./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_mul_init.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_mul_init.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 09dc663f7f76eee13b6af61297831e3fbddcb16c16389bf8d94f2d27048733d0 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 14:36:50,170 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 14:36:50,257 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 14:36:50,262 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 14:36:50,263 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 14:36:50,294 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 14:36:50,295 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 14:36:50,295 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 14:36:50,296 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 14:36:50,297 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 14:36:50,298 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 14:36:50,298 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 14:36:50,298 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 14:36:50,299 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 14:36:50,299 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 14:36:50,301 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 14:36:50,301 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 14:36:50,301 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 14:36:50,302 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 14:36:50,302 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 14:36:50,302 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 14:36:50,306 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 14:36:50,306 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 14:36:50,306 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 14:36:50,307 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 14:36:50,307 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 14:36:50,307 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 14:36:50,307 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 14:36:50,308 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 14:36:50,308 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 14:36:50,308 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 14:36:50,308 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 14:36:50,308 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 14:36:50,309 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 14:36:50,309 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 14:36:50,309 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 14:36:50,309 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 14:36:50,309 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 14:36:50,310 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 14:36:50,310 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 14:36:50,310 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 14:36:50,310 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 14:36:50,312 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 09dc663f7f76eee13b6af61297831e3fbddcb16c16389bf8d94f2d27048733d0 [2024-10-12 14:36:50,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 14:36:50,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 14:36:50,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 14:36:50,610 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 14:36:50,611 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 14:36:50,612 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_mul_init.i [2024-10-12 14:36:52,088 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 14:36:52,320 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 14:36:52,322 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_mul_init.i [2024-10-12 14:36:52,331 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02ef5134a/c9e48cdf6a3443b58bc5705d9238336c/FLAG0ec926c95 [2024-10-12 14:36:52,346 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02ef5134a/c9e48cdf6a3443b58bc5705d9238336c [2024-10-12 14:36:52,348 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 14:36:52,350 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 14:36:52,352 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 14:36:52,352 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 14:36:52,357 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 14:36:52,357 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:36:52" (1/1) ... [2024-10-12 14:36:52,358 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d7583e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:36:52, skipping insertion in model container [2024-10-12 14:36:52,358 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:36:52" (1/1) ... [2024-10-12 14:36:52,377 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 14:36:52,562 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_mul_init.i[807,820] [2024-10-12 14:36:52,628 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 14:36:52,649 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 14:36:52,689 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_mul_init.i[807,820] [2024-10-12 14:36:52,708 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 14:36:52,721 INFO L204 MainTranslator]: Completed translation [2024-10-12 14:36:52,721 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:36:52 WrapperNode [2024-10-12 14:36:52,724 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 14:36:52,725 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 14:36:52,725 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 14:36:52,725 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 14:36:52,731 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:36:52" (1/1) ... [2024-10-12 14:36:52,737 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:36:52" (1/1) ... [2024-10-12 14:36:52,754 INFO L138 Inliner]: procedures = 16, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 73 [2024-10-12 14:36:52,755 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 14:36:52,756 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 14:36:52,756 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 14:36:52,756 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 14:36:52,765 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:36:52" (1/1) ... [2024-10-12 14:36:52,766 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:36:52" (1/1) ... [2024-10-12 14:36:52,767 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:36:52" (1/1) ... [2024-10-12 14:36:52,780 INFO L175 MemorySlicer]: Split 11 memory accesses to 3 slices as follows [2, 4, 5]. 45 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 4 writes are split as follows [0, 2, 2]. [2024-10-12 14:36:52,781 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:36:52" (1/1) ... [2024-10-12 14:36:52,781 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:36:52" (1/1) ... [2024-10-12 14:36:52,786 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:36:52" (1/1) ... [2024-10-12 14:36:52,790 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:36:52" (1/1) ... [2024-10-12 14:36:52,791 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:36:52" (1/1) ... [2024-10-12 14:36:52,792 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:36:52" (1/1) ... [2024-10-12 14:36:52,794 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 14:36:52,795 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 14:36:52,795 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 14:36:52,796 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 14:36:52,796 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:36:52" (1/1) ... [2024-10-12 14:36:52,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 14:36:52,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 14:36:52,827 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 14:36:52,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 14:36:52,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 14:36:52,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 14:36:52,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-12 14:36:52,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-12 14:36:52,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-12 14:36:52,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-12 14:36:52,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-12 14:36:52,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-12 14:36:52,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 14:36:52,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 14:36:52,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-12 14:36:52,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-12 14:36:52,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-12 14:36:52,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-12 14:36:52,950 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 14:36:52,952 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 14:36:53,106 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-10-12 14:36:53,106 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 14:36:53,130 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 14:36:53,131 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-12 14:36:53,131 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:36:53 BoogieIcfgContainer [2024-10-12 14:36:53,131 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 14:36:53,135 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 14:36:53,137 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 14:36:53,140 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 14:36:53,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 02:36:52" (1/3) ... [2024-10-12 14:36:53,141 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45ebda39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:36:53, skipping insertion in model container [2024-10-12 14:36:53,141 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:36:52" (2/3) ... [2024-10-12 14:36:53,141 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45ebda39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:36:53, skipping insertion in model container [2024-10-12 14:36:53,141 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:36:53" (3/3) ... [2024-10-12 14:36:53,145 INFO L112 eAbstractionObserver]: Analyzing ICFG array_mul_init.i [2024-10-12 14:36:53,160 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 14:36:53,160 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 14:36:53,207 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 14:36:53,213 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;@1108e726, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 14:36:53,214 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 14:36:53,218 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:36:53,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-12 14:36:53,224 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:36:53,224 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:36:53,225 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:36:53,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:36:53,230 INFO L85 PathProgramCache]: Analyzing trace with hash 2040435038, now seen corresponding path program 1 times [2024-10-12 14:36:53,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:36:53,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707977515] [2024-10-12 14:36:53,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:36:53,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:36:53,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:36:53,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 14:36:53,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:36:53,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707977515] [2024-10-12 14:36:53,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707977515] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 14:36:53,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 14:36:53,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 14:36:53,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488810324] [2024-10-12 14:36:53,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 14:36:53,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 14:36:53,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:36:53,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 14:36:53,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 14:36:53,472 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:36:53,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:36:53,554 INFO L93 Difference]: Finished difference Result 41 states and 64 transitions. [2024-10-12 14:36:53,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 14:36:53,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-10-12 14:36:53,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:36:53,563 INFO L225 Difference]: With dead ends: 41 [2024-10-12 14:36:53,563 INFO L226 Difference]: Without dead ends: 25 [2024-10-12 14:36:53,565 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 14:36:53,568 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 14:36:53,569 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 17 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 14:36:53,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-10-12 14:36:53,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 16. [2024-10-12 14:36:53,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:36:53,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2024-10-12 14:36:53,606 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 10 [2024-10-12 14:36:53,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:36:53,607 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2024-10-12 14:36:53,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:36:53,608 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2024-10-12 14:36:53,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-12 14:36:53,609 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:36:53,609 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:36:53,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 14:36:53,610 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:36:53,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:36:53,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1179275889, now seen corresponding path program 1 times [2024-10-12 14:36:53,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:36:53,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415663990] [2024-10-12 14:36:53,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:36:53,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:36:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:36:53,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 14:36:53,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:36:53,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415663990] [2024-10-12 14:36:53,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415663990] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 14:36:53,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588307899] [2024-10-12 14:36:53,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:36:53,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:36:53,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 14:36:53,800 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 14:36:53,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 14:36:53,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:36:53,898 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 14:36:53,904 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 14:36:53,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 14:36:53,952 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 14:36:53,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 14:36:53,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588307899] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 14:36:53,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 14:36:53,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-12 14:36:53,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374382643] [2024-10-12 14:36:53,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 14:36:53,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 14:36:53,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:36:53,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 14:36:53,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-12 14:36:53,996 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:36:54,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:36:54,111 INFO L93 Difference]: Finished difference Result 63 states and 82 transitions. [2024-10-12 14:36:54,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 14:36:54,112 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-10-12 14:36:54,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:36:54,113 INFO L225 Difference]: With dead ends: 63 [2024-10-12 14:36:54,114 INFO L226 Difference]: Without dead ends: 50 [2024-10-12 14:36:54,115 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-12 14:36:54,116 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 60 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 14:36:54,118 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 28 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 14:36:54,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-10-12 14:36:54,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 28. [2024-10-12 14:36:54,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:36:54,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2024-10-12 14:36:54,128 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 14 [2024-10-12 14:36:54,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:36:54,129 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2024-10-12 14:36:54,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:36:54,129 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2024-10-12 14:36:54,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-12 14:36:54,130 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:36:54,130 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:36:54,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 14:36:54,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:36:54,335 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:36:54,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:36:54,336 INFO L85 PathProgramCache]: Analyzing trace with hash -563851245, now seen corresponding path program 2 times [2024-10-12 14:36:54,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:36:54,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734660630] [2024-10-12 14:36:54,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:36:54,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:36:54,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:36:54,646 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-12 14:36:54,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:36:54,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734660630] [2024-10-12 14:36:54,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734660630] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 14:36:54,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900356867] [2024-10-12 14:36:54,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 14:36:54,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:36:54,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 14:36:54,650 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 14:36:54,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 14:36:54,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 14:36:54,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 14:36:54,748 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 14:36:54,750 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 14:36:54,775 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-12 14:36:54,777 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 14:36:54,868 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-12 14:36:54,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900356867] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 14:36:54,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 14:36:54,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2024-10-12 14:36:54,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576772329] [2024-10-12 14:36:54,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 14:36:54,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-12 14:36:54,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:36:54,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-12 14:36:54,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-12 14:36:54,875 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:36:55,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:36:55,052 INFO L93 Difference]: Finished difference Result 138 states and 178 transitions. [2024-10-12 14:36:55,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-12 14:36:55,052 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-10-12 14:36:55,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:36:55,054 INFO L225 Difference]: With dead ends: 138 [2024-10-12 14:36:55,054 INFO L226 Difference]: Without dead ends: 116 [2024-10-12 14:36:55,054 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-12 14:36:55,056 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 178 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 14:36:55,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 70 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 14:36:55,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-10-12 14:36:55,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 52. [2024-10-12 14:36:55,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 51 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:36:55,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2024-10-12 14:36:55,070 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 26 [2024-10-12 14:36:55,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:36:55,070 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2024-10-12 14:36:55,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:36:55,071 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2024-10-12 14:36:55,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-12 14:36:55,072 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:36:55,072 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:36:55,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-12 14:36:55,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-10-12 14:36:55,274 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:36:55,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:36:55,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1029965869, now seen corresponding path program 3 times [2024-10-12 14:36:55,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:36:55,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452962814] [2024-10-12 14:36:55,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:36:55,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:36:55,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:36:55,707 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-12 14:36:55,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:36:55,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452962814] [2024-10-12 14:36:55,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452962814] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 14:36:55,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381506130] [2024-10-12 14:36:55,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 14:36:55,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:36:55,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 14:36:55,711 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 14:36:55,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 14:36:58,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-10-12 14:36:58,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 14:36:58,076 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 14:36:58,078 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 14:36:58,127 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-12 14:36:58,127 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 14:36:58,371 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-12 14:36:58,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381506130] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 14:36:58,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 14:36:58,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 25 [2024-10-12 14:36:58,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17821988] [2024-10-12 14:36:58,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 14:36:58,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-12 14:36:58,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:36:58,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-12 14:36:58,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-10-12 14:36:58,374 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand has 25 states, 25 states have (on average 2.8) internal successors, (70), 25 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:36:58,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:36:58,686 INFO L93 Difference]: Finished difference Result 288 states and 370 transitions. [2024-10-12 14:36:58,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-12 14:36:58,688 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.8) internal successors, (70), 25 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-10-12 14:36:58,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:36:58,690 INFO L225 Difference]: With dead ends: 288 [2024-10-12 14:36:58,693 INFO L226 Difference]: Without dead ends: 248 [2024-10-12 14:36:58,694 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-10-12 14:36:58,695 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 440 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 14:36:58,696 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 136 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 14:36:58,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-10-12 14:36:58,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 100. [2024-10-12 14:36:58,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.2626262626262625) internal successors, (125), 99 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:36:58,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 125 transitions. [2024-10-12 14:36:58,717 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 125 transitions. Word has length 50 [2024-10-12 14:36:58,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:36:58,718 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 125 transitions. [2024-10-12 14:36:58,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.8) internal successors, (70), 25 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:36:58,718 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 125 transitions. [2024-10-12 14:36:58,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-10-12 14:36:58,721 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:36:58,721 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:36:58,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-12 14:36:58,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:36:58,922 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:36:58,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:36:58,922 INFO L85 PathProgramCache]: Analyzing trace with hash -794921133, now seen corresponding path program 4 times [2024-10-12 14:36:58,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:36:58,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577823385] [2024-10-12 14:36:58,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:36:58,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:36:59,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:36:59,871 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-10-12 14:36:59,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:36:59,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577823385] [2024-10-12 14:36:59,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577823385] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 14:36:59,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222485875] [2024-10-12 14:36:59,872 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-12 14:36:59,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:36:59,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 14:36:59,874 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 14:36:59,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 14:37:00,103 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-12 14:37:00,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 14:37:00,112 INFO L255 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-12 14:37:00,118 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 14:37:00,230 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-10-12 14:37:00,230 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 14:37:01,107 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-10-12 14:37:01,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222485875] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 14:37:01,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 14:37:01,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-10-12 14:37:01,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702632346] [2024-10-12 14:37:01,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 14:37:01,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-10-12 14:37:01,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:37:01,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-10-12 14:37:01,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-10-12 14:37:01,113 INFO L87 Difference]: Start difference. First operand 100 states and 125 transitions. Second operand has 49 states, 49 states have (on average 3.0408163265306123) internal successors, (149), 49 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:37:01,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:37:01,905 INFO L93 Difference]: Finished difference Result 588 states and 754 transitions. [2024-10-12 14:37:01,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-10-12 14:37:01,905 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.0408163265306123) internal successors, (149), 49 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2024-10-12 14:37:01,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:37:01,908 INFO L225 Difference]: With dead ends: 588 [2024-10-12 14:37:01,908 INFO L226 Difference]: Without dead ends: 512 [2024-10-12 14:37:01,909 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-10-12 14:37:01,910 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 1252 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 14:37:01,911 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1252 Valid, 280 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 14:37:01,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2024-10-12 14:37:01,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 196. [2024-10-12 14:37:01,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 1.2564102564102564) internal successors, (245), 195 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:37:01,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 245 transitions. [2024-10-12 14:37:01,928 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 245 transitions. Word has length 98 [2024-10-12 14:37:01,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:37:01,928 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 245 transitions. [2024-10-12 14:37:01,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.0408163265306123) internal successors, (149), 49 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:37:01,929 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 245 transitions. [2024-10-12 14:37:01,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-10-12 14:37:01,933 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:37:01,934 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:37:01,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 14:37:02,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:37:02,135 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:37:02,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:37:02,135 INFO L85 PathProgramCache]: Analyzing trace with hash 671102547, now seen corresponding path program 5 times [2024-10-12 14:37:02,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:37:02,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906717138] [2024-10-12 14:37:02,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:37:02,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:37:02,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:37:04,926 INFO L134 CoverageAnalysis]: Checked inductivity of 4232 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2024-10-12 14:37:04,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:37:04,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906717138] [2024-10-12 14:37:04,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906717138] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 14:37:04,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004057340] [2024-10-12 14:37:04,928 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-12 14:37:04,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:37:04,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 14:37:04,947 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 14:37:04,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process