/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-34.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 08:26:07,849 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 08:26:07,914 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 08:26:07,917 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 08:26:07,917 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 08:26:07,939 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 08:26:07,940 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 08:26:07,940 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 08:26:07,941 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 08:26:07,944 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 08:26:07,944 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 08:26:07,945 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 08:26:07,945 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 08:26:07,946 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 08:26:07,946 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 08:26:07,946 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 08:26:07,947 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 08:26:07,947 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 08:26:07,947 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 08:26:07,947 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 08:26:07,947 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 08:26:07,948 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 08:26:07,948 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 08:26:07,948 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 08:26:07,948 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 08:26:07,948 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 08:26:07,948 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 08:26:07,948 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 08:26:07,949 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 08:26:07,949 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 08:26:07,950 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 08:26:07,950 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 08:26:07,950 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 08:26:07,950 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 08:26:07,950 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 08:26:07,950 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 08:26:07,951 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 08:26:07,951 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 08:26:07,951 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 08:26:07,951 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 08:26:07,951 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 08:26:07,951 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 08:26:07,951 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 08:26:07,951 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 08:26:08,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 08:26:08,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 08:26:08,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 08:26:08,163 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 08:26:08,163 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 08:26:08,164 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-34.i [2023-12-19 08:26:09,161 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 08:26:09,326 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 08:26:09,327 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-34.i [2023-12-19 08:26:09,334 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f99ca0786/4636c8a9e89146c2a1d6555bd0cdfeb3/FLAGabb665746 [2023-12-19 08:26:09,344 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f99ca0786/4636c8a9e89146c2a1d6555bd0cdfeb3 [2023-12-19 08:26:09,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 08:26:09,347 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 08:26:09,348 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 08:26:09,348 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 08:26:09,351 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 08:26:09,351 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 08:26:09" (1/1) ... [2023-12-19 08:26:09,352 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bba7576 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:26:09, skipping insertion in model container [2023-12-19 08:26:09,352 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 08:26:09" (1/1) ... [2023-12-19 08:26:09,384 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 08:26:09,502 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-34.i[919,932] [2023-12-19 08:26:09,560 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 08:26:09,574 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 08:26:09,582 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-34.i[919,932] [2023-12-19 08:26:09,605 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 08:26:09,616 INFO L206 MainTranslator]: Completed translation [2023-12-19 08:26:09,617 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:26:09 WrapperNode [2023-12-19 08:26:09,617 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 08:26:09,617 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 08:26:09,618 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 08:26:09,618 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 08:26:09,622 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:26:09" (1/1) ... [2023-12-19 08:26:09,644 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:26:09" (1/1) ... [2023-12-19 08:26:09,676 INFO L138 Inliner]: procedures = 26, calls = 46, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 266 [2023-12-19 08:26:09,677 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 08:26:09,677 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 08:26:09,677 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 08:26:09,677 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 08:26:09,685 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:26:09" (1/1) ... [2023-12-19 08:26:09,685 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:26:09" (1/1) ... [2023-12-19 08:26:09,688 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:26:09" (1/1) ... [2023-12-19 08:26:09,699 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 08:26:09,699 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:26:09" (1/1) ... [2023-12-19 08:26:09,700 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:26:09" (1/1) ... [2023-12-19 08:26:09,706 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:26:09" (1/1) ... [2023-12-19 08:26:09,708 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:26:09" (1/1) ... [2023-12-19 08:26:09,710 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:26:09" (1/1) ... [2023-12-19 08:26:09,711 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:26:09" (1/1) ... [2023-12-19 08:26:09,714 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 08:26:09,715 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 08:26:09,715 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 08:26:09,715 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 08:26:09,715 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:26:09" (1/1) ... [2023-12-19 08:26:09,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 08:26:09,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:26:09,750 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) [2023-12-19 08:26:09,760 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 [2023-12-19 08:26:09,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 08:26:09,791 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 08:26:09,792 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 08:26:09,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 08:26:09,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 08:26:09,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 08:26:09,887 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 08:26:09,889 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 08:26:10,261 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 08:26:10,282 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 08:26:10,282 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 08:26:10,282 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 08:26:10 BoogieIcfgContainer [2023-12-19 08:26:10,282 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 08:26:10,284 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 08:26:10,284 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 08:26:10,286 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 08:26:10,286 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 08:26:09" (1/3) ... [2023-12-19 08:26:10,286 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@137539e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 08:26:10, skipping insertion in model container [2023-12-19 08:26:10,287 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:26:09" (2/3) ... [2023-12-19 08:26:10,287 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@137539e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 08:26:10, skipping insertion in model container [2023-12-19 08:26:10,287 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 08:26:10" (3/3) ... [2023-12-19 08:26:10,288 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-cn_file-34.i [2023-12-19 08:26:10,299 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 08:26:10,299 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 08:26:10,342 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 08:26:10,348 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@6bac9666, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 08:26:10,349 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 08:26:10,352 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 66 states have (on average 1.5454545454545454) internal successors, (102), 67 states have internal predecessors, (102), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-19 08:26:10,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-12-19 08:26:10,370 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:26:10,371 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:26:10,371 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:26:10,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:26:10,375 INFO L85 PathProgramCache]: Analyzing trace with hash -2091517171, now seen corresponding path program 1 times [2023-12-19 08:26:10,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:26:10,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040647411] [2023-12-19 08:26:10,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:26:10,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:26:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:26:10,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:26:10,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040647411] [2023-12-19 08:26:10,585 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 08:26:10,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300162171] [2023-12-19 08:26:10,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:26:10,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:26:10,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:26:10,590 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:26:10,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 08:26:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:26:10,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 08:26:10,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:26:10,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2023-12-19 08:26:10,840 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:26:10,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300162171] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:26:10,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:26:10,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 08:26:10,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889472856] [2023-12-19 08:26:10,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:26:10,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 08:26:10,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:26:10,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 08:26:10,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 08:26:10,867 INFO L87 Difference]: Start difference. First operand has 102 states, 66 states have (on average 1.5454545454545454) internal successors, (102), 67 states have internal predecessors, (102), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) [2023-12-19 08:26:10,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:26:10,899 INFO L93 Difference]: Finished difference Result 201 states and 367 transitions. [2023-12-19 08:26:10,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 08:26:10,901 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) Word has length 208 [2023-12-19 08:26:10,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:26:10,906 INFO L225 Difference]: With dead ends: 201 [2023-12-19 08:26:10,906 INFO L226 Difference]: Without dead ends: 100 [2023-12-19 08:26:10,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 08:26:10,912 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 08:26:10,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 160 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 08:26:10,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-12-19 08:26:10,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2023-12-19 08:26:10,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 65 states have (on average 1.4923076923076923) internal successors, (97), 65 states have internal predecessors, (97), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-19 08:26:10,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 163 transitions. [2023-12-19 08:26:10,976 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 163 transitions. Word has length 208 [2023-12-19 08:26:10,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:26:10,976 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 163 transitions. [2023-12-19 08:26:10,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) [2023-12-19 08:26:10,977 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 163 transitions. [2023-12-19 08:26:10,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-12-19 08:26:10,984 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:26:10,984 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:26:10,993 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 08:26:11,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 08:26:11,191 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:26:11,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:26:11,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1967197651, now seen corresponding path program 1 times [2023-12-19 08:26:11,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:26:11,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755524921] [2023-12-19 08:26:11,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:26:11,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:26:11,237 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:26:11,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1008497558] [2023-12-19 08:26:11,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:26:11,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:26:11,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:26:11,239 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:26:11,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 08:26:11,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:26:11,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 08:26:11,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:26:11,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 08:26:11,652 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:26:11,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:26:11,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755524921] [2023-12-19 08:26:11,652 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:26:11,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008497558] [2023-12-19 08:26:11,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008497558] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:26:11,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:26:11,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 08:26:11,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842036528] [2023-12-19 08:26:11,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:26:11,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 08:26:11,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:26:11,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 08:26:11,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 08:26:11,657 INFO L87 Difference]: Start difference. First operand 100 states and 163 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:26:11,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:26:11,928 INFO L93 Difference]: Finished difference Result 309 states and 505 transitions. [2023-12-19 08:26:11,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 08:26:11,928 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 208 [2023-12-19 08:26:11,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:26:11,931 INFO L225 Difference]: With dead ends: 309 [2023-12-19 08:26:11,931 INFO L226 Difference]: Without dead ends: 210 [2023-12-19 08:26:11,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 08:26:11,933 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 204 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 08:26:11,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 673 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 08:26:11,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-12-19 08:26:11,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 102. [2023-12-19 08:26:11,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 67 states have (on average 1.4776119402985075) internal successors, (99), 67 states have internal predecessors, (99), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-19 08:26:11,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 165 transitions. [2023-12-19 08:26:11,947 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 165 transitions. Word has length 208 [2023-12-19 08:26:11,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:26:11,949 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 165 transitions. [2023-12-19 08:26:11,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:26:11,949 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 165 transitions. [2023-12-19 08:26:11,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-12-19 08:26:11,951 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:26:11,951 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:26:11,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 08:26:12,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 08:26:12,162 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:26:12,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:26:12,163 INFO L85 PathProgramCache]: Analyzing trace with hash 24197559, now seen corresponding path program 1 times [2023-12-19 08:26:12,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:26:12,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380474494] [2023-12-19 08:26:12,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:26:12,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:26:12,209 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:26:12,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1187300230] [2023-12-19 08:26:12,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:26:12,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:26:12,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:26:12,213 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:26:12,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 08:26:12,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:26:12,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 08:26:12,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:26:12,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 816 proven. 72 refuted. 0 times theorem prover too weak. 1224 trivial. 0 not checked. [2023-12-19 08:26:12,784 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:26:12,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 24 proven. 72 refuted. 0 times theorem prover too weak. 2016 trivial. 0 not checked. [2023-12-19 08:26:12,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:26:12,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380474494] [2023-12-19 08:26:12,987 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:26:12,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187300230] [2023-12-19 08:26:12,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187300230] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 08:26:12,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 08:26:12,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-12-19 08:26:12,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547308649] [2023-12-19 08:26:12,988 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 08:26:12,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 08:26:12,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:26:12,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 08:26:12,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-19 08:26:12,991 INFO L87 Difference]: Start difference. First operand 102 states and 165 transitions. Second operand has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 12 states have internal predecessors, (86), 4 states have call successors, (66), 3 states have call predecessors, (66), 5 states have return successors, (66), 4 states have call predecessors, (66), 4 states have call successors, (66) [2023-12-19 08:26:13,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:26:13,494 INFO L93 Difference]: Finished difference Result 384 states and 619 transitions. [2023-12-19 08:26:13,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 08:26:13,494 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 12 states have internal predecessors, (86), 4 states have call successors, (66), 3 states have call predecessors, (66), 5 states have return successors, (66), 4 states have call predecessors, (66), 4 states have call successors, (66) Word has length 209 [2023-12-19 08:26:13,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:26:13,497 INFO L225 Difference]: With dead ends: 384 [2023-12-19 08:26:13,497 INFO L226 Difference]: Without dead ends: 283 [2023-12-19 08:26:13,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2023-12-19 08:26:13,498 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 256 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 08:26:13,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 974 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 08:26:13,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-12-19 08:26:13,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 201. [2023-12-19 08:26:13,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 131 states have (on average 1.4580152671755726) internal successors, (191), 131 states have internal predecessors, (191), 66 states have call successors, (66), 3 states have call predecessors, (66), 3 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-12-19 08:26:13,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 323 transitions. [2023-12-19 08:26:13,540 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 323 transitions. Word has length 209 [2023-12-19 08:26:13,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:26:13,541 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 323 transitions. [2023-12-19 08:26:13,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 12 states have internal predecessors, (86), 4 states have call successors, (66), 3 states have call predecessors, (66), 5 states have return successors, (66), 4 states have call predecessors, (66), 4 states have call successors, (66) [2023-12-19 08:26:13,542 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 323 transitions. [2023-12-19 08:26:13,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-12-19 08:26:13,544 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:26:13,544 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:26:13,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 08:26:13,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:26:13,751 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:26:13,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:26:13,751 INFO L85 PathProgramCache]: Analyzing trace with hash 942240710, now seen corresponding path program 1 times [2023-12-19 08:26:13,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:26:13,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962727150] [2023-12-19 08:26:13,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:26:13,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:26:13,777 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:26:13,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1605705264] [2023-12-19 08:26:13,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:26:13,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:26:13,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:26:13,779 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) [2023-12-19 08:26:13,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 08:26:13,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:26:13,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 08:26:13,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:26:14,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 08:26:14,064 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:26:14,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:26:14,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962727150] [2023-12-19 08:26:14,065 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:26:14,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605705264] [2023-12-19 08:26:14,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605705264] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:26:14,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:26:14,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 08:26:14,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365828811] [2023-12-19 08:26:14,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:26:14,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 08:26:14,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:26:14,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 08:26:14,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 08:26:14,066 INFO L87 Difference]: Start difference. First operand 201 states and 323 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:26:14,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:26:14,163 INFO L93 Difference]: Finished difference Result 673 states and 1084 transitions. [2023-12-19 08:26:14,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 08:26:14,164 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 209 [2023-12-19 08:26:14,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:26:14,167 INFO L225 Difference]: With dead ends: 673 [2023-12-19 08:26:14,167 INFO L226 Difference]: Without dead ends: 473 [2023-12-19 08:26:14,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 08:26:14,168 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 162 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 08:26:14,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 524 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 08:26:14,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2023-12-19 08:26:14,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 403. [2023-12-19 08:26:14,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 264 states have (on average 1.446969696969697) internal successors, (382), 264 states have internal predecessors, (382), 132 states have call successors, (132), 6 states have call predecessors, (132), 6 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) [2023-12-19 08:26:14,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 646 transitions. [2023-12-19 08:26:14,201 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 646 transitions. Word has length 209 [2023-12-19 08:26:14,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:26:14,201 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 646 transitions. [2023-12-19 08:26:14,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:26:14,202 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 646 transitions. [2023-12-19 08:26:14,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-12-19 08:26:14,203 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:26:14,203 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:26:14,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 08:26:14,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:26:14,410 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:26:14,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:26:14,411 INFO L85 PathProgramCache]: Analyzing trace with hash 633897676, now seen corresponding path program 1 times [2023-12-19 08:26:14,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:26:14,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192330053] [2023-12-19 08:26:14,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:26:14,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:26:14,433 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:26:14,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1668751200] [2023-12-19 08:26:14,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:26:14,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:26:14,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:26:14,435 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) [2023-12-19 08:26:14,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 08:26:14,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:26:14,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 08:26:14,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:26:14,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 08:26:14,790 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:26:14,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:26:14,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192330053] [2023-12-19 08:26:14,791 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:26:14,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668751200] [2023-12-19 08:26:14,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668751200] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:26:14,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:26:14,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 08:26:14,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645689988] [2023-12-19 08:26:14,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:26:14,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 08:26:14,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:26:14,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 08:26:14,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 08:26:14,799 INFO L87 Difference]: Start difference. First operand 403 states and 646 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:26:15,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:26:15,022 INFO L93 Difference]: Finished difference Result 1196 states and 1926 transitions. [2023-12-19 08:26:15,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 08:26:15,023 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 210 [2023-12-19 08:26:15,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:26:15,027 INFO L225 Difference]: With dead ends: 1196 [2023-12-19 08:26:15,028 INFO L226 Difference]: Without dead ends: 994 [2023-12-19 08:26:15,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-19 08:26:15,030 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 489 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 1464 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 08:26:15,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 1464 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 08:26:15,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2023-12-19 08:26:15,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 870. [2023-12-19 08:26:15,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 560 states have (on average 1.4428571428571428) internal successors, (808), 560 states have internal predecessors, (808), 297 states have call successors, (297), 12 states have call predecessors, (297), 12 states have return successors, (297), 297 states have call predecessors, (297), 297 states have call successors, (297) [2023-12-19 08:26:15,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1402 transitions. [2023-12-19 08:26:15,122 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1402 transitions. Word has length 210 [2023-12-19 08:26:15,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:26:15,122 INFO L495 AbstractCegarLoop]: Abstraction has 870 states and 1402 transitions. [2023-12-19 08:26:15,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:26:15,123 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1402 transitions. [2023-12-19 08:26:15,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-12-19 08:26:15,124 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:26:15,124 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:26:15,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 08:26:15,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:26:15,331 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:26:15,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:26:15,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1551940827, now seen corresponding path program 1 times [2023-12-19 08:26:15,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:26:15,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968790774] [2023-12-19 08:26:15,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:26:15,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:26:15,384 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:26:15,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2060693239] [2023-12-19 08:26:15,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:26:15,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:26:15,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:26:15,386 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:26:15,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 08:26:15,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:26:15,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 08:26:15,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:26:18,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 08:26:18,123 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:26:18,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:26:18,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968790774] [2023-12-19 08:26:18,124 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:26:18,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060693239] [2023-12-19 08:26:18,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060693239] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:26:18,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:26:18,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 08:26:18,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171880702] [2023-12-19 08:26:18,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:26:18,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 08:26:18,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:26:18,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 08:26:18,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-19 08:26:18,126 INFO L87 Difference]: Start difference. First operand 870 states and 1402 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:26:19,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:26:19,984 INFO L93 Difference]: Finished difference Result 2037 states and 3293 transitions. [2023-12-19 08:26:19,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 08:26:19,985 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 210 [2023-12-19 08:26:19,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:26:19,993 INFO L225 Difference]: With dead ends: 2037 [2023-12-19 08:26:19,994 INFO L226 Difference]: Without dead ends: 1738 [2023-12-19 08:26:19,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=150, Invalid=312, Unknown=0, NotChecked=0, Total=462 [2023-12-19 08:26:19,996 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 1040 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 08:26:19,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1040 Valid, 1093 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 980 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 08:26:19,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2023-12-19 08:26:20,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1590. [2023-12-19 08:26:20,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1590 states, 1041 states have (on average 1.4534101825168109) internal successors, (1513), 1041 states have internal predecessors, (1513), 528 states have call successors, (528), 20 states have call predecessors, (528), 20 states have return successors, (528), 528 states have call predecessors, (528), 528 states have call successors, (528) [2023-12-19 08:26:20,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 2569 transitions. [2023-12-19 08:26:20,163 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 2569 transitions. Word has length 210 [2023-12-19 08:26:20,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:26:20,163 INFO L495 AbstractCegarLoop]: Abstraction has 1590 states and 2569 transitions. [2023-12-19 08:26:20,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:26:20,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 2569 transitions. [2023-12-19 08:26:20,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-12-19 08:26:20,165 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:26:20,165 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:26:20,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 08:26:20,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:26:20,372 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:26:20,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:26:20,372 INFO L85 PathProgramCache]: Analyzing trace with hash 965134813, now seen corresponding path program 1 times [2023-12-19 08:26:20,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:26:20,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501378092] [2023-12-19 08:26:20,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:26:20,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:26:20,401 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:26:20,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [723051438] [2023-12-19 08:26:20,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:26:20,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:26:20,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:26:20,402 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:26:20,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 08:26:20,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:26:20,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 08:26:20,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:26:25,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 08:26:25,288 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:26:25,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:26:25,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501378092] [2023-12-19 08:26:25,288 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:26:25,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723051438] [2023-12-19 08:26:25,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723051438] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:26:25,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:26:25,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 08:26:25,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080402436] [2023-12-19 08:26:25,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:26:25,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 08:26:25,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:26:25,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 08:26:25,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 08:26:25,290 INFO L87 Difference]: Start difference. First operand 1590 states and 2569 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:26:30,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:26:30,955 INFO L93 Difference]: Finished difference Result 2337 states and 3783 transitions. [2023-12-19 08:26:30,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 08:26:30,956 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 210 [2023-12-19 08:26:30,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:26:30,963 INFO L225 Difference]: With dead ends: 2337 [2023-12-19 08:26:30,963 INFO L226 Difference]: Without dead ends: 1738 [2023-12-19 08:26:30,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-19 08:26:30,966 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 922 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 08:26:30,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 1053 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 08:26:30,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2023-12-19 08:26:31,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1624. [2023-12-19 08:26:31,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1075 states have (on average 1.4613953488372093) internal successors, (1571), 1075 states have internal predecessors, (1571), 528 states have call successors, (528), 20 states have call predecessors, (528), 20 states have return successors, (528), 528 states have call predecessors, (528), 528 states have call successors, (528) [2023-12-19 08:26:31,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 2627 transitions. [2023-12-19 08:26:31,097 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 2627 transitions. Word has length 210 [2023-12-19 08:26:31,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:26:31,098 INFO L495 AbstractCegarLoop]: Abstraction has 1624 states and 2627 transitions. [2023-12-19 08:26:31,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:26:31,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 2627 transitions. [2023-12-19 08:26:31,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-12-19 08:26:31,100 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:26:31,100 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:26:31,120 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-19 08:26:31,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:26:31,307 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:26:31,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:26:31,307 INFO L85 PathProgramCache]: Analyzing trace with hash 272077149, now seen corresponding path program 1 times [2023-12-19 08:26:31,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:26:31,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618445910] [2023-12-19 08:26:31,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:26:31,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:26:31,331 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:26:31,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1222173021] [2023-12-19 08:26:31,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:26:31,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:26:31,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:26:31,349 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:26:31,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 08:26:31,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:26:31,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-19 08:26:31,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:26:32,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 276 proven. 90 refuted. 0 times theorem prover too weak. 1746 trivial. 0 not checked. [2023-12-19 08:26:32,751 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:26:54,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:26:54,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618445910] [2023-12-19 08:26:54,111 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:26:54,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222173021] [2023-12-19 08:26:54,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222173021] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 08:26:54,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 08:26:54,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-12-19 08:26:54,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310278591] [2023-12-19 08:26:54,112 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 08:26:54,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-19 08:26:54,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:26:54,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-19 08:26:54,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=354, Unknown=1, NotChecked=0, Total=420 [2023-12-19 08:26:54,113 INFO L87 Difference]: Start difference. First operand 1624 states and 2627 transitions. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 states have internal predecessors, (54), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-12-19 08:26:57,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:26:57,809 INFO L93 Difference]: Finished difference Result 3956 states and 6387 transitions. [2023-12-19 08:26:57,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-19 08:26:57,810 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 states have internal predecessors, (54), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 210 [2023-12-19 08:26:57,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:26:57,818 INFO L225 Difference]: With dead ends: 3956 [2023-12-19 08:26:57,818 INFO L226 Difference]: Without dead ends: 2394 [2023-12-19 08:26:57,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=283, Invalid=1122, Unknown=1, NotChecked=0, Total=1406 [2023-12-19 08:26:57,823 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 599 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 08:26:57,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [599 Valid, 922 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 08:26:57,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2394 states. [2023-12-19 08:26:57,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2394 to 2077. [2023-12-19 08:26:58,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2077 states, 1527 states have (on average 1.5134250163719711) internal successors, (2311), 1527 states have internal predecessors, (2311), 528 states have call successors, (528), 21 states have call predecessors, (528), 21 states have return successors, (528), 528 states have call predecessors, (528), 528 states have call successors, (528) [2023-12-19 08:26:58,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2077 states to 2077 states and 3367 transitions. [2023-12-19 08:26:58,007 INFO L78 Accepts]: Start accepts. Automaton has 2077 states and 3367 transitions. Word has length 210 [2023-12-19 08:26:58,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:26:58,007 INFO L495 AbstractCegarLoop]: Abstraction has 2077 states and 3367 transitions. [2023-12-19 08:26:58,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 states have internal predecessors, (54), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-12-19 08:26:58,008 INFO L276 IsEmpty]: Start isEmpty. Operand 2077 states and 3367 transitions. [2023-12-19 08:26:58,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-12-19 08:26:58,009 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:26:58,010 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:26:58,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 08:26:58,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-19 08:26:58,219 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:26:58,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:26:58,219 INFO L85 PathProgramCache]: Analyzing trace with hash -314728865, now seen corresponding path program 1 times [2023-12-19 08:26:58,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:26:58,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662650748] [2023-12-19 08:26:58,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:26:58,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:26:58,234 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:26:58,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [938995695] [2023-12-19 08:26:58,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:26:58,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:26:58,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:26:58,235 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:26:58,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 08:26:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:26:58,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 08:26:58,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:27:06,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 08:27:06,982 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:27:06,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:27:06,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662650748] [2023-12-19 08:27:06,982 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:27:06,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938995695] [2023-12-19 08:27:06,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938995695] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:27:06,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:27:06,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 08:27:06,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509482042] [2023-12-19 08:27:06,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:27:06,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 08:27:06,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:27:06,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 08:27:06,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 08:27:06,984 INFO L87 Difference]: Start difference. First operand 2077 states and 3367 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:27:13,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:27:13,491 INFO L93 Difference]: Finished difference Result 2825 states and 4575 transitions. [2023-12-19 08:27:13,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 08:27:13,491 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 210 [2023-12-19 08:27:13,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:27:13,499 INFO L225 Difference]: With dead ends: 2825 [2023-12-19 08:27:13,499 INFO L226 Difference]: Without dead ends: 2209 [2023-12-19 08:27:13,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-19 08:27:13,503 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 583 mSDsluCounter, 1038 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 1310 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-19 08:27:13,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 1310 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 955 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-19 08:27:13,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2209 states. [2023-12-19 08:27:13,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2209 to 2067. [2023-12-19 08:27:13,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2067 states, 1517 states have (on average 1.5108767303889254) internal successors, (2292), 1517 states have internal predecessors, (2292), 528 states have call successors, (528), 21 states have call predecessors, (528), 21 states have return successors, (528), 528 states have call predecessors, (528), 528 states have call successors, (528) [2023-12-19 08:27:13,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2067 states to 2067 states and 3348 transitions. [2023-12-19 08:27:13,670 INFO L78 Accepts]: Start accepts. Automaton has 2067 states and 3348 transitions. Word has length 210 [2023-12-19 08:27:13,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:27:13,671 INFO L495 AbstractCegarLoop]: Abstraction has 2067 states and 3348 transitions. [2023-12-19 08:27:13,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:27:13,671 INFO L276 IsEmpty]: Start isEmpty. Operand 2067 states and 3348 transitions. [2023-12-19 08:27:13,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-12-19 08:27:13,673 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:27:13,673 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:27:13,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 08:27:13,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:27:13,880 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:27:13,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:27:13,880 INFO L85 PathProgramCache]: Analyzing trace with hash 734292377, now seen corresponding path program 1 times [2023-12-19 08:27:13,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:27:13,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192212316] [2023-12-19 08:27:13,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:27:13,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:27:13,905 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:27:13,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1255555496] [2023-12-19 08:27:13,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:27:13,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:27:13,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:27:13,922 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:27:13,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 08:27:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:27:14,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 08:27:14,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:27:14,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 08:27:14,229 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:27:14,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:27:14,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192212316] [2023-12-19 08:27:14,229 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:27:14,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255555496] [2023-12-19 08:27:14,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255555496] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:27:14,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:27:14,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 08:27:14,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030385474] [2023-12-19 08:27:14,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:27:14,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 08:27:14,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:27:14,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 08:27:14,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 08:27:14,231 INFO L87 Difference]: Start difference. First operand 2067 states and 3348 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:27:14,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:27:14,395 INFO L93 Difference]: Finished difference Result 2639 states and 4258 transitions. [2023-12-19 08:27:14,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 08:27:14,395 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 210 [2023-12-19 08:27:14,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:27:14,401 INFO L225 Difference]: With dead ends: 2639 [2023-12-19 08:27:14,401 INFO L226 Difference]: Without dead ends: 1673 [2023-12-19 08:27:14,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 08:27:14,404 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 92 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 08:27:14,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 466 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 08:27:14,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1673 states. [2023-12-19 08:27:14,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1673 to 1629. [2023-12-19 08:27:14,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1629 states, 1184 states have (on average 1.5092905405405406) internal successors, (1787), 1184 states have internal predecessors, (1787), 429 states have call successors, (429), 15 states have call predecessors, (429), 15 states have return successors, (429), 429 states have call predecessors, (429), 429 states have call successors, (429) [2023-12-19 08:27:14,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 2645 transitions. [2023-12-19 08:27:14,525 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 2645 transitions. Word has length 210 [2023-12-19 08:27:14,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:27:14,525 INFO L495 AbstractCegarLoop]: Abstraction has 1629 states and 2645 transitions. [2023-12-19 08:27:14,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:27:14,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 2645 transitions. [2023-12-19 08:27:14,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-12-19 08:27:14,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:27:14,527 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:27:14,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 08:27:14,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-19 08:27:14,733 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:27:14,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:27:14,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1333086109, now seen corresponding path program 1 times [2023-12-19 08:27:14,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:27:14,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425578905] [2023-12-19 08:27:14,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:27:14,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:27:14,769 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:27:14,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1198289734] [2023-12-19 08:27:14,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:27:14,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:27:14,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:27:14,791 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:27:14,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 08:27:14,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:27:14,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 08:27:14,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:27:15,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 978 proven. 63 refuted. 0 times theorem prover too weak. 1071 trivial. 0 not checked. [2023-12-19 08:27:15,067 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:27:15,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 33 proven. 63 refuted. 0 times theorem prover too weak. 2016 trivial. 0 not checked. [2023-12-19 08:27:15,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:27:15,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425578905] [2023-12-19 08:27:15,218 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:27:15,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198289734] [2023-12-19 08:27:15,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198289734] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 08:27:15,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 08:27:15,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-12-19 08:27:15,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626243757] [2023-12-19 08:27:15,218 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 08:27:15,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 08:27:15,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:27:15,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 08:27:15,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 08:27:15,220 INFO L87 Difference]: Start difference. First operand 1629 states and 2645 transitions. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 2 states have call successors, (54), 2 states have call predecessors, (54), 4 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2023-12-19 08:27:15,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:27:15,650 INFO L93 Difference]: Finished difference Result 2314 states and 3711 transitions. [2023-12-19 08:27:15,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 08:27:15,650 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 2 states have call successors, (54), 2 states have call predecessors, (54), 4 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 210 [2023-12-19 08:27:15,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:27:15,655 INFO L225 Difference]: With dead ends: 2314 [2023-12-19 08:27:15,655 INFO L226 Difference]: Without dead ends: 1459 [2023-12-19 08:27:15,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 411 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-12-19 08:27:15,657 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 600 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 08:27:15,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 559 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 08:27:15,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2023-12-19 08:27:15,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 1429. [2023-12-19 08:27:15,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1429 states, 1041 states have (on average 1.4851104707012488) internal successors, (1546), 1041 states have internal predecessors, (1546), 363 states have call successors, (363), 24 states have call predecessors, (363), 24 states have return successors, (363), 363 states have call predecessors, (363), 363 states have call successors, (363) [2023-12-19 08:27:15,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1429 states to 1429 states and 2272 transitions. [2023-12-19 08:27:15,739 INFO L78 Accepts]: Start accepts. Automaton has 1429 states and 2272 transitions. Word has length 210 [2023-12-19 08:27:15,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:27:15,741 INFO L495 AbstractCegarLoop]: Abstraction has 1429 states and 2272 transitions. [2023-12-19 08:27:15,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 2 states have call successors, (54), 2 states have call predecessors, (54), 4 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2023-12-19 08:27:15,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1429 states and 2272 transitions. [2023-12-19 08:27:15,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-12-19 08:27:15,743 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:27:15,743 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:27:15,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 08:27:15,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 08:27:15,949 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:27:15,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:27:15,950 INFO L85 PathProgramCache]: Analyzing trace with hash -472352225, now seen corresponding path program 1 times [2023-12-19 08:27:15,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:27:15,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216578871] [2023-12-19 08:27:15,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:27:15,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:27:15,978 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:27:15,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [599791482] [2023-12-19 08:27:15,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:27:15,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:27:15,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:27:15,981 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:27:15,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 08:27:16,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:27:16,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-19 08:27:16,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:27:26,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 753 proven. 225 refuted. 0 times theorem prover too weak. 1134 trivial. 0 not checked. [2023-12-19 08:27:26,054 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:27:43,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 08:27:43,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:27:43,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216578871] [2023-12-19 08:27:43,516 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:27:43,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599791482] [2023-12-19 08:27:43,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599791482] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 08:27:43,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 08:27:43,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [21] total 28 [2023-12-19 08:27:43,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287664068] [2023-12-19 08:27:43,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:27:43,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 08:27:43,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:27:43,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 08:27:43,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=607, Unknown=1, NotChecked=0, Total=756 [2023-12-19 08:27:43,517 INFO L87 Difference]: Start difference. First operand 1429 states and 2272 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:27:54,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 08:28:08,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 08:28:12,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:28:12,488 INFO L93 Difference]: Finished difference Result 3142 states and 5010 transitions. [2023-12-19 08:28:12,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 08:28:12,489 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 210 [2023-12-19 08:28:12,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:28:12,496 INFO L225 Difference]: With dead ends: 3142 [2023-12-19 08:28:12,496 INFO L226 Difference]: Without dead ends: 2286 [2023-12-19 08:28:12,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 392 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 21.5s TimeCoverageRelationStatistics Valid=222, Invalid=1037, Unknown=1, NotChecked=0, Total=1260 [2023-12-19 08:28:12,499 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 406 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.3s IncrementalHoareTripleChecker+Time [2023-12-19 08:28:12,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 1012 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 359 Invalid, 2 Unknown, 0 Unchecked, 19.3s Time] [2023-12-19 08:28:12,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2286 states. [2023-12-19 08:28:12,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2286 to 1658. [2023-12-19 08:28:12,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1658 states, 1260 states have (on average 1.5015873015873016) internal successors, (1892), 1260 states have internal predecessors, (1892), 363 states have call successors, (363), 34 states have call predecessors, (363), 34 states have return successors, (363), 363 states have call predecessors, (363), 363 states have call successors, (363) [2023-12-19 08:28:12,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 2618 transitions. [2023-12-19 08:28:12,632 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 2618 transitions. Word has length 210 [2023-12-19 08:28:12,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:28:12,632 INFO L495 AbstractCegarLoop]: Abstraction has 1658 states and 2618 transitions. [2023-12-19 08:28:12,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:28:12,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 2618 transitions. [2023-12-19 08:28:12,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-12-19 08:28:12,634 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:28:12,634 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:28:12,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 08:28:12,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-19 08:28:12,840 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:28:12,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:28:12,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1059158239, now seen corresponding path program 1 times [2023-12-19 08:28:12,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:28:12,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375708044] [2023-12-19 08:28:12,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:28:12,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:28:12,860 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:28:12,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1177769494] [2023-12-19 08:28:12,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:28:12,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:28:12,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:28:12,940 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:28:12,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 08:28:13,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:28:13,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 08:28:13,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:28:19,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 08:28:19,541 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:28:19,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:28:19,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375708044] [2023-12-19 08:28:19,541 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:28:19,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177769494] [2023-12-19 08:28:19,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177769494] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:28:19,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:28:19,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 08:28:19,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312177907] [2023-12-19 08:28:19,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:28:19,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 08:28:19,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:28:19,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 08:28:19,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 08:28:19,543 INFO L87 Difference]: Start difference. First operand 1658 states and 2618 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:28:24,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:28:24,213 INFO L93 Difference]: Finished difference Result 2750 states and 4321 transitions. [2023-12-19 08:28:24,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 08:28:24,223 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 210 [2023-12-19 08:28:24,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:28:24,229 INFO L225 Difference]: With dead ends: 2750 [2023-12-19 08:28:24,230 INFO L226 Difference]: Without dead ends: 1797 [2023-12-19 08:28:24,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-19 08:28:24,233 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 437 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-19 08:28:24,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 1138 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-19 08:28:24,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2023-12-19 08:28:24,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1675. [2023-12-19 08:28:24,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1675 states, 1277 states have (on average 1.5043069694596711) internal successors, (1921), 1277 states have internal predecessors, (1921), 363 states have call successors, (363), 34 states have call predecessors, (363), 34 states have return successors, (363), 363 states have call predecessors, (363), 363 states have call successors, (363) [2023-12-19 08:28:24,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1675 states to 1675 states and 2647 transitions. [2023-12-19 08:28:24,348 INFO L78 Accepts]: Start accepts. Automaton has 1675 states and 2647 transitions. Word has length 210 [2023-12-19 08:28:24,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:28:24,348 INFO L495 AbstractCegarLoop]: Abstraction has 1675 states and 2647 transitions. [2023-12-19 08:28:24,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:28:24,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1675 states and 2647 transitions. [2023-12-19 08:28:24,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-12-19 08:28:24,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:28:24,350 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:28:24,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 08:28:24,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-19 08:28:24,561 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:28:24,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:28:24,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1955945379, now seen corresponding path program 1 times [2023-12-19 08:28:24,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:28:24,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260347506] [2023-12-19 08:28:24,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:28:24,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:28:24,587 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:28:24,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [223708540] [2023-12-19 08:28:24,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:28:24,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:28:24,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:28:24,588 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:28:24,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 08:28:24,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:28:24,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 08:28:24,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:28:33,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 08:28:33,685 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:28:33,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:28:33,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260347506] [2023-12-19 08:28:33,685 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:28:33,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223708540] [2023-12-19 08:28:33,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223708540] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:28:33,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:28:33,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 08:28:33,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135829426] [2023-12-19 08:28:33,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:28:33,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 08:28:33,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:28:33,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 08:28:33,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 08:28:33,687 INFO L87 Difference]: Start difference. First operand 1675 states and 2647 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:28:41,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:28:41,136 INFO L93 Difference]: Finished difference Result 2771 states and 4356 transitions. [2023-12-19 08:28:41,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 08:28:41,137 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 210 [2023-12-19 08:28:41,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:28:41,142 INFO L225 Difference]: With dead ends: 2771 [2023-12-19 08:28:41,143 INFO L226 Difference]: Without dead ends: 1801 [2023-12-19 08:28:41,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-19 08:28:41,146 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 369 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-19 08:28:41,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 1230 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 730 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-19 08:28:41,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1801 states. [2023-12-19 08:28:41,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1801 to 1665. [2023-12-19 08:28:41,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1665 states, 1267 states have (on average 1.5011838989739543) internal successors, (1902), 1267 states have internal predecessors, (1902), 363 states have call successors, (363), 34 states have call predecessors, (363), 34 states have return successors, (363), 363 states have call predecessors, (363), 363 states have call successors, (363) [2023-12-19 08:28:41,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 2628 transitions. [2023-12-19 08:28:41,263 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 2628 transitions. Word has length 210 [2023-12-19 08:28:41,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:28:41,264 INFO L495 AbstractCegarLoop]: Abstraction has 1665 states and 2628 transitions. [2023-12-19 08:28:41,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:28:41,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 2628 transitions. [2023-12-19 08:28:41,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-19 08:28:41,265 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:28:41,265 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:28:41,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 08:28:41,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:28:41,476 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:28:41,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:28:41,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1777490579, now seen corresponding path program 1 times [2023-12-19 08:28:41,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:28:41,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156177204] [2023-12-19 08:28:41,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:28:41,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:28:41,497 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:28:41,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [272737390] [2023-12-19 08:28:41,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:28:41,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:28:41,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:28:41,510 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:28:41,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 08:28:41,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:28:41,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-19 08:28:41,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:28:42,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 08:28:42,926 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:28:42,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:28:42,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156177204] [2023-12-19 08:28:42,926 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:28:42,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272737390] [2023-12-19 08:28:42,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272737390] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:28:42,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:28:42,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 08:28:42,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266317571] [2023-12-19 08:28:42,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:28:42,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 08:28:42,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:28:42,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 08:28:42,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-19 08:28:42,927 INFO L87 Difference]: Start difference. First operand 1665 states and 2628 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:28:43,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:28:43,699 INFO L93 Difference]: Finished difference Result 2251 states and 3559 transitions. [2023-12-19 08:28:43,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 08:28:43,700 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 211 [2023-12-19 08:28:43,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:28:43,707 INFO L225 Difference]: With dead ends: 2251 [2023-12-19 08:28:43,707 INFO L226 Difference]: Without dead ends: 1885 [2023-12-19 08:28:43,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-19 08:28:43,709 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 360 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 08:28:43,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 988 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 08:28:43,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1885 states. [2023-12-19 08:28:43,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1885 to 1703. [2023-12-19 08:28:43,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1703 states, 1305 states have (on average 1.5080459770114942) internal successors, (1968), 1305 states have internal predecessors, (1968), 363 states have call successors, (363), 34 states have call predecessors, (363), 34 states have return successors, (363), 363 states have call predecessors, (363), 363 states have call successors, (363) [2023-12-19 08:28:43,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1703 states to 1703 states and 2694 transitions. [2023-12-19 08:28:43,829 INFO L78 Accepts]: Start accepts. Automaton has 1703 states and 2694 transitions. Word has length 211 [2023-12-19 08:28:43,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:28:43,830 INFO L495 AbstractCegarLoop]: Abstraction has 1703 states and 2694 transitions. [2023-12-19 08:28:43,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:28:43,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1703 states and 2694 transitions. [2023-12-19 08:28:43,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-19 08:28:43,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:28:43,831 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:28:43,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 08:28:44,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-19 08:28:44,037 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:28:44,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:28:44,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1190684565, now seen corresponding path program 1 times [2023-12-19 08:28:44,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:28:44,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614813290] [2023-12-19 08:28:44,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:28:44,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:28:44,061 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:28:44,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [126511563] [2023-12-19 08:28:44,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:28:44,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:28:44,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:28:44,063 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:28:44,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 08:28:44,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:28:44,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 08:28:44,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:28:45,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 08:28:45,766 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:28:45,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:28:45,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614813290] [2023-12-19 08:28:45,767 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:28:45,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126511563] [2023-12-19 08:28:45,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126511563] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:28:45,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:28:45,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 08:28:45,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541518044] [2023-12-19 08:28:45,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:28:45,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 08:28:45,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:28:45,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 08:28:45,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-19 08:28:45,768 INFO L87 Difference]: Start difference. First operand 1703 states and 2694 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:28:47,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:28:47,510 INFO L93 Difference]: Finished difference Result 2675 states and 4228 transitions. [2023-12-19 08:28:47,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-19 08:28:47,510 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 211 [2023-12-19 08:28:47,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:28:47,518 INFO L225 Difference]: With dead ends: 2675 [2023-12-19 08:28:47,518 INFO L226 Difference]: Without dead ends: 2229 [2023-12-19 08:28:47,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2023-12-19 08:28:47,519 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 729 mSDsluCounter, 1182 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 1485 SdHoareTripleChecker+Invalid, 970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 08:28:47,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [729 Valid, 1485 Invalid, 970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 08:28:47,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2229 states. [2023-12-19 08:28:47,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2229 to 1933. [2023-12-19 08:28:47,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1933 states, 1463 states have (on average 1.4969241285030759) internal successors, (2190), 1463 states have internal predecessors, (2190), 429 states have call successors, (429), 40 states have call predecessors, (429), 40 states have return successors, (429), 429 states have call predecessors, (429), 429 states have call successors, (429) [2023-12-19 08:28:47,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1933 states to 1933 states and 3048 transitions. [2023-12-19 08:28:47,659 INFO L78 Accepts]: Start accepts. Automaton has 1933 states and 3048 transitions. Word has length 211 [2023-12-19 08:28:47,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:28:47,660 INFO L495 AbstractCegarLoop]: Abstraction has 1933 states and 3048 transitions. [2023-12-19 08:28:47,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:28:47,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1933 states and 3048 transitions. [2023-12-19 08:28:47,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-19 08:28:47,661 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:28:47,661 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:28:47,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-19 08:28:47,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-19 08:28:47,873 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:28:47,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:28:47,873 INFO L85 PathProgramCache]: Analyzing trace with hash -846051889, now seen corresponding path program 1 times [2023-12-19 08:28:47,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:28:47,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033466128] [2023-12-19 08:28:47,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:28:47,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:28:47,889 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:28:47,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1113452852] [2023-12-19 08:28:47,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:28:47,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:28:47,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:28:47,890 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:28:47,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-19 08:28:48,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:28:48,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-19 08:28:48,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:28:49,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 08:28:49,315 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:28:49,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:28:49,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033466128] [2023-12-19 08:28:49,315 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:28:49,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113452852] [2023-12-19 08:28:49,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113452852] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:28:49,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:28:49,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 08:28:49,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784933851] [2023-12-19 08:28:49,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:28:49,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 08:28:49,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:28:49,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 08:28:49,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-19 08:28:49,317 INFO L87 Difference]: Start difference. First operand 1933 states and 3048 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:28:49,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:28:49,917 INFO L93 Difference]: Finished difference Result 2898 states and 4574 transitions. [2023-12-19 08:28:49,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 08:28:49,917 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 211 [2023-12-19 08:28:49,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:28:49,941 INFO L225 Difference]: With dead ends: 2898 [2023-12-19 08:28:49,941 INFO L226 Difference]: Without dead ends: 2148 [2023-12-19 08:28:49,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-19 08:28:49,943 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 308 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 08:28:49,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 718 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 08:28:49,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2023-12-19 08:28:50,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 1971. [2023-12-19 08:28:50,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1971 states, 1501 states have (on average 1.502998001332445) internal successors, (2256), 1501 states have internal predecessors, (2256), 429 states have call successors, (429), 40 states have call predecessors, (429), 40 states have return successors, (429), 429 states have call predecessors, (429), 429 states have call successors, (429) [2023-12-19 08:28:50,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1971 states to 1971 states and 3114 transitions. [2023-12-19 08:28:50,077 INFO L78 Accepts]: Start accepts. Automaton has 1971 states and 3114 transitions. Word has length 211 [2023-12-19 08:28:50,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:28:50,078 INFO L495 AbstractCegarLoop]: Abstraction has 1971 states and 3114 transitions. [2023-12-19 08:28:50,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:28:50,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1971 states and 3114 transitions. [2023-12-19 08:28:50,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-19 08:28:50,079 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:28:50,079 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:28:50,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-19 08:28:50,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-19 08:28:50,286 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:28:50,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:28:50,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1432857903, now seen corresponding path program 1 times [2023-12-19 08:28:50,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:28:50,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219763873] [2023-12-19 08:28:50,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:28:50,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:28:50,300 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:28:50,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1711520964] [2023-12-19 08:28:50,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:28:50,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:28:50,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:28:50,302 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:28:50,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-19 08:28:50,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:28:50,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 08:28:50,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:28:52,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 08:28:52,060 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:28:52,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:28:52,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219763873] [2023-12-19 08:28:52,061 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:28:52,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711520964] [2023-12-19 08:28:52,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711520964] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:28:52,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:28:52,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 08:28:52,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028822567] [2023-12-19 08:28:52,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:28:52,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 08:28:52,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:28:52,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 08:28:52,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-19 08:28:52,062 INFO L87 Difference]: Start difference. First operand 1971 states and 3114 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:28:53,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:28:53,666 INFO L93 Difference]: Finished difference Result 3623 states and 5715 transitions. [2023-12-19 08:28:53,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-19 08:28:53,666 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 211 [2023-12-19 08:28:53,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:28:53,674 INFO L225 Difference]: With dead ends: 3623 [2023-12-19 08:28:53,674 INFO L226 Difference]: Without dead ends: 2793 [2023-12-19 08:28:53,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2023-12-19 08:28:53,677 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 721 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 08:28:53,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 1308 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 08:28:53,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2793 states. [2023-12-19 08:28:53,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2793 to 2201. [2023-12-19 08:28:53,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2201 states, 1659 states have (on average 1.4924653405666064) internal successors, (2476), 1659 states have internal predecessors, (2476), 495 states have call successors, (495), 46 states have call predecessors, (495), 46 states have return successors, (495), 495 states have call predecessors, (495), 495 states have call successors, (495) [2023-12-19 08:28:53,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2201 states to 2201 states and 3466 transitions. [2023-12-19 08:28:53,865 INFO L78 Accepts]: Start accepts. Automaton has 2201 states and 3466 transitions. Word has length 211 [2023-12-19 08:28:53,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:28:53,865 INFO L495 AbstractCegarLoop]: Abstraction has 2201 states and 3466 transitions. [2023-12-19 08:28:53,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:28:53,866 INFO L276 IsEmpty]: Start isEmpty. Operand 2201 states and 3466 transitions. [2023-12-19 08:28:53,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-19 08:28:53,867 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:28:53,867 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:28:53,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-19 08:28:54,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-19 08:28:54,087 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:28:54,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:28:54,087 INFO L85 PathProgramCache]: Analyzing trace with hash -2114939997, now seen corresponding path program 1 times [2023-12-19 08:28:54,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:28:54,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683596183] [2023-12-19 08:28:54,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:28:54,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:28:54,108 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:28:54,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1002544025] [2023-12-19 08:28:54,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:28:54,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:28:54,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:28:54,109 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:28:54,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-19 08:28:54,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:28:54,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 08:28:54,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:28:55,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 08:28:55,191 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:28:55,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:28:55,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683596183] [2023-12-19 08:28:55,191 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:28:55,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002544025] [2023-12-19 08:28:55,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002544025] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:28:55,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:28:55,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 08:28:55,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133068892] [2023-12-19 08:28:55,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:28:55,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 08:28:55,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:28:55,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 08:28:55,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-19 08:28:55,192 INFO L87 Difference]: Start difference. First operand 2201 states and 3466 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:28:57,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:28:57,109 INFO L93 Difference]: Finished difference Result 4226 states and 6612 transitions. [2023-12-19 08:28:57,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 08:28:57,109 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 211 [2023-12-19 08:28:57,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:28:57,115 INFO L225 Difference]: With dead ends: 4226 [2023-12-19 08:28:57,115 INFO L226 Difference]: Without dead ends: 2678 [2023-12-19 08:28:57,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2023-12-19 08:28:57,118 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 370 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 08:28:57,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 1207 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 08:28:57,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2678 states. [2023-12-19 08:28:57,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2678 to 2177. [2023-12-19 08:28:57,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2177 states, 1635 states have (on average 1.4850152905198777) internal successors, (2428), 1635 states have internal predecessors, (2428), 495 states have call successors, (495), 46 states have call predecessors, (495), 46 states have return successors, (495), 495 states have call predecessors, (495), 495 states have call successors, (495) [2023-12-19 08:28:57,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2177 states to 2177 states and 3418 transitions. [2023-12-19 08:28:57,280 INFO L78 Accepts]: Start accepts. Automaton has 2177 states and 3418 transitions. Word has length 211 [2023-12-19 08:28:57,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:28:57,280 INFO L495 AbstractCegarLoop]: Abstraction has 2177 states and 3418 transitions. [2023-12-19 08:28:57,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:28:57,280 INFO L276 IsEmpty]: Start isEmpty. Operand 2177 states and 3418 transitions. [2023-12-19 08:28:57,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-12-19 08:28:57,281 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:28:57,281 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:28:57,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-19 08:28:57,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:28:57,488 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:28:57,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:28:57,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1230517240, now seen corresponding path program 1 times [2023-12-19 08:28:57,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:28:57,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312122949] [2023-12-19 08:28:57,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:28:57,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:28:57,502 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:28:57,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [731481021] [2023-12-19 08:28:57,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:28:57,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:28:57,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:28:57,504 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:28:57,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-19 08:28:57,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:28:57,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-19 08:28:57,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:28:57,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 878 proven. 69 refuted. 0 times theorem prover too weak. 1165 trivial. 0 not checked. [2023-12-19 08:28:57,978 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:28:58,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 27 proven. 69 refuted. 0 times theorem prover too weak. 2016 trivial. 0 not checked. [2023-12-19 08:28:58,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:28:58,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312122949] [2023-12-19 08:28:58,183 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:28:58,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731481021] [2023-12-19 08:28:58,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731481021] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 08:28:58,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 08:28:58,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-12-19 08:28:58,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478327146] [2023-12-19 08:28:58,184 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 08:28:58,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 08:28:58,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:28:58,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 08:28:58,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-12-19 08:28:58,185 INFO L87 Difference]: Start difference. First operand 2177 states and 3418 transitions. Second operand has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 4 states have call successors, (66), 3 states have call predecessors, (66), 5 states have return successors, (66), 4 states have call predecessors, (66), 4 states have call successors, (66) [2023-12-19 08:29:00,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:29:00,701 INFO L93 Difference]: Finished difference Result 6413 states and 9891 transitions. [2023-12-19 08:29:00,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-12-19 08:29:00,701 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 4 states have call successors, (66), 3 states have call predecessors, (66), 5 states have return successors, (66), 4 states have call predecessors, (66), 4 states have call successors, (66) Word has length 212 [2023-12-19 08:29:00,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:29:00,712 INFO L225 Difference]: With dead ends: 6413 [2023-12-19 08:29:00,712 INFO L226 Difference]: Without dead ends: 5271 [2023-12-19 08:29:00,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1360 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=904, Invalid=3386, Unknown=0, NotChecked=0, Total=4290 [2023-12-19 08:29:00,716 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 1784 mSDsluCounter, 2379 mSDsCounter, 0 mSdLazyCounter, 1980 mSolverCounterSat, 1009 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1809 SdHoareTripleChecker+Valid, 2613 SdHoareTripleChecker+Invalid, 2989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1009 IncrementalHoareTripleChecker+Valid, 1980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 08:29:00,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1809 Valid, 2613 Invalid, 2989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1009 Valid, 1980 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 08:29:00,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5271 states. [2023-12-19 08:29:01,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5271 to 3789. [2023-12-19 08:29:01,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3789 states, 2796 states have (on average 1.4624463519313304) internal successors, (4089), 2808 states have internal predecessors, (4089), 879 states have call successors, (879), 113 states have call predecessors, (879), 113 states have return successors, (879), 867 states have call predecessors, (879), 879 states have call successors, (879) [2023-12-19 08:29:01,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3789 states to 3789 states and 5847 transitions. [2023-12-19 08:29:01,048 INFO L78 Accepts]: Start accepts. Automaton has 3789 states and 5847 transitions. Word has length 212 [2023-12-19 08:29:01,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:29:01,048 INFO L495 AbstractCegarLoop]: Abstraction has 3789 states and 5847 transitions. [2023-12-19 08:29:01,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 4 states have call successors, (66), 3 states have call predecessors, (66), 5 states have return successors, (66), 4 states have call predecessors, (66), 4 states have call successors, (66) [2023-12-19 08:29:01,048 INFO L276 IsEmpty]: Start isEmpty. Operand 3789 states and 5847 transitions. [2023-12-19 08:29:01,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-12-19 08:29:01,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:29:01,049 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:29:01,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-19 08:29:01,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:29:01,256 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:29:01,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:29:01,256 INFO L85 PathProgramCache]: Analyzing trace with hash 875514199, now seen corresponding path program 1 times [2023-12-19 08:29:01,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:29:01,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482770965] [2023-12-19 08:29:01,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:29:01,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:29:01,272 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:29:01,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [167491972] [2023-12-19 08:29:01,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:29:01,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:29:01,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:29:01,274 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:29:01,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-19 08:29:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:29:01,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-19 08:29:01,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:29:21,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 08:29:21,905 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:29:21,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:29:21,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482770965] [2023-12-19 08:29:21,905 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:29:21,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167491972] [2023-12-19 08:29:21,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167491972] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:29:21,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:29:21,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-19 08:29:21,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217231945] [2023-12-19 08:29:21,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:29:21,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-19 08:29:21,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:29:21,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-19 08:29:21,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-12-19 08:29:21,906 INFO L87 Difference]: Start difference. First operand 3789 states and 5847 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:29:23,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:29:23,274 INFO L93 Difference]: Finished difference Result 7863 states and 12114 transitions. [2023-12-19 08:29:23,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-19 08:29:23,274 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 213 [2023-12-19 08:29:23,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:29:23,286 INFO L225 Difference]: With dead ends: 7863 [2023-12-19 08:29:23,286 INFO L226 Difference]: Without dead ends: 4157 [2023-12-19 08:29:23,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=155, Invalid=601, Unknown=0, NotChecked=0, Total=756 [2023-12-19 08:29:23,294 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 609 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 08:29:23,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 1017 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 08:29:23,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4157 states. [2023-12-19 08:29:23,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4157 to 3849. [2023-12-19 08:29:23,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3849 states, 2856 states have (on average 1.4628851540616246) internal successors, (4178), 2868 states have internal predecessors, (4178), 879 states have call successors, (879), 113 states have call predecessors, (879), 113 states have return successors, (879), 867 states have call predecessors, (879), 879 states have call successors, (879) [2023-12-19 08:29:23,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3849 states to 3849 states and 5936 transitions. [2023-12-19 08:29:23,627 INFO L78 Accepts]: Start accepts. Automaton has 3849 states and 5936 transitions. Word has length 213 [2023-12-19 08:29:23,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:29:23,628 INFO L495 AbstractCegarLoop]: Abstraction has 3849 states and 5936 transitions. [2023-12-19 08:29:23,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:29:23,628 INFO L276 IsEmpty]: Start isEmpty. Operand 3849 states and 5936 transitions. [2023-12-19 08:29:23,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-12-19 08:29:23,629 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:29:23,629 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:29:23,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-19 08:29:23,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:29:23,836 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:29:23,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:29:23,836 INFO L85 PathProgramCache]: Analyzing trace with hash 797005203, now seen corresponding path program 1 times [2023-12-19 08:29:23,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:29:23,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080337858] [2023-12-19 08:29:23,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:29:23,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:29:23,852 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:29:23,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2020233212] [2023-12-19 08:29:23,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:29:23,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:29:23,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:29:23,853 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:29:23,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-19 08:29:23,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:29:23,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-19 08:29:24,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:30:38,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 08:30:38,227 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:30:38,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:30:38,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080337858] [2023-12-19 08:30:38,227 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:30:38,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020233212] [2023-12-19 08:30:38,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020233212] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:30:38,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:30:38,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-19 08:30:38,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041684004] [2023-12-19 08:30:38,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:30:38,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-19 08:30:38,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:30:38,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-19 08:30:38,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-12-19 08:30:38,229 INFO L87 Difference]: Start difference. First operand 3849 states and 5936 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 12 states have internal predecessors, (51), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:30:39,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:30:39,272 INFO L93 Difference]: Finished difference Result 4162 states and 6386 transitions. [2023-12-19 08:30:39,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-19 08:30:39,273 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 12 states have internal predecessors, (51), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 213 [2023-12-19 08:30:39,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:30:39,280 INFO L225 Difference]: With dead ends: 4162 [2023-12-19 08:30:39,280 INFO L226 Difference]: Without dead ends: 4160 [2023-12-19 08:30:39,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2023-12-19 08:30:39,281 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 441 mSDsluCounter, 1160 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 08:30:39,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 1341 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 08:30:39,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4160 states. [2023-12-19 08:30:39,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4160 to 3905. [2023-12-19 08:30:39,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3905 states, 2912 states have (on average 1.4632554945054945) internal successors, (4261), 2924 states have internal predecessors, (4261), 879 states have call successors, (879), 113 states have call predecessors, (879), 113 states have return successors, (879), 867 states have call predecessors, (879), 879 states have call successors, (879) [2023-12-19 08:30:39,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3905 states to 3905 states and 6019 transitions. [2023-12-19 08:30:39,574 INFO L78 Accepts]: Start accepts. Automaton has 3905 states and 6019 transitions. Word has length 213 [2023-12-19 08:30:39,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:30:39,574 INFO L495 AbstractCegarLoop]: Abstraction has 3905 states and 6019 transitions. [2023-12-19 08:30:39,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 12 states have internal predecessors, (51), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:30:39,575 INFO L276 IsEmpty]: Start isEmpty. Operand 3905 states and 6019 transitions. [2023-12-19 08:30:39,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-12-19 08:30:39,576 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:30:39,576 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:30:39,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-19 08:30:39,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:30:39,781 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:30:39,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:30:39,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1395642209, now seen corresponding path program 1 times [2023-12-19 08:30:39,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:30:39,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560325705] [2023-12-19 08:30:39,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:30:39,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:30:39,800 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:30:39,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [803853355] [2023-12-19 08:30:39,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:30:39,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:30:39,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:30:39,801 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:30:39,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-19 08:30:39,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:30:39,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-19 08:30:39,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:31:09,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 08:31:09,699 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:31:09,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:31:09,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560325705] [2023-12-19 08:31:09,699 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:31:09,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803853355] [2023-12-19 08:31:09,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803853355] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:31:09,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:31:09,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-19 08:31:09,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370416212] [2023-12-19 08:31:09,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:31:09,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-19 08:31:09,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:31:09,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-19 08:31:09,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-12-19 08:31:09,700 INFO L87 Difference]: Start difference. First operand 3905 states and 6019 transitions. Second operand has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 14 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:31:10,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:31:10,804 INFO L93 Difference]: Finished difference Result 4167 states and 6390 transitions. [2023-12-19 08:31:10,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-19 08:31:10,804 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 14 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 214 [2023-12-19 08:31:10,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:31:10,813 INFO L225 Difference]: With dead ends: 4167 [2023-12-19 08:31:10,814 INFO L226 Difference]: Without dead ends: 4165 [2023-12-19 08:31:10,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2023-12-19 08:31:10,815 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 576 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 08:31:10,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 1294 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 08:31:10,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4165 states. [2023-12-19 08:31:11,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4165 to 3949. [2023-12-19 08:31:11,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3949 states, 2956 states have (on average 1.4648173207036537) internal successors, (4330), 2968 states have internal predecessors, (4330), 879 states have call successors, (879), 113 states have call predecessors, (879), 113 states have return successors, (879), 867 states have call predecessors, (879), 879 states have call successors, (879) [2023-12-19 08:31:11,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3949 states to 3949 states and 6088 transitions. [2023-12-19 08:31:11,126 INFO L78 Accepts]: Start accepts. Automaton has 3949 states and 6088 transitions. Word has length 214 [2023-12-19 08:31:11,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:31:11,126 INFO L495 AbstractCegarLoop]: Abstraction has 3949 states and 6088 transitions. [2023-12-19 08:31:11,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 14 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:31:11,126 INFO L276 IsEmpty]: Start isEmpty. Operand 3949 states and 6088 transitions. [2023-12-19 08:31:11,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-12-19 08:31:11,127 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:31:11,127 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:31:11,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-19 08:31:11,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:31:11,344 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:31:11,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:31:11,344 INFO L85 PathProgramCache]: Analyzing trace with hash 2081676637, now seen corresponding path program 1 times [2023-12-19 08:31:11,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:31:11,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50244422] [2023-12-19 08:31:11,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:31:11,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:31:11,360 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:31:11,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1430488941] [2023-12-19 08:31:11,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:31:11,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:31:11,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:31:11,365 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:31:11,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-19 08:31:11,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:31:11,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 08:31:11,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:31:11,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 08:31:11,522 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:31:11,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:31:11,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50244422] [2023-12-19 08:31:11,523 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:31:11,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430488941] [2023-12-19 08:31:11,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430488941] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:31:11,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:31:11,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 08:31:11,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669821529] [2023-12-19 08:31:11,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:31:11,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 08:31:11,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:31:11,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 08:31:11,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 08:31:11,524 INFO L87 Difference]: Start difference. First operand 3949 states and 6088 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:31:11,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:31:11,739 INFO L93 Difference]: Finished difference Result 5697 states and 8787 transitions. [2023-12-19 08:31:11,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 08:31:11,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 214 [2023-12-19 08:31:11,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:31:11,748 INFO L225 Difference]: With dead ends: 5697 [2023-12-19 08:31:11,748 INFO L226 Difference]: Without dead ends: 3027 [2023-12-19 08:31:11,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 08:31:11,754 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 30 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 08:31:11,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 282 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 08:31:11,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3027 states. [2023-12-19 08:31:11,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3027 to 3027. [2023-12-19 08:31:11,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3027 states, 2226 states have (on average 1.435759209344115) internal successors, (3196), 2234 states have internal predecessors, (3196), 711 states have call successors, (711), 89 states have call predecessors, (711), 89 states have return successors, (711), 703 states have call predecessors, (711), 711 states have call successors, (711) [2023-12-19 08:31:12,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3027 states to 3027 states and 4618 transitions. [2023-12-19 08:31:12,004 INFO L78 Accepts]: Start accepts. Automaton has 3027 states and 4618 transitions. Word has length 214 [2023-12-19 08:31:12,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:31:12,005 INFO L495 AbstractCegarLoop]: Abstraction has 3027 states and 4618 transitions. [2023-12-19 08:31:12,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:31:12,005 INFO L276 IsEmpty]: Start isEmpty. Operand 3027 states and 4618 transitions. [2023-12-19 08:31:12,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-12-19 08:31:12,006 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:31:12,006 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:31:12,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-19 08:31:12,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:31:12,212 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:31:12,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:31:12,213 INFO L85 PathProgramCache]: Analyzing trace with hash 465546211, now seen corresponding path program 1 times [2023-12-19 08:31:12,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:31:12,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536029945] [2023-12-19 08:31:12,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:31:12,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:31:12,231 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:31:12,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [306289186] [2023-12-19 08:31:12,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:31:12,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:31:12,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:31:12,233 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:31:12,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-19 08:31:12,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:31:12,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-19 08:31:12,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:37:32,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 08:37:32,629 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:37:32,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:37:32,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536029945] [2023-12-19 08:37:32,629 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:37:32,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306289186] [2023-12-19 08:37:32,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306289186] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:37:32,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:37:32,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-19 08:37:32,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991448255] [2023-12-19 08:37:32,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:37:32,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 08:37:32,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:37:32,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 08:37:32,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-19 08:37:32,630 INFO L87 Difference]: Start difference. First operand 3027 states and 4618 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 13 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:37:33,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:37:33,939 INFO L93 Difference]: Finished difference Result 3130 states and 4750 transitions. [2023-12-19 08:37:33,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-19 08:37:33,939 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 13 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 214 [2023-12-19 08:37:33,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:37:33,945 INFO L225 Difference]: With dead ends: 3130 [2023-12-19 08:37:33,946 INFO L226 Difference]: Without dead ends: 3128 [2023-12-19 08:37:33,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2023-12-19 08:37:33,947 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 328 mSDsluCounter, 1427 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 08:37:33,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 1636 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 08:37:33,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3128 states. [2023-12-19 08:37:34,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3128 to 3071. [2023-12-19 08:37:34,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3071 states, 2270 states have (on average 1.437444933920705) internal successors, (3263), 2278 states have internal predecessors, (3263), 711 states have call successors, (711), 89 states have call predecessors, (711), 89 states have return successors, (711), 703 states have call predecessors, (711), 711 states have call successors, (711) [2023-12-19 08:37:34,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3071 states to 3071 states and 4685 transitions. [2023-12-19 08:37:34,188 INFO L78 Accepts]: Start accepts. Automaton has 3071 states and 4685 transitions. Word has length 214 [2023-12-19 08:37:34,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:37:34,188 INFO L495 AbstractCegarLoop]: Abstraction has 3071 states and 4685 transitions. [2023-12-19 08:37:34,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 13 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:37:34,188 INFO L276 IsEmpty]: Start isEmpty. Operand 3071 states and 4685 transitions. [2023-12-19 08:37:34,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2023-12-19 08:37:34,190 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:37:34,190 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:37:34,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-19 08:37:34,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-19 08:37:34,395 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:37:34,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:37:34,396 INFO L85 PathProgramCache]: Analyzing trace with hash 922191138, now seen corresponding path program 1 times [2023-12-19 08:37:34,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:37:34,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064799900] [2023-12-19 08:37:34,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:37:34,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:37:34,415 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:37:34,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1191530736] [2023-12-19 08:37:34,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:37:34,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:37:34,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:37:34,424 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:37:34,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-19 08:37:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:37:34,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 08:37:34,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:37:34,603 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 08:37:34,603 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:37:34,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:37:34,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064799900] [2023-12-19 08:37:34,603 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:37:34,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191530736] [2023-12-19 08:37:34,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191530736] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:37:34,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:37:34,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 08:37:34,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780352032] [2023-12-19 08:37:34,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:37:34,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 08:37:34,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:37:34,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 08:37:34,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 08:37:34,605 INFO L87 Difference]: Start difference. First operand 3071 states and 4685 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:37:35,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:37:35,055 INFO L93 Difference]: Finished difference Result 7080 states and 10904 transitions. [2023-12-19 08:37:35,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 08:37:35,056 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 215 [2023-12-19 08:37:35,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:37:35,065 INFO L225 Difference]: With dead ends: 7080 [2023-12-19 08:37:35,065 INFO L226 Difference]: Without dead ends: 4494 [2023-12-19 08:37:35,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 08:37:35,070 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 55 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 08:37:35,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 567 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 08:37:35,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4494 states. [2023-12-19 08:37:35,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4494 to 4104. [2023-12-19 08:37:35,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4104 states, 3303 states have (on average 1.4986376021798364) internal successors, (4950), 3311 states have internal predecessors, (4950), 711 states have call successors, (711), 89 states have call predecessors, (711), 89 states have return successors, (711), 703 states have call predecessors, (711), 711 states have call successors, (711) [2023-12-19 08:37:35,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4104 states to 4104 states and 6372 transitions. [2023-12-19 08:37:35,323 INFO L78 Accepts]: Start accepts. Automaton has 4104 states and 6372 transitions. Word has length 215 [2023-12-19 08:37:35,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:37:35,324 INFO L495 AbstractCegarLoop]: Abstraction has 4104 states and 6372 transitions. [2023-12-19 08:37:35,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:37:35,324 INFO L276 IsEmpty]: Start isEmpty. Operand 4104 states and 6372 transitions. [2023-12-19 08:37:35,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2023-12-19 08:37:35,325 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:37:35,325 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:37:35,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-12-19 08:37:35,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-19 08:37:35,531 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:37:35,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:37:35,531 INFO L85 PathProgramCache]: Analyzing trace with hash 887224270, now seen corresponding path program 1 times [2023-12-19 08:37:35,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:37:35,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670958290] [2023-12-19 08:37:35,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:37:35,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:37:35,548 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:37:35,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1265233130] [2023-12-19 08:37:35,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:37:35,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:37:35,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:37:35,549 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:37:35,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-19 08:37:35,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:37:35,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 08:37:35,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:37:35,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 08:37:35,733 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:37:35,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:37:35,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670958290] [2023-12-19 08:37:35,734 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:37:35,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265233130] [2023-12-19 08:37:35,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265233130] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:37:35,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:37:35,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 08:37:35,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573606538] [2023-12-19 08:37:35,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:37:35,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 08:37:35,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:37:35,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 08:37:35,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 08:37:35,735 INFO L87 Difference]: Start difference. First operand 4104 states and 6372 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:37:36,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:37:36,400 INFO L93 Difference]: Finished difference Result 9930 states and 15563 transitions. [2023-12-19 08:37:36,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 08:37:36,401 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 215 [2023-12-19 08:37:36,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:37:36,409 INFO L225 Difference]: With dead ends: 9930 [2023-12-19 08:37:36,409 INFO L226 Difference]: Without dead ends: 6398 [2023-12-19 08:37:36,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 08:37:36,415 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 102 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 08:37:36,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 781 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 08:37:36,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6398 states. [2023-12-19 08:37:36,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6398 to 5199. [2023-12-19 08:37:36,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5199 states, 4398 states have (on average 1.531150522964984) internal successors, (6734), 4406 states have internal predecessors, (6734), 711 states have call successors, (711), 89 states have call predecessors, (711), 89 states have return successors, (711), 703 states have call predecessors, (711), 711 states have call successors, (711) [2023-12-19 08:37:36,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5199 states to 5199 states and 8156 transitions. [2023-12-19 08:37:36,665 INFO L78 Accepts]: Start accepts. Automaton has 5199 states and 8156 transitions. Word has length 215 [2023-12-19 08:37:36,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:37:36,666 INFO L495 AbstractCegarLoop]: Abstraction has 5199 states and 8156 transitions. [2023-12-19 08:37:36,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:37:36,666 INFO L276 IsEmpty]: Start isEmpty. Operand 5199 states and 8156 transitions. [2023-12-19 08:37:36,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-12-19 08:37:36,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:37:36,667 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:37:36,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-12-19 08:37:36,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-19 08:37:36,876 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:37:36,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:37:36,876 INFO L85 PathProgramCache]: Analyzing trace with hash -771555684, now seen corresponding path program 1 times [2023-12-19 08:37:36,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:37:36,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850461427] [2023-12-19 08:37:36,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:37:36,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:37:36,893 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:37:36,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1911164070] [2023-12-19 08:37:36,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:37:36,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:37:36,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:37:36,894 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:37:36,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-19 08:37:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:37:37,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 08:37:37,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:37:37,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 08:37:37,096 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:37:37,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:37:37,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850461427] [2023-12-19 08:37:37,096 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:37:37,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911164070] [2023-12-19 08:37:37,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911164070] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:37:37,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:37:37,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 08:37:37,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463262599] [2023-12-19 08:37:37,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:37:37,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 08:37:37,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:37:37,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 08:37:37,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 08:37:37,097 INFO L87 Difference]: Start difference. First operand 5199 states and 8156 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:37:37,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:37:37,388 INFO L93 Difference]: Finished difference Result 10855 states and 17078 transitions. [2023-12-19 08:37:37,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 08:37:37,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 216 [2023-12-19 08:37:37,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:37:37,398 INFO L225 Difference]: With dead ends: 10855 [2023-12-19 08:37:37,398 INFO L226 Difference]: Without dead ends: 6129 [2023-12-19 08:37:37,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 08:37:37,405 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 46 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 08:37:37,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 329 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 08:37:37,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6129 states. [2023-12-19 08:37:37,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6129 to 5983. [2023-12-19 08:37:37,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5983 states, 5182 states have (on average 1.5312620609803165) internal successors, (7935), 5190 states have internal predecessors, (7935), 711 states have call successors, (711), 89 states have call predecessors, (711), 89 states have return successors, (711), 703 states have call predecessors, (711), 711 states have call successors, (711) [2023-12-19 08:37:37,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5983 states to 5983 states and 9357 transitions. [2023-12-19 08:37:37,699 INFO L78 Accepts]: Start accepts. Automaton has 5983 states and 9357 transitions. Word has length 216 [2023-12-19 08:37:37,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:37:37,700 INFO L495 AbstractCegarLoop]: Abstraction has 5983 states and 9357 transitions. [2023-12-19 08:37:37,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:37:37,700 INFO L276 IsEmpty]: Start isEmpty. Operand 5983 states and 9357 transitions. [2023-12-19 08:37:37,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-19 08:37:37,701 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:37:37,701 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:37:37,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-12-19 08:37:37,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-19 08:37:37,902 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:37:37,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:37:37,902 INFO L85 PathProgramCache]: Analyzing trace with hash -2095535913, now seen corresponding path program 1 times [2023-12-19 08:37:37,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:37:37,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789000868] [2023-12-19 08:37:37,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:37:37,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:37:37,915 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:37:37,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [643483505] [2023-12-19 08:37:37,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:37:37,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:37:37,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:37:37,917 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:37:37,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-19 08:37:38,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:37:38,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-19 08:37:38,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:38:07,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 08:38:07,228 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:38:07,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:38:07,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789000868] [2023-12-19 08:38:07,228 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:38:07,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643483505] [2023-12-19 08:38:07,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643483505] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:38:07,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:38:07,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-19 08:38:07,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924407568] [2023-12-19 08:38:07,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:38:07,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-19 08:38:07,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:38:07,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-19 08:38:07,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2023-12-19 08:38:07,230 INFO L87 Difference]: Start difference. First operand 5983 states and 9357 transitions. Second operand has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 16 states have internal predecessors, (55), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:38:09,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:38:09,500 INFO L93 Difference]: Finished difference Result 14545 states and 22936 transitions. [2023-12-19 08:38:09,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-19 08:38:09,501 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 16 states have internal predecessors, (55), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 217 [2023-12-19 08:38:09,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:38:09,511 INFO L225 Difference]: With dead ends: 14545 [2023-12-19 08:38:09,511 INFO L226 Difference]: Without dead ends: 9193 [2023-12-19 08:38:09,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=182, Invalid=810, Unknown=0, NotChecked=0, Total=992 [2023-12-19 08:38:09,518 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 536 mSDsluCounter, 1878 mSDsCounter, 0 mSdLazyCounter, 1576 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 2144 SdHoareTripleChecker+Invalid, 1649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-19 08:38:09,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 2144 Invalid, 1649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1576 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-19 08:38:09,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9193 states. [2023-12-19 08:38:09,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9193 to 6945. [2023-12-19 08:38:09,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6945 states, 6144 states have (on average 1.53857421875) internal successors, (9453), 6152 states have internal predecessors, (9453), 711 states have call successors, (711), 89 states have call predecessors, (711), 89 states have return successors, (711), 703 states have call predecessors, (711), 711 states have call successors, (711) [2023-12-19 08:38:09,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6945 states to 6945 states and 10875 transitions. [2023-12-19 08:38:09,791 INFO L78 Accepts]: Start accepts. Automaton has 6945 states and 10875 transitions. Word has length 217 [2023-12-19 08:38:09,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:38:09,791 INFO L495 AbstractCegarLoop]: Abstraction has 6945 states and 10875 transitions. [2023-12-19 08:38:09,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 16 states have internal predecessors, (55), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:38:09,791 INFO L276 IsEmpty]: Start isEmpty. Operand 6945 states and 10875 transitions. [2023-12-19 08:38:09,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-19 08:38:09,792 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:38:09,792 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:38:09,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-12-19 08:38:09,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-19 08:38:09,998 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:38:09,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:38:09,999 INFO L85 PathProgramCache]: Analyzing trace with hash -233269741, now seen corresponding path program 1 times [2023-12-19 08:38:09,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:38:09,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365339699] [2023-12-19 08:38:09,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:38:09,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:38:10,013 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:38:10,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [265735438] [2023-12-19 08:38:10,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:38:10,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:38:10,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:38:10,015 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:38:10,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-19 08:38:10,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:38:10,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-19 08:38:10,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:39:46,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 08:39:46,872 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:39:46,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:39:46,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365339699] [2023-12-19 08:39:46,872 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:39:46,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265735438] [2023-12-19 08:39:46,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265735438] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:39:46,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:39:46,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-19 08:39:46,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361233652] [2023-12-19 08:39:46,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:39:46,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-19 08:39:46,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:39:46,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-19 08:39:46,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-12-19 08:39:46,874 INFO L87 Difference]: Start difference. First operand 6945 states and 10875 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:39:48,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:39:48,021 INFO L93 Difference]: Finished difference Result 11334 states and 17791 transitions. [2023-12-19 08:39:48,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 08:39:48,022 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 217 [2023-12-19 08:39:48,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:39:48,034 INFO L225 Difference]: With dead ends: 11334 [2023-12-19 08:39:48,035 INFO L226 Difference]: Without dead ends: 8681 [2023-12-19 08:39:48,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2023-12-19 08:39:48,041 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 260 mSDsluCounter, 1655 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 1878 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 08:39:48,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 1878 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 08:39:48,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8681 states. [2023-12-19 08:39:48,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8681 to 7340. [2023-12-19 08:39:48,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7340 states, 6539 states have (on average 1.5396849671203547) internal successors, (10068), 6547 states have internal predecessors, (10068), 711 states have call successors, (711), 89 states have call predecessors, (711), 89 states have return successors, (711), 703 states have call predecessors, (711), 711 states have call successors, (711) [2023-12-19 08:39:48,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7340 states to 7340 states and 11490 transitions. [2023-12-19 08:39:48,318 INFO L78 Accepts]: Start accepts. Automaton has 7340 states and 11490 transitions. Word has length 217 [2023-12-19 08:39:48,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:39:48,318 INFO L495 AbstractCegarLoop]: Abstraction has 7340 states and 11490 transitions. [2023-12-19 08:39:48,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 08:39:48,318 INFO L276 IsEmpty]: Start isEmpty. Operand 7340 states and 11490 transitions. [2023-12-19 08:39:48,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-19 08:39:48,320 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:39:48,320 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:39:48,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-12-19 08:39:48,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:39:48,526 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:39:48,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:39:48,526 INFO L85 PathProgramCache]: Analyzing trace with hash -709332519, now seen corresponding path program 1 times [2023-12-19 08:39:48,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:39:48,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873346544] [2023-12-19 08:39:48,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:39:48,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:39:48,542 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:39:48,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [493778028] [2023-12-19 08:39:48,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:39:48,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:39:48,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:39:48,544 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:39:48,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-19 08:39:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:39:48,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-19 08:39:48,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-19 08:40:30,403 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 08:40:30,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-12-19 08:40:30,412 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 08:40:30,423 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 08:40:30,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:40:30,610 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 218 with TraceHistMax 33,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-29-3-2-3-2-3-2-2-2-2-2-2-2-3-2-2-2-2-2-3-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-3-2-1 context. [2023-12-19 08:40:30,615 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:40:30,618 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 08:40:30,620 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 08:40:30 BoogieIcfgContainer [2023-12-19 08:40:30,620 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 08:40:30,620 INFO L158 Benchmark]: Toolchain (without parser) took 861273.46ms. Allocated memory was 183.5MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 141.3MB in the beginning and 847.1MB in the end (delta: -705.8MB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. [2023-12-19 08:40:30,620 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 183.5MB. Free memory is still 138.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 08:40:30,620 INFO L158 Benchmark]: CACSL2BoogieTranslator took 269.23ms. Allocated memory is still 183.5MB. Free memory was 141.0MB in the beginning and 124.8MB in the end (delta: 16.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-19 08:40:30,620 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.24ms. Allocated memory is still 183.5MB. Free memory was 124.8MB in the beginning and 120.0MB in the end (delta: 4.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-19 08:40:30,621 INFO L158 Benchmark]: Boogie Preprocessor took 37.02ms. Allocated memory is still 183.5MB. Free memory was 120.0MB in the beginning and 114.1MB in the end (delta: 5.9MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-19 08:40:30,621 INFO L158 Benchmark]: RCFGBuilder took 567.70ms. Allocated memory is still 183.5MB. Free memory was 114.1MB in the beginning and 141.0MB in the end (delta: -26.9MB). Peak memory consumption was 26.5MB. Max. memory is 8.0GB. [2023-12-19 08:40:30,621 INFO L158 Benchmark]: TraceAbstraction took 860336.04ms. Allocated memory was 183.5MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 140.5MB in the beginning and 847.1MB in the end (delta: -706.7MB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. [2023-12-19 08:40:30,622 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 183.5MB. Free memory is still 138.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 269.23ms. Allocated memory is still 183.5MB. Free memory was 141.0MB in the beginning and 124.8MB in the end (delta: 16.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 59.24ms. Allocated memory is still 183.5MB. Free memory was 124.8MB in the beginning and 120.0MB in the end (delta: 4.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.02ms. Allocated memory is still 183.5MB. Free memory was 120.0MB in the beginning and 114.1MB in the end (delta: 5.9MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 567.70ms. Allocated memory is still 183.5MB. Free memory was 114.1MB in the beginning and 141.0MB in the end (delta: -26.9MB). Peak memory consumption was 26.5MB. Max. memory is 8.0GB. * TraceAbstraction took 860336.04ms. Allocated memory was 183.5MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 140.5MB in the beginning and 847.1MB in the end (delta: -706.7MB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 218 with TraceHistMax 33,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-29-3-2-3-2-3-2-2-2-2-2-2-2-3-2-2-2-2-2-3-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-3-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 102 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 860.3s, OverallIterations: 31, TraceHistogramMax: 33, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 80.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 13489 SdHoareTripleChecker+Valid, 46.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13414 mSDsluCounter, 32166 SdHoareTripleChecker+Invalid, 44.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 25632 mSDsCounter, 2323 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16182 IncrementalHoareTripleChecker+Invalid, 18507 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2323 mSolverCounterUnsat, 6534 mSDtfsCounter, 16182 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7497 GetRequests, 6937 SyntacticMatches, 1 SemanticMatches, 559 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3648 ImplicationChecksByTransitivity, 56.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7340occurred in iteration=30, InterpolantAutomatonStates: 459, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.3s AutomataMinimizationTime, 30 MinimizatonAttempts, 11455 StatesRemovedByMinimization, 28 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 721.0s InterpolantComputationTime, 6557 NumberOfCodeBlocks, 6557 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 7156 ConstructedInterpolants, 11 QuantifiedInterpolants, 56521 SizeOfPredicates, 364 NumberOfNonLiveVariables, 15132 ConjunctsInSsa, 508 ConjunctsInUnsatCore, 34 InterpolantComputations, 26 PerfectInterpolantSequences, 71085/71808 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown