./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/max10-1.i --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/reducercommutativity/max10-1.i -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 1223a7fef027dae15fda123c8ce40ec49dc779b7d5d627ded9a670697417439e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-10 21:57:51,903 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-10 21:57:51,962 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-10 21:57:51,967 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-10 21:57:51,968 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-10 21:57:51,989 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-10 21:57:51,989 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-10 21:57:51,990 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-10 21:57:51,990 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-10 21:57:51,991 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-10 21:57:51,991 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-10 21:57:51,992 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-10 21:57:51,992 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-10 21:57:51,994 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-10 21:57:51,994 INFO L153 SettingsManager]: * Use SBE=true [2024-10-10 21:57:51,994 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-10 21:57:51,994 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-10 21:57:51,995 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-10 21:57:51,995 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-10 21:57:51,995 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-10 21:57:51,995 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-10 21:57:51,996 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-10 21:57:51,996 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-10 21:57:51,999 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-10 21:57:51,999 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-10 21:57:51,999 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-10 21:57:51,999 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-10 21:57:51,999 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-10 21:57:52,000 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-10 21:57:52,000 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-10 21:57:52,000 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-10 21:57:52,000 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-10 21:57:52,000 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 21:57:52,001 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-10 21:57:52,001 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-10 21:57:52,001 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-10 21:57:52,001 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-10 21:57:52,001 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-10 21:57:52,001 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-10 21:57:52,002 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-10 21:57:52,002 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-10 21:57:52,002 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-10 21:57:52,003 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1223a7fef027dae15fda123c8ce40ec49dc779b7d5d627ded9a670697417439e [2024-10-10 21:57:52,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-10 21:57:52,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-10 21:57:52,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-10 21:57:52,306 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-10 21:57:52,307 INFO L274 PluginConnector]: CDTParser initialized [2024-10-10 21:57:52,308 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/max10-1.i [2024-10-10 21:57:53,693 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-10 21:57:53,831 INFO L384 CDTParser]: Found 1 translation units. [2024-10-10 21:57:53,831 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/max10-1.i [2024-10-10 21:57:53,838 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/3c2a978b0/ad1345f918224bb6bf2ea0334b87488a/FLAGb5f5f586b [2024-10-10 21:57:53,851 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/3c2a978b0/ad1345f918224bb6bf2ea0334b87488a [2024-10-10 21:57:53,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-10 21:57:53,854 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-10 21:57:53,855 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-10 21:57:53,855 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-10 21:57:53,863 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-10 21:57:53,864 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 09:57:53" (1/1) ... [2024-10-10 21:57:53,867 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27e3e8df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:57:53, skipping insertion in model container [2024-10-10 21:57:53,867 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 09:57:53" (1/1) ... [2024-10-10 21:57:53,888 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-10 21:57:54,040 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/reducercommutativity/max10-1.i[1290,1303] [2024-10-10 21:57:54,044 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 21:57:54,051 INFO L200 MainTranslator]: Completed pre-run [2024-10-10 21:57:54,071 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/reducercommutativity/max10-1.i[1290,1303] [2024-10-10 21:57:54,074 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 21:57:54,094 INFO L204 MainTranslator]: Completed translation [2024-10-10 21:57:54,095 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:57:54 WrapperNode [2024-10-10 21:57:54,095 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-10 21:57:54,096 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-10 21:57:54,096 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-10 21:57:54,097 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-10 21:57:54,102 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:57:54" (1/1) ... [2024-10-10 21:57:54,109 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:57:54" (1/1) ... [2024-10-10 21:57:54,124 INFO L138 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 69 [2024-10-10 21:57:54,128 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-10 21:57:54,129 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-10 21:57:54,129 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-10 21:57:54,129 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-10 21:57:54,140 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:57:54" (1/1) ... [2024-10-10 21:57:54,141 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:57:54" (1/1) ... [2024-10-10 21:57:54,143 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:57:54" (1/1) ... [2024-10-10 21:57:54,159 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2024-10-10 21:57:54,159 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:57:54" (1/1) ... [2024-10-10 21:57:54,160 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:57:54" (1/1) ... [2024-10-10 21:57:54,164 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:57:54" (1/1) ... [2024-10-10 21:57:54,170 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:57:54" (1/1) ... [2024-10-10 21:57:54,175 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:57:54" (1/1) ... [2024-10-10 21:57:54,176 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:57:54" (1/1) ... [2024-10-10 21:57:54,177 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-10 21:57:54,178 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-10 21:57:54,178 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-10 21:57:54,178 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-10 21:57:54,179 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:57:54" (1/1) ... [2024-10-10 21:57:54,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 21:57:54,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:57:54,210 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 21:57:54,215 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 21:57:54,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-10 21:57:54,249 INFO L130 BoogieDeclarations]: Found specification of procedure max [2024-10-10 21:57:54,249 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2024-10-10 21:57:54,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-10 21:57:54,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-10 21:57:54,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-10 21:57:54,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-10 21:57:54,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-10 21:57:54,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-10 21:57:54,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-10 21:57:54,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-10 21:57:54,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-10 21:57:54,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-10 21:57:54,306 INFO L238 CfgBuilder]: Building ICFG [2024-10-10 21:57:54,308 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-10 21:57:54,433 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-10-10 21:57:54,433 INFO L287 CfgBuilder]: Performing block encoding [2024-10-10 21:57:54,465 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-10 21:57:54,465 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-10 21:57:54,465 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 09:57:54 BoogieIcfgContainer [2024-10-10 21:57:54,465 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-10 21:57:54,467 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-10 21:57:54,467 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-10 21:57:54,470 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-10 21:57:54,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 09:57:53" (1/3) ... [2024-10-10 21:57:54,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14c42876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 09:57:54, skipping insertion in model container [2024-10-10 21:57:54,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:57:54" (2/3) ... [2024-10-10 21:57:54,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14c42876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 09:57:54, skipping insertion in model container [2024-10-10 21:57:54,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 09:57:54" (3/3) ... [2024-10-10 21:57:54,472 INFO L112 eAbstractionObserver]: Analyzing ICFG max10-1.i [2024-10-10 21:57:54,485 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-10 21:57:54,486 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-10 21:57:54,533 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-10 21:57:54,541 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;@eb91ae1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-10 21:57:54,541 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-10 21:57:54,545 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-10 21:57:54,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-10 21:57:54,588 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:57:54,589 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:57:54,590 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:57:54,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:57:54,598 INFO L85 PathProgramCache]: Analyzing trace with hash 548279552, now seen corresponding path program 1 times [2024-10-10 21:57:54,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:57:54,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598244282] [2024-10-10 21:57:54,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:57:54,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:57:54,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:54,761 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-10 21:57:54,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:54,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-10 21:57:54,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:54,798 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-10 21:57:54,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:54,807 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-10 21:57:54,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:57:54,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598244282] [2024-10-10 21:57:54,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598244282] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 21:57:54,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 21:57:54,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 21:57:54,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873105268] [2024-10-10 21:57:54,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 21:57:54,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-10 21:57:54,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:57:54,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-10 21:57:54,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-10 21:57:54,834 INFO L87 Difference]: Start difference. First operand has 22 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-10 21:57:54,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:57:54,889 INFO L93 Difference]: Finished difference Result 42 states and 61 transitions. [2024-10-10 21:57:54,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-10 21:57:54,892 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2024-10-10 21:57:54,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:57:54,897 INFO L225 Difference]: With dead ends: 42 [2024-10-10 21:57:54,897 INFO L226 Difference]: Without dead ends: 20 [2024-10-10 21:57:54,899 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-10 21:57:54,901 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:57:54,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:57:54,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-10-10 21:57:54,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-10-10 21:57:54,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-10 21:57:54,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2024-10-10 21:57:54,930 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 25 [2024-10-10 21:57:54,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:57:54,931 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2024-10-10 21:57:54,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-10 21:57:54,931 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2024-10-10 21:57:54,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-10 21:57:54,933 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:57:54,933 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:57:54,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-10 21:57:54,934 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:57:54,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:57:54,935 INFO L85 PathProgramCache]: Analyzing trace with hash -419783731, now seen corresponding path program 1 times [2024-10-10 21:57:54,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:57:54,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734457853] [2024-10-10 21:57:54,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:57:54,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:57:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:55,103 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-10 21:57:55,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:55,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-10 21:57:55,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:55,144 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-10 21:57:55,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:55,156 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-10 21:57:55,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:57:55,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734457853] [2024-10-10 21:57:55,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734457853] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:57:55,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67893959] [2024-10-10 21:57:55,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:57:55,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:57:55,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:57:55,162 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 21:57:55,165 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 21:57:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:55,258 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 21:57:55,263 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:57:55,285 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-10 21:57:55,285 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 21:57:55,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67893959] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 21:57:55,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 21:57:55,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-10-10 21:57:55,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294196692] [2024-10-10 21:57:55,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 21:57:55,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 21:57:55,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:57:55,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 21:57:55,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-10 21:57:55,290 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-10 21:57:55,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:57:55,310 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2024-10-10 21:57:55,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 21:57:55,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2024-10-10 21:57:55,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:57:55,311 INFO L225 Difference]: With dead ends: 39 [2024-10-10 21:57:55,311 INFO L226 Difference]: Without dead ends: 21 [2024-10-10 21:57:55,311 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-10 21:57:55,312 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:57:55,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:57:55,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-10-10 21:57:55,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-10-10 21:57:55,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-10 21:57:55,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2024-10-10 21:57:55,317 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 25 [2024-10-10 21:57:55,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:57:55,317 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2024-10-10 21:57:55,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-10 21:57:55,317 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2024-10-10 21:57:55,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-10 21:57:55,317 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:57:55,318 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:57:55,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-10 21:57:55,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:57:55,519 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:57:55,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:57:55,520 INFO L85 PathProgramCache]: Analyzing trace with hash 836676700, now seen corresponding path program 1 times [2024-10-10 21:57:55,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:57:55,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180007297] [2024-10-10 21:57:55,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:57:55,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:57:55,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:55,576 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-10 21:57:55,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:55,588 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-10 21:57:55,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:55,593 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-10 21:57:55,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:55,597 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-10 21:57:55,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:57:55,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180007297] [2024-10-10 21:57:55,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180007297] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:57:55,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30159540] [2024-10-10 21:57:55,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:57:55,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:57:55,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:57:55,599 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 21:57:55,600 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 21:57:55,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:55,649 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 21:57:55,650 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:57:55,655 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-10 21:57:55,655 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 21:57:55,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30159540] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 21:57:55,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 21:57:55,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2024-10-10 21:57:55,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543426056] [2024-10-10 21:57:55,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 21:57:55,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 21:57:55,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:57:55,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 21:57:55,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-10 21:57:55,657 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-10 21:57:55,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:57:55,684 INFO L93 Difference]: Finished difference Result 40 states and 53 transitions. [2024-10-10 21:57:55,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 21:57:55,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2024-10-10 21:57:55,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:57:55,686 INFO L225 Difference]: With dead ends: 40 [2024-10-10 21:57:55,686 INFO L226 Difference]: Without dead ends: 24 [2024-10-10 21:57:55,686 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-10 21:57:55,687 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 3 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:57:55,687 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 34 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:57:55,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-10-10 21:57:55,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2024-10-10 21:57:55,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-10 21:57:55,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2024-10-10 21:57:55,696 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 26 [2024-10-10 21:57:55,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:57:55,697 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2024-10-10 21:57:55,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-10 21:57:55,698 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2024-10-10 21:57:55,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-10 21:57:55,699 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:57:55,700 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:57:55,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-10 21:57:55,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:57:55,907 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:57:55,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:57:55,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1099478403, now seen corresponding path program 1 times [2024-10-10 21:57:55,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:57:55,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346590183] [2024-10-10 21:57:55,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:57:55,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:57:55,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:56,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-10 21:57:56,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:56,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-10 21:57:56,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:56,025 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-10 21:57:56,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:56,044 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-10 21:57:56,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:57:56,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346590183] [2024-10-10 21:57:56,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346590183] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:57:56,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331015337] [2024-10-10 21:57:56,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:57:56,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:57:56,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:57:56,047 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 21:57:56,052 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 21:57:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:56,120 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 21:57:56,121 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:57:56,135 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-10 21:57:56,138 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 21:57:56,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331015337] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 21:57:56,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 21:57:56,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-10 21:57:56,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119193186] [2024-10-10 21:57:56,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 21:57:56,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 21:57:56,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:57:56,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 21:57:56,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-10 21:57:56,143 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-10 21:57:56,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:57:56,157 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2024-10-10 21:57:56,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 21:57:56,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2024-10-10 21:57:56,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:57:56,160 INFO L225 Difference]: With dead ends: 36 [2024-10-10 21:57:56,160 INFO L226 Difference]: Without dead ends: 23 [2024-10-10 21:57:56,160 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-10 21:57:56,161 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:57:56,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:57:56,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-10-10 21:57:56,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-10-10 21:57:56,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-10 21:57:56,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2024-10-10 21:57:56,168 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 35 [2024-10-10 21:57:56,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:57:56,169 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2024-10-10 21:57:56,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-10 21:57:56,170 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2024-10-10 21:57:56,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-10 21:57:56,171 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:57:56,172 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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 21:57:56,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-10 21:57:56,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:57:56,376 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:57:56,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:57:56,377 INFO L85 PathProgramCache]: Analyzing trace with hash -189935555, now seen corresponding path program 1 times [2024-10-10 21:57:56,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:57:56,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236164288] [2024-10-10 21:57:56,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:57:56,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:57:56,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:56,453 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-10 21:57:56,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:56,464 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-10 21:57:56,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:56,472 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-10 21:57:56,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:56,497 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-10 21:57:56,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:57:56,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236164288] [2024-10-10 21:57:56,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236164288] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:57:56,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486856326] [2024-10-10 21:57:56,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:57:56,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:57:56,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:57:56,499 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 21:57:56,501 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 21:57:56,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:56,609 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 21:57:56,610 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:57:56,639 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-10 21:57:56,639 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:57:56,677 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-10 21:57:56,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486856326] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:57:56,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:57:56,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3, 4] total 9 [2024-10-10 21:57:56,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925886540] [2024-10-10 21:57:56,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:57:56,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-10 21:57:56,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:57:56,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-10 21:57:56,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-10-10 21:57:56,679 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-10-10 21:57:56,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:57:56,710 INFO L93 Difference]: Finished difference Result 51 states and 69 transitions. [2024-10-10 21:57:56,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-10 21:57:56,711 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 36 [2024-10-10 21:57:56,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:57:56,711 INFO L225 Difference]: With dead ends: 51 [2024-10-10 21:57:56,711 INFO L226 Difference]: Without dead ends: 31 [2024-10-10 21:57:56,712 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-10-10 21:57:56,712 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:57:56,712 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 66 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:57:56,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-10-10 21:57:56,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2024-10-10 21:57:56,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-10 21:57:56,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2024-10-10 21:57:56,716 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 36 [2024-10-10 21:57:56,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:57:56,716 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2024-10-10 21:57:56,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-10-10 21:57:56,717 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2024-10-10 21:57:56,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-10-10 21:57:56,717 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:57:56,717 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:57:56,730 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 21:57:56,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:57:56,919 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:57:56,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:57:56,919 INFO L85 PathProgramCache]: Analyzing trace with hash -822209617, now seen corresponding path program 2 times [2024-10-10 21:57:56,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:57:56,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116507465] [2024-10-10 21:57:56,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:57:56,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:57:56,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:56,976 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-10 21:57:56,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:56,982 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-10 21:57:56,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:56,986 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-10 21:57:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:56,996 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-10-10 21:57:56,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:57:56,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116507465] [2024-10-10 21:57:56,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116507465] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:57:56,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480707121] [2024-10-10 21:57:56,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 21:57:56,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:57:56,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:57:56,998 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 21:57:56,999 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 21:57:57,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-10 21:57:57,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:57:57,087 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-10 21:57:57,088 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:57:57,122 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-10-10 21:57:57,122 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:57:57,187 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-10-10 21:57:57,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480707121] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:57:57,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:57:57,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 7] total 14 [2024-10-10 21:57:57,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242155329] [2024-10-10 21:57:57,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:57:57,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-10 21:57:57,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:57:57,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-10 21:57:57,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-10-10 21:57:57,190 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-10 21:57:57,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:57:57,221 INFO L93 Difference]: Finished difference Result 59 states and 77 transitions. [2024-10-10 21:57:57,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-10 21:57:57,222 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 48 [2024-10-10 21:57:57,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:57:57,223 INFO L225 Difference]: With dead ends: 59 [2024-10-10 21:57:57,223 INFO L226 Difference]: Without dead ends: 36 [2024-10-10 21:57:57,223 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-10-10 21:57:57,224 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:57:57,224 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 91 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:57:57,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-10-10 21:57:57,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-10-10 21:57:57,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-10 21:57:57,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2024-10-10 21:57:57,229 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 48 [2024-10-10 21:57:57,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:57:57,229 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2024-10-10 21:57:57,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-10 21:57:57,229 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2024-10-10 21:57:57,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-10 21:57:57,230 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:57:57,230 INFO L215 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:57:57,250 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 21:57:57,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:57:57,431 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:57:57,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:57:57,431 INFO L85 PathProgramCache]: Analyzing trace with hash -987209395, now seen corresponding path program 3 times [2024-10-10 21:57:57,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:57:57,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484989914] [2024-10-10 21:57:57,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:57:57,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:57:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:57,534 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-10 21:57:57,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:57,565 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-10 21:57:57,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:57,571 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-10 21:57:57,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:57,577 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-10-10 21:57:57,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:57:57,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484989914] [2024-10-10 21:57:57,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484989914] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:57:57,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720793681] [2024-10-10 21:57:57,578 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-10 21:57:57,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:57:57,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:57:57,579 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 21:57:57,590 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 21:57:57,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-10 21:57:57,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:57:57,665 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-10 21:57:57,666 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:57:57,735 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 40 proven. 3 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-10-10 21:57:57,735 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:57:57,833 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-10-10 21:57:57,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720793681] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:57:57,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:57:57,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-10 21:57:57,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886180841] [2024-10-10 21:57:57,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:57:57,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-10 21:57:57,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:57:57,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-10 21:57:57,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-10-10 21:57:57,836 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-10 21:57:57,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:57:57,878 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2024-10-10 21:57:57,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-10 21:57:57,879 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 55 [2024-10-10 21:57:57,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:57:57,879 INFO L225 Difference]: With dead ends: 67 [2024-10-10 21:57:57,879 INFO L226 Difference]: Without dead ends: 45 [2024-10-10 21:57:57,880 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-10-10 21:57:57,880 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 6 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:57:57,881 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 111 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:57:57,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-10-10 21:57:57,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2024-10-10 21:57:57,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 38 states have internal predecessors, (44), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-10 21:57:57,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2024-10-10 21:57:57,891 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 55 [2024-10-10 21:57:57,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:57:57,891 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2024-10-10 21:57:57,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-10 21:57:57,891 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2024-10-10 21:57:57,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-10 21:57:57,892 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:57:57,892 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:57:57,906 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 21:57:58,093 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,SelfDestructingSolverStorable6 [2024-10-10 21:57:58,094 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:57:58,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:57:58,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1647632556, now seen corresponding path program 4 times [2024-10-10 21:57:58,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:57:58,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355095944] [2024-10-10 21:57:58,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:57:58,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:57:58,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:58,207 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-10 21:57:58,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:58,241 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-10 21:57:58,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:58,250 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-10 21:57:58,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:58,260 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-10-10 21:57:58,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:57:58,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355095944] [2024-10-10 21:57:58,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355095944] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:57:58,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271498543] [2024-10-10 21:57:58,261 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-10 21:57:58,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:57:58,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:57:58,264 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 21:57:58,269 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 21:57:58,362 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-10 21:57:58,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:57:58,364 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-10 21:57:58,366 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:57:58,393 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 70 proven. 12 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2024-10-10 21:57:58,393 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:57:58,449 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-10-10 21:57:58,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271498543] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:57:58,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:57:58,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-10-10 21:57:58,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110306786] [2024-10-10 21:57:58,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:57:58,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-10 21:57:58,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:57:58,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-10 21:57:58,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-10-10 21:57:58,455 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-10 21:57:58,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:57:58,516 INFO L93 Difference]: Finished difference Result 87 states and 112 transitions. [2024-10-10 21:57:58,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-10 21:57:58,517 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2024-10-10 21:57:58,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:57:58,518 INFO L225 Difference]: With dead ends: 87 [2024-10-10 21:57:58,518 INFO L226 Difference]: Without dead ends: 58 [2024-10-10 21:57:58,519 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-10-10 21:57:58,520 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 14 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:57:58,521 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 115 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:57:58,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-10-10 21:57:58,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-10-10 21:57:58,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 1.2075471698113207) internal successors, (64), 53 states have internal predecessors, (64), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-10 21:57:58,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2024-10-10 21:57:58,534 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 68 [2024-10-10 21:57:58,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:57:58,534 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2024-10-10 21:57:58,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-10 21:57:58,535 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2024-10-10 21:57:58,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-10-10 21:57:58,537 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:57:58,538 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 10, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:57:58,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-10 21:57:58,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:57:58,739 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:57:58,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:57:58,740 INFO L85 PathProgramCache]: Analyzing trace with hash 997688685, now seen corresponding path program 5 times [2024-10-10 21:57:58,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:57:58,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613775040] [2024-10-10 21:57:58,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:57:58,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:57:58,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:59,008 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-10 21:57:59,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:59,106 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-10 21:57:59,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:59,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-10 21:57:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:57:59,134 INFO L134 CoverageAnalysis]: Checked inductivity of 988 backedges. 0 proven. 514 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked. [2024-10-10 21:57:59,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:57:59,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613775040] [2024-10-10 21:57:59,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613775040] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:57:59,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45769697] [2024-10-10 21:57:59,135 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-10 21:57:59,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:57:59,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:57:59,141 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 21:57:59,151 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 21:57:59,425 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2024-10-10 21:57:59,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:57:59,428 INFO L255 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-10 21:57:59,431 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:57:59,462 INFO L134 CoverageAnalysis]: Checked inductivity of 988 backedges. 420 proven. 92 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2024-10-10 21:57:59,462 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:57:59,557 INFO L134 CoverageAnalysis]: Checked inductivity of 988 backedges. 0 proven. 514 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked. [2024-10-10 21:57:59,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45769697] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:57:59,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:57:59,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 12 [2024-10-10 21:57:59,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694341254] [2024-10-10 21:57:59,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:57:59,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-10 21:57:59,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:57:59,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-10 21:57:59,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-10-10 21:57:59,559 INFO L87 Difference]: Start difference. First operand 58 states and 70 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-10 21:57:59,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:57:59,631 INFO L93 Difference]: Finished difference Result 108 states and 137 transitions. [2024-10-10 21:57:59,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-10 21:57:59,632 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2024-10-10 21:57:59,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:57:59,637 INFO L225 Difference]: With dead ends: 108 [2024-10-10 21:57:59,637 INFO L226 Difference]: Without dead ends: 64 [2024-10-10 21:57:59,638 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 223 SyntacticMatches, 8 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-10-10 21:57:59,638 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 18 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:57:59,639 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 102 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:57:59,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-10-10 21:57:59,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-10-10 21:57:59,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 59 states have (on average 1.2203389830508475) internal successors, (72), 59 states have internal predecessors, (72), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-10 21:57:59,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 78 transitions. [2024-10-10 21:57:59,646 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 78 transitions. Word has length 113 [2024-10-10 21:57:59,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:57:59,646 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 78 transitions. [2024-10-10 21:57:59,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-10 21:57:59,646 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 78 transitions. [2024-10-10 21:57:59,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-10-10 21:57:59,648 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:57:59,648 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 10, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:57:59,673 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-10 21:57:59,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:57:59,850 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:57:59,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:57:59,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1475703117, now seen corresponding path program 6 times [2024-10-10 21:57:59,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:57:59,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648514479] [2024-10-10 21:57:59,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:57:59,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:57:59,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:58:00,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-10 21:58:00,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:58:00,191 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-10 21:58:00,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:58:00,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-10-10 21:58:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:58:00,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1462 trivial. 0 not checked. [2024-10-10 21:58:00,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:58:00,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648514479] [2024-10-10 21:58:00,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648514479] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:58:00,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463926903] [2024-10-10 21:58:00,243 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-10 21:58:00,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:58:00,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:58:00,248 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 21:58:00,254 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 [2024-10-10 21:58:00,441 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-10-10 21:58:00,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:58:00,444 INFO L255 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-10 21:58:00,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:58:00,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 648 proven. 21 refuted. 0 times theorem prover too weak. 814 trivial. 0 not checked. [2024-10-10 21:58:00,468 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:58:00,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1462 trivial. 0 not checked. [2024-10-10 21:58:00,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463926903] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:58:00,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:58:00,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-10-10 21:58:00,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773169156] [2024-10-10 21:58:00,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:58:00,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-10 21:58:00,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:58:00,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-10 21:58:00,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-10-10 21:58:00,542 INFO L87 Difference]: Start difference. First operand 64 states and 78 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-10 21:58:00,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:58:00,559 INFO L93 Difference]: Finished difference Result 107 states and 134 transitions. [2024-10-10 21:58:00,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-10 21:58:00,566 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 131 [2024-10-10 21:58:00,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:58:00,567 INFO L225 Difference]: With dead ends: 107 [2024-10-10 21:58:00,568 INFO L226 Difference]: Without dead ends: 67 [2024-10-10 21:58:00,568 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 260 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-10-10 21:58:00,568 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 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 21:58:00,569 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:58:00,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-10-10 21:58:00,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-10-10 21:58:00,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 62 states have (on average 1.2096774193548387) internal successors, (75), 62 states have internal predecessors, (75), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-10 21:58:00,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 81 transitions. [2024-10-10 21:58:00,573 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 81 transitions. Word has length 131 [2024-10-10 21:58:00,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:58:00,573 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 81 transitions. [2024-10-10 21:58:00,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-10 21:58:00,574 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 81 transitions. [2024-10-10 21:58:00,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-10-10 21:58:00,574 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:58:00,575 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 10, 9, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:58:00,591 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-10 21:58:00,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:58:00,776 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:58:00,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:58:00,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1426919793, now seen corresponding path program 7 times [2024-10-10 21:58:00,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:58:00,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641685432] [2024-10-10 21:58:00,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:58:00,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:58:00,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:58:02,299 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-10 21:58:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:58:02,756 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-10 21:58:02,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:58:03,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-10 21:58:03,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:58:03,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1507 backedges. 206 proven. 914 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2024-10-10 21:58:03,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:58:03,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641685432] [2024-10-10 21:58:03,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641685432] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:58:03,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905602396] [2024-10-10 21:58:03,226 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-10 21:58:03,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:58:03,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:58:03,228 INFO L229 MonitoredProcess]: Starting monitored process 11 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 21:58:03,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-10 21:58:03,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:58:03,426 INFO L255 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 142 conjuncts are in the unsatisfiable core [2024-10-10 21:58:03,433 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:58:04,383 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 21:58:04,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 75 treesize of output 59 [2024-10-10 21:58:04,452 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 21:58:04,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 75 treesize of output 59 [2024-10-10 21:58:04,520 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 21:58:04,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 75 treesize of output 59 [2024-10-10 21:58:04,589 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 21:58:04,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 75 treesize of output 59 [2024-10-10 21:58:04,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 21:58:04,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 21:58:04,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 21:58:04,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 21:58:04,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 21:58:04,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 21:58:04,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 21:58:04,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 21:58:04,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 21:58:04,694 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-10-10 21:58:04,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 20 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 81 treesize of output 83 [2024-10-10 21:58:05,105 INFO L349 Elim1Store]: treesize reduction 274, result has 25.3 percent of original size [2024-10-10 21:58:05,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 16 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 44 case distinctions, treesize of input 123 treesize of output 156 [2024-10-10 21:58:06,191 INFO L349 Elim1Store]: treesize reduction 462, result has 28.3 percent of original size [2024-10-10 21:58:06,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 22 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 77 case distinctions, treesize of input 160 treesize of output 260