58:27,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-10-10 21:58:27,174 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:58:27,174 INFO L215 NwaCegarLoop]: trace histogram [208, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:58:27,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-10 21:58:27,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-10 21:58:27,378 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:58:27,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:58:27,379 INFO L85 PathProgramCache]: Analyzing trace with hash -419680090, now seen corresponding path program 2 times [2024-10-10 21:58:27,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:58:27,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37814722] [2024-10-10 21:58:27,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:58:27,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:58:27,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:58:50,420 INFO L134 CoverageAnalysis]: Checked inductivity of 21788 backedges. 0 proven. 21736 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-10 21:58:50,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:58:50,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37814722] [2024-10-10 21:58:50,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37814722] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:58:50,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468633274] [2024-10-10 21:58:50,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 21:58:50,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:58:50,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:58:50,423 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:58:50,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process